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

D4 Check Warning Indicator Diode







- Anti-lock brake control module disconnected.

- Key ON.

- Connect the "BK/BL" wire at the anti-lock brake control module connector to ground.

- Check to see that the anti-lock brake indicator does not illuminate when grounded.

- Does the anti-lock brake indicator illuminate?

YES -- Go to D6. D6 Check ABS Relay

NO -- Go to D5. D5 Check Voltage From ABS Relay