ABS light on Chrysler minivan
ABS light on 2003 Dodge Grand Caravan with the 3.8-litre engine, new ABS pump or ABS motor?
The controller anti-lock brake (CAB) module is located on the right side of the engine compartment. It has a large connector with almost 20 wires connected to it. The CAB requires three power inputs and good ground or it can light the ABS light. First, check fuses 21 and 9 in the integrated power module (IPM). If they’re good, remove the connector at the CAB and test for battery voltage (key off) at pins 9 (dark green/red wire) and 24 (tan/red wire) with a digital volt ohm meter. Then turn the key to RUN and check for battery voltage at pin 10 (dark green/pink wire). If any of these wires is missing power, trace each wire backwards towards the under hood fuse box. Once you repair the corroded or broken power wire, see if the ABS light goes out. If it does, you’ve just saved yourself $500. If the unit has power on all three wires, clean the ground connection near the powertrain control module. If you still have the problem, you may have to replace the unit.
© 2012 Rick Muscoplat