Test Description

The numbers below refer to the step numbers in the diagnostic procedure.

1. 3
   
   The Engine Control Module (ECM) ground is located on the ECM mounting bracket. All ground connections should be tight and free of any corrosion. This step determines if the ECM is being grounded properly.
2. 4
   
   This step determines if the battery is being grounded properly. All ground connections should be tight and free of any corrosion.