Operation CHARM: Car repair manuals for everyone.

SV3 - Verify Rear Sensor Speed Signal at Antilock Control Unit



- Key OFF.

- Remove the RABS II module connector from the antilock electronic control unit.

- Raise the vehicle so that all the wheels are clear of the ground.

- Connect a Hand-Held Automotive Meter, Rotunda 105-00053 or equivalent between RABS II harness connector Pin 10 (Circuit 523-R/PK) and Pin 3 (Circuit 519 -- LG/BK).

- Set the meter to the frequency counter (Hz) setting.

- Gradually spin up the rear wheels.

- Does the frequency increase as the rear wheel speed increases?

YES -- Antilock electronic control unit is receiving a proper signal. Refer to Programmable Speedometer/Odometer Module for further testing.

NO -- Go to Drive Test Code 6, Step DT6.3. 6.3