ABS MIL Lamp Is Still Illuminated After Ignition Switch on

NOTE: It is likely that the TC MIL lamp and Traction OFF lamp will also illuminate on vehicles with traction control fitted.

POSSIBLE CAUSES:
^ Fuses blown.
^ Faulty wheel speed sensor or harness.
^ Faulty wiring.
^ Faulty ABS / TC CM.


NOTE: On the first ignition cycle after a fault has been successfully diagnosed and corrected the vehicle must be driven to a speed above 20 km/h (12.5 mph) before warning lamps will extinguish. If lamps remain on after this exercise repeat fault diagnosis.

FAULT DIAGNOSIS
1. Check fuses (F7) in battery feed lines and (F16) in ignition line. Battery fuses are located in the left and right hand heelboard fuse boxes. The ignition supply fuse is located in the left hand heelboard fuse box.
2. Unbolt 28 way multi-plug connector from ABS/TC CM.
3. Measure resistance across each wheel speed sensor.
Is value measured 1100 ohms, + 50%?
No - Unplug sensor flying lead and re-measure sensor resistance.

NOTE: Rear sensor connectors are located beneath the rear seat. Seat must be removed to gain access to connector. Forward sensor connectors are located adjacent to the hood catch bracket.

Is value now within range?
Yes - Examine harness between ABS/TC CM and sensor.
No - Renew sensor.

4. Check continuity to ground from ABS / TC CM harness connections 13 and 14. If value is much greater than 0.1 ohms renew harness.
5. With the ignition switch ON, measure voltage between ABS /TC CM harness connection 14 and connections 1 and 2 respectively. If value is not approximately equivalent to battery voltage renew harness.
6. With the ignition switch ON, measure voltage between ABS /TC CM harness connections14 and 15. If value is not approximately equivalent to battery voltage renew harness.
7. Renew ABS /TC CM if fault is not located during the above procedures.