Mitsubishi MOTORS Space Runner 1999 Workshop Manual Supplement page 797

35B-8
INSPECTION PROCEDURE FOR DIAGNOSIS CODES
Code Nos.11, 12, 13 and 14 Wheel speed sensor open
circuit
Code Nos.21, 22, 23 and 24 Wheel speed sensor short
circuit
Code Nos.11, 12, 13 and 14 are output if the ABS-ECU detects an open circuit
in any one of the four wheel speed sensors.
Code Nos.21, 22, 23 and 24 are output in the following cases.
When there is no input from any one of the four wheel speed sensors when
traveling at 12 km/h or more, even though open circuit verified.
When a chipped or blocked-up ABS rotor is detected during driving at 12 km/h
or more.
Wheel speed sensor installation in-
spection.
OK
Measure at the ABS-ECU connector
A-47.
Disconnect the connector and
measure from the harness side.
Resistance values between 1 and
3, 4 and 5, 6 and 7, 8 and 9.
OK: 1.28 – 1.92 kΩ
OK
Wheel speed sensor output voltage in-
spection (Refer to P.35B-16.)
OK
Check the following connector:
A-47
OK
Check trouble symptoms.
NG
Replace the hydraulic unit assembly.
ABS <2WD> –
NG
Repair
NG
Check the following connectors:
A-22, A-02, B-42, D-15, D-14, D-12
Check trouble symptoms.
NG
Wheel speed sensor inspection
Rotor inspection
NG
Repair
Wheel bearing inspection
Troubleshooting
Probable cause
Malfunction of wheel speed sensor
Malfunction of wiring harness or connector
Malfunction of ABS-ECU
Malfunction of wheel speed sensor
Malfunction of wiring harness or connector
Malfunction of rotor
Malfunction of ABS-ECU
Malfunction of wheel bearing
NG
OK
NG
NG
OK
NG
OK
Repair
Check the harness wire between each
wheel speed sensor and ABS-ECU,
and repair if necessary.
Replace the wheel speed sensor.
Replace the rotor.