Terminals Of Ecu
- CHECK POWER STEERING ECU
- Measure the voltage and resistance of the connectors.ECU TERMINALS VOLTAGE SPECIFICATION
Symbols (Terminal No.) Wiring Color Terminal Description Condition Specified Condition PIG (P7-1) - PGND (P7-2) W - W-B Power source Always 10 to 16 V PGND (P7-2) - Body ground W-B - Body ground Power ground Always Below 1 Ω M1 (P9-1) - PGND (P7-2) R - W-B Power steering motor signal With power switch ON (IG), turn the steering wheel to left Below 1 V With power switch ON (IG), turn the steering wheel to right 10 to 16 V M2 (P9-2) - PGND (P7-2) B - W-B Power steering motor signal With power switch ON (IG), turn the steering wheel to left 10 to 16 V With power switch ON (IG), turn the steering wheel to right Below 1 V CANH (P8-1) - CANL (P8-7) B - W CAN communication line Power switch is OFF 54 to 69 Ω SIL (P8-2) - PGND (P7-2) W - W-B Diagnosis communication signal Communication is established by connecting the Techstream (with CAN VIM) to the DLC3 Pulse generation (see Fig 2) IG (P8-6) - PGND (P7-2) B - W-B IG power source Power switch is ON (IG) 10 to 16 V TRQ1 (P10-5) - PGND (P7-2) B - W-B Torque sensor signal With power switch ON (IG), turn the steering wheel to left and right 0.3 to 4.7 V TRQV (P10-6) - PGND (P7-2) Y - W-B Torque sensor voltage source Power switch ON (IG) 7.5 to 8.5 V TRQ2 (P10-7) - PGND (P7-2) R - W-B Torque sensor signal With power switch ON (IG), turn the steering wheel to left and right 0.3 to 4.7 V TRQG (P10-8) - PGND (P7-2) W - W-B Torque sensor ground Always Below 1 Ω - Using an oscilloscope, check waveform 1.
Waveform 1 (Reference)
TOOL SETTING AND CONDITION REFERENCETerminal SIL - Body ground Tool setting 5 V/DIV, 1 ms/DIV Condition Communication is established by connecting the Techstream (with CAN VIM) to the DLC3 HINT:
If the result is not as specified, the ECU may have a malfunction.
- Measure the voltage and resistance of the connectors.