Operation CHARM: Car repair manuals for everyone.
Manuals through 2025 now available!

Our trusted friends have launched a new website named LEMON, which has newer manuals. It also contains all the CHARM manuals.

LEMON is the spiritual successor to CHARM, I recommend you try it!

Link: lemon-manuals.la or lemon-manuals.org.ua

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Component Inspection





Component Inspection

1. Check OCV
(1) IG "OFF".
(2) Disconnect OCV connector.
(3) Measure resistance between terminal 1 and 2 of OCV harness connector. (Component Side)
A. Specification :









(4) Is the measured resistance within specification?
YES
1) Substitute with a known-good ECM and check for proper operation.
If the problem is corrected, replace ECM and go to "Verification of Vehicle Repair" procedure.

CAUTION:
There is a memory reset function on scantool that can erase optional parts automatically detected and memorized by PCM.
Before or after testing PCM on the vehicle, use this function to reuse the PCM on the others


NO
1) Substitute with a known-good OCV and check for proper operation.
If the problem is corrected, replace OCV and go to "Verification of Vehicle Repair" procedure.