Diagnosis Procedure

WARNING: This page is about a different car, the 2011 Nissan Leaf. However, it is still accessible from the selected car via links, so may be relevant.

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

GO TO 2.
CHECK SOLAR CELL MODULE FUNCTION
1. Disconnect 12V battery negative terminal.
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 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 0V.: 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.

CHECK HARNESS

Install 12V battery positive terminal and negative terminal.

Check voltage between coil and body ground.

VOLTAGE REFERENCE CHART

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

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 COIL

Check voltage between coil and ground.

VOLTAGE REFERENCE CHART

(+)		(-)	Voltage (Approx.)
Coil		(-)	Voltage (Approx.)
Connector	Terminal	Ground	Battery voltage
D104	2	Ground	Battery voltage

Is the inspection result normal?

YES: GO TO 5.

NO: Replace coil.

CHECK HARNESS

Check voltage between solar cell module and ground.

VOLTAGE REFERENCE CHART

(+)		(-)	Voltage (Approx.)
Solar cell module		(-)	Voltage (Approx.)
Connector	Terminal	Ground	Battery voltage
D152	1	Ground	Battery voltage

Is the inspection result normal?

YES: GO TO 6.

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

CHECK HARNESS

Check continuity between solar cell module and ground.

CONTINUITY CHART

Solar cell module		-	Continuity
Connector	Terminal	Ground	Existed
D152	2	Ground	Existed

Is the inspection result normal?

YES: Replace solar cell module.

NO: Repair harness of connector.

CHECK DARK CURRENT
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.
CHECK DARK CURRENT
Remove 10 A-fuse (#9) to check dark current.

Is dark current normal?

YES: GO TO 9.

NO: Excessive dark current in other circuit.
CHECK SOLAR CELL MODULE
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.