Diagnostic Test

CHECK FOR AN ACTIVE DTC
1. Perform any Service Bulletins that may apply.
2. Turn the ignition on.
3. With the scan tool, read CDCM DTCs and record on the repair order.
4. With the scan tool, read and record Environmental Data to help identify the conditions in which the DTC was set.
5. With the scan tool, erase CDCM DTCs.
6. Cycle the ignition from off to on.
7. With the scan tool, read CDCM 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 CONNECTIONS ON ACCELEROMETER AND VEHICLE DYNAMICS CONTROL UNIT
1. Check for loose, damaged or corroded connections on the front left accelerometer on wheel or on the vehicle dynamics control unit.
  Are there any loose or damaged connections?
  
  Yes
  - Repair the wiring connections as necessary.
  - Perform the CDCM VERIFICATION TEST. Refer to CDCM VERIFICATION TEST .
  No
  - Go To 3
CHECK WIRING BETWEEN ACCELEROMETER AND VEHICLE DYNAMICS CONTROL UNIT
1. Check the wiring for an open circuit or high resistance between front left accelerometer on wheel and pin C1 of the vehicle dynamics control unit caused by fouled or corroded terminals.
  Check for interrupted wiring continuity or fouled or corroded terminals?
  
  Yes
  - Repair the open circuit or high resistance in the wiring.
  - Perform the CDCM VERIFICATION TEST. Refer to CDCM VERIFICATION TEST .
  No
  - Go To 4
CHECK ACCELEROMETER OPERATION
1. Check the operation of the front left accelerometer on wheel.
  Is the operation of the front left accelerometer on wheel incorrect?
  
  Yes
  - Repair the wiring and connections as necessary insulation to the battery.
  - Perform the CDCM VERIFICATION TEST. Refer to CDCM VERIFICATION TEST .
  No
  - Go To 5
CHECK RELATED HARNESS CONNECTIONS
1. Turn the ignition off.
2. Disconnect the CDCM harness connectors.
3. Disconnect all related in-line harness connections (if equipped).
4. Disconnect the related component harness connectors.
5. 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.
6. Connect the CDCM harness connectors. Be certain that the harness connector is fully seated and the connector lock is fully engaged.
7. Connect all in-line harness connectors (if equipped). Be certain that all connectors are fully seated and the connector locks are fully engaged.
8. Connect the related component harness connectors. Be certain that all connectors are fully seated and the connector locks are fully engaged.
9. With the scan tool, erase DTCs.
10. Using the recorded Event and Environmental Data, along with the When Monitored and Set Conditions above, operate the vehicle in the conditions that set the DTC.
11. With the scan tool, read CDCM DTCs.
  Did the DTC return?
  
  Yes
  - Replace the Chassis Domain Control Module (CDCM) in accordance with the Service Information.
  - Perform the CDCM VERIFICATION TEST. Refer to CDCM VERIFICATION TEST .
  No
  - The wiring or poor connection problem has been repaired.
  - Perform the CDCM VERIFICATION TEST. Refer to CDCM VERIFICATION TEST .