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Solar Sensor: Testing and Inspection




SUNLOAD SENSOR

Diagnosis Procedure


1. CHECK SUNLOAD SENSOR SIGNAL

1.Turn ignition switch ON.
2.Check voltage between A/C auto amp. harness connector and ground.





NOTE:
- When checking indoors, use a lamp of approximately 60 W. Move the lamp towards and away from the sensor to check.
- The sunload amount produced by direct sunshine in fair weather is equivalent to approximately 0.77 W/
2
m.
Is the inspection result normal?
YES- GO TO 7.
NO- GO TO 2.

2. CHECK SUNLOAD SENSOR POWER SUPPLY

1.Turn ignition switch OFF.
2.Disconnect sunload sensor connector.
3.Turn ignition switch ON.
4.Check voltage between sunload sensor harness connector and ground.





Is the inspection result normal?
YES- GO TO 3.
NO- GO TO 5.

3. CHECK SUNLOAD SENSOR GROUND CIRCUIT FOR OPEN

1.Turn ignition switch OFF.
2.Disconnect A/C auto amp. connector.
3.Check continuity between sunload sensor harness connector and A/C auto amp harness connector.





Is the inspection result normal?
YES- GO TO 4.
NO- Repair harness or connector.

4. REPLACE SUNLOAD SENSOR

1.Replace sunload sensor. Service and Repair.
2.Perform self-diagnosis function step 2. Automatic Air Conditioning.
3.Check self-diagnosis result.
Is "25" or " 25" displayed?
YES- Replace front A/C control (A/C auto amp.). Automatic Air Conditioning.
NO- INSPECTION END

5. CHECK SUNLOAD SENSOR POWER SUPPLY CIRCUIT FOR OPEN

1.Turn ignition switch OFF.
2.Disconnect A/C auto amp. connector.
3.Check continuity between sunload sensor harness connector and A/C auto amp. harness connector.





Is the inspection result normal?
YES- GO TO 6.
NO- Repair harness or connector.

6. CHECK SUNLOAD SENSOR POWER SUPPLY CIRCUIT FOR SHORT

Check continuity between sunload sensor harness connector and ground.





Is the inspection result normal?
YES- Replace front A/C control (A/C auto amp.). Automatic Air Conditioning.
NO- Repair harness or connector.

7. CHECK INTERMITTENT INCIDENT

Check intermittent incident. Intermittent Incident.
Is the inspection result normal?
YES- Replace front A/C control (A/C auto amp.). Automatic Air Conditioning.
NO- Repair or replace malfunctioning parts.
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