Diagnostic Test

WARNING: This page is about a different car, the 2024 RAM ProMaster EV. However, it is still accessible from the selected car via links, so may be relevant.

CHECK FOR ACTIVE DTC
NOTE:
All Fobs used with this vehicle should be present during this test
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. Cycle the ignition switch from off to on at least five times, leaving the ignition on for a minimum of 90 seconds at each cycle.
5. With the scan tool, read BCM DTCs.
  Did the DTC return?
  
  Yes
  - Go To Next Step.
  No
  - Perform the TESTING FOR INTERMITTENT CONDITIONS procedure. Refer to TESTING FOR AN INTERMITTENT CONDITION .
CONFIGURE THE IGNITION KEY
NOTE:
Before performing this diagnostic test, ensure that there are no Aftermarket cell phone chargers, Aftermarket GPS devices or any other aftermarket electronic equipment/devices that will cause LF interference miscommunication between the LF Antennas and the Key Fob at 125 kHz. This will display a "FOB NOT DETECTED" message displayed in the Cluster.
1. With the scan tool, program the suspected Ignition Key.
2. With the scan tool, erase BCM DTCs.
3. Cycle the ignition switch from off to on at least five times, leaving the ignition on for a minimum of 90 seconds at each cycle.
4. With the scan tool, read the BCM DTCs.
  Does the DTC return?
  
  Yes
  - Go To Next Step.
  No
  - Perform the BODY VERIFICATION TEST. Refer to BODY VERIFICATION TEST .
  - Test complete.
VERIFY PROGRAMMED (LEARNED) KEY FOB FOR THE VEHICLE WITH THE SCAN TOOL
1. Ensure that the suspect Key Fob is being used.
2. With the scan tool, select RF HUB, Misc Functions, and perform the "Key Fob Identification" routine.
3. Does the scan tool verify that the correct Key Fob is programmed (learned) to the vehicle?
  
  Yes
- Go To Next Step.
No
- Not Learned. The Key Fob being tested is already programmed to another vehicle. Replace the Key Fob, program per Service Information, and recheck operation
- Perform the RADIO FREQUENCY HUB (RF-HUB) VERIFICATION TEST.
  Refer to RADIO FREQUENCY (RF HUB) VERIFICATION TEST
  
  .
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.