ICM2 - ICM Signal From PCM

- Key OFF.

- Install Breakout Box (connect PCM).

- Disconnect the 3-pin distributor connector.

- Crank the engine.

- Measure the voltage between BOB Test Pin ICM and ground.

- Is the voltage greater than 0.6 volts?

Yes -- Go to ICM3. ICM3 - Check ICM Wire For Open

No -- Go to EEC Pinpoint Tests CMP and CKP.

CMP - Camshaft Position Sensor

CKP - Crankshaft Position Sensor

If OK, Replace the PCM.