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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C4 Check Left Front Brake Sensor Circuits







- Remove cover from hydraulic control unit.

- Disconnect jumper harness from anti-lock brake control module.

- Check for a short between pin 4 of the 15-pin connector to ground.

- Check for a short between pin 12 of the 15-pin connector to ground.

- Does a short to ground exist at either of the two pins?

YES -- Service or replace jumper, circuit 521 or 522, or left front brake anti-lock sensor.

NO -- Go to C5. C5 Check Left Front Sensor Air Gap