Test Description

The numbers below refer to the step number in the diagnostic procedures.

1. 2
   
   This step verifies that the condition is present.
2. 4
   
   This step verifies that the ECM is able to control the fuel injector. If the test lamp flashes, the control module and the wiring are OK.
3. 5
   
   This step isolates the circuit between the multi-way connector and the control module. An open on the fuel injector control circuit will not allow the test lamp to flash.
4. 7
   
   This step inspects for fuel injector harness damage between the multi-way connector and the intake plenum. Careful inspection may isolate the condition before removal of the intake plenum.