Diagnosis Procedure
- CHECK SUNLOAD SENSOR POWER SUPPLY
- Turn ignition switch OFF.
- Disconnect sunload sensor connector.
- Turn ignition switch ON.
- Check voltage between sunload sensor harness connector and ground.
+
-
Voltage
(Approx.)
Sunload sensor
Connector
Terminal
M118
1
Ground
5 V
Is the inspection result normal?
YES
GO TO 2.
NO
GO TO 4.
- CHECK SUNLOAD SENSOR GROUND CIRCUIT
- Turn ignition switch OFF.
- Check continuity between sunload sensor harness connector and ground.
Sunload sensor
--
Continuity
Connector
Terminal
M118
3
Ground
Existed
Is the inspection result normal?
YES
GO TO 3.
NO
Repair harness or connector.
- CHECK SUNLOAD SENSOR
Check sunload sensor. Refer to Component Inspection .
Is the inspection result normal?
YES
Replace A/C auto amp. Refer to Removal and Installation .
NO
Replace sunload sensor. Refer to Removal and Installation .
- CHECK SUNLOAD SENSOR POWER SUPPLY CIRCUIT FOR OPEN
- Turn ignition switch OFF.
- Disconnect A/C auto amp. connector.
- Check continuity between sunload sensor harness connector and A/C auto amp. harness connector.
Sunload sensor
A/C auto amp.
Continuity
Connector
Terminal
Connector
Terminal
M118
1
M50
36
Existed
Is the inspection result normal?
YES
GO TO 5.
NO
Repair harness or connector.
- CHECK SUNLOAD SENSOR POWER SUPPLY CIRCUIT FOR GROUND SHORT
Check continuity between sunload sensor harness connector and ground.
Sunload sensor
--
Continuity
Connector
Terminal
M118
1
Ground
Not existed
Is the inspection result normal?
YES
GO TO 6.
NO
Repair harness or connector.
- CHECK SUNLOAD SENSOR POWER SUPPLY CIRCUIT FOR POWER SHORT
- Turn ignition switch ON.
- Check voltage between sunload sensor harness connector and ground.
+
-
Voltage
(Approx.)
Sunload sensor
Connector
Terminal
M118
1
Ground
0 V
Is the inspection result normal?
YES
Replace A/C auto amp. Refer to Removal and Installation .
NO
Repair harness or connector.