A4 Check Circuit 74 (BL) For Short to Ground

- Turn ignition switch to the OFF position.

- Disconnect breakout box cable 22-pin connector from anti-lock brake control module.

- Using Rotunda 73 Digital Multimeter 105-R0051 or equivalent set to ohms, check the resistance of pin 21 at breakout box to a known good ground.

- Is resistance 10K ohms or less?

YES -- Service 74 (BL) for short to ground. Replace fuse 22 (7.5A). Clear all DTCs. Retest system.

NO -- Go to A5. A5 Check Fuse 22 (7.5A) Supply