Terminals Of Ecu
WARNING: This page is about a different car, the 2007 Lexus RX 350. However, it is still accessible from the selected car via links, so may be relevant.
- CHECK INSTRUMENT PANEL J/B ASSEMBLY (BODY ECU)
- Disconnect the B4, 1D, 1F and 1M J/B connectors.
- Measure the voltage and resistance according to the value(s) in the table below.INSTRUMENT PANEL J/B ASSEMBLY (BODY ECU) VOLTAGE AND RESISTANCE
Symbols (Terminal No.) Wiring Color Terminal Description Condition Specified Condition BECU (1D-10) - Body ground L-B - Body ground +B (BECU) power supply Always 10 to 14 V GND1 (1F-10) - Body ground W-B - Body ground Ground Always Below 1 Ω GND2 (1M-9) - Body ground W-B - Body ground Ground Always Below 1 Ω KSW (B4-21) - Body ground B - Body ground Key unlock warning switch input No key is in ignition key cylinder 10 kΩ or higher Key is in ignition key cylinder Below 1 Ω HINT:
If the result is not as specified, there may be a malfunction on the wire harness side.
- Reconnect the 1D, 1F, 1M and B4 connectors.
- Measure the voltage according to the value(s) in the table below.INSTRUMENT PANEL J/B ASSEMBLY (BODY ECU) VOLTAGE
Symbols (Terminal No.) Wiring Color Terminal Description Condition Specified Condition DCTY (B6-14) - Body ground L - Body ground Driver door courtesy switch input Driver's door closed 10 to 14 V Driver's door open Below 1 V