IGNA20 - Check IGN GND at PCM

^ Key OFF.

^ Reconnect diagnostic cable TFI module tee to Ignition Control Module.

^ DVOM on ohm scale.

^ Disconnect PCM.

^ Measure resistance between Pin 16 (IGN GND) of PCM harness connector and Pin 7 (BAT-) at the breakout box.

^ Is resistance less than 5.0 ohms?

YES -- Replace PCM. Remove all test equipment. Reconnect all components. Clear continuous memory. Rerun quick test.

NO -- GO to IGNA21. IGNA21 - Check For IGN GND at PIP Sensor