Wednesday, October 14, 2020

2010 Cadillac Truck SRX AWD V6-3.0L Page 874

2010 Cadillac Truck SRX AWD V6-3.0L Page 874



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



1. Engine running, measure and record the voltage at the battery terminals.



2. Verify that the battery voltage is 12.6-15.0 V.



瀚慖f the battery voltage is not within the specified range, refer to Charging System Test (See: Starting and Charging/Testing and



Inspection/Component Tests and General Diagnostics/Charging System Test).



3. Observe the scan tool of the appropriate module Battery Positive parameter. The reading should be between 12.6-15.0 V.



Circuit/System Testing



1. Ignition OFF, disconnect the harness connectors at the appropriate module/sensor.



2. Test for less than 3 Ohms between the ground circuit terminals listed below and ground:



* Terminal H, K83 Parking brake control module



* Terminal 16, K17 Electronic brake control module



* Terminal 1, K19 Suspension control module



* Terminal L X1, K47 Rear differential clutch control module



* Terminal 6, B99 Steering wheel angle sensor



* Terminal 6, B119 Multi-axis acceleration sensor



瀚慖f greater than the specified range, test the ground circuit for an open/high resistance.



3. Ignition ON, verify a test lamp illuminates between the B+/ignition circuits listed below and ground:



* Terminal A, K83 Parking brake control module



* Terminal 1, K17 Electronic brake control module



* Terminal 32, K17 Electronic brake control module



* Terminal 32, K19 Suspension control module



* Terminal M X1, K47 Rear differential clutch control module



* Terminal 5, B99 Steering wheel angle sensor



* Terminal 5, B119 Multi-axis acceleration sensor



瀚慖f the test lamp does not illuminate, test the circuit for an open/high resistance.



4. If all circuits test normal, replace the appropriate module/sensor.



Repair Instructions



Perform the Diagnostic Repair Verification (See: Verification Tests) after completing the diagnostic procedure.



* Steering Angle Sensor Replacement (See: Sensors and Switches/Sensors and Switches - Steering and Suspension/Sensors and Switches -



Steering/Steering Angle Sensor/Service and Repair/Removal and Replacement)



* Vehicle Yaw Sensor with Vehicle Lateral and Longitudinal Accelerometer Replacement (See: Brakes and Traction Control/Antilock Brakes



/ Traction Control Systems/Yaw Rate Sensor/Service and Repair)



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



setup, and programming



C0870



DTC C0870



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.