Terminals Of Ecu
- INSPECT INSTRUMENT PANEL J/B ASSY (MULTIPLEX NETWORK BODY ECU)
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
- Disconnect the B4, 1D, 1F and 1M J/B connectors.
- Check the voltage and resistance between each terminal of the wire harness side connectors and body ground.
Standard:
INSTRUMENT PANEL J/B ASSY (MULTIPLEX NETWORK BODY ECU) (DISCONNECTED)Symbols (Terminal No.) Wiring Color Terminal Description Condition Specified Condition BECU (1D-10) -Body ground L-B - Body ground +B (BECU) power supply Constant 10 to 14 V BECU (1F-1) -Body ground SB - Body ground +B (BECU) power supply Constant 10 to 14 V GND 1 (1F-10) -Body ground W-B - Body ground Ground Constant Below 1 Ω GND 2 (1M-9) -Body ground W-B - Body ground Ground Constant Below 1 Ω KSW (B4-21) -Body ground B - Body ground Key unlock waring switch input No key in ignition key cylinder - Yes 10 kΩ or higher -> Below 1 Ω If the result is not as specified, there may be a malfunction on the wire harness side.
- Reconnect the J/B connectors and check the voltage of the terminal of the connector.
Standard:
INSTRUMENT PANEL J/B ASSY (MULTIPLEX NETWORK BODY ECU) (RECONNECTED)Symbols (Terminal No.) Wiring Color Terminal Description Condition Specified Condition DCTY (B6-14) -Body ground L - Body ground Door courtesy switch input Driver side door CLOSED -> OPEN 10 to 14V -> 0 V If the result is not as specified, instrument panel J/B assy (body ECU) may have a malfunction.