Circuit/System Verification

Ignition - On / Vehicle - In Service Mode
Verify DTC P1F59, P1F5A, P1F5B, P1F5D, or P1F5E is not set
- If any of the DTCs are set
  Refer to Diagnostic Trouble Code (DTC) List - Vehicle .
- Go to next step: If no DTC is set
Ignition/Vehicle - Off
Measure and record the C1 battery voltage at the C1 battery terminals. The C1 battery voltage should stabilize between 12.4 and 12.8 V after 12 minutes of turning the vehicle OFF.
- If not in the specified range
  Refer to Battery Inspection/Test .
- Go to next step: If within the specified range
Vehicle Power Mode State: Service/Run , accessories OFF.
Ignition - On / Vehicle - In Service Mode
Accessories - Off
Measure and record the C1 battery voltage at the C1 battery terminals. The voltage should be at least 1 V greater than the voltage measured in step 3 but less than 15 V.
- If not in the specified range
  Refer to Circuit/System Testing
- Go to next step: If within the specified range
All OK.