2010 Cadillac Truck SRX FWD V6-3.0L Page 405

2010 Cadillac Truck SRX FWD V6-3.0L Page 405

瀚慖f DTC is present, refer to Circuit/System Testing.

3. Verify that DTC B0958 21, B0959 21, B0960 21 or B0961 21 is not present.

瀚慖f DTC is present, check the appropriate sensor for contamination with mud, ice or snow. Remove contamination if present and drive

vehicle above 40 km/h (25 MPH). If after driving vehicle above 40 km/h (25 MPH) the DTC is still present, refer to Diagnostic Aids.

4. Verify that DTC B0958 3A, B0959 3A, B0960 3A or B0961 3A is not present.

瀚慖f DTC is present, replace the appropriate sensor with a sensor of correct sensor type.

5. Ignition ON, transmission in REVERSE, verify the scan tool Parking Assist System Status parameter displays Enabled.

Circuit/System Testing

1. Ignition OFF for 30 s, disconnect the harness connector at the appropriate rear object sensor.

2. Test for less than 5 ohm between the low reference circuit terminal 2 and ground.

瀚慖f greater than the specified range, test the low reference circuit for an open/high resistance. If the circuit tests normal, replace the K86

parking assist control module.

3. Ignition ON, transmission in REVERSE, test for 7.5-9.0 V between the 8 V reference circuit terminal 1 and ground.

瀚慖f less than the specified range, test the 8 V reference circuit for an open/high resistance. If the circuit tests normal, replace the K86

parking assist control module.

4. Ignition OFF, remove the malfunctioning object sensor and swap locations with another properly functioning rear object sensor. Connect the

harness connector at both sensors.

5. Ignition ON, verify the DTC is set for the new location in which the malfunctioning sensor is installed.

瀚慖f the DTC does not set for the new location, test the signal circuit terminal 3 for a short to voltage, short to ground, or an open/high

resistance. If the circuit tests normal, replace the K86 parking assist control module.

6. If the DTC sets for the new location in which the malfunctioning sensor is installed, replace the appropriate rear object sensor.

Repair Instructions

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

^ Rear Object Sensor Replacement (See: Accessories and Optional Equipment/Collision Avoidance and Parking Assist Systems/Parking

Assist Distance Sensor/Service and Repair/Rear Object Sensor Replacement)

^ Control Module References (See: Testing and Inspection/Programming and Relearning) for parking assist control module replacement,

programming and setup

B0959

DTC B0958, B0959, B0960, or B0961

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 B0958 01: Parking Aid Rear Sensor Left Corner Circuit Short to Battery

DTC B0958 06: Parking Aid Rear Sensor Left Corner Circuit Low Voltage/Open

DTC B0958 08: Parking Aid Rear Sensor Left Corner Circuit Performance - Signal Invalid

DTC B0958 21: Parking Aid Rear Sensor Left Corner Circuit Incorrect Period

DTC B0958 3A: Parking Aid Rear Sensor Left Corner Circuit Incorrect Component Installed