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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Z80



- Key Off.

- Disconnect ignition coil pack(s).

- Key On, Engine Off.

- Measure the voltage from VBAT pin in the coil pack harness connector COIL jack.

- Is the voltage between 10 and 14 volts?

Yes -- GO to Z81. Z81

No -- SERVICE VBAT open circuit(s) to coil pack(s).