Diagnostic Test

CHECK FOR AN ACTIVE DTC
1. Turn the ignition on.
2. With the scan tool, read DTCs and record on the repair order.
  Is the DTC active or pending?
  
  Yes
  - Go To 2
  No
  - Test complete. 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.
  - Perform the BODY VERIFICATION TEST. Refer to BODY VERIFICATION TEST .
CHECK THE (G120) PASSENGER DOOR AJAR SWITCH CIRCUIT FOR A SHORT TO VOLTAGE
1. Turn the ignition off.
2. Disconnect the Passenger Door Latch harness connector.
3. Turn the ignition on.
4. Measure the voltage on the (G120) Passenger Door Ajar Switch circuit.
  Is voltage above 5.2 volts?
  
  Yes
  - Repair the (G120) Passenger Door Ajar Switch circuit for a short to voltage.
  - Perform the BODY VERIFICATION TEST. Refer to BODY VERIFICATION TEST .
  No
  - Go To 3
CHECK THE (G120) PASSENGER DOOR AJAR SWITCH CIRCUIT FOR AN OPEN
1. Turn the ignition off.
2. Disconnect the BCM C6 harness connector.
3. Measure the resistance of the (G120) Passenger Door Ajar Switch circuit.
  Is the resistance below 3.0 Ohms?
  
  Yes
  - Go To 3
  No
  - Repair the (G120) Passenger Door Ajar Switch circuit for an open.
  - Perform the BODY VERIFICATION TEST. Refer to BODY VERIFICATION TEST .
CHECK THE ABILITY OF THE BCM TO READ THE PASSENGER DOOR LATCH SIGNAL
1. Connect a jumper across the (G120) Passenger Door Ajar Switch circuit and Ground at the Passenger Door Latch harness connector.
2. Turn the ignition on.
3. With the scan tool, read DTCs.
  Does the scan tool display DTC: B1813-DRIVER DOOR AJAR INPUT CIRCUIT LOW?
  
  Yes
  - Replace the Passenger Door Latch in accordance with the Service Information. Refer to LATCH, DOOR, REMOVAL AND INSTALLATION .
  - 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 AND INSTALLATION .
  - Perform the BODY VERIFICATION TEST. Refer to BODY VERIFICATION TEST .