Power Supply and Ground Circuit (8ch Can Gateway)

Diagnosis Procedure

Diagnosis Procedure

1. CHECK FUSE

   Check that the following fuse are not blown.

   Signal name	Fuse No.
   Battery power supply	20
   Ignition power supply	49

   Is the fuse blown (open)?

   YES >>

   Replace the blown fuse after repairing the affected circuit if a fuse is blown.

   NO >>

   GO TO 2.

2. CHECK POWER SUPPLY CIRCUIT

   1. Turn the ignition switch OFF.

   2. Disconnect the connector of 8CH CAN gateway.

   3. Check voltage between 8CH CAN gateway harness connector and ground.

      Terminals			Condition	Voltage (Standard)	Voltage (Reference value)
      (+)		(−)
      8CH CAN gateway		Ground	Ignition switch
      Connector	Terminal
      M37	32		OFF	6 – 16 V	Battery voltage
      	16		ON	7 – 16 V	Battery voltage

   Is the measurement value normal?

   YES >>

   GO TO 3.

   NO >>

   Repair harness or connector.

3. CHECK GROUND CIRCUIT

   Check continuity between 8CH CAN gateway harness connector and ground.

   8CH CAN gateway		Ground	Continuity
   Connector	Terminal
   M37	15		Existed
   	31

   Does continuity exist?

   YES >>

   INSPECTION END

   NO >>

   Repair harness or connector.