Diagnostic Test

VERIFY THE DTC IS ACTIVE
1. Turn the Ignition ON, Engine not running.
2. With the scan tool, record and erase the DTCs.
3. Cycle the Ignition from OFF to ON.
4. With the scan tool, read the DTCs.
  Is the DTC active at this time?
  
  Yes
  - Go To 2
  No
  - Go To 3
CHECK IF BODY CONTROL MODULE (BCM) DTCS ARE PRESENT
1. With the scan tool, read the BCM DTCs.
  Are there any BCM DTCs present?
  
  Yes
  - Perform the appropriate diagnostic procedure. Refer to DIAGNOSTIC CODE INDEX .
  No
  - Using the schematics as a guide, check the Electronic Shift Module (ESM) terminals and connectors for corrosion, damage or pushed out terminals. Pay particular attention to the power and ground circuits. If no problems are found, replace the ESM. Refer to SHIFTER, FLOOR CONSOLE, REMOVAL .
  - Perform the ESM VERIFICATION TEST. Refer to ESM VERIFICATION TEST .
INTERMITTENT WIRING AND CONNECTORS
1. Using the wiring diagram/schematic as a guide, inspect the wiring harness and connectors.
2. Wiggle test the wiring harness and connectors while monitoring the scan tool data relative to this circuit.
3. Look for the data to change or for the DTC to reset during the wiggle test.
4. While monitoring the scan tool data relative to this circuit, move the selector switch to each position several times.
5. Look for the data to change other than as expected or for the DTC to reset.
  Were any problems found?
  
  Yes
  - Repair as necessary.
  - Perform the ESM VERIFICATION TEST. Refer to ESM VERIFICATION TEST .
  No
  - Test complete, the condition or conditions that originally set this DTC are not present at this time.