DTC Diagnosis Procedure

The terminal "1" circuit supplies power to charge the battery and operate the vehicle's electrical system.

1. CHECK TERMINAL "1" CONNECTION 
   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 system test using the DSS-5000P NI. Refer to the applicable Instruction Manual for proper testing procedures.

2. CHECK TERMINAL "1" CIRCUIT 

   Check voltage between generator connector and ground.

   (+)		(-)	Voltage
   Connector	Terminal
   E204 (VQ40DE) E214 (VK56VD)	1	Ground	Battery voltage

   Is inspection result normal?

   YES

   GO TO 3.

   NO

   Check harness for open between generator and fusible link.

3. CHECK TERMINAL "1" CONNECTION (VOLTAGE DROP TEST) 
   1. Start engine, then engine running at idle and warm.
   2. Check voltage between battery positive terminal and generator connector.

      (+)		(-)	Voltage
      Connector	Terminal
      E204 (VQ40DE) E214 (VK56VD)	1	Battery positive terminal	Less than 0.2 V

   Is the inspection result normal?

   YES

   Terminal "1" circuit is normal. Refer to Work Flow (With DSS-5000P NI) or Work Flow (Without DSS-5000P NI) .

   NO

   Check harness between battery and generator for high resistance.