Diagnostic Test

WARNING: This page is about a different car, the 2022 Chrysler Voyager and 2022 Chrysler Pacifica. However, it is still accessible from the selected car via links, so may be relevant.

CHECK FOR AN ACTIVE DTC
1. Turn the ignition on and open one of the front doors.
  NOTE:
  A front door must remain open whenever checking or erasing Video Routing Module (VRM) DTCs.
2. With the scan tool, read VRM DTCs and record on the repair order.
3. With the scan tool, erase DTCs.
4. Cycle the ignition switch from on to off, wait five seconds and then back to on.
5. With the scan tool, read VRM DTCs.
  Did the DTC return?
  
  Yes
  - Go To 2
  No
  - Perform the TESTING FOR AN INTERMITTENT CONDITION procedure. Refer to TESTING FOR AN INTERMITTENT CONDITION .
CHECK THE CABLE CONNECTION AT THE VIDEO ROUTING MODULE (VRM), IN-LINE HARNESS CONNECTOR, AND FRONT MEDIA PORT
NOTE:
- Before testing, check the AUX port, HDMI, USB port and SD slot for damage or debris inside the ports and device connectors that can cause concerns with system operation.
- Use a known good compatible device that works on another same kind system when testing for concerns.
- Check to be sure no other devices are connected to the system during testing.
- The Media hub (with USB, HDMI, AUX, SD slot) can be serviced separately.
1. Turn the ignition off.
2. Inspect the Front Media Port harness connector for a secure and undamaged connection.
3. Inspect the VRM harness connector for a secure and undamaged connection.
4. Using the appropriate SYSTEM WIRING DIAGRAMS as a guide, check any in-line harness connectors for a secure and undamaged connection.
  Are the connections secure and undamaged?
  
  Yes
  - Go To 3
  No
  - Repair the cable connection as needed and check video operation.
  - Perform the BODY VERIFICATION TEST. Refer to BODY VERIFICATION TEST .
TEST THE (J105) VIDEO SCREEN CABLE
1. Turn the ignition off.
2. Disconnect the Front Media Port harness connector.
3. Disconnect the VRM harness connector.
4. Connect Special Test Cable (9977-6-12-3) between the Front Media Port harness connector and the VRM harness connector.
5. Turn the ignition on.
6. With the scan tool, erase DTCs.
7. Turn the Radio on and wait 25 seconds.
8. With the scan tool, read DTCs.
  Is the DTC active?
  
  Yes
  - Go To 4
  No
  - Replace the (J105) Video Screen Cable in accordance with the service information.
  - Perform the BODY VERIFICATION TEST. Refer to BODY VERIFICATION TEST .
TEST THE (A934) FUSED B+ CIRCUIT AT THE FRONT MEDIA PORT
1. Turn the ignition off.
2. Disconnect the Front Media Port harness connector.
3. With a 12-volt test light connected to ground, check the (A934) Fused B+ circuit at the Front Media Port harness connector.
  NOTE:
  The test light must illuminate brightly. Compare the brightness to that of a direct connection to the battery
  
  Does the test light illuminate brightly?
  
  Yes
  - Go To 5
  No
  - Repair the (A934) Fused B+ circuit for an open or high resistance.
  - Perform the BODY VERIFICATION TEST. Refer to BODY VERIFICATION TEST .
TEST THE (Z912) GROUND CIRCUIT AT THE FRONT MEDIA PORT
1. With a 12-volt test light connected to 12 volts, check the (Z912) Ground circuit at the Front Media Port harness connector.
  Does the test light illuminate brightly?
  
  Yes
  - Go To 6
  No
  - Repair the (Z912) Ground circuit for an open or high resistance.
  - Perform the BODY VERIFICATION TEST. Refer to BODY VERIFICATION TEST .
TEST THE FRONT MEDIA PORT
1. Obtain a known good Front Media Port before proceeding.
2. Replace the Front Media Port.
3. Reconnect all connectors.
4. Turn the ignition on.
5. With the scan tool, erase DTCs.
6. Turn the Radio on and wait 25 seconds.
7. With the scan tool, read VRM DTCs.
  Is the DTC active?
  
  Yes
  - Go To 7
  No
  - Replace the Front Media Port in accordance with the service information.
  - Perform the BODY VERIFICATION TEST. Refer to BODY VERIFICATION TEST .
CHECK RELATED HARNESS CONNECTIONS
1. Disconnect all VRM 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 VRM 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 VRM DTCs.
  Did the DTC return?
  
  Yes
  - Replace the Video Routing Module (VRM) in accordance with the Service Information. Refer to MODULE, VIDEO ROUTING (VRM), 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.