Diagnostic Test

WARNING: This page is about a different car, the 2020 Jeep Renegade. However, it is still accessible from the selected car via links, so may be relevant.

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 WINDSHIELD DE-ICER RELAY
1. Turn the ignition off.
2. Remove the Windshield De-Icer Relay from the Power Distribution Center (PDC) Assembly and substitute it with a known good relay.
3. Turn the ignition on.
4. With the scan tool, read BCM DTCs.
  Is the DTC active?
  
  Yes
  - Go To 3
  No
  - Replace the Windshield De-Icer Relay.
  - Perform the BODY VERIFICATION TEST. Refer to BODY VERIFICATION TEST .
CHECK FOR CONTINUITY TO GROUND ON THE (W9) ELECTRIC WINDSHIELD WIPER DE-ICER CONTROL CIRCUIT
1. Turn the ignition off.
2. Remove the Windshield De-Icer Relay from the PDC Assembly.
3. Check for continuity between ground and the (W9) Electric Windshield Wiper De-Icer Control circuit at the Rear Windshield De-Icer Relay, terminal side.
  Is there continuity between ground and the (W9) Electric Windshield Wiper De-Icer Control circuit?
  
  Yes
  - Go To 4
  No
  - Go To 7
CHECK THE PDC ASSEMBLY FOR AN INTERNAL SHORT
1. Disconnect the PDC Assembly C3 harness connector.
2. Check for continuity between ground and the (W9) Electric Windshield Wiper De-Icer Control circuit at the PDC Assembly C3 harness connector.
  Is there continuity between ground and the (W9) Electric Windshield Wiper De-Icer Control circuit?
  
  Yes
  - Go To 5
  No
  - Go To 6
CHECK THE (W9) ELECTRIC WINDSHIELD WIPER DE-ICER CONTROL CIRCUIT FOR A SHORT TO GROUND
1. Disconnect the BCM C4/D harness connector.
2. Check for continuity between ground and the (W9) Electric Windshield Wiper De-Icer Control circuit at the BCM C4/D harness connector.
  Is there continuity between ground and the (W9) Electric Windshield Wiper De-Icer Control circuit?
  
  Yes
  - Repair the short to ground in the (W9) Electric Windshield Wiper De-Icer Control circuit.
  - Perform the BODY VERIFICATION TEST. Refer to BODY VERIFICATION TEST .
  No
  - Go To 7
CHECK RELATED PDC ASSEMBLY HARNESS CONNECTIONS
1. Disconnect all PDC Assembly 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. Reconnect all PDC Assembly harness connectors. Be certain that all harness connectors are fully seated and the connector locks are fully engaged.
6. Reconnect all in-line harness connectors (if equipped). Be certain that all connectors are fully seated and the connector locks are fully engaged.
7. Reconnect 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 Power Distribution Center (PDC) Assembly in accordance with the Service Information.
  - Perform the BODY VERIFICATION TEST. Refer to BODY VERIFICATION TEST .
  No
  - Perform the BODY VERIFICATION TEST. Refer to BODY VERIFICATION TEST .
  - Test complete.
CHECK RELATED BCM 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. Reconnect all BCM harness connectors. Be certain that all harness connectors are fully seated and the connector locks are fully engaged.
6. Reconnect all in-line harness connectors (if equipped). Be certain that all connectors are fully seated and the connector locks are fully engaged.
7. Reconnect 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.