2010 Cadillac Truck SRX AWD V6-2.8L Turbo 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
