Diagnosis System
- CHECK DLC3
- The vehicle's combination meter (ECU) uses CAN and the ISO 9141-2 for communication protocol. The terminal arrangement of the DLC3 complies with SAE J1962 and matches the ISO 9141-2 format.DLC3 CONNECTOR TERMINALS REFERENCE
Symbols (terminal No.) Terminals Description Condition Specified condition CG (4) - Body ground Chassis ground Always Below 1 Ω BAT (16) - Body ground Battery positive Always 11 to 14 V CANH (6) - CANL (14) HIGH-level CAN bus line Ignition switch off 54 Ω to 67 Ω CANH (6) - Body ground HIGH-level CAN bus line Ignition switch off 1 MΩ or higher CANH (6) - CG (4) HIGH-level CAN bus line Ignition switch off 3 KΩ or higher CANL (14) - Body ground LOW-level CAN bus line Ignition switch off 1 MΩ or higher CANL (14) - CG (4) LOW-level CAN bus line Ignition switch off 3 KΩ or higher HINT:
If the display shows an error message after having connected the cable of the intelligent tester to the DLC3, turned ignition switch on (IG) and operated the tester, there is a problem on either the vehicle side or the tool side.
- If communication is normal when the tool is connected to another vehicle, inspect the DLC3 on the original vehicle.
- If communication is still impossible when the tool is connected to another vehicle, the problem is probably in the tool itself, so consult the Service Department listed in the tool's instruction manual.
- The vehicle's combination meter (ECU) uses CAN and the ISO 9141-2 for communication protocol. The terminal arrangement of the DLC3 complies with SAE J1962 and matches the ISO 9141-2 format.