Mitsubishi Pajero Pinin 1999 Workshop Manual page 517

35B-18
Inspection Procedure 5
Faulty ABS operation
This varies depending on the driving conditions and the road surface conditions,
so problem diagnosis is difficult. However, if a normal diagnosis code is displayed,
carry out the following inspection.
Wheel speed sensor installation check
Wheel speed sensor output voltage check (Refer to P.35B-22.)
Wheel speed sensor check (Refer to P.35B-30.)
ABS rotor check (Refer to P.35B-30.)
Wheel bearing check (Refer to GROUP 26 and GROUP 27 ±
On-vehicle Service.)
Check the following connectors:
A-58, C-25 <L.H. drive vehicles>, C-24 <R.H. drive vehicles>,
A-24, A-85, D-24, D-28
Check the trouble symptom.
Measure at the ABS-ECU connector A-58.
Disconnect the connector, and measure at the harness side
connector.
Resistances between 17 and 18, 15 and 14, 4 and 5, 2 and
1
OK: 1.30 ± 1.58 k Ω
(The sensor harness and connector should be moved while
these inspections are carried out.)
Check the following connector: A-58
Check the trouble symptom.
Replace the hydraulic unit and ABS-ECU.
ABS <4WD> ±
OK
NG
OK
OK
OK
OK
NG
OK
OK
NG
Troubleshooting
Probable cause
Improper installation of wheel speed sensor
Malfunction of wiring harness or connector
Malfunction of wheel speed sensor
Malfunction of ABS rotor
Foreign material adhering to wheel speed sensor
Malfunction of wheel bearing
Malfunction of hydraulic unit and ABS-ECU
NG
Repair
OK
Hydraulic unit check (Refer to P.35B-24.)
NG
Replace the wheel speed sensor.
NG
Repair
NG
Repair
NG
Repair
NG
Check the harness wire.
Between each wheel speed sensor and ABS-ECU
NG
Repair