Defogger (Circuit Diagnosis)
- CHECK POWER SUPPLY
Check if the following fuse in the fuse block (J/B) is blown.
COMPONENT PARTS
AMPERE
FUSE NO.
Fuse block (J/B)
10 A
22
Is the inspection result normal?
YES
GO TO 2.
NO
If fuse is blown, be sure to eliminate cause of malfunction before installing new fuse.
- CHECK DOOR MIRROR DEFOGGER POWER SUPPLY CIRCUIT
- Turn ignition switch OFF.
- Disconnect door mirror RH.
- Turn ignition switch ON.
- Check voltage between door mirror RH connector D116 terminal 7 and ground.
(+)
(-)
Condition
Voltage (V)
(Approx.)
Door mirror RH
Connector
Terminal
D116
7
Ground
Rear window defogger switch
ON
Battery voltage
OFF
0
Is the inspection result normal?
YES
GO TO 3.
NO
Repair or replace harness.
- CHECK DOOR MIRROR DEFOGGER GROUND CIRCUIT
- Turn ignition switch OFF.
- Check continuity between door mirror RH connector and ground.
Door mirror RH
Ground
Continuity
Connector
Terminal
D116
19
Yes
Is the inspection result normal?
YES
GO TO 4.
NO
Repair or replace harness.
- CHECK DOOR MIRROR DEFOGGER RH
Check door mirror defogger RH. Refer to Component Inspection .
Is the inspection result normal?
YES
GO TO 5.
NO
Replace door mirror RH. Refer to Removal and Installation .
- CHECK INTERMITTENT INCIDENT
Check intermittent incident.
Refer to Intermittent Incident .
Is the inspection result normal?
YES
Check the following:
- Battery power supply circuit
- Fuse block (J/B)
NO
Repair or replace the malfunctioning parts.