Diagnosis System

CHECK DLC3

The vehicle's combination meter (ECU) uses ISO 15765- 4 for communication. The terminal arrangement of the DLC3 complies with SAE J1962 and matches the ISO 15765-4 format. If there are any open or short circuits in the chart below, perform troubleshooting with the "SFI System" (see HOW TO PROCEED WITH TROUBLESHOOTING ).

TESTER CONNECTION SPECIFIED CONDITION

Tester Connection	Terminal Description	Condition	Specified Condition
SIL (7) - SG (5)	Bus "+" line	During communication	Pulse generation
CG (4) - Body ground	Chassis ground	Always	Below 1 Ω
SG (5) - Body ground	Signal ground	Always	Below 1 Ω
BAT (16) - Body ground	Battery positive	Always	9 to 14 V

Fig 1: Identifying DLC3 Connector Terminal

HINT:

If the display indicates UNABLE TO CONNECT TO VEHICLE when you have connected the cable of the intelligent tester (with CAN VIM) to the DLC3, turned the power switch ON (IG) and operated the tester, there is a problem either on the vehicle side or tester side.

If communication is normal when the tester is connected to another vehicle, inspect the DLC3 on the original vehicle.
If communication is still not possible when the tester is connected to another vehicle, the problem is probably in the tester itself, so consult the Service Department listed in the tester's instruction manual.

Fig 2: Connecting Cable To Intelligent Tester (With CAN VIM) To DLC3
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