Diagnostic Test

CHECK FOR AN ACTIVE DTC
1. With the scan tool, read Body Control Module (BCM) DTCs and record on the repair order.
2. Record the Environmental Data.
3. With the scan tool, erase DTCs.
4. Using the recorded Environmental Data, along with the When Monitored and Set Conditions above, operate the vehicle in the conditions that set the DTC.
5. With the scan tool, read BCM DTCs.
  Did the DTC return?
  
  Yes
  - Go To 2
  No
  - Perform the TESTING FOR INTERMITTENT CONDITIONS procedure. Refer to TESTING FOR AN INTERMITTENT CONDITION .
CHECK THE (A902) FUSED B(+) CIRCUIT FOR VOLTAGE
1. Turn the ignition off.
2. Disconnect the Front Wiper Motor harness connector.
3. Turn the ignition on.
4. Measure the voltage on the (A902) Fused B(+) circuit at the Front Wiper Motor harness connector.
  Is the voltage above 9.0 volts?
  
  Yes
  - Go To 3
  No
  - Inspect Fuse F82 (20A) for an open and choose the appropriate repair action below.
  - Fuse is Open: Repair the (A902) Fused B(+) circuit for a short to ground. After the repair is complete, replace Fuse F82 (20A).
  - Fuse is not Open: Repair the (A902) Fused B(+) circuit for an open.
  - Perform the BODY VERIFICATION TEST. Refer to BODY VERIFICATION TEST .
CHECK THE (Z101) GROUND CIRCUIT FOR AN OPEN
1. Turn the ignition off.
2. Measure the resistance between ground and the (Z101) Ground circuit at the Front Wiper Motor harness connector.
  Is the resistance above 3.0 Ohms?
  
  Yes
  - Repair the open in the (Z101) Ground circuit.
  - Perform the BODY VERIFICATION TEST. Refer to BODY VERIFICATION TEST .
  No
  - Go To 4
CHECK THE (D402) LIN BUS 2 CIRCUIT FOR VOLTAGE
1. Turn the ignition on.
2. Measure the voltage on the (D402) LIN Bus 2 circuit at the Front Wiper Motor harness connector.
  Is there any voltage present?
  
  Yes
  - Replace the Front Wiper Motor in accordance with the Service Information. Refer to MOTOR, WIPER, REMOVAL AND INSTALLATION .
  - Perform the BODY VERIFICATION TEST. Refer to BODY VERIFICATION TEST .
  No
  - Go To 5
CHECK THE (D402) LIN BUS 2 CIRCUIT FOR AN OPEN
1. Turn the ignition off.
2. Disconnect the BCM C4/D harness connector.
3. Measure the resistance of the (D402) LIN Bus 2 circuit between the Front Wiper Motor harness connector and BCM C4/D harness connector - terminal 23.
  Is the resistance above 3.0 Ohms?
  
  Yes
  - Repair the open in the (D402) LIN Bus 2 circuit.
  - Perform the BODY VERIFICATION TEST. Refer to BODY VERIFICATION TEST .
  No
  - Go To 6
CHECK RELATED HARNESS CONNECTIONS
1. Disconnect all BCM harness connectors.
2. Disconnect all related in-line harness connections (if equipped).
3. Disconnect the related component harness connectors.
4. Inspect harness connectors, component connectors, and all male and female terminals for the following conditions:
  - Proper connector installation.
  - Damaged connector locks.
  - Corrosion.
  - Other signs of water intrusion.
  - Weather seal damage (if equipped).
  - Bent terminals.
  - Overheating due to a poor connection (terminal may be discolored due to excessive current draw).
  - Terminals that have been pushed back into the connector cavity.
  - Perform a terminal drag test on each connector terminal to verify proper terminal tension.
  Repair any conditions that are found.
5. Connect all BCM harness connectors. Be certain that all harness connectors are fully seated and the connector locks are fully engaged.
6. Connect all in-line harness connectors (if equipped). Be certain that all connectors are fully seated and the connector locks are fully engaged.
7. Connect all related component harness connectors. Be certain that all connectors are fully seated and the connector locks are fully engaged.
8. With the scan tool, erase DTCs.
9. Using the recorded Environmental Data, along with the When Monitored and Set Conditions above, operate the vehicle in the conditions that set the DTC.
10. With the scan tool, read BCM DTCs.
  Did the DTC return?
  
  Yes
  - 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 .
  No
  - Perform the BODY VERIFICATION TEST. Refer to BODY VERIFICATION TEST .
  - Test complete.