Diagnosis System
- CHECK DLC3
The vehicle's ECU uses the ISO 15765-4 communication protocol. The terminal arrangement of the DLC3 complies with SAE J1962 and matches the ISO 15765-4 format.
DLC3 TERMINALS RESISTANCE SPECIFICATIONSymbols (Terminal No.) Terminal Description Condition Specified Condition SIL (7) - SG (5) Bus "+" line During transmission Pulse generation CG (4) - Body ground Chassis ground Chassis ground Always Below 1 Ω SG (5) - Body ground Signal ground Signal ground Always Below 1 Ω BAT (16) - Body ground Battery positive Always 11 to 14 V CANH (6) - CANL (14) CAN bus line Power switch is OFF* 54 to 69 Ω CANH (6) - CG (4) HIGH-level CAN bus line Power switch is OFF* 200 kΩ or higher CANL (14) - CG (4) LOW-level CAN bus line Power switch is OFF* 200 kΩ or higher CANH (6) - BAT (16) HIGH-level CAN bus line Power switch is OFF* 6 kΩ or higher CANL (14) - BAT (16) LOW-level CAN bus line Power switch is OFF 6kΩ or higher NOTE: *: Before measuring the resistance, leave the vehicle as is for at least 1 minute and do not operate the ignition switch, other switches or the doors.If the result is not as specified, the DLC3 may have a malfunction. Repair or replace the harness and connector.
HINT:
Connect the cable of the Techstream (with CAN VIM) to the DLC3, turn the power switch ON (IG) and attempt to use the Techstream. If the display indicates that a communication error has occurred, there is a problem either with the vehicle or with the Techstream.
- If communication is normal when the Techstream is connected to another vehicle, inspect the DLC3 on the original vehicle.
- If communication is still not possible when the Techstream is connected to another vehicle, the problem may be in the Techstream itself. Consult the Service Department listed in the Techstream's instruction
- WARNING LIGHT
- When a problem occurs in the electric power steering system, the PS warning is indicated on the multi-display and the master warning light on the combination meter comes on to inform the driver of the problem.