Diagnosis Procedure

Visually check the appearance of the solar cell module for scratches, cracks, and dirt.

GO TO 2.

1. Disconnect 12V battery negative terminal. Refer to "PRECAUTION FOR REMOVING 12V BATTERY ".
2. Move vehicle to an area (indoor acceptable) that the solar cell module can get sufficient sunlight.
3. Cover the solar cell module with a black cloth to shut out the sunlight.
4. Check voltage between 12V battery positive terminal and negative cable terminal.
5. Repeat covering and uncovering the solar cell module with black cloth, and check the voltage change.

   When normal: voltage change is observed 

   NOTE: If the voltage change is too small to judge, put a light source close or perform the operation outside where sunlight is available.

   Is the inspection result normal? 

   YES: GO TO  7.

   Voltage does not change at 0 V. >> GO TO 3.

   Voltage does not change at a constant voltage. >> There is a possibility of diffraction by other circuits. Repair diffraction to start inspection.

1. Install 12V battery positive terminal and negative terminal.
2. Check voltage between coil and body ground.

   (+)		(-)	Voltage (Approx.)
   Coil
   Connector	Terminal	Ground	Battery voltage
   D104	1

   Is the inspection result normal? 

   YES: GO TO 4.

   NO: Check the following items.

   • 10 A fuse (#9)
   • Harness or connector between 12V battery and coil for a break or short

Check voltage between coil and ground.

Is the inspection result normal? 

YES: GO TO 5.

NO: Replace coil.

Check voltage between solar cell module and ground.

Is the inspection result normal? 

YES: GO TO 6.

NO: Repair harness or connector between coil and solar cell module.

Check continuity between solar cell module and ground.

Is the inspection result normal? 

YES: Replace solar cell module.

NO: Repair harness of connector.

1. Install 12V battery positive terminal and negative terminal.
2. Check dark current. Refer to "WORK PROCEDURE ".
   NOTE: If the diode in solar cell module has a malfunction (poor commutation), dark current of 150 mA flows.

   Is dark current normal? 

   YES: INSPECTION END

   NO: GO TO 8.

Remove 10 A fuse (#9) to check dark current.

Is dark current normal? 

YES: GO TO 9.

NO: Excessive dark current in other circuit.

1. Install 10 A fuse (#9).
2. Disconnect connector of solar cell module to check dark current.

   Is dark current normal? 

   YES: Replace solar cell module.

   NO: Excessive dark current in other circuit.