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 Park Assist Switch LED parameter while pressing and releasing the park assist disable switch. The parameter
should change between On and Off.
Circuit/System Testing
1. Ignition OFF, disconnect the harness connector at the I/P multifunction switch.
2. Ignition ON, verify a test lamp illuminates between the appropriate ignition circuit listed below and ground:
* RPO X88/Z88 ignition circuit terminal 6
* RPO Z75 ignition circuit terminal 4
锟斤拷 If the test lamp does not illuminate, test the ignition circuit for a short to ground or an open/high resistance.
3. Ignition OFF, connect the harness connector at the I/P multifunction switch. Disconnect the X1 harness connector at the object alarm module.
4. Ignition ON, verify the park assist disable LED is not illuminated.
锟斤拷 If the LED is illuminated, test the control circuit for a short to ground. If the circuit tests normal, test or replace the I/P multifunction
switch.
5. Install a 10A fused jumper wire between the control circuit terminal 3 and ground. Verify that the park assist disable LED is illuminated.
锟斤拷 If the LED is not illuminated, test the control circuit for a short to voltage or an open/high resistance. If the circuit tests normal, test or
replace the I/P multifunction switch.
6. If all circuits test normal, replace the object alarm module.
Repair Instructions
Perform the Diagnostic Repair Verification (See: Verification Tests) after completing the diagnostic procedure.
* Rear Object Alarm Module Switch Replacement (Escalade) (See: Accessories and Optional Equipment/Collision Avoidance and Parking
Assist Systems/Parking Assist Switch/Service and Repair/Rear Object Alarm Module Switch Replacement (Escalade))Rear Object Alarm
Module Switch Replacement (Tahoe/Yukon) (See: Accessories and Optional Equipment/Collision Avoidance and Parking Assist
Systems/Parking Assist Switch/Service and Repair/Rear Object Alarm Module Switch Replacement (Tahoe/Yukon))
* Control Module References (See: Testing and Inspection/Programming and Relearning) for Object Alarm Module replacement, setup, and
programming.
B1000
DTC B1000
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 B1000 00
- Electronic Control Unit (ECU) Performance No Additional Information Available
DTC B1000 04
- Side Object Detection Performance - RAM Failure
DTC B1000 08
- Electronic Control Unit (ECU) Performance Signal Invalid
