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)

Or, hide this message: temporarily or permanently

F1 Check Power to Control Module







- Disconnect anti-lock brake wiring plug from anti-lock brake control module.

- Connect EEC-IV breakout box 014-00322 with Anti-Lock Test Adapter T90P-50-ALA to the Anti-Lock 55-pin plug wiring harness.

- Set multimeter to read volts DC.

- Turn ignition switch ON.

- Measure voltage between breakout box pins 53 and 60.

- Is voltage reading over 10 volts?

YES -- Go to F4. F4 Check Ground

NO -- Go to F2. F2 Check Anti-Lock Brake Control Module to Ground Wire