2010 Cadillac Truck SRX FWD V6-3.0L Page 874

2010 Cadillac Truck SRX FWD 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.