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Description and Operation Door Ajar Indicator Description and Operation (w/AN3) or Door Ajar Indicator Electrical Information Reference Circuit Testing Connector Repairs Testing for Intermittent Conditions and Poor Connections Wiring Repairs Scan Tool Reference Control Module References for Scan Tool Information Circuit/System Verification 1. Install a scan tool and with the front doors closed, verify the DDS and PDS door ajar switch parameters are Inactive. If either of the door ajar switch parameters are Active while the doors are closed 2. Open the doors and verify the door ajar switch parameters are Active. If either of the door ajar switch parameters are Inactive while the doors are open 3. With the rear doors closed, verify the BCM door ajar switch parameters are Door Closed. If either of the door ajar switch parameters are Door Ajar while the doors are closed 4. Open the doors and verify the door ajar switch parameters are Door Ajar. If either of the door ajar switch parameters are Door Closed while the doors are open 5. If the door ajar switch inputs to the DDS, PDS, and BCM function normally replace the IPC. Circuit/System Testing Front Door Ajar Switch Circuit Test 1. Ignition OFF, disconnect the harness connector at the affected door latch.
2008 Chevrolet Silverado 1500 2008 ACCESSORIES & EQUIPMENT Vehicle Access - Cab & Chassis Sierra, Cab & Chassis Silverado, Sierra & Silverado
2. Test for less than 1 ohm of resistance between the listed low reference circuit terminal and ground. Driver terminal 8 Passenger terminal 3 If greater than the specified range, test the ground circuit for an open/high resistance. 3. Ignition ON, verify the scan tool door ajar switch parameter is Inactive. If not the specified value, test the listed signal circuit terminal for a short to ground. If Driver terminal 6 Passenger terminal 1 4. Install a 3A fused jumper wire between the listed signal circuit terminal and low reference circuit terminal. Verify the scan tool door ajar switch parameter is Active. Driver terminal 6 to 8 Passenger terminal 1 to 3 5. If all circuits test normal, test or replace the affected door latch. Rear Door Ajar Switch Circuit Test 1. Ignition OFF, disconnect the harness connector at the affected door latch. 2. Test for less than 1 ohm of resistance between the listed low reference circuit terminal and ground. Left terminal 6 Passenger terminal 3 If greater than the specified range, test the ground circuit for an open/high resistance. 3. Ignition ON, verify the scan tool door ajar switch parameter is Door Closed. If not the specified value, test the listed signal circuit terminal for a short to ground. If Left terminal 4 Right terminal 1 4. Install a 3A fused jumper wire between the listed signal circuit terminal and low reference circuit terminal. Verify the scan tool door ajar switch parameter is Door Closed. Left terminal 4 to 6 Passenger terminal 1 to 3 5. If all circuits test normal, test or replace the affected door latch.
2008 Chevrolet Silverado 1500 2008 ACCESSORIES & EQUIPMENT Vehicle Access - Cab & Chassis Sierra, Cab & Chassis Silverado, Sierra & Silverado
Repair Procedures Perform the Diagnostic Repair Verification after completing the diagnostic procedure. Front Side Door Lock Replacement Rear Door Lock Replacement (Extended Cab Upper) or Rear Door Lock Control Module References for the IPC, DDS, PDS, or BCM replacement, setup, and DOOR AJAR INDICATOR MALFUNCTION (W/O AN3) Diagnostic Instructions Perform the Diagnostic System Check - Vehicle prior to using this diagnostic procedure. Review Strategy Based Diagnosis for an overview of the diagnostic approach Diagnostic Procedure Instructions provides an overview of each diagnostic category Diagnostic Fault Information Circuit Short to Ground Open/High Resistance Short to Voltage Signal Performance Left Front Door Ajar Switch 2 1 - - Right Front Door Ajar Switch 2 1 - - Left Rear Door Ajar Switch 2 1 - - Right Rear Door Ajar Switch 2 1 - - Left Front Door Ajar Switch - 1 - - Right Front Door Ajar Switch - 1 - - Left Rear Door Ajar Switch - 1 - - Right Rear Door Ajar Switch - 1 - - 1. Door Ajar Message Always Displayed
2008 Chevrolet Silverado 1500 2008 ACCESSORIES & EQUIPMENT Vehicle Access - Cab & Chassis Sierra, Cab & Chassis Silverado, Sierra & Silverado
Circuit/System Description The BCM receives discrete inputs from ajar switches in the front and rear door latch assemblies Reference Information Schematic Reference Interior Lights Schematics Connector End View Reference Component Connector End Views Description and Operation Door Ajar Indicator Description and Operation (w/AN3) or Door Ajar Indicator Electrical Information Reference Circuit Testing Connector Repairs Testing for Intermittent Conditions and Poor Connections Wiring Repairs Scan Tool Reference Control Module References for scan tool information Circuit/System Verification 2. Door Ajar Message Not Displayed
2008 Chevrolet Silverado 1500 2008 ACCESSORIES & EQUIPMENT Vehicle Access - Cab & Chassis Sierra, Cab & Chassis Silverado, Sierra & Silverado
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