Terminals Of Ecu
- CHECK MAIN BODY ECU
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
- Disconnect the 1A, 1B, 1E, and 1H main body ECU connectors.
- Measure the voltages and resistances of the wire harness side connectors.
Standard:
VOLTAGE AND RESISTANCE SPECIFICATIONSymbols (Terminal No.) Wiring Color Terminal Description Condition Specified Condition GND1 (1H-2) - Body ground W-B - Body ground Ground Always Below 1 Ω BECU (1B-4) - Body ground W-R - Body ground Power source circuit (From battery) Always 11 to 14 V BDR1 (1E-9) - Body ground B-Y - Body ground Power source circuit (From battery) Always 11 to 14 V GND2 (1A-7) - Body ground) W - Body ground Ground Always Below 1 Ω If the result is not as specified, there may be a malfunction in the wire harness.
- Reconnect the main body ECU connectors.
- Measure the voltages of the wire harness side connectors.
Standard voltage:
VOLTAGE SPECIFICATIONSymbols (Terminal No.) Wiring Color Terminal Description Condition Specified Condition SIG (1F-8) - Body ground B-R - Body ground Ignition switch signal Ignition switch is OFF Below 1 V Ignition switch is ON 11 to 14 V ACT+ (1L-9) - Body ground L-R - Body ground Driver side door lock motor LOCK drive output Door control switch or Door key cylinder OFF Below 1V Door control switch or driver side door key cylinder ON (LOCK) 11 to 14V → Below 1 V ACT + (1L-6) - Body ground L-R - Body ground Passenger side door lock motor LOCK drive output Door control switch or Door key cylinder OFF Below 1 V Door control switch or driver side door key cylinder ON (LOCK) 11 to 14 V → Below 1 V ACT + (1F-14) - Body ground L-R - Body ground Back door lock motor LOCK drive output Door control switch or Door key cylinder OFF Below 1 V Door control switch or driver side door key cylinder ON (LOCK) 11 to 14 V → Below 1 V ACTD (E6-10) - Body ground L-B - Body ground Driver side door lock motor UNLOCK drive output Door control switch or Door key cylinder OFF Below 1 V Door control switch or driver side door key cylinder ON (UNLOCK) 11 to 14 V → Below 1 V ACT - (1L-18) - Body ground L-B - Body ground Passenger side door lock motor UNLOCK drive output Door control switch or Door key cylinder OFF Below 1 V Door control switch or driver side door key cylinder ON (UNLOCK) 11 to 14 V → Below 1 V ACT- (1F-6) - Body ground L-B - Body ground Back door lock motor UNLOCK drive output Door control switch or Door key cylinder OFF Below 1V Door control switch or driver side door key cylinder ON (UNLOCK) 11 to 14 V → Below 1 V LSWD (E6-21) - Body ground W-R - Body ground Driver side door unlock detection switch input Driver side door unlocked Below 1V Driver side door locked 10 to 14 V LSWP (E6-30) - Body ground B-W - Body ground Passenger side door unlock detection switch input Passenger side door unlocked Below 1V Passenger side door locked 10 to 14 V LSR (1F-4) - Body ground B - Body ground Back door unlock detection switch input Back door unlocked Below 1V Back door locked 10 to 14 V L2 (1K-3) - Body ground L - Body ground Driver side and passenger side door key-linked operated door lock switch input Driver side and passenger side door key cylinder OFF 10 to 14 V Driver side or passenger side door key cylinder ON (LOCK) Below 1 V UL3 (E6-12) - Body ground P - Body ground Driver side door key-linked operated door unlock switch input Driver side door key cylinder OFF 10 to 14 V Driver side door key cylinder ON (UNLOCK) Below 1 V UL2 (E6-22) - Body ground Y-G - Body ground Passenger side door key-linked operated door unlock switch input Passenger side door key cylinder OFF 10 to 14 V Passenger side door key cylinder ON (UNLOCK) Below 1 V BCTY (E7-7) - Body ground W - Body ground Back door courtesy switch and back window courtesy switch input Back door or back window open Below 1V Back door and back window closed 10 to 14V RLCY (E7-11) - Body ground P-B - Body ground Rear LH door courtesy switch input Rear LH door open Below 1V Rear LH door closed 10 to 14 V RRCY (E7-12) - Body ground P-L - Body ground Rear RH door courtesy switch input Rear RH door open Below 1V Rear RH door closed 10 to 14 V DCTY (E7-23) - Body ground R-B - Body ground Driver door courtesy switch input Driver door open Below 1V Driver door closed 10 to 14 V PCTY (E7-24) - Body ground G-Y - Body ground Front passenger door courtesy switch input Front passenger door open Below 1V Front passenger door closed 10 to 14 V KSW (E8-14) - Body ground G-Y - Body ground Key unlock warning switch input Key inserted in ignition key cylinder Below 1V Key removed from ignition key cylinder 10 to 14 V MPX2 (E6-23) - Body ground BR-R - Body ground Multiplex communication signal During communication Signal waveform If the result is not as specified, there may be a malfunction in the wire harness.
- CHECK BACK DOOR ECU
- Disconnect the S2 back door ECU connector.
- Measure the voltages and resistances of the wire harness side connectors.
Standard:
VOLTAGE AND RESISTANCE SPECIFICATIONSymbols (Terminal No.) Wiring Color Terminal Description Condition Specified Condition BECU (S2-5) - Body ground W-R - Body ground Power source circuit (From battery) Always 11 to 14 V GND (S2-3) - Body ground) W-B - Body ground Ground Always Below 1 Ω If the result is not as specified, there may be a malfunction in the wire harness.
- Reconnect the back door ECU connector.
- Measure the voltages of the wire harness side connectors.
Standard voltage:
VOLTAGE SPECIFICATIONSymbols (Terminal No.) Wiring Color Terminal Description Condition Specified Condition SIG (S2-6) Body ground B-R - Body ground Ignition switch signal Ignition switch OFF Below 1V Ignition switch ON 11 to 14 V L (S5-5) - Body ground L - Body ground Back door key-linked operated door lock switch input Back door key cylinder OFF 11 to 14 V Back door key cylinder ON (LOCK) Below 1 V UL (S5-4) - Body ground R - Body ground Back door key-linked operated door unlock switch input Driver side door key cylinder OFF 11 to 14 V Driver side door key cylinder ON (UNLOCK) Below 1 V MPX2 (S2-1) - Body ground BR-R - Body ground Multiplex communication signal During communication Signal waveform If the result is not as specified, there may be a malfunction in the wire harness.