Operation CHARM: Car repair manuals for everyone.

A12 - Check CKP For Short High - Bias High Fault



^ Key off.

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

^ DVOM 20 volt DC scale.

^ Key on, engine off.

^ Measure voltage between (+)J47 (CKP- I) and (-)J7 (B-) at the breakout box.

^ Is DC voltage less than 0.5 volts?

YES -- Replace ICM. CKP shorted high. Remove all test equipment. Reconnect all components. Clear continuous memory. Rerun quick test.

NO -- Check connectors, service or replace harness. CKP- is shorted high. Remove all test equipment. Reconnect all components. Clear continuous memory. Rerun quick test.