Code 82, 3X Signal Error: Notes

If scan tester did not indicate a cranking RPM, and there is no spark present at the plugs, the problem lies in the electronic ignition control system or the power and ground supplies to the Ignition Control Module (ICM).

The magnetic crank sensor is used to determine engine crankshaft position much the same way as the pick-up coil did in a distributor type system. The sensor is mounted in the block near a 7-slot wheel on the crank shaft. The rotation of the wheel creates a magnetic field in the sensor which induces a voltage signal. The electronic ignition control module then processes this signal and creates the reference pulses needed by the PCM and the signal triggers the correct coil at the correct time.

Code 82 will set when no 3X reference pulses are detected by the PCM during cranking. In this condition, engine will not start, DTC 82 will be stored, and MIL will light. A current DTC 82 is cleared immediately when ignition key is turned OFF. A history DTC 82 will clear after 50 consecutive ignition key cycles without a current DTC 82 being set.

1. This test will determine if the 12-volt supply and a good ground are available at the ignition module.
2. Checks for resistance of the crank sensor and connections.
3. Voltage will vary in this test depending on cranking speed of engine.