Diagnosis Procedure
- CHECK FUSE
- Turn ignition switch OFF.
- Check 10 A fuse, [No. 3, located in fuse block (J/B)].
Is the inspection result normal?
YES
GO TO 2.
NO
Replace the blown fuse after repairing the affected circuit if a fuse is blown.
- CHECK WIPER REVERSE RELAY CONTROL SIGNAL
CONSULT ACTIVE TEST
- Turn ignition switch ON.
- Select "FRONT WIPER" of IPDM E/R active test item.
- With operating the test item, check voltage between IPDM E/R harness connector and ground.
(+)
(-)
Condition
Voltage (Approx.)
IPDM E/R
Connector
Terminal
E9
96
Ground
FRONT WIPER
Lo
Battery voltage
Hi
0 V
Is the inspection result normal?
YES
GO TO 5.
Fixed at 0 V
GO TO 3.
Fixed at battery voltage
Replace IPDM E/R.
- CHECK WIPER REVERSE RELAY POWER SUPPLY CIRCUIT
- Turn ignition switch OFF.
- Remove wiper reverse relay.
- Check voltage between wiper reverse relay harness connector and ground.
Wiper reverse relay
Ground
Voltage (Approx.)
Connector
Terminal
E44
1
Battery voltage
Is the inspection result normal?
YES
GO TO 4.
NO
Repair or replace harness.
- CHECK WIPER REVERSE RELAY CONTROL CIRCUIT
- Disconnect IPDM E/R connector.
- Check continuity between IPDM E/R harness connector and wiper reverse relay harness connector.
IPDM E/R
Wiper reverse relay
Continuity
Connector
Terminal
Connector
Terminal
E9
96
E44
2
Existed
- Check continuity between IPDM E/R harness connector and ground.
IPDM E/R
Ground
Continuity
Connector
Terminal
E9
96
Not existed
Is the inspection result normal?
YES
GO TO 6.
NO
Repair or replace harness.
- CHECK WIPER REVERSE RELAY-1
Check wiper reverse relay. Refer to Component Inspection
Is the inspection result normal?
YES
Wiper reverse relay circuit is normal.
NO
Replace wiper reverse relay.
- CHECK WIPER REVERSE RELAY-2
Check wiper reverse relay. Refer to Component Inspection
Is the inspection result normal?
YES
Replace IPDM E/R.
NO
Replace wiper reverse relay.