2010 Cadillac Truck SRX AWD V6-3.0L Page 858
Connector End View Reference
Component Connector End Views (See: Diagrams/Connector Views/Connector End Views By Name)
Description and Operation
Electronic Suspension Control Description and Operation (See: Steering and Suspension/Suspension/Suspension Control ( Automatic - Electronic
)/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
Repairs/Wiring Repairs)
Scan Tool Reference
Control Module References (See: Testing and Inspection/Programming and Relearning) for scan tool information
Circuit/System Verification
Ignition ON, observe the scan tool Vertical Wheel Acceleration parameters. The parameters should be 0 m/s(2) when the vehicle is parked on a
level surface.
Circuit/System Testing
1. Ignition ON, verify that DTC C0870 is not present.
瀚慖f the DTC is present, refer to DTC C0870 (See: C Code Charts/C0870) to diagnose that DTC prior to this diagnostic.
2. Ignition OFF, disconnect the harness connector at the appropriate B161 vertical suspension acceleration sensor.
3. Ignition OFF, open/close doors, and wait 60 seconds. Test for less than 5 ohm between the low reference circuit terminal C and ground.
瀚慖f greater than the specified value, test the low reference circuit for short to voltage or an open/high resistance. If the circuit tests normal,
replace the K19 Suspension Control Module.
4. Ignition ON, test for 4.8-5.2 V between the 5 V reference circuit terminal A and ground.
瀚慖f less than the specified range, test the 5 V reference circuit for a short to ground or an open/high resistance. If the circuit tests normal,
replace the K19 suspension control module.
瀚慖f greater than the specified range, test the 5 V reference circuit for a short to voltage. If the circuit tests normal, replace the K19
suspension control module.
5. Test for 4.8-5.2 V between the signal circuit terminal B and ground.
瀚慖f less than the specified range, test the signal circuit for a short to ground or an open/high resistance. If the circuit tests normal, replace
the K19 suspension control module.
瀚慖f greater than the specified range, test the signal circuit for a short to voltage. If the circuit tests normal, replace the K19 suspension
control module.
6. If all circuits test normal, replace the B161 vertical suspension acceleration sensor. Verify the DTC does not reset. If the DTC resets, replace
the K19 suspension control module
Repair Instructions
Perform the Diagnostic Repair Verification (See: Verification Tests) after completing the diagnostic procedure.
* Electronic Suspension Front Vertical Accelerometer Replacement - Lower (See: Sensors and Switches/Sensors and Switches - Steering and
Suspension/Sensors and Switches - Suspension/Acceleration Sensor/Service and Repair/Electronic Suspension Front Vertical Accelerometer
Replacement - Lower)
* Control Module References (See: Testing and Inspection/Programming and Relearning) for suspension control module replacement, setup
