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Home >> Ford >> 1990 >> Bronco II RWD, Standard, M5OD-R1 >> Repair and Diagnosis >> External Pages >> Different car >> Section 5 (Anti-Lock Brake System) >> Trouble Codes >> Code 5
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Code 5

WARNING: This page is about a different car, the 1989 Ford Ranger, 1989 Ford Pickup, 1989 Ford Cab & Chassis, 1989 Ford Bronco II, and 1989 Ford Bronco. However, it is still accessible from the selected car via links, so may be relevant.
  1. If code occurs when vehicle is in "4WD" mode only, go to step 2). If code occurs in "2WD" mode, unplug control module. Drive vehicle and make several normal stops to check rear brake operation. If rear brake operates properly, replace electro-hydraulic valve and retest system. If rear brakes lock-up easily or are grabbing, repair rear brake system (mechanical) and retest system.
  2. If code occurs in "4WD" mode, unplug control module connector. Turn ignition on. Place transfer case in "4WD" mode. Measure voltage at module pin No. 5. If voltage is less than one volt, replace electro-hydraulic valve. If voltage is one volt or more, repair or replace 4WD indicator switch, located on transfer case.
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