Terminals Of Ecu
- INSTRUMENT PANEL JUNCTION BLOCK (MULTIPLEX NETWORK BODY ECU)
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
- Disconnect the instrument panel J/B and multiplex network body ECU connectors.
- Check the voltage or resistance according to the value(s) in the table below (wire harness side connector).TERMINAL SPECIFICATIONS
Symbols (Terminal No.) Wiring Color Terminal Description Condition Specified Condition BATB (1A-1) - Body ground B - Body ground +B (power system, generator system) power supply Always 10 to 14 V BECU (1D-10) - Body ground W - Body ground +B (BECU) power supply Always 10 to 14 V ALTB (1D-16) - Body ground W - Body ground +B (power system, generator system) 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 LCTY (1O-7) - Body ground B - Body ground Rear courtesy light switch LH input Rear door LH closed --> opened 10 kΩ or higher --> Below 1 Ω KSW (B4-21) - Body ground B - Body ground Unlock warning switch input No key in ignition key cylinder --> key inserted 10 kΩ or higher --> Below 1 Ω PCTY (B5-23) - Body ground L - Body ground Passenger side courtesy light switch input Passenger side door closed --> opened 10 kΩ or higher --> Below 1 Ω BCTY (B5-25) - Body ground P - Body ground Back door courtesy light switch input Back door closed --> opened 10 kΩ or higher --> Below 1 Ω DCTY (B6-14) - Body ground L - Body ground Driver side courtesy light switch input Driver side door closed --> opened 10 kΩ or higher --> Below 1 Ω RCTY (B6-16) - Body ground GR - Body ground Rear courtesy light switch RH input Rear door RH closed --> opened 10 kΩ or higher --> Below 1 Ω HINT:
If the result is not as specified, there may be a malfunction on the wire harness side.
- Reconnect the instrument panel J/B and multiplex network body ECU connectors.
- Check the voltage according to the value(s) in the table below (ECU side connector).TERMINAL SPECIFICATIONS
Symbols (Terminal No.) Wiring Color Terminal Description Condition Specified Condition HAZ (B4-2) - Body ground Y - Body ground Hazard warning light signal Answer-back OFF --> answer-back ON 10 to 14 V --> Pulse generation KSW (B4-21) - Body ground B - Body ground Unlock warning switch input No key in the ignition key cylinder --> key inserted 10 to 14 V --> 0 V BZR (B7-2) - Body ground W - Body ground Wireless door lock buzzer Wireless door lock buzzer OFF --> ON 0 V --> Pulse generation If the result is not as specified, the instrument panel J/B (multiplex network body ECU) may have a malfunction.