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

(Some people have issue connecting. LEMON is investigating. For now, use Firefox or change your DNS server)

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Z180




- Key Off.

- Disconnect PCM from vehicle harness.

NOTE: This erases continuous memory, and sets the P1000 code.

- Measure the resistance from SPOUT jack to Pin 36 at the PCM breakout box.

- Is resistance less than 5 ohms?

YES -- GO to Z181. Z181

NO -- SERVICE open SPOUT circuit in harness between PCM and ICM.