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

F9 Check ABS Control Module Ground







- Ignition switch OFF.

Connector:





- Measure resistance between pin 1 (BK) of the 4-pin connector and ground.

- Is the resistance less than 5 ohms?

YES -- Replace ABS module.

NO -- Service circuit 57 (BK) for open.

NOTE: On early production vehicles, circuit 601 may change color from LB/PK to R through the harness connector. Circuit 603 may change color from DG to Y as it passes through the harness connector.