Test Description

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

1. 3  - Determines if the Ignition Control (IC) module is receiving the CKP sensor 1 signal. If the CKP sensor 1 signal to the ICM is not present, there will be no RPM, spark, or fuel injector pulses.
2. 4  - Ensures that the IC module has the proper voltage supply and ground.
3. 6  - Verifies that the IC module is supplying the 12-volt reference to the sensor.