Diagnostic Test

CHECK FOR AN ACTIVE DTC
1. Turn the ignition on.
2. Open the Rear Driver Door.
3. With the scan tool, read the Body Control Module (BCM) DTCs and record on the repair order.
  Is the DTC active?
  
  Yes
  - Go To 2
  No
  - The condition or conditions that originally set this DTC are not present at this time. Using the wiring diagrams as a guide, check all related splices and connectors for signs of water intrusion, corrosion, pushed out or bent terminals and correct pin tension. If no problems are found, test complete.
  - Perform the BODY VERIFICATION TEST. Refer to BODY VERIFICATION TEST .
CHECK THE (G77) REAR DRIVER DOOR AJAR SWITCH SENSE CIRCUIT FOR A SHORT TO VOLTAGE
1. Turn the ignition off.
2. Disconnect the Rear Driver Door Latch harness connector.
3. Turn the ignition on.
4. Measure the voltage between ground and the (G77) Rear Driver Door Ajar Switch Sense circuit at the Rear Driver Door Latch harness connector.
  Is the voltage greater than 5.2 volts?
  
  Yes
  - Repair the short to voltage in the (G77) Rear Driver Door Ajar Switch Sense circuit.
  - Perform the BODY VERIFICATION TEST. Refer to BODY VERIFICATION TEST .
  No
  - Go To 3
CHECK THE (G77) REAR DRIVER DOOR AJAR SWITCH SENSE CIRCUIT FOR AN OPEN
1. Turn the ignition off.
2. Disconnect the BCM C6/F harness connector.
3. Measure the resistance of the (G77) Rear Driver Door Ajar Switch Sense circuit between the BCM C6/F harness connector and the Rear Driver Door Latch harness connector.
  Is the resistance above 3.0 Ohms?
  
  Yes
  - Repair the open in the (G77) Rear Driver Door Ajar Switch Sense circuit.
  - Perform the BODY VERIFICATION TEST. Refer to BODY VERIFICATION TEST .
  No
  - Go To 4
CHECK THE REAR DRIVER DOOR LATCH
1. Connect a jumper wire between ground and the (G77) Rear Driver Door Ajar Switch Sense circuit at the Rear Driver Door Latch harness connector.
2. Turn the ignition on.
3. With the scan tool, read the BCM DTCs.
  Does the scan tool display DTC: B1815-11-REAR DRIVER DOOR AJAR-CIRCUIT SHORT TO GROUND as active?
  
  Yes
  - Replace the Rear Driver Door Latch in accordance with the Service Information. Refer to LATCH, REAR DOOR, REMOVAL .
  - Perform the BODY VERIFICATION TEST. Refer to BODY VERIFICATION TEST .
  No
  - Replace the Body Control Module (BCM) in accordance with the Service Information. Refer to MODULE, BODY CONTROL (BCM), REMOVAL .
  - Perform the BODY VERIFICATION TEST. Refer to BODY VERIFICATION TEST .