2010 Cadillac Truck Escalade RWD V8-6.0L Hybrid Page 621
瀚慖f the test lamp is always ON, test the control circuit for a short to ground. If the circuit tests normal, replace the BCM.
瀚慖f the test lamp is always OFF, test the control circuit for a short to voltage or an open/high resistance. If the circuit tests normal, replace
the BCM.
11. If all circuits test normal, test or replace the fog lamp relay.
Repair Instructions
Perform the Diagnostic Repair Verification (See: Verification Tests) after completing the diagnostic procedure.
* Relay Replacement (Attached to Wire Harness) (See: Power and Ground Distribution/Power Distribution Relay/Service and Repair/Relay
Replacement (Attached to Wire Harness))Relay Replacement (Within an Electrical Center) (See: Power and Ground Distribution/Power
Distribution Relay/Service and Repair/Relay Replacement (Within an Electrical Center))
* Front Fog Lamp Replacement (Tahoe, Avalanche) (See: Lighting and Horns/Fog/Driving Lamp/Service and Repair/Removal and
Replacement/Front Fog Lamp Replacement (Tahoe, Avalanche))Front Fog Lamp Replacement (Yukon) (See: Lighting and
Horns/Fog/Driving Lamp/Service and Repair/Removal and Replacement/Front Fog Lamp Replacement (Yukon))Front Fog Lamp
Replacement (PLATINUM) (See: Lighting and Horns/Fog/Driving Lamp/Service and Repair/Removal and Replacement/Front Fog Lamp
Replacement (Platinum))
* Control Module References (See: Testing and Inspection/Programming and Relearning) for BCM replacement, setup, and programming
B2540
DTC B2540
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 B2540 02
- Rear Fog Lamp Control Circuit Short to Ground
DTC B2540 05
- Rear Fog Lamp Control Circuit Short to Battery or Open
Diagnostic Fault Information
Circuit/System Description
When the rear fog lamp switch is placed in the ON position, ground is applied to the auxiliary body control module (XBCM) through the rear fog
lamp switch circuit. The XBCM then applies voltage to the rear fog lamp control circuit to the rear fog lamp.
Conditions for Running the DTC
* Battery voltage must be between 9-16 V.
* Rear fog lamps ON.
Conditions for Setting the DTC
B2540 02
The BCM detects a short to ground in the rear fog lamp switch signal circuit.
Showing posts with label test the control circuit for a short to ground. If the circuit tests normal. Show all posts
Showing posts with label test the control circuit for a short to ground. If the circuit tests normal. Show all posts
Monday, December 2, 2019
Saturday, November 9, 2019
2010 Cadillac Truck Escalade RWD V8-6.0L Hybrid Page 115
2010 Cadillac Truck Escalade RWD V8-6.0L Hybrid Page 115
瀚慖f less than the specified range, test the control circuit for a short to ground. If the circuit tests normal, replace the SDM.
6. Install a 3 A fused jumper wire between the control circuit terminals listed below.
* Left roof rail airbag terminal 1 and 2
* Right roof rail airbag terminal 1 and 2
* Driver seat side airbag terminal 1 and 2
* Passenger seat side airbag terminal 1 and 2
* Driver seat belt retractor pretensioner terminal 1 and 2
* Passenger seat belt retractor pretensioner terminal 1 and 2
7. Verify the scan tool Deployment Loop Resistance parameter is less than 2 ohm.
瀚慖f greater than the specified range, test both control circuits terminals for an open/high resistance. If the circuits test normal, replace the
SDM.
8. If all circuits test normal, replace the roof rail air bag, seat side air bag, or seat belt pretensioner.
DTC B0019-B0020
1. Ignition OFF, disconnect the scan tool and disconnect harness connector X200.
2. Wait for 120 seconds and then test for greater than 25 ohm between the appropriate control circuit terminals listed below on the SDM side of
the connector:
* Passenger instrument panel airbag stage 1 terminal 5 and 6 X1
* Passenger instrument panel airbag stage 2 terminal 8 and 7 X1
瀚慖f less than the specified range, test for a short between the control circuits, check each connector and CPA to ensure that the shorting
bars are lifted. If the circuits and shorting bars tests normal, replace the SDM.
3. Ignition ON, test for less than 11 V between the control circuit terminals listed below and ground on the SDM side of the connector:
* Control circuit terminal 5 X1
* Control circuit terminal 6 X1
* Control circuit terminal 8 X1
* Control circuit terminal 7 X1
瀚慖f greater than the specified range, test the control circuit for a short to voltage. If the circuit tests normal, replace the SDM.
4. Ignition OFF, test for greater than 25 ohm between the control circuit terminals listed below and ground on the SDM side of the connector:
* Control circuit terminal 5 X1
* Control circuit terminal 6 X1
* Control circuit terminal 7 X1
* Control circuit terminal 8 X1
瀚慖f less than the specified range, test the control circuit for a short to ground. If the circuit tests normal, replace the SDM.
5. Install a 3 A fused jumper wire between the control circuit terminals listed below.
* Passenger instrument panel airbag stage 1 terminal 5 and 6 X1
* Passenger instrument panel airbag stage 2 terminal 8 and 7 X1
6. Verify the scan tool Deployment Loop Resistance parameter is less than 2 ohm.
瀚慖f greater than the specified range, test both control circuits terminals for an open/high resistance. If the circuits test normal, replace the
SDM.
7. Disconnect the passenger instrument panel air bag harness connector.
8. With the appropriate load tool adaptor, connect special tool J 38715-A in place of the air bag.
9. Ignition ON, test for less than 11 V between the control circuit terminals listed below and ground:
* Control circuit terminal A1
* Control circuit terminal A2
* Control circuit terminal B1
* Control circuit terminal B2
瀚慖f greater than the specified range, test the control circuit for a short to voltage.
10. Ignition OFF, test for greater than 25 ohm between the control circuit terminals listed below and ground:
瀚慖f less than the specified range, test the control circuit for a short to ground. If the circuit tests normal, replace the SDM.
6. Install a 3 A fused jumper wire between the control circuit terminals listed below.
* Left roof rail airbag terminal 1 and 2
* Right roof rail airbag terminal 1 and 2
* Driver seat side airbag terminal 1 and 2
* Passenger seat side airbag terminal 1 and 2
* Driver seat belt retractor pretensioner terminal 1 and 2
* Passenger seat belt retractor pretensioner terminal 1 and 2
7. Verify the scan tool Deployment Loop Resistance parameter is less than 2 ohm.
瀚慖f greater than the specified range, test both control circuits terminals for an open/high resistance. If the circuits test normal, replace the
SDM.
8. If all circuits test normal, replace the roof rail air bag, seat side air bag, or seat belt pretensioner.
DTC B0019-B0020
1. Ignition OFF, disconnect the scan tool and disconnect harness connector X200.
2. Wait for 120 seconds and then test for greater than 25 ohm between the appropriate control circuit terminals listed below on the SDM side of
the connector:
* Passenger instrument panel airbag stage 1 terminal 5 and 6 X1
* Passenger instrument panel airbag stage 2 terminal 8 and 7 X1
瀚慖f less than the specified range, test for a short between the control circuits, check each connector and CPA to ensure that the shorting
bars are lifted. If the circuits and shorting bars tests normal, replace the SDM.
3. Ignition ON, test for less than 11 V between the control circuit terminals listed below and ground on the SDM side of the connector:
* Control circuit terminal 5 X1
* Control circuit terminal 6 X1
* Control circuit terminal 8 X1
* Control circuit terminal 7 X1
瀚慖f greater than the specified range, test the control circuit for a short to voltage. If the circuit tests normal, replace the SDM.
4. Ignition OFF, test for greater than 25 ohm between the control circuit terminals listed below and ground on the SDM side of the connector:
* Control circuit terminal 5 X1
* Control circuit terminal 6 X1
* Control circuit terminal 7 X1
* Control circuit terminal 8 X1
瀚慖f less than the specified range, test the control circuit for a short to ground. If the circuit tests normal, replace the SDM.
5. Install a 3 A fused jumper wire between the control circuit terminals listed below.
* Passenger instrument panel airbag stage 1 terminal 5 and 6 X1
* Passenger instrument panel airbag stage 2 terminal 8 and 7 X1
6. Verify the scan tool Deployment Loop Resistance parameter is less than 2 ohm.
瀚慖f greater than the specified range, test both control circuits terminals for an open/high resistance. If the circuits test normal, replace the
SDM.
7. Disconnect the passenger instrument panel air bag harness connector.
8. With the appropriate load tool adaptor, connect special tool J 38715-A in place of the air bag.
9. Ignition ON, test for less than 11 V between the control circuit terminals listed below and ground:
* Control circuit terminal A1
* Control circuit terminal A2
* Control circuit terminal B1
* Control circuit terminal B2
瀚慖f greater than the specified range, test the control circuit for a short to voltage.
10. Ignition OFF, test for greater than 25 ohm between the control circuit terminals listed below and ground:
Tuesday, November 5, 2019
2010 Cadillac Truck Escalade EXT AWD V8-6.2L Page 115
2010 Cadillac Truck Escalade EXT AWD V8-6.2L Page 115
瀚慖f less than the specified range, test the control circuit for a short to ground. If the circuit tests normal, replace the SDM.
6. Install a 3 A fused jumper wire between the control circuit terminals listed below.
* Left roof rail airbag terminal 1 and 2
* Right roof rail airbag terminal 1 and 2
* Driver seat side airbag terminal 1 and 2
* Passenger seat side airbag terminal 1 and 2
* Driver seat belt retractor pretensioner terminal 1 and 2
* Passenger seat belt retractor pretensioner terminal 1 and 2
7. Verify the scan tool Deployment Loop Resistance parameter is less than 2 ohm.
瀚慖f greater than the specified range, test both control circuits terminals for an open/high resistance. If the circuits test normal, replace the
SDM.
8. If all circuits test normal, replace the roof rail air bag, seat side air bag, or seat belt pretensioner.
DTC B0019-B0020
1. Ignition OFF, disconnect the scan tool and disconnect harness connector X200.
2. Wait for 120 seconds and then test for greater than 25 ohm between the appropriate control circuit terminals listed below on the SDM side of
the connector:
* Passenger instrument panel airbag stage 1 terminal 5 and 6 X1
* Passenger instrument panel airbag stage 2 terminal 8 and 7 X1
瀚慖f less than the specified range, test for a short between the control circuits, check each connector and CPA to ensure that the shorting
bars are lifted. If the circuits and shorting bars tests normal, replace the SDM.
3. Ignition ON, test for less than 11 V between the control circuit terminals listed below and ground on the SDM side of the connector:
* Control circuit terminal 5 X1
* Control circuit terminal 6 X1
* Control circuit terminal 8 X1
* Control circuit terminal 7 X1
瀚慖f greater than the specified range, test the control circuit for a short to voltage. If the circuit tests normal, replace the SDM.
4. Ignition OFF, test for greater than 25 ohm between the control circuit terminals listed below and ground on the SDM side of the connector:
* Control circuit terminal 5 X1
* Control circuit terminal 6 X1
* Control circuit terminal 7 X1
* Control circuit terminal 8 X1
瀚慖f less than the specified range, test the control circuit for a short to ground. If the circuit tests normal, replace the SDM.
5. Install a 3 A fused jumper wire between the control circuit terminals listed below.
* Passenger instrument panel airbag stage 1 terminal 5 and 6 X1
* Passenger instrument panel airbag stage 2 terminal 8 and 7 X1
6. Verify the scan tool Deployment Loop Resistance parameter is less than 2 ohm.
瀚慖f greater than the specified range, test both control circuits terminals for an open/high resistance. If the circuits test normal, replace the
SDM.
7. Disconnect the passenger instrument panel air bag harness connector.
8. With the appropriate load tool adaptor, connect special tool J 38715-A in place of the air bag.
9. Ignition ON, test for less than 11 V between the control circuit terminals listed below and ground:
* Control circuit terminal A1
* Control circuit terminal A2
* Control circuit terminal B1
* Control circuit terminal B2
瀚慖f greater than the specified range, test the control circuit for a short to voltage.
10. Ignition OFF, test for greater than 25 ohm between the control circuit terminals listed below and ground:
瀚慖f less than the specified range, test the control circuit for a short to ground. If the circuit tests normal, replace the SDM.
6. Install a 3 A fused jumper wire between the control circuit terminals listed below.
* Left roof rail airbag terminal 1 and 2
* Right roof rail airbag terminal 1 and 2
* Driver seat side airbag terminal 1 and 2
* Passenger seat side airbag terminal 1 and 2
* Driver seat belt retractor pretensioner terminal 1 and 2
* Passenger seat belt retractor pretensioner terminal 1 and 2
7. Verify the scan tool Deployment Loop Resistance parameter is less than 2 ohm.
瀚慖f greater than the specified range, test both control circuits terminals for an open/high resistance. If the circuits test normal, replace the
SDM.
8. If all circuits test normal, replace the roof rail air bag, seat side air bag, or seat belt pretensioner.
DTC B0019-B0020
1. Ignition OFF, disconnect the scan tool and disconnect harness connector X200.
2. Wait for 120 seconds and then test for greater than 25 ohm between the appropriate control circuit terminals listed below on the SDM side of
the connector:
* Passenger instrument panel airbag stage 1 terminal 5 and 6 X1
* Passenger instrument panel airbag stage 2 terminal 8 and 7 X1
瀚慖f less than the specified range, test for a short between the control circuits, check each connector and CPA to ensure that the shorting
bars are lifted. If the circuits and shorting bars tests normal, replace the SDM.
3. Ignition ON, test for less than 11 V between the control circuit terminals listed below and ground on the SDM side of the connector:
* Control circuit terminal 5 X1
* Control circuit terminal 6 X1
* Control circuit terminal 8 X1
* Control circuit terminal 7 X1
瀚慖f greater than the specified range, test the control circuit for a short to voltage. If the circuit tests normal, replace the SDM.
4. Ignition OFF, test for greater than 25 ohm between the control circuit terminals listed below and ground on the SDM side of the connector:
* Control circuit terminal 5 X1
* Control circuit terminal 6 X1
* Control circuit terminal 7 X1
* Control circuit terminal 8 X1
瀚慖f less than the specified range, test the control circuit for a short to ground. If the circuit tests normal, replace the SDM.
5. Install a 3 A fused jumper wire between the control circuit terminals listed below.
* Passenger instrument panel airbag stage 1 terminal 5 and 6 X1
* Passenger instrument panel airbag stage 2 terminal 8 and 7 X1
6. Verify the scan tool Deployment Loop Resistance parameter is less than 2 ohm.
瀚慖f greater than the specified range, test both control circuits terminals for an open/high resistance. If the circuits test normal, replace the
SDM.
7. Disconnect the passenger instrument panel air bag harness connector.
8. With the appropriate load tool adaptor, connect special tool J 38715-A in place of the air bag.
9. Ignition ON, test for less than 11 V between the control circuit terminals listed below and ground:
* Control circuit terminal A1
* Control circuit terminal A2
* Control circuit terminal B1
* Control circuit terminal B2
瀚慖f greater than the specified range, test the control circuit for a short to voltage.
10. Ignition OFF, test for greater than 25 ohm between the control circuit terminals listed below and ground:
Monday, November 4, 2019
2010 Cadillac Truck Escalade EXT AWD V8-6.2L Page 1057
2010 Cadillac Truck Escalade EXT AWD V8-6.2L Page 1057
瀚慖f test lamp illuminates, test the control circuit for a short to ground. If the circuit tests normal, replace the fuel pump/trailer brake control
module.
7. Ignition ON, test for 3.2-4.1 V between the control circuit terminal C and ground.
瀚慖f less than the specified range, test the control circuit for a short to ground or an open/high resistance. If the circuit tests normal, replace
the fuel pump/trailer brake control module.
瀚慖f greater than the specified range, test the control circuit for a short to voltage. If the circuit tests normal, replace the fuel pump/trailer
brake control module.
8. Ignition ON, test for 3.2-4.1 V between the control circuit terminal A and ground.
瀚慖f less than the specified range, test the control circuit for a short to ground or an open/high resistance. If the circuit tests normal, replace
the fuel pump/trailer brake control module.
瀚慖f greater than the specified range, test the control circuit for a short to voltage. If the circuit tests normal, replace the fuel pump/trailer
brake control module.
9. Ignition ON, test for less than 1 V between the control circuit terminal D and ground.
瀚慖f greater than the specified range, test the control circuit for a short to voltage. If the circuit tests normal, replace the fuel pump/trailer
brake control module.
10. If all circuits test normal, replace the trailer brake solid state relay.
Repair Instructions
Perform the Diagnostic Repair Verification (See: Verification Tests) after completing the diagnostic procedure.
* Trailer Brake Control Relay Replacement (1500) (See: Accessories and Optional Equipment/Towing / Trailer System/Trailer Towing
Relay/Service and Repair/Trailer Brake Control Relay Replacement (1500))Trailer Brake Control Relay Replacement (2500) (See:
Accessories and Optional Equipment/Towing / Trailer System/Trailer Towing Relay/Service and Repair/Trailer Brake Control Relay
Replacement (2500))
* Control Module References (See: Testing and Inspection/Programming and Relearning) for fuel pump/trailer brake control module
replacement, setup, and programming
Gasoline With LY6, or Diesel
DTC C0870, C1112, C1113, C1114, or C1119 (Gasoline With LY6, or Diesel)
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 C0870 00
- Device Voltage Reference Output 1 Circuit
DTC C1112 00
- Trailer Brake Control Relay Low Control Circuit
DTC C1113 01
- Trailer Brake Control Relay High Control Circuit Short to Battery
DTC C1114 00
- Trailer Brake Control Solenoids Control Circuit
DTC C1119 00
- Trailer Brake Control Relay Feedback Circuit
Diagnostic Fault Information
瀚慖f test lamp illuminates, test the control circuit for a short to ground. If the circuit tests normal, replace the fuel pump/trailer brake control
module.
7. Ignition ON, test for 3.2-4.1 V between the control circuit terminal C and ground.
瀚慖f less than the specified range, test the control circuit for a short to ground or an open/high resistance. If the circuit tests normal, replace
the fuel pump/trailer brake control module.
瀚慖f greater than the specified range, test the control circuit for a short to voltage. If the circuit tests normal, replace the fuel pump/trailer
brake control module.
8. Ignition ON, test for 3.2-4.1 V between the control circuit terminal A and ground.
瀚慖f less than the specified range, test the control circuit for a short to ground or an open/high resistance. If the circuit tests normal, replace
the fuel pump/trailer brake control module.
瀚慖f greater than the specified range, test the control circuit for a short to voltage. If the circuit tests normal, replace the fuel pump/trailer
brake control module.
9. Ignition ON, test for less than 1 V between the control circuit terminal D and ground.
瀚慖f greater than the specified range, test the control circuit for a short to voltage. If the circuit tests normal, replace the fuel pump/trailer
brake control module.
10. If all circuits test normal, replace the trailer brake solid state relay.
Repair Instructions
Perform the Diagnostic Repair Verification (See: Verification Tests) after completing the diagnostic procedure.
* Trailer Brake Control Relay Replacement (1500) (See: Accessories and Optional Equipment/Towing / Trailer System/Trailer Towing
Relay/Service and Repair/Trailer Brake Control Relay Replacement (1500))Trailer Brake Control Relay Replacement (2500) (See:
Accessories and Optional Equipment/Towing / Trailer System/Trailer Towing Relay/Service and Repair/Trailer Brake Control Relay
Replacement (2500))
* Control Module References (See: Testing and Inspection/Programming and Relearning) for fuel pump/trailer brake control module
replacement, setup, and programming
Gasoline With LY6, or Diesel
DTC C0870, C1112, C1113, C1114, or C1119 (Gasoline With LY6, or Diesel)
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 C0870 00
- Device Voltage Reference Output 1 Circuit
DTC C1112 00
- Trailer Brake Control Relay Low Control Circuit
DTC C1113 01
- Trailer Brake Control Relay High Control Circuit Short to Battery
DTC C1114 00
- Trailer Brake Control Solenoids Control Circuit
DTC C1119 00
- Trailer Brake Control Relay Feedback Circuit
Diagnostic Fault Information
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