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 TERRAIN SWITCH BANK MODULE (TSBM) FOR AN INTERNAL SHORT
1. Turn the ignition off.
2. Disconnect the TSBM harness connector.
3. Turn the ignition on.
4. Wait 10 seconds.
5. With the scan tool, read the BCM DTCs.
  Is the DTC active?
  
  Yes
  - Go To 3
  No
  - Replace the Terrain Switch Bank Module (TSBM) in accordance with the Service Information. Refer to SWITCH, TRANSFER CASE, REMOVAL AND INSTALLATION .
  - Perform the BODY VERIFICATION TEST. Refer to BODY VERIFICATION TEST .
CHECK THE SPEED CONTROL SWITCH FOR AN INTERNAL SHORT
1. Turn the ignition off.
2. Disconnect the Speed Control Switch harness connector.
3. Turn the ignition on.
4. Wait 10 seconds.
5. With the scan tool, read the BCM DTCs.
  Is the DTC active?
  
  Yes
  - Go To 4
  No
  - Replace the Speed Control Switch in accordance with the Service Information. Refer to SWITCH, SPEED CONTROL, REMOVAL AND INSTALLATION .
  - Perform the BODY VERIFICATION TEST. Refer to BODY VERIFICATION TEST .
CHECK THE REAR VIEW CAMERA MODULE (RVCM) FOR AN INTERNAL SHORT
1. Turn the ignition off.
2. Disconnect the RVCM harness connector.
3. Turn the ignition on.
4. Wait 10 seconds.
5. With the scan tool, read the BCM DTCs.
  Is the DTC active?
  
  Yes
  - Go To 5
  No
  - Replace the Rear View Camera Module (RVCM) in accordance with the Service Information. Refer to CAMERA, REAR, REMOVAL AND INSTALLATION .
  - Perform the BODY VERIFICATION TEST. Refer to BODY VERIFICATION TEST .
CHECK THE (D402) LIN BUS 2 CIRCUIT FOR A SHORT TO VOLTAGE
1. Turn the ignition off.
2. Disconnect the BCM C4 harness connector.
3. Disconnect the BCM C8 harness connector.
4. Turn the ignition on.
5. Measure the voltage on the (D402) LIN Bus 2 circuit at the BCM C4 harness connector.
6. Measure the voltage on the (D402) LIN Bus 2 circuit at the BCM C8 harness connector.
  Is there any voltage present at either connection?
  
  Yes
  - Repair the short to voltage on the (D402) LIN Bus 2 circuit.
  - Perform the BODY VERIFICATION TEST. Refer to BODY VERIFICATION TEST .
  No
  - Go To 6
CHECK THE (D402) LIN BUS 2 CIRCUIT FOR A SHORT TO GROUND
1. Turn the ignition off.
2. Check for continuity between ground and the (D402) LIN Bus 2 circuit at the BCM C4 harness connector.
3. Check for continuity between ground and the (D402) LIN Bus 2 circuit at the BCM C8 harness connector.
  Is there continuity between ground and the (D402) LIN Bus 2 circuit?
  
  Yes
  - Repair the short to ground in the (D402) LIN Bus 2 circuit.
  - Perform the BODY VERIFICATION TEST. Refer to BODY VERIFICATION TEST .
  No
  - Go To 7
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. 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.