Diagnostic Test

CHECK FOR ENGINE CHARGING SYSTEM DTCS
1. With the scan tool, read Engine DTCs.
  Are there any Engine Charging System DTCs present?
  
  Yes
  - Refer to DTC INDEX and perform the appropriate symptom.
  - Perform NAG1 TRANSMISSION VERIFICATION TEST. Refer to NAG1 TRANSMISSION VERIFICATION TEST .
  No
  - Go To 2
CHECK (F1) IGNITION OFF/RUN/START CONTROL OUTPUT CIRCUIT
1. Turn the ignition off to the lock position.
2. Disconnect the Shift Lever Assembly harness connector.
3. Turn the ignition on.
4. Using a 12-volt test light connected to ground, check the (F1) Ignition Off/Run/Start Control Output circuit in the Shift Lever Assembly 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 3
  No
  - Repair the (F1) Ignition Off/Run/Start Control Output circuit for high resistance.
  - Perform NAG1 TRANSMISSION VERIFICATION TEST. Refer to NAG1 TRANSMISSION VERIFICATION TEST .
CHECK (Z916) GROUND CIRCUIT
1. Turn the ignition off to the lock position.
2. Using a 12-volt test light connected to 12-volts, check the (Z916) Ground circuit in the Shift Lever Assembly 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 4
  - Perform NAG1 TRANSMISSION VERIFICATION TEST. Refer to NAG1 TRANSMISSION VERIFICATION TEST .
  No
  - Repair the (Z916) Ground circuit for high resistance.
SHIFT LEVER ASSEMBLY
1. Reconnect all disconnected harness connectors.
2. With the scan tool, erase Shift Lever DTC's.
3. Start the engine and raise the engine speed to 2000 RPM for at least 10 seconds.
4. With the scan tool, read Shift Lever DTC's.
  Did the DTC P0562-BATTERY VOLTAGE LOW DTC return?
  
  Yes
  - Replace the Shift Lever Assembly per the Service Information
  - Perform NAG1 TRANSMISSION VERIFICATION TEST. Refer to NAG1 TRANSMISSION VERIFICATION TEST .
  No
  - Test Complete.