Diagnosis System
- CHECK DLC3
- Check the DLC3.
The ECU uses ISO 15765-4 for communication. The terminal arrangement of the DLC3 complies with SAE J1962 and matches the ISO 15765-4 format.
Symbol (Terminal No.) 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 11 to 14 V CANH (6) - CANL (14) HIGH-level CAN bus line Ignition switch off* 54 to 67 Ω CANH (6) - CG (4) HIGH-level CAN bus line Ignition switch off* 200 Ω or higher CANL (14) - CG (4) LOW-level CAN bus line Ignition switch off* 200 Ω or higher CANH (6) - BAT (16) HIGH-level CAN bus line Ignition switch off* 6 kΩ or higher CANL (14) - BAT (16) LOW-level CAN bus line Ignition switch off* 6 kΩ or higher NOTE: *: Before measuring the resistance, leave the vehicle as is for at least 1 minute and do not operate the ignition switch, any other switches or the doors.HINT:
Connect the Techstream to the DLC3, turn the ignition switch to ON, and attempt to use the Techstream. If the screen displays a communication error message, a problem exists on the vehicle side or the Techstream side.
- If communication is normal when connecting the Techstream to another vehicle, inspect the DLC3 on the original vehicle.
- If communication is still not possible when connecting the Techstream to another vehicle, the problem is probably in the Techstream itself. Consult the Service Department listed in the Techstream operator's manual.
- Check the DLC3.
- CHECK WARNING LIGHT
- When a problem occurs in the power steering system, the P/S warning light on the combination meter comes on to inform the driver of the problem.