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I have a 1999 Isuzu wizard import. The ABS indicator warning light comes on at times.

I am trying to find the rear sensors. Have located and cleaned the front ones but the rear ones elude me.

Colin

From the "Ask Jack" archives - 17 September 2009

The rear wheel speed sensors are fitted into the rear hubs, near the brake callipers. The wire normally follows the control arms and is joined with terminals to the chassis wiring harness.

I would recommend to check and clean the terminals first, then check and clean the actual sensors. Some earlier systems were called 3-channel and the rear brakes shared a single wheel speed sensor, so there is a possibility you'll only find a sensor on the one side.

The ABS system is electronically controlled and can retain some fault codes. It would be advisable to get the system scanned by specialist to see which code is stored. It should lead direct to the problem.

It is near impossible to diagnose these faults without getting the stored fault code out of the system.

This is a scenario where spending a little bit on a computer scan, can save you time and money in the long run.