2010 Cadillac Truck Escalade/ESV RWD V8-6.2L Page 1581
瀚慖f all circuits test normal, continue with testing.
瀚慖f any of the circuits are not within specification, test the internal transmission harness for the condition. If the internal transmission
harness tests OK, replace the applicable drive motor generator.
6. Disconnect DT-48493 from the transmission X176 24-way connector.
7. Connect DT-48493 to the transmission X176 24-way connector at the vehicle harness.
8. Disconnect PIM connector X1.
9. Using the PIM to Transmission Terminal Reference table listed below, test the vehicle harness continuity between PIM X1 and transmission
X176. Use the specifications for the drive motor generator that set the DTC. Also test these circuits for short to ground and to the shield
circuit if the shield circuit is not presently grounded to the PIM assembly.
瀚慖f any of the circuits are not within the specified range, repair or replace the wiring harness.
瀚慖f all circuits test normal, inspect transmission connector X176 for proper terminal contact. If transmission connector X176 tests OK,
inspect the harness for an intermittent concern.
Intermittent Condition Testing
1. If possible, determine which of the position sensor circuits have the intermittent condition by reviewing the Diagnostic Fault Information
table. For example, DTCs P0C57 and P0C52 only set for a short to ground condition on either the S1 or S3 circuit.
2. Using the Position Sensor Specification table listed below, monitor the position sensor circuits at PIM X1 connector while manipulating the
applicable harness and connectors.
瀚慖f any of the circuits are not within specification, repair the harness or terminal as required. If a harness repair is indicated and external
harness damage is not evident, the most likely location for internal wire damage is near the harness clamping locations.
3. Disconnect transmission X176 connector and inspect for the following:
* Proper terminal contact
* Proper terminal retention in the connector
* Foreign material or moisture
瀚慠epair, replace or clean the connector as appropriate.
4. Reconnect all connectors and test drive the vehicle.
瀚慖f the DTC sets, replace the applicable drive motor generator and retest for DTCs. If the DTC sets, replace the PIM.
Showing posts with label 瀚慖f all circuits test normal. Show all posts
Showing posts with label 瀚慖f all circuits test normal. Show all posts
Saturday, October 24, 2020
Sunday, November 3, 2019
2010 Cadillac Truck Escalade EXT AWD V8-6.2L Page 1001
2010 Cadillac Truck Escalade EXT AWD V8-6.2L Page 1001
瀚慖f all circuits test normal, test or replace the automatic level control compressor assembly.
Repair Instructions
Perform the Diagnostic Repair Verification (See: Verification Tests) after completing the diagnostic procedure.
* Air Tube Repair (See: Steering and Suspension/Suspension/Suspension Control ( Automatic - Electronic )/Air Line/Service and Repair)
* Air Compressor Replacement (See: Steering and Suspension/Suspension/Suspension Control ( Automatic - Electronic
)/Compressor/Pump/Service and Repair)
* Control Module References (See: Testing and Inspection/Programming and Relearning) for Air Suspension Control Module replacement,
setup and programming
C0712
DTC C0712
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 C0712 01
- Level Control Compressor Relay Circuit Short to Battery
DTC C0712 06
- Level Control Compressor Relay Circuit Short to Ground or Open Circuit
Diagnostic Fault Information
Circuit/System Description
The electronic suspension control module (ESCM) adjusts the vehicle suspension ride height. The ESCM determines the height of the vehicle based
on the voltage from the suspension position sensors. The module grounds the ELC relay and the exhaust control solenoid to raise and lower the
vehicle in order to keep the vehicle level.
Conditions for Running the DTC
* The ESCM is powered up.
* The ESCM is commanding the compressor ON.
Conditions for Setting the DTC
* The compressor relay coil control circuit is shorted to voltage, ground, or open for 5 seconds.
* The compressor relay coil supply voltage circuit is shorted to ground, or open for 5 seconds.
Action Taken When the DTC Sets
The automatic level control (ALC) system will be inoperative.
Conditions for Clearing the DTC
The ESCM does not detect a failure during the self test.
Diagnostic Aids
This circuit is monitored during every functional operation of the compressor relay output and every 3.3 milliseconds when output is active. If a
瀚慖f all circuits test normal, test or replace the automatic level control compressor assembly.
Repair Instructions
Perform the Diagnostic Repair Verification (See: Verification Tests) after completing the diagnostic procedure.
* Air Tube Repair (See: Steering and Suspension/Suspension/Suspension Control ( Automatic - Electronic )/Air Line/Service and Repair)
* Air Compressor Replacement (See: Steering and Suspension/Suspension/Suspension Control ( Automatic - Electronic
)/Compressor/Pump/Service and Repair)
* Control Module References (See: Testing and Inspection/Programming and Relearning) for Air Suspension Control Module replacement,
setup and programming
C0712
DTC C0712
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 C0712 01
- Level Control Compressor Relay Circuit Short to Battery
DTC C0712 06
- Level Control Compressor Relay Circuit Short to Ground or Open Circuit
Diagnostic Fault Information
Circuit/System Description
The electronic suspension control module (ESCM) adjusts the vehicle suspension ride height. The ESCM determines the height of the vehicle based
on the voltage from the suspension position sensors. The module grounds the ELC relay and the exhaust control solenoid to raise and lower the
vehicle in order to keep the vehicle level.
Conditions for Running the DTC
* The ESCM is powered up.
* The ESCM is commanding the compressor ON.
Conditions for Setting the DTC
* The compressor relay coil control circuit is shorted to voltage, ground, or open for 5 seconds.
* The compressor relay coil supply voltage circuit is shorted to ground, or open for 5 seconds.
Action Taken When the DTC Sets
The automatic level control (ALC) system will be inoperative.
Conditions for Clearing the DTC
The ESCM does not detect a failure during the self test.
Diagnostic Aids
This circuit is monitored during every functional operation of the compressor relay output and every 3.3 milliseconds when output is active. If a
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