2010 Cadillac Truck Escalade/ESV RWD V8-6.2L Page 2159

2010 Cadillac Truck Escalade/ESV RWD V8-6.2L Page 2159

Control Module References (See: Testing and Inspection/Programming and Relearning) for PIM replacement, setup, and programming.

2ML70 - Automatic Transmission

DTC P0601-P0606, P060B, or P062F

Diagnostic Instructions

* Perform the Diagnostic System Check - Vehicle (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Diagnostic System

Check - Vehicle) prior to using this diagnostic procedure.

* Review Strategy Based Diagnosis (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Strategy Based Diagnosis) for an

overview of the diagnostic approach.

* Diagnostic Procedure Instructions (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Diagnostic Procedure

Instructions) provides an overview of each diagnostic category.

DTC Descriptor

DTC P0601

- Transmission Control Module (TCM) Read Only Memory (ROM)

DTC P0602

- Transmission Control Module (TCM) Not Programmed

DTC P0603

- Transmission Control Module (TCM) Long Term Memory Reset

DTC P0604

- Transmission Control Module (TCM) Random Access Memory (RAM)

DTC P0606

- Transmission Control Module (TCM) Internal Performance

DTC P060B

- Control Module Analog to Digital Performance

DTC P062F

- Transmission Control Module (TCM) Long Term Memory Performance

Circuit/System Description

This is an internal fault detection of the transmission control module. This fault is handled inside the transmission control module and no external

circuits are involved. The transmission control module is part of the control solenoid valve assembly, and is not serviced separately.

Conditions for Running the DTC

* The control solenoid valve assembly runs the program to detect an internal fault when the key is ON or the engine is running.

* Ignition voltage is 8-18 V.

Conditions for Setting the DTC

The control solenoid valve assembly has detected an internal malfunction.

Action Taken When the DTC Sets

* DTCs P0601, P0602, P0603, P0604, P0606, P060B and P062F are Type A DTCs.

* The transmission control module shifts to a default gear and turns OFF.

Conditions for Clearing the DTC

DTCs P0601, P0602, P0603, P0604, P0606, P060B and P062F are Type A DTCs.

Diagnostic Aids

When attempting to set transmission control module internal DTCs, run the engine for at least 1 minute, and then shut the engine off for 30

seconds. Following this procedure will allow for a complete transmission control module shutdown.

2010 Cadillac Truck Escalade/ESV RWD V8-6.2L Page 2128

2010 Cadillac Truck Escalade/ESV RWD V8-6.2L Page 2128

Control Module References (See: Testing and Inspection/Programming and Relearning) for FPCM replacement, setup, and programming.

2ML70 - Automatic Transmission

DTC P0562 or P0563

Diagnostic Instructions

* Perform the Diagnostic System Check - Vehicle (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Diagnostic System

Check - Vehicle) prior to using this diagnostic procedure.

* Review Strategy Based Diagnosis (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Strategy Based Diagnosis) for an

overview of the diagnostic approach.

* Diagnostic Procedure Instructions (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Diagnostic Procedure

Instructions) provides an overview of each diagnostic category.

DTC Descriptor

DTC P0562

- System Voltage Low

DTC P0563

- System Voltage High

Circuit/System Description

The transmission control module continuously monitors the system voltage on the Ignition voltage circuits. The transmission control module is

located within the control solenoid valve assembly and is not serviced separately. Lower than normal voltage may be inadequate to operate the

transmission control solenoids properly. Improper solenoid operation may cause erratic transmission operation, which may result in internal

transmission damage.

Conditions for Running the DTC

P0562

The engine is running.

P0563

Ignition voltage has been greater than 12 V for 1 second this ignition cycle.

Conditions for Setting the DTC

P0562

The TCM detects system voltage is less than 10 V for 5 out of 6 seconds.

P0563

The TCM detects system voltage is greater than 18 V for 5 out of 6 seconds.

Action Taken When the DTC Sets

DTCs P0562 and P0563 are Type C DTCs.

Conditions for Clearing the DTC

DTCs P0562 and P0563 are Type C DTCs.

Diagnostic Aids

* Observe the driver information center messaging that would indicate the electrical system requires service.

* Inspect for the following conditions:

- Loose or damaged battery terminals

- Loose or corroded connections at the transmission

- Loose or corroded connections at the accessory power module

2010 Cadillac Truck Escalade/ESV RWD V8-6.2L Page 2121

2010 Cadillac Truck Escalade/ESV RWD V8-6.2L Page 2121

* Control Module References (See: Testing and Inspection/Programming and Relearning) for the ECM replacement, setup, and programming

HVAC - Manual

DTC P0532 or P0533

Diagnostic Instructions

* Perform the Diagnostic System Check - Vehicle (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Diagnostic System

Check - Vehicle) prior to using this diagnostic procedure.

* Review Strategy Based Diagnosis (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Strategy Based Diagnosis) for an

overview of the diagnostic approach.

* Diagnostic Procedure Instructions (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Diagnostic Procedure

Instructions) provides an overview of each diagnostic category.

DTC Descriptors

DTC P0532

- Air Conditioning A/C Refrigerant Pressure Sensor Circuit Low Voltage

DTC P0533

- Air Conditioning A/C Refrigerant Pressure Sensor Circuit High Voltage

Diagnostic Fault Information

Circuit/System Description

The engine control module (ECM) monitors the high side refrigerant pressure through the A/C refrigerant pressure sensor. The ECM supplies a

5-volt reference and a low reference to the sensor. Changes in the A/C refrigerant pressure cause the sensor signal to the ECM to vary. When the

pressure is high, the signal voltage is high. When the pressure is low, the signal voltage is low. When pressure is high, the ECM commands the

cooling fans on. When pressure is too high or too low, the ECM will not allow the A/C compressor clutch to engage.

Conditions for Running the DTC

* Engine is running.

* Any of the conditions for setting the DTC are met for 15 seconds.

* Battery voltage is between 11-18 volts.

Conditions for Setting the DTC

* The ECM detects that the A/C pressure is less than 1 psi (0.01 volt) sets DTC P0532.

* The ECM detects that the A/C pressure is more than 428 psi (4.92 volts) sets DTC P0533.

Action Taken When the DTC Sets

* The ECM will not illuminate the malfunction indicator lamp (MIL).

* The ECM stores the Failure Records.

* The A/C compressor clutch is disabled.

Conditions for Clearing the DTC

* The history DTC will clear after 40 consecutive ignition cycles have occurred without a malfunction.

* The DTC will become history if the ECM no longer detects a failure.

Diagnostic Aids

A malfunction within the refrigerant system causing high pressure can cause this DTC to set.

Reference Information

Schematic Reference

HVAC Schematics (See: Heating and Air Conditioning/Diagrams/Electrical Diagrams/HVAC - Manual)

Connector End View Reference

2010 Cadillac Truck Escalade/ESV RWD V8-6.2L Page 1897

2010 Cadillac Truck Escalade/ESV RWD V8-6.2L Page 1897

* Control Module References (See: Testing and Inspection/Programming and Relearning) for PIM or TCM replacement, setup, and

programming.

* Manual Shift Shaft Position Switch Replacement (See: Powertrain Management/Computers and Control Systems/Sensors and Switches -

Computers and Control Systems/Transmission Position Sensor/Switch/Service and Repair/2ML70 - Automatic Transmission).

* Transmission Control Wiring Harness Extension Harness Removal (See: Transmission and Drivetrain/Automatic

Transmission/Transaxle/Service and Repair/Overhaul/2ML70 - Automatic Transmission/5. Transmission Control Wiring Harness Extension

Harness Removal).

P183B

DTC P181C-P181F, P183A-P183E, P184A, or P184B

Diagnostic Instructions

* Perform the Diagnostic System Check - Vehicle (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Diagnostic System

Check - Vehicle) prior to using this diagnostic procedure.

* Review Strategy Based Diagnosis (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Strategy Based Diagnosis) for an

overview of the diagnostic approach.

* Diagnostic Procedure Instructions (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Diagnostic Procedure

Instructions) provides an overview of each diagnostic category.

DTC Descriptor

DTC P181C

- Internal Mode Switch 2 R1 Circuit Low Voltage

DTC P181D

- Internal Mode Switch 2 R1 Circuit High Voltage

DTC P181E

- Internal Mode Switch 2 R2 Circuit Low Voltage

DTC P181F

- Internal Mode Switch 2 R2 Circuit High Voltage

DTC P183A

- Internal Mode Switch 2 D1 Circuit Low Voltage

DTC P183B

- Internal Mode Switch 2 D1 Circuit High Voltage

DTC P183C

- Internal Mode Switch 2 D2 Circuit Low Voltage

DTC P183D

- Internal Mode Switch 2 D2 Circuit High Voltage

DTC P183E

- Internal Mode Switch 2 - Invalid Range

DTC P184A

- Internal Mode Switch 2 S Circuit Low Voltage

DTC P184B

- Internal Mode Switch 2 S Circuit High Voltage

Diagnostic Fault Information

Typical Scan Tool Data

2010 Cadillac Truck Escalade/ESV RWD V8-6.2L Page 1775

2010 Cadillac Truck Escalade/ESV RWD V8-6.2L Page 1775

* Control Module References (See: Testing and Inspection/Programming and Relearning)for ECM replacement, setup, and programming

P0122

DTC P0120, P0122, P0123, P0220, P0222, P0223, or P2135

Diagnostic Instructions

* Perform the Diagnostic System Check - Vehicle (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Diagnostic System

Check - Vehicle) prior to using this diagnostic procedure.

* Review Strategy Based Diagnosis (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Strategy Based Diagnosis) for an

overview of the diagnostic approach.

* Diagnostic Procedure Instructions (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Diagnostic Procedure

Instructions) provides an overview of each diagnostic category.

DTC Descriptors

DTC P0120

- Throttle Position (TP) Sensor 1 Circuit

DTC P0122

- Throttle Position (TP) Sensor 1 Circuit Low Voltage

DTC P0123

- Throttle Position (TP) Sensor 1 Circuit High Voltage

DTC P0220

- Throttle Position (TP) Sensor 2 Circuit

DTC P0222

- Throttle Position (TP) Sensor 2 Circuit Low Voltage

DTC P0223

- Throttle Position (TP) Sensor 2 Circuit High Voltage

DTC P2135

- Throttle Position (TP) Sensor 1-2 Correlation

Diagnostic Fault Information

Typical Scan Tool Data

2010 Cadillac Truck Escalade/ESV RWD V8-6.2L Page 1613

2010 Cadillac Truck Escalade/ESV RWD V8-6.2L Page 1613

Control Module References (See: Testing and Inspection/Programming and Relearning) for PIM replacement, setup, and programming.

P06B5

DTC P06B1, P06B2, P06B4, or P06B5

Diagnostic Instructions

* Perform the Diagnostic System Check - Vehicle (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Diagnostic System

Check - Vehicle) prior to using this diagnostic procedure.

* Review Strategy Based Diagnosis (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Strategy Based Diagnosis) for an

overview of the diagnostic approach.

* Diagnostic Procedure Instructions (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Diagnostic Procedure

Instructions) provides an overview of each diagnostic category.

DTC Descriptor

DTC P06B1

- Sensor Positive Voltage Circuit 1 Low Voltage

DTC P06B2

- Sensor Positive Voltage Circuit 1 High Voltage

DTC P06B4

- Sensor Positive Voltage Circuit 2 Low Voltage

DTC P06B5

- Sensor Positive Voltage Circuit 2 High Voltage

Circuit/System Description

The drive motor generator power inverter module (PIM) contains two motor control modules (MCM) and a hybrid powertrain control module

(HPCM). The MCMs share an internal 15 volt reference power supply in order to operate the drive motor sensors processors. This fault is handled

inside the PIM and no external circuits are involved.

Conditions for Running the DTC

* The control module runs the program to detect an internal fault when the key is ON.

* Ignition voltage is 8-18V.

Conditions for Setting the DTC

P06B1 or P06B4

The reference voltage is less than 12 V for 1 second.

P06B2 or P06B5

The reference voltage is greater than 18 V for 1 second.

Action Taken When the DTC Sets

* DTCs P06B1, P06B2, P06B4 and P06B5 are Type B DTCs.

* The PIM commands the battery energy control module (BECM) to open the high voltage contactor relays.

Conditions for Clearing the DTC

DTCs P06B1, P06B2, P06B4 and P06B5 are Type B DTCs.

Reference Information

DTC Type Reference

Powertrain Diagnostic Trouble Code (DTC) Type Definitions (See: Diagnostic Trouble Code Descriptions/Powertrain Diagnostic Trouble Code

(DTC) Type Definitions)

Circuit/System Verification

1. Clear the DTC information.

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2010 Cadillac Truck SRX AWD V6-2.8L Turbo Page 1601

replacement, setup, and programming.

* TCM-Refer to Control Module References (See: Testing and Inspection/Programming and Relearning) for replacement, setup, and

programming.

* Perform the Transmission Adaptive Functions (See: Transmission and Drivetrain/Automatic Transmission/Transaxle/Description and

Operation/AF40-6 - Automatic Transmission/Transmission Adaptive Functions).

P0734

DTC P0734

Diagnostic Instructions

* Perform the Diagnostic System Check - Vehicle (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Diagnostic System

Check - Vehicle) prior to using this diagnostic procedure.

* Review Strategy Based Diagnosis (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Strategy Based Diagnosis) for an

overview of the diagnostic approach.

* Diagnostic Procedure Instructions (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Diagnostic Procedure

Instructions) provides an overview of each diagnostic category.

DTC Descriptor

DTC P0734

- 4th Gear Ratio Incorrect

Diagnostic Fault Information

Circuit/System Description

The shift control solenoid assembly (SLC1, SLC2, SLC3, SLB1) and the line pressure control solenoid (SLT) are installed on the front valve body.

The solenoids linearly control hydraulic pressure in response to signals output from the transmission control module (TCM). SLC1, SLC2, SLC3,

SLB1 controls hydraulic pressure to the clutches (C1, C2, C3) and brake (B1) for smooth shifting. According to each shift control solenoid

assembly, the transmission shifts from 1st gear into 6th gear and vice versa. As a fail-safe function, if any shift control solenoid assembly

abnormality occurs, the TCM will disable the current to the solenoids.

Conditions for Running the DTC

* The ignition voltage is 10.2-15.5 V.

* The engine speed is greater than 400 RPM for 2 s.

* The transmission is not in emergency mode.

* TCM communication is normal.

* Transmission fluid temperature is higher than 20掳C (68掳F).

* DTCs P0716. P0717, P0721 and P0722 are not set.

Conditions for Setting the DTC

* Driving in D range, 4th gear.

2010 Cadillac Truck SRX AWD V6-2.8L Turbo Page 1111

2010 Cadillac Truck SRX AWD V6-2.8L Turbo Page 1111

* Control Module References (See: Testing and Inspection/Programming and Relearning) for engine control module replacement, setup, and

programming

P0140

DTC P0137, P0138, or P0140 (Without LF1)

Diagnostic Instructions

* Perform the Diagnostic System Check - Vehicle (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Diagnostic System

Check - Vehicle) prior to using this diagnostic procedure.

* Review Strategy Based Diagnosis (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Strategy Based Diagnosis) for an

overview of the diagnostic approach.

* Diagnostic Procedure Instructions (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Diagnostic Procedure

Instructions) provides an overview of each diagnostic category.

DTC Descriptors

DTC P0137

- HO2S Circuit Low Voltage Sensor 2

DTC P0138

- HO2S Circuit High Voltage Sensor 2

DTC P0140

- HO2S Circuit Insufficient Activity Sensor 2

Diagnostic Fault Information

Typical Scan Tool Data

Circuit Description

The heated oxygen sensors (HO2S) are used for fuel control and catalyst monitoring. Each HO2S compares the oxygen content of the surrounding

air with the oxygen content of the exhaust stream. When the engine is started, the control module operates in an Open Loop mode, ignoring the

HO2S signal voltage while calculating the air-to-fuel ratio. The control module supplies the HO2S with a reference, or bias voltage of about 450

mV. While the engine runs, the HO2S heats up and begins to generate a voltage within a range of 0-1,000 mV. This voltage will fluctuate above

and below the bias voltage. Once sufficient HO2S voltage fluctuation is observed by the control module, Closed Loop is entered. The control

module uses the HO2S voltage to determine the air-to-fuel ratio. An HO2S voltage that increases above bias voltage toward 1,000 mV indicates a

rich fuel mixture. An HO2S voltage that decreases below bias voltage toward 0 mV indicates a lean fuel mixture.

The heating elements inside each HO2S heat the sensor to bring the sensor up to operating conditions faster. This allows the system to enter Closed

Loop earlier and the control module to calculate the air-to-fuel ratio sooner.

Conditions for Running the DTCs

P0137

* DTC P0117 or P0118 is not set.

* The HO2S 2 is at operating temperature for greater than 90 seconds.

* The engine is operating for greater than 5 seconds.

* The ignition voltage is greater than 10 volts.

* The engine coolant temperature is less than 40掳C (104掳F) at start-up and the engine coolant temperature was greater than 60掳C (140掳F) when

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2010 Cadillac Truck SRX AWD V6-2.8L Turbo Page 1806

* Control Module References (See: Testing and Inspection/Programming and Relearning) for Engine Control Module replacement, setup, and

programming

P2094

DTC P0010, P0013, P0020, P0023, P2088, P2089, P2090, P2091, P2092, P2093, P2094, or P2095 (Without LF1, LFW)

Diagnostic Instructions

* Perform the Diagnostic System Check - Vehicle (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Diagnostic System

Check - Vehicle) prior to using this diagnostic procedure.

* Review Strategy Based Diagnosis (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Strategy Based Diagnosis) for an

overview of the diagnostic approach.

* Diagnostic Procedure Instructions (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Diagnostic Procedure

Instructions) provides an overview of each diagnostic category.

DTC Descriptors

DTC P0010

- Intake Camshaft Position Actuator Solenoid Valve Control Circuit Bank 1

DTC P0013

- Exhaust Camshaft Position Actuator Solenoid Valve Control Circuit Bank 1

DTC P0020

- Intake Camshaft Position Actuator Solenoid Valve Control Circuit Bank 2

DTC P0023

- Exhaust Camshaft Position Actuator Solenoid Valve Control Circuit Bank 2

DTC P2088

- Intake Camshaft Position Actuator Solenoid Valve Control Circuit Low Voltage Bank 1

DTC P2089

- Intake Camshaft Position Actuator Solenoid Valve Control Circuit High Voltage Bank 1

DTC P2090

- Exhaust Camshaft Position Actuator Solenoid Valve Control Circuit Low Voltage Bank 1

DTC P2091

- Exhaust Camshaft Position Actuator Solenoid Valve Control Circuit High Voltage Bank 1

DTC P2092

- Intake Camshaft Position Actuator Solenoid Valve Control Circuit Low Voltage Bank 2

DTC P2093

- Intake Camshaft Position Actuator Solenoid Valve Control Circuit High Voltage Bank 2

DTC P2094

- Exhaust Camshaft Position Actuator Solenoid Valve Control Circuit Low Voltage Bank 2

DTC P2095

- Exhaust Camshaft Position Actuator Solenoid Valve Control Circuit High Voltage Bank 2

Circuit/System Description

The camshaft position actuator system enables the Engine Control Module (ECM) to change the timing of the camshafts while the engine is

operating. The Camshaft Position Actuator Solenoid Valve signal from the ECM is pulse width modulated (PWM). The ECM controls the

Camshaft Position Actuator Solenoid Valve duty cycle by controlling the amount of solenoid valve ON time. The Camshaft Position Actuator

Solenoid Valve controls the advance or the retard of each camshaft. The Camshaft Position Actuator Solenoid Valve controls the oil flow that

applies the pressure to advance or retard the camshafts.

Ignition voltage is supplied directly to the Camshaft Position Actuator Solenoid Valve. The ECM controls the solenoid valve by grounding the

control circuit with a solid state device called a driver. The driver is equipped with a feedback circuit that is pulled-up to a voltage. The ECM can

determine if the control circuit is open, shorted to ground, or shorted to a voltage by monitoring the feedback voltage.

Conditions for Running the DTC

* The engine speed is greater than 80 RPM.

* The ignition voltage is between 10-18 V.

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2010 Cadillac Truck SRX AWD V6-2.8L Turbo Page 1353

* Control Module References (See: Testing and Inspection/Programming and Relearning) for ECM replacement, setup, and programming

P0446

DTC P0446

Diagnostic Instructions

* Perform the Diagnostic System Check - Vehicle (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Diagnostic System

Check - Vehicle) prior to using this diagnostic procedure.

* Review Strategy Based Diagnosis (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Strategy Based Diagnosis) for an

overview of the diagnostic approach.

* Diagnostic Procedure Instructions (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Diagnostic Procedure

Instructions) provides an overview of each diagnostic category.

DTC Descriptor

DTC P0446

- Evaporative Emissions Vent System Performance

Typical Scan Tool Data

Circuit/System Description

This DTC tests the evaporative emission (EVAP) system for a restricted or blocked evaporative emission vent path that would cause excess

amounts of vacuum to be developed in the evaporative emission system. With the purge valve open and the canister vent valve open, if the

evaporative emission system vacuum goes above a calibrated threshold, the test will fail.

Conditions for Running the DTC

* DTCs P0106, P0107, P0108, P0116, P0117, P0118, P0120, P0121, P0122, P0123, P0220, P0222, P0223, P0442, P0443, P0449, P0451,

P0452, P0453, P0454, P0464, P0496, P0608, P0609, P0641, P0651, P1516, P2101, P2119, P2120, P2122, P2123, P2125, P2127, P2128,

P2135, P2138 are not set.

* The ignition voltage is between 11-18 V.

* The barometric pressure (BARO) is more than 74 kPa.

* The fuel level is between 15-85 percent.

* The engine coolant temperature (ECT) is less than 35掳C (95掳F).

* The intake air temperature (IAT) is between 4-30掳C (39-86掳F).

* DTC P0446 runs once per cold start when the above conditions are met.

Conditions for Setting the DTC

* The fuel tank vacuum is greater than 12 inches H2O vacuum for 5 seconds.

OR

* The fuel tank pressure is less than -2.5 inches H2O or more than +5 inches for 60 seconds after a cold start.

Action Taken When the DTC Sets

DTC P0446 is a Type B DTC.

Conditions for Clearing the MIL/DTC

DTC P0446 is a Type B DTC.

Diagnostic Aids

* An intermittent condition could be caused by a damaged evaporative emission vent housing, a temporary blockage at the evaporative

emission canister vent solenoid valve inlet, or a pinched vent hose. A blockage in the vent system may also cause a poor fuel fill condition.

* An evaporative emission canister filter that is restricted can cause this DTC to set.

2010 Cadillac Truck Escalade RWD V8-6.0L Hybrid Page 990

2010 Cadillac Truck Escalade RWD V8-6.0L Hybrid Page 990

Control Module References (See: Testing and Inspection/Programming and Relearning) for EBCM replacement, setup, and programming

C123C

DTC C056D, C120C, C121C, C121E, C121F, C123A-C1256, C126E-C127C, C12C2-C12DB, C12DE, C12DF, or C12F2-C12F6

Diagnostic Instructions

* Perform the Diagnostic System Check - Vehicle (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Diagnostic System

Check - Vehicle) prior to using this diagnostic procedure.

* Review Strategy Based Diagnosis (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Strategy Based Diagnosis) for an

overview of the diagnostic approach.

* Diagnostic Procedure Instructions (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Diagnostic Procedure

Instructions) provide an overview of each diagnostic category.

DTC Descriptors

DTC C056D 00

- ECU Hardware Performance

DTC C056D 3C

- ECU Hardware Performance Internal Communications Failure

DTC C056D 59

- ECU Hardware Performance

DTC C120C

- Brake Pedal Position Sensor 4 Plausibility

DTC C121C

- EBCM Internal Communication Error

DTC C121E

- EBCM Unimplemented Interrupt

DTC C121F

- EBCM Unexpected Exception

DTC C123A

- EBCM High End Timer Watchdog

DTC C123B

- EBCM High End Timer Program Overflow

DTC C123C

- EBCM High End Timer RAM Fault

DTC C123D

- EBCM Solenoid Timeout

DTC C123E

- EBCM High End Timer Periodic Interrupt

DTC C123F

- EBCM Serial Peripheral Interface Inoperative

DTC C1255

- Electronic Control Unit Performance

DTC C1256

- Program ROM Checksum Error

DTC C126E

- EBCM Stack Overrun

DTC C126F

- EBCM Serial Peripheral Interface Performance

2010 Cadillac Truck Escalade RWD V8-6.0L Hybrid Page 831

2010 Cadillac Truck Escalade RWD V8-6.0L Hybrid Page 831

Control Module References (See: Testing and Inspection/Programming and Relearning) for EBCM replacement, setup, and programming

Brake Boost Solenoid

DTC C012F, C12A7, C12DC, or C12DD

Diagnostic Instructions

* Perform the Diagnostic System Check - Vehicle (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Diagnostic System

Check - Vehicle) prior to using this diagnostic procedure.

* Review Strategy Based Diagnosis (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Strategy Based Diagnosis) for an

overview of the diagnostic approach.

* Diagnostic Procedure Instructions (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Diagnostic Procedure

Instructions) provides an overview of each diagnostic category.

DTC Descriptors

DTC C012F 00

- Brake Boost Solenoid Valve Circuit

DTC C012F 0E

- Brake Boost Solenoid Valve Circuit Shorted

DTC C12A7

- Brake Boost Solenoid Valve Circuit Performance

DTC C12DC

- Brake Boost Solenoid Valve Circuit Malfunction

DTC C12DD

- Brake Boost Solenoid Valve Circuit Shorted

Circuit/System Description

The electronic brake control module (EBCM) uses input from the boost pressure sensor for more accurate control during brake and vehicle stability

enhancement system (VSES) event. The boost pressure sensor is internal to the brake pressure modulator valve (BPMV).

Conditions for Running the DTC

* The ignition is ON.

* Ignition voltage is greater than 10 volts.

Conditions for Setting the DTC

C012F 00, C12A7, C12DC

Solonoid feedback current greater than 25% of commanded current.

C012F 0E, C12DD

Solonoid feedback current greater than 50% of requested current.

Action Taken When the DTC Sets

* The EBCM disables the ABS/traction control system (TCS)/vehicle stability enhancement system (VSES) for the duration of the ignition

cycle.

* A DIC message and/or a warning indicator may be displayed.

Conditions for Clearing the DTC

* The condition for setting the DTC is no longer present.

* The EBCM clears the history DTC when a current DTC is not detected in 40 consecutive drive cycles.

Reference Information

Schematic Reference

Antilock Brake System Schematics (See: Brakes and Traction Control/Antilock Brakes / Traction Control Systems/Diagrams/Electrical Diagrams)

Connector End View Reference

2010 Cadillac Truck SRX AWD V6-2.8L Turbo Page 1439

2010 Cadillac Truck SRX AWD V6-2.8L Turbo Page 1439

Control Module References (See: Testing and Inspection/Programming and Relearning) for fuel pump control module replacement, setup, and

programming

6T70/6T75 - Automatic Transmission

DTC P0601-P0604 or P062F

Diagnostic Instructions

* Perform the Diagnostic System Check - Vehicle (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Diagnostic System

Check - Vehicle) prior to using this diagnostic procedure.

* Review Strategy Based Diagnosis (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Strategy Based Diagnosis) for an

overview of the diagnostic approach.

* Diagnostic Procedure Instructions (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Diagnostic Procedure

Instructions) provides an overview of each diagnostic category.

DTC Descriptors

DTC P0601

- Transmission Control Module (TCM) Read Only Memory (ROM)

DTC P0602

- Transmission Control Module (TCM) Not Programmed

DTC P0603

- Transmission Control Module (TCM) Long Term Memory Reset

DTC P0604

- Transmission Control Module (TCM) Random Access Memory (RAM)

DTC P062F

- Transmission Control Module (TCM) Long Term Memory Performance

Circuit/System Description

This is an internal fault detection of the control solenoid (w/body and TCM) valve assembly. This fault is handled inside the control solenoid

(w/body and TCM) valve assembly and no external circuits are involved.

Conditions for Running the DTC

The ignition is ON.

Conditions for Setting the DTC

The control solenoid (w/body and TCM) valve assembly has detected an internal malfunction.

Action Taken When the DTC Sets

* DTCs P0601, P0602, P0603, P0604, and P062F are Type A DTCs.

* The TCM shifts to a default gear, shuts down, and turns OFF.

Conditions for Clearing the DTC

DTCs P0601, P0602, P0603, P0604, and P062F are Type A DTCs.

Reference Information

Description and Operation

Electronic Component Description (See: Transmission and Drivetrain/Automatic Transmission/Transaxle/Description and Operation/6T70/6T75 -

Automatic Transmission/Electronic Component Description) for control solenoid (w/body and TCM) valve assembly

DTC Type Reference

Powertrain Diagnostic Trouble Code (DTC) Type Definitions (See: Diagnostic Trouble Code Descriptions/Powertrain Diagnostic Trouble Code

(DTC) Type Definitions)

Scan Tool Reference

Control Module References (See: Testing and Inspection/Programming and Relearning) for scan tool information

2010 Cadillac Truck Escalade RWD V8-6.0L Hybrid Page 442

2010 Cadillac Truck Escalade RWD V8-6.0L Hybrid Page 442

* Control Module References (See: Testing and Inspection/Programming and Relearning) for rear object alarm module replacement, setup

and programming

Engine Electrical

DTC B1424

Diagnostic Instructions

* Perform the Diagnostic System Check - Vehicle (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Diagnostic System

Check - Vehicle) prior to using this diagnostic procedure.

* Review Strategy Based Diagnosis (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Strategy Based Diagnosis) for an

overview of the diagnostic approach.

* Diagnostic Procedure Instructions (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Diagnostic Procedure

Instructions) provides an overview of each diagnostic category.

DTC Descriptor

DTC B1424 00

- Device Voltage Low - Theft Deterrent Module

Diagnostic Fault Information

Circuit/System Description

The theft deterrent module (TDM) monitors the battery positive (B+) voltage available to it. If the voltage at the TDM is between 6-9 volts, and the

voltage being reported by a serial data message is greater than 9 volts, then DTC B1424 00 sets.

Conditions for Running the DTC

The ignition is ON.

Conditions for Setting the DTC

* Voltage at the TDM B+ circuit is between 6-9 volts.

* Reported battery voltage received via serial data is valid and is greater than 9 volts.

* The above conditions have been met for 2 seconds.

Action Taken When the DTC Sets

* The security indicator turns ON.

* The driver information center (DIC) displays the SERVICE THEFT DETERRENT SYSTEM message.

Conditions for Clearing the DTC

* A current DTC clears when the battery voltage at the TDM is greater than 9 volts, or if the voltage reported by serial data is less than 9 volts.

* A history DTC clears after 100 consecutive ignition cycles, if no failures are reported by this diagnostic.

Diagnostic Aids

A low voltage DTC in multiple modules indicates a concern in the charging system.

Reference Information

Schematic Reference

Immobilizer Schematics (See: Accessories and Optional Equipment/Antitheft and Alarm Systems/Diagrams/Electrical Diagrams/Immobilizer

Schematics)

Connector End View Reference

Component Connector End Views (See: Diagrams/Connector Views)

Description and Operation

* Immobilizer Description and Operation (See: Accessories and Optional Equipment/Antitheft and Alarm Systems/Description and

Operation/Immobilizer Description and Operation)

2010 Cadillac Truck Escalade EXT AWD V8-6.2L Page 904

2010 Cadillac Truck Escalade EXT AWD V8-6.2L Page 904

* Control Module References (See: Testing and Inspection/Programming and Relearning) for TCSCM replacement, setup, and programming

* Transfer Case High/Low Clutch Reset (See: Transmission and Drivetrain/Transfer Case/Testing and Inspection/Symptom Related

Diagnostic Procedures/MP 3023/3024-NQH - Transfer Case/Transfer Case High/Low Clutch Reset) for Motor Learn Procedure

* Four-Wheel Drive Does Not Engage (See: Transmission and Drivetrain/Differential Assembly/Testing and Inspection/Front Drive

Axle/Four-Wheel Drive Does Not Engage)

* Front Drive Axle Clutch Fork Inspection (See: Transmission and Drivetrain/Differential Assembly/Differential Lock/Service and

Repair/Front Drive Axle Clutch Fork Inspection)

* Transfer Case Assembly Replacement (See: Transmission and Drivetrain/Transfer Case/Service and Repair/Removal and Replacement/MP

3023/3024-NQH - Transfer Case/Transfer Case Assembly Replacement)

MP 3010-NP0 - Transfer Case

DTC C0379

Diagnostic Instructions

* Perform the Diagnostic System Check - Vehicle (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Diagnostic System

Check - Vehicle) prior to using this diagnostic procedure.

* Review Strategy Based Diagnosis (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Strategy Based Diagnosis) for an

overview of the diagnostic approach.

* Diagnostic Procedure Instructions (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Diagnostic Procedure

Instructions) provides an overview of each diagnostic category.

DTC Descriptors

DTC C0379 01

- Front Axle System Short to Battery

DTC C0379 02

- Front Axle System Short to Ground

DTC C0379 04

- Front Axle System Open Circuit

DTC C0379 08

- Front Axle System Signal Invalid

Diagnostic Fault Information

Circuit/System Description

The front axle control circuit consists of an electric motor actuator which engages and disengages the front axle. The front axle actuator motor

consists of a permanent magnetic motor, a worm gear controlled plunger, a front axle switch and an electronic control circuit within the actuator

assembly.

The front axle actuator consists of the following circuits:

* An Ignition 1 voltage circuit

* An axle switch signal circuit

* An axle actuator control circuit

* A ground circuit

When a shift to 4WD Auto or 4WD HI is requested, the transfer case shift control module (TCCM) engages the front axle by grounding the front

axle control circuit through a current limiting driver.

Conditions for Running the DTC

2010 Cadillac Truck Escalade EXT AWD V8-6.2L Page 861

2010 Cadillac Truck Escalade EXT AWD V8-6.2L Page 861

Control Module References (See: Testing and Inspection/Programming and Relearning) for EBCM replacement, setup, and programming

Antilock Brake System - Non-Hybrid Less than 3900 kg (8600 lb) GVW

DTC C0186 or C0196

Diagnostic Instructions

* Perform the Diagnostic System Check - Vehicle (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Diagnostic System

Check - Vehicle) prior to using this diagnostic procedure.

* Review Strategy Based Diagnosis (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Strategy Based Diagnosis) for an

overview of the diagnostic approach.

* Diagnostic Procedure Instructions (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Diagnostic Procedure

Instructions) provides an overview of each diagnostic category.

DTC Descriptors

DTC C0186 00

- Lateral Accelerometer Circuit

DTC C0186 5A

- Lateral Accelerometer Circuit Plausibility Failure

DTC C0196 00

- Yaw Rate Circuit

DTC C0196 5A

- Yaw Rate Circuit Plausibility Failure

Diagnostic Fault Information

Circuit/System Description

The yaw rate and the lateral accelerometer sensors are combined into one sensor, external to the electronic brake control module (EBCM). The

vehicle stability enhancement system (VSES) uses the lateral accelerometer input when calculating the desired yaw rate. The EBCM supplies the 12

V to the yaw/lateral accelerometer sensor. The yaw/lateral accelerometer sensor communicates with the EBCM via discrete CAN Bus High and

CAN Bus Low serial data circuits.

Conditions for Running the DTC

The engine is running.

Conditions for Setting the DTC

* Short to ground on the CAN High serial data circuit.

* The yaw/lateral accelerometer sensor fails an internal self test.

* Communication is lost between the EBCM and the yaw/lateral combination sensor.

* The correlation error between the yaw/lateral combination sensor and steering angle sensor.

Action Taken When the DTC Sets

One or more of the following actions may occur:

* The EBCM disables the antilock brake system (ABS)/traction control system (TCS) and vehicle stability enhancement system (VSES) for the

duration of the ignition cycle.

* The ABS indicator illuminates.

* The red Brake warning indicator illuminates.

2010 Cadillac Truck Escalade EXT AWD V8-6.2L Page 700

2010 Cadillac Truck Escalade EXT AWD V8-6.2L Page 700

* Control Module References (See: Testing and Inspection/Programming and Relearning) for MSM replacement, setup, and programming

B2870

DTC B2850, B2855, B2870, or B2875

Diagnostic Instructions

* Perform the Diagnostic System Check - Vehicle (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Diagnostic System

Check - Vehicle) prior to using this diagnostic procedure.

* Review Strategy Based Diagnosis (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Strategy Based Diagnosis) for an

overview of the diagnostic approach

* Diagnostic Procedure Instructions (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Diagnostic Procedure

Instructions) provides an overview of each diagnostic category

DTC Descriptor

DTC B2870 01

- Tilt Up Switch Circuit Short to Battery

DTC B2875 01

- Tilt Down Switch Circuit Short to Battery

Diagnostic Fault Information

Circuit Description

The memory seat module (MSM) receives voltage inputs from the tilt switch based on the position of the switch. The MSM then supplies battery

voltage and a ground to the tilt motor control circuits depending on which direction of movement is requested.

Conditions for Running the DTC

The ignition ON.

Conditions for Setting the DTC

The MSM detects a tilt switch input for more than 30 consecutive seconds after the tilt motor movement has stopped.

Action Taken When the DTC Sets

* The tilt motor will be deactivated.

* Memory recall functions will be disabled.

Conditions for Clearing the DTC

* A current DTC will clear when the failed switch input is no longer active.

* A history DTC will clear after 100 ignition cycles.

Diagnostic Aids

An intermittently stuck tilt switch may cause a DTC to set.

Reference Information

Schematic Reference

Steering Wheel Schematics (See: Diagrams/Electrical Diagrams/Steering/Steering Column/Steering Wheel Schematics)

Connector End View Reference

Component Connector End Views (See: Diagrams/Connector Views)

Description and Operation

Steering Wheel and Column Description and Operation (See: Steering and Suspension/Steering/Steering Column/Description and Operation)

2010 Cadillac Truck Escalade EXT AWD V8-6.2L Page 683

2010 Cadillac Truck Escalade EXT AWD V8-6.2L Page 683

* Control Module References (See: Testing and Inspection/Programming and Relearning) for BCM replacement, setup, and programming

B2652

DTC B2652

Diagnostic Instructions

* Perform the Diagnostic System Check - Vehicle (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Diagnostic System

Check - Vehicle) prior to using this diagnostic procedure.

* Review Strategy Based Diagnosis (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Strategy Based Diagnosis) for an

overview of the diagnostic approach.

* Diagnostic Procedure Instructions (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Diagnostic Procedure

Instructions) provides an overview of each diagnostic category.

DTC Descriptor

DTC B2652 00

- Passenger Compartment Dimming 3 Circuit

Diagnostic Fault Information

Circuit/System Description

The body control module (BCM) applies a 12 V reference voltage through the headlamp and panel dimmer switch 12 V reference circuit to the

2010 Cadillac Truck Escalade EXT AWD V8-6.2L Page 468

2010 Cadillac Truck Escalade EXT AWD V8-6.2L Page 468

* Control Module References (See: Testing and Inspection/Programming and Relearning) for rear object alarm module replacement, setup

and programming

B1424

DTC B1424

Diagnostic Instructions

* Perform the Diagnostic System Check - Vehicle (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Diagnostic System

Check - Vehicle) prior to using this diagnostic procedure.

* Review Strategy Based Diagnosis (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Strategy Based Diagnosis) for an

overview of the diagnostic approach.

* Diagnostic Procedure Instructions (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Diagnostic Procedure

Instructions) provides an overview of each diagnostic category.

DTC Descriptor

DTC B1424 00

- Device Voltage Low - Theft Deterrent Module

Diagnostic Fault Information

Circuit/System Description

The theft deterrent module (TDM) monitors the battery positive (B+) voltage available to it. If the voltage at the TDM is between 6-9 volts, and the

voltage being reported by a serial data message is greater than 9 volts, then DTC B1424 00 sets.

Conditions for Running the DTC

The ignition is ON.

Conditions for Setting the DTC

* Voltage at the TDM B+ circuit is between 6-9 volts.

* Reported battery voltage received via serial data is valid and is greater than 9 volts.

* The above conditions have been met for 2 seconds.

Action Taken When the DTC Sets

* The security indicator turns ON.

* The driver information center (DIC) displays the SERVICE THEFT DETERRENT SYSTEM message.

Conditions for Clearing the DTC

* A current DTC clears when the battery voltage at the TDM is greater than 9 volts, or if the voltage reported by serial data is less than 9 volts.

* A history DTC clears after 100 consecutive ignition cycles, if no failures are reported by this diagnostic.

Diagnostic Aids

A low voltage DTC in multiple modules indicates a concern in the charging system.

Reference Information

Schematic Reference

Immobilizer Schematics (See: Accessories and Optional Equipment/Antitheft and Alarm Systems/Diagrams/Electrical Diagrams/Immobilizer

Schematics)

Connector End View Reference

Component Connector End Views (See: Diagrams/Connector Views)

Description and Operation

* Immobilizer Description and Operation (See: Accessories and Optional Equipment/Antitheft and Alarm Systems/Description and

Operation/Immobilizer Description and Operation)

2010 Cadillac Truck Escalade EXT AWD V8-6.2L Page 386

2010 Cadillac Truck Escalade EXT AWD V8-6.2L Page 386

replacement, setup, and programming

B1024

DTC B1024

Diagnostic Instructions

* Perform the Diagnostic System Check - Vehicle (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Diagnostic System

Check - Vehicle) prior to using this diagnostic procedure.

* Review Strategy Based Diagnosis (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Strategy Based Diagnosis) for an

overview of the diagnostic approach.

* Diagnostic Procedure Instructions (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Diagnostic Procedure

Instructions) provides an overview of each diagnostic category.

DTC Descriptor

DTC B1024 11

- Circuit Board Temperature Sensor Above Maximum Threshold

Circuit/System Description

The audio amplifier monitors the internal circuitry for excessive temperature. When the amplifier senses an internal circuitry temperature greater

than 95掳C (203掳F), the amplifier will set DTC B1024 11 and shut down until the internal circuitry cools below 90掳C (194掳F).

Conditions for Running the DTC

* Radio ON.

* Battery voltage must be between 9-16 volts.

Conditions for Setting the DTC

The audio amplifier detects an over-heat condition greater than 95掳C (203掳F) of the internal amplifier circuitry.

Action Taken When the DTC Sets

The audio amplifier will shut down and all speakers will be inoperative.

Conditions for Clearing the DTC

* The condition responsible for setting the DTC no longer exists.

* A history DTC will clear once 100 consecutive malfunction-free ignition cycles have occurred.

Diagnostic Aids

Extended use or extremely high volume especially in warm weather conditions may cause this DTC to set. Under these conditions it may be normal

for this DTC to set to prevent permanent damage to the audio amplifier circuitry.

Reference Information

Schematic Reference

Radio/Navigation System Schematics (See: Accessories and Optional Equipment/Diagrams/Electrical Diagrams/Radio/Navigation System

Schematics)

Connector End View Reference

Component Connector End Views (See: Diagrams/Connector Views)

Description and Operation

Radio/Audio System Description and Operation (See: Accessories and Optional Equipment/Description and Operation/Radio/Audio System

Description and Operation)

Electrical Information Reference

* Circuit Testing (See: Testing and Inspection/Component Tests and General Diagnostics/General Electrical Diagnostic Procedures/Circuit

Testing/Circuit Testing)

* Connector Repairs (See: Testing and Inspection/Component Tests and General Diagnostics/General Electrical Diagnostic

Procedures/Connector Repairs/Connector Repairs)

* Testing for Intermittent Conditions and Poor Connections (See: Testing and Inspection/Component Tests and General Diagnostics/General

Electrical Diagnostic Procedures/Circuit Testing/Testing for Intermittent Conditions and Poor Connections)

* Wiring Repairs (See: Testing and Inspection/Component Tests and General Diagnostics/General Electrical Diagnostic Procedures/Wiring