C4 - Check For Spout Open In Harness

^ Key off.

^ Disconnect PCM.

^ Disconnect diagnostic harness ICM tee from ICM only; leave ICM tee connected to vehicle harness.

^ DVOM on 200 ohm scale.

^ Measure resistance between Pin 36 (SPOUT) of the EEC vehicle harness connector and J10 (SPOUT) 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 -- Service SPOUT open in harness between PCM and ICM. Remove all test equipment. Reconnect all components. Clear continuous memory. Rerun quick test.