Diagnostic Test

WARNING: This page is about a different car, the 2015 Chrysler 300. However, it is still accessible from the selected car via links, so may be relevant.

CHECK FOR AN ACTIVE DTC
NOTE:
If the scan tool will not communicate with CAN C, proceed to SCAN TOOL DOES NOT COMMUNICATE WITH CAN C. Refer to DIAGNOSIS AND TESTING .
1. With the scan tool, run a Vehicle Scan Report and attached it to the repair order.
2. With the scan tool, erase DTCs.
3. Using the Vehicle Scan Report, along with the When Monitored and Set Conditions above, operate the vehicle in the conditions that set the DTC.
4. With the scan tool, read DTCs.
  Did the DTC return?
  
  Yes
  - Proceed to SCAN TOOL DOES NOT COMMUNICATE WITH CAN C. Refer to DIAGNOSIS AND TESTING .
  No
  - Go To 2
ATTEMPT TO LOCATE AN INTERMITTENT CIRCUIT FAULT
NOTE:
The scan tool LOSS OF COMM TEST will force the modules on the CAN C bus to continuously ping each other.
1. With the scan tool, initiate the LOSS OF COMM TEST.
  NOTE:
  A value above 0 under the NUMBER OF NO RESPONSES can help indicate the location of a circuit fault while wiggling the related CAN C bus circuits.
  
  NOTE:
  The scan tool lag time between pings is almost 1 full second. Keep this in mind while wiggling the wires and connectors.
2. In a systematic manner, wiggle the applicable CAN C circuits at each related module, in-line connector, and Star Connector (if equipped) while monitoring the NUMBER OF NO RESPONSES on the scan tool.
  Did the above test help locate the fault?
  
  Yes
  - Repair as necessary.
  - Perform the BODY VERIFICATION TEST. Refer to STANDARD PROCEDURE .
  No
  - Go To 3
PERFORM VISUAL INSPECTION OF CONNECTORS, TERMINALS AND WIRES
1. Disconnect all CAN C related module harness connectors.
2. Disconnect all related in-line harness connections.
3. Inspect the harness connectors, component connectors, and all male and female terminals for the following conditions:
  - Proper connector installation.
  - Damaged connector locks.
  - Corrosion.
  - 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.
4. Reconnect all CAN C related module harness connectors. Be certain that all harness connectors are fully seated and the connector locks are fully engaged.
5. Reconnect all in-line harness connectors. Be certain that all connectors are fully seated and the connector locks are fully engaged.
6. With the scan tool, erase DTCs.
7. Using the Vehicle Scan Report, along with the When Monitored and Set Conditions above, operate the vehicle in the conditions that set the DTC.
8. With the scan tool, read DTCs.
  Did the DTC return?
  
  Yes
  - Proceed to SCAN TOOL DOES NOT COMMUNICATE WITH CAN C. Refer to DIAGNOSIS AND TESTING .
  No
  - The conditions that caused this DTC to set are no longer present. Test complete.