WIRELESS DOOR LOCK CONTROL SYSTEM > TERMINALS OF ECU

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CHECK INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY AND MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU)

E187247E11

  1. Disconnect the MB and H17 main body ECU (multiplex network body ECU) connector.

  2. Disconnect the 2B and 2C instrument panel junction block assembly connector.

  3. Measure the voltage and resistance according to the value(s) in the table below.

    HINT:
    Measure the values on the wire harness side with the connectors disconnected.


    Tester Connection
    		Wiring Color
    		Terminal Description
    		Condition
    		Specified Condition
    2B-6 (GND1) - Body ground
    		W-B - Body ground
    		Ground
    		Always
    		Below 1 Ω
    2C-18 (BECU) - Body ground
    		B - Body ground
    		Auxiliary battery power supply
    		Power switch off
    		11 to 14 V
    H17-3 (GND2) - Body ground
    		W-B - Body ground
    		Ground
    		Always
    		Below 1 Ω
    MB-29 (ACC) - Body ground
    		-
    		ACC power supply
    		Power switch on (ACC)
    		11 to 14 V
    MB-29 (ACC) - Body ground
    		-
    		ACC power supply
    		Power switch off
    		Below 1 V
    MB-31 (ALTB) - Body ground
    		-
    		Auxiliary battery power supply
    		Power switch off
    		11 to 14 V
    MB-32 (IG) - Body ground
    		-
    		Power switch power supply
    		Power switch on (IG)
    		11 to 14 V
    MB-32 (IG) - Body ground
    		-
    		Power switch power supply
    		Power switch off
    		Below 1 V
    If the result is not as specified, there may be a malfunction in the wire harness.

  4. Reconnect the MB and H17 main body ECU (multiplex network body ECU) connector.

  5. Reconnect the 2B and 2C instrument panel junction block assembly connector.

  6. Measure the voltage and check for pulses according to the value(s) in the table below.

    Tester Connection
    		Wiring Color
    		Terminal Description
    		Condition
    		Specified Condition
    2B-1 (ACT-) - Body ground
    		B - Body ground
    		Door lock motor unlock drive output (except driver side)
    		Multiplex network master switch (door control switch) or driver door key cylinder off
    		Below 1 V
    2B-1 (ACT-) - Body ground
    		B - Body ground
    		Door lock motor unlock drive output (except driver side)
    		Multiplex network master switch (door control switch) or driver door key cylinder unlocked
    		11 to 14 V
    2B-8 (ACT+) - Body ground
    		L - Body ground
    		Door lock motor lock drive output (all doors)
    		Multiplex network master switch (door control switch) or driver door key cylinder off
    		Below 1 V
    2B-8 (ACT+) - Body ground
    		L - Body ground
    		Door lock motor lock drive output (all doors)
    		Multiplex network master switch (door control switch) or driver door key cylinder locked
    		11 to 14 V
    2B-5 (ACTD) - Body ground
    		B - Body ground
    		Driver door lock motor unlock drive output
    		Multiplex network master switch (door control switch) or driver door key cylinder off
    		Below 1 V
    2B-5 (ACTD) - Body ground
    		B - Body ground
    		Driver door lock motor unlock drive output
    		Multiplex network master switch (door control switch) or driver door key cylinder unlocked
    		11 to 14 V
    2D-35 (FLCY) - Body ground
    		BR - Body ground
    		Driver door courtesy switch input*1
    Front passenger door courtesy switch input*2
    		Driver door open*1
    Front passenger door open*2
    		Below 1 V
    2D-35 (FLCY) - Body ground
    		BR - Body ground
    		Driver door courtesy switch input*1
    Front passenger door courtesy switch input*2
    		Driver door closed*1
    Front passenger door closed*2
    		11 to 14 V
    2D-36 (FRCY) - Body ground
    		BR - Body ground
    		Front passenger door courtesy switch input*1
    Driver door courtesy switch input*2
    		Front passenger door open*1
    Driver door open*2
    		Below 1 V
    2D-36 (FRCY) - Body ground
    		BR - Body ground
    		Front passenger door courtesy switch input*1
    Driver door courtesy switch input*2
    		Front passenger door closed*1
    Driver door closed*2
    		11 to 14 V
    H18-3 (LCTY) - Body ground
    		G - Body ground
    		Rear door LH courtesy light switch input
    		Rear door LH open
    		Below 1 V
    H18-3 (LCTY) - Body ground
    		G - Body ground
    		Rear door LH courtesy light switch input
    		Rear door LH closed
    		Pulse generation
    H16-6 (RCTY) - Body ground
    		G - Body ground
    		Rear door RH courtesy light switch input
    		Rear door RH open
    		Below 1 V
    H16-6 (RCTY) - Body ground
    		G - Body ground
    		Rear door RH courtesy light switch input
    		Rear door RH closed
    		Pulse generation
    H16-7 (LSFL) - Body ground
    		GR - Body ground
    		Driver door unlock detection switch input*1
    Front passenger door unlock detection switch input*2
    		Driver door unlocked*1
    Front passenger door unlocked*2
    		Below 1 V
    H16-7 (LSFL) - Body ground
    		GR - Body ground
    		Driver door unlock detection switch input*1
    Front passenger door unlock detection switch input*2
    		Power switch off, all doors closed and driver door locked*1
    Power switch off, all doors closed and front passenger door locked*2
    		Pulse generation
    H16-18 (LSFR) - Body ground
    		SB - Body ground
    		Front passenger door unlock detection switch input*1
    Driver door unlock detection switch input*2
    		Front passenger door unlocked*1
    Driver door unlocked*2
    		Below 1 V
    H16-18 (LSFR) - Body ground
    		SB - Body ground
    		Front passenger door unlock detection switch input*1
    Driver door unlock detection switch input*2
    		Power switch off, all doors closed and front passenger door locked*1
    Power switch off, all doors closed and driver door locked*2
    		Pulse generation
    H17-2 (LSWR) - Body ground
    		GR - Body ground
    		Rear door RH unlock detection switch input
    		Rear right door unlocked
    		Below 1 V
    H17-2 (LSWR) - Body ground
    		GR - Body ground
    		Rear door RH unlock detection switch input
    		Power switch off, all doors closed and rear right door locked
    		11 to 14 V
    2D-25 (LSWL) - Body ground
    		GR - Body ground
    		Rear door LH unlock detection switch input
    		Rear door LH unlocked
    		Below 1 V
    2D-25 (LSWL) - Body ground
    		GR - Body ground
    		Rear door LH unlock detection switch input
    		Power switch off, all doors closed and rear door LH locked
    		11 to 14 V
    2C-23 (BZR) - Body ground
    		R - Body ground
    		Wireless door lock buzzer signal
    		Wireless door lock buzzer off
    		Below 1 V
    2C-23 (BZR) - Body ground
    		R - Body ground
    		Wireless door lock buzzer signal
    		Wireless door lock buzzer on
    		Pulse generation
    H16-3 (HAZ) - Body ground
    		Y - Body ground
    		Turn signal flasher relay signal
    		Electrical key transmitter switch not pressed
    		11 to 14 V
    H16-3 (HAZ) - Body ground
    		Y - Body ground
    		Turn signal flasher relay signal
    		Any electrical key transmitter switch pressed
    		Below 1 V
    *1: for LHD
    *2: for RHD
    If the result is not as specified, the main body ECU (multiplex network body ECU) or instrument panel junction block assembly may have a malfunction.


CHECK CERTIFICATION ECU (SMART KEY ECU ASSEMBLY) (w/ Entry Function)

B203498E64

  1. Disconnect the H1 and H2 certification ECU (smart key ECU assembly) connectors.

  2. Measure the resistance and voltage according to the value(s) in the table below.

    Terminal No. (Symbol)
    		Wiring Color
    		Terminal Description
    		Condition
    		Specified Condition
    H1-15 (E) - Body ground
    		W-B - Body ground
    		Ground
    		Always
    		Below 1 Ω
    H1-1 (+B) - H1-15 (E)
    		B - W-B
    		Auxiliary battery power supply
    		Power switch off
    		11 to 14 V
    H1-17 (CUTB) - H1-15 (E)
    		Y - W-B
    		Dark current cut pin
    		Power switch off
    		11 to 14 V

    1. If the result is not as specified, there may be a malfunction in the wire harness.

  3. Reconnect the H1 and H2 certification ECU (smart key ECU assembly) connectors.

  4. Measure the voltage according to the value(s) in the table below.

    Terminal No. (Symbol)
    		Wiring Color
    		Terminal Description
    		Condition
    		Specified Condition
    H1-16 (IG) - H1-15 (E)
    		BE - W-B
    		IG power supply
    		Power switch on (IG)
    		11 to 14 V
    Power switch off
    		Below 1 V
    H2-16 (RSSI) - H1-15 (E)
    		V - W-B
    		Door control receiver output signal
    		Power switch off, all doors closed and electrical key transmitter switch not pressed
    		11 to 14 V
    Power switch off, all doors closed and electrical key transmitter switch pressed
    		Below 2 V
    H2-15 (RDA) - H1-15 (E)
    		Y - W-B
    		Door control receiver data input signal
    		Power switch off, all doors closed and transmitter switch not pressed
    		11 to 14 V pulse generation at regular intervals
    Power switch off, all doors closed and transmitter switch pressed
    		Pulse generation
    H2-5 (RC0) - H1-15 (E)
    		R - W-B
    		Supply battery to door control receiver
    		Power switch off, all doors closed and electrical key transmitter switch pressed
    		4.5 to 5.5 V

    1. If the result is not as specified, the certification ECU (smart key ECU assembly) may have a malfunction.


CHECK CERTIFICATION ECU (SMART KEY ECU ASSEMBLY) (w/o Entry Function)

B203498E73

  1. Disconnect the H143 and H144 certification ECU (smart key ECU assembly) connectors.

  2. Measure the resistance and voltage according to the value(s) in the table below.

    Terminal No. (Symbol)
    		Wiring Color
    		Terminal Description
    		Condition
    		Specified Condition
    H143-15 (E) - Body ground
    		W-B - Body ground
    		Ground
    		Always
    		Below 1 Ω
    H143-1 (+B) - H143-15 (E)
    		B - W-B
    		Auxiliary battery power supply
    		Power switch off
    		11 to 14 V
    H143-17 (CUTB) - H143-15 (E)
    		Y - W-B
    		Dark current cut pin
    		Power switch off
    		11 to 14 V

    1. If the result is not as specified, there may be a malfunction in the wire harness.

  3. Reconnect the H143 and H144 certification ECU (smart key ECU assembly) connectors.

  4. Measure the voltage according to the value(s) in the table below.

    Terminal No. (Symbol)
    		Wiring Color
    		Terminal Description
    		Condition
    		Specified Condition
    H143-16 (IG) - H143-15 (E)
    		BE - W-B
    		IG power supply
    		Power switch on (IG)
    		11 to 14 V
    Power switch off
    		Below 1 V
    H144-16 (RSSI) - H143-15 (E)
    		V - W-B
    		Door control receiver output signal
    		Power switch off, all doors closed and electrical key transmitter switch not pressed
    		11 to 14 V
    Power switch off, all doors closed and electrical key transmitter switch pressed
    		Below 2 V
    H144-15 (RDA) - H143-15 (E)
    		Y - W-B
    		Door control receiver data input signal
    		Power switch off, all doors closed and transmitter switch not pressed
    		11 to 14 V pulse generation at regular intervals
    Power switch off, all doors closed and transmitter switch pressed
    		Pulse generation
    H144-5 (RC0) - H143-15 (E)
    		R - W-B
    		Supply battery to door control receiver
    		Power switch off, all doors closed and electrical key transmitter switch pressed
    		4.5 to 5.5 V

    1. If the result is not as specified, the certification ECU (smart key ECU assembly) may have a malfunction.