Repair Service Manual

REPAIR MANUAL
8
ABS
Diagnosis:
Several problems may occur:
Caution: the ABS sensors cannot be diagnosed with a standard ohmmeter, you must use the DTAM tool.
-Faulty ABS sensor  replace the ABS sensor
-Ring (annular gear) dirty or unsealed
front wheel : place the vehicle on a lift and check the status (cleanliness/sealing) of the ring on the
transmission.
on a rear wheel : remove the drum and check any discrepancy
-Electric problem within the beam, between the sensor and the master cylinder  check with the ohmmeter the
continuity of the circuit between:
- the sensor socket (to unplug)
- The blue socket next to the master cylinder (make sure to connect to the correct wire)
Need two persons to detect the origin of the failure, one to shake the harness at various points and the other one
to detect potential failures of the harness with the ohmmeter.
Check electric power supply: permanent +; after ignition+ and masses.
Check the information displayed by the brake light switch, positive supply.