Diagnosis Procedure 1

1. Turn ignition switch OFF.
2. Verify terminal "1" is clean and tight.

   Is the inspection result normal? 

   YES: GO TO 2.

   NO: Repair terminal "1" connection. Confirm repair by performing complete Charging system test using EXP-800 NI or GR8-1200 NI (if available). Refer to the applicable Instruction Manual for proper testing procedures.

Check voltage between generator connector F15 terminal 1 and ground.

Fig 1: Checking Voltage Between Generator Connector F15 Terminal 1 And Ground

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Is voltage reading as specified? 

YES: GO TO 3.

NO: Check harness for open between generator and fusible link.

1. Start engine, then engine running at idle and warm.
2. Check voltage between battery positive terminal and generator connector F15 terminal 1.

   (+)		(-)	Voltage
   Connector	Terminal
   F15	1	Battery positive terminal	Less than 0.2V

   Fig 2: Checking Voltage Between Battery Positive Terminal And Generator Connector F15 Terminal 1

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   Is the voltage reading as specified? 

   YES: Terminal "1" circuit is normal. Refer to "TROUBLE DIAGNOSIS WITH EXP-800 NI OR GR8-1200 NI " or "TROUBLE DIAGNOSIS WITHOUT EXP-800 NI OR GR8-1200 NI ".

   NO: Check harness between battery and generator for high resistance.