Power Door Lock Control System Terminals Of Ecu

Body Electrical. Lexus Is250, Is220D. Gse20 Ale20
Door Lock. Lexus Is250, Is220D. Gse20 Ale20

  1. CHECK MAIN BODY ECU RH (COWL SIDE JUNCTION BLOCK RH)

  1. CHECK MULTIPLEX NETWORK MASTER SWITCH ASSEMBLY

  1. CHECK DOUBLE DOOR LOCK ECU

Power Door Lock Control System -- Terminals Of Ecu



CHECK MAIN BODY ECU RH (COWL SIDE JUNCTION BLOCK RH)

Lexus Is250, Is220D. Gse20 Ale20.Door Lock.Power Door Lock Control System.Power Door Lock Control System Terminals Of Ecu

  1. Disconnect the P1, J75, RA, RD, RJ, and RK J/B connectors.

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

    Symbols (Terminal No.)
    		Wiring Color
    		Terminal Description
    		Condition
    		Specified Condition
    DCTY (P1-14) - Body ground
    		W - Body ground
    		Driver door courtesy switch
    		Driver door CLOSED → OPEN
    		10 kΩ or higher →
    Below 1 Ω
    RCTY (P1-16) - Body ground
    		O - Body ground
    		Rear right door courtesy switch input
    		Rear right door CLOSED → OPEN
    		10 kΩ or higher →
    Below 1 Ω
    PCTY (J75-23) - Body ground
    		B (*1), V (*2) - Body ground
    		Passenger door courtesy switch input
    		Passenger door CLOSED → OPEN
    		10 kΩ or higher →
    Below 1 Ω
    LCTY (RA-11) - Body ground
    		BR - Body ground
    		Rear left door courtesy switch input
    		Rear left door CLOSED → OPEN
    		10 kΩ or higher →
    Below 1 Ω
    GND2 (RD-7) - Body ground
    		W-B - Body ground
    		Ground
    		Always
    		Below 1 Ω
    IG (RD-14) - Body ground
    		B - Body ground
    		Engine power supply
    		Engine switch on (IG) → off
    		10 to 14 V →
    Below 1 V
    GND1 (RD-17) - Body ground
    		W-B - Body ground
    		Ground
    		Always
    		Below 1 Ω
    ACC (RD-27) - Body ground
    		O - Body ground
    		ACC power supply
    		Engine switch on (ACC) → off
    		10 to 14 V →
    Below 1 V
    L1 (RJ-7) - Body ground
    		BR - Body ground
    		Passenger door control switch LOCK input
    		Passenger door control switch OFF → LOCK
    		10 kΩ or higher →
    Below 1 Ω
    UL1 (RJ-10) - Body ground
    		B - Body ground
    		Passenger door control switch UNLOCK input
    		Passenger door control switch OFF → UNLOCK
    		10 kΩ or higher →
    Below 1 Ω
    BECU (RK-5) - Body ground
    		G-R - Body ground
    		+B (BECU) power supply
    		Always
    		10 to 14 V
    *1: LHD Models
    *2: RHD Models
    If the result is not as specified, there may be a malfunction on the wire harness side.

  3. Reconnect the J/B connectors.

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

    Symbols (Terminal No.)
    		Wiring Color
    		Terminal Description
    		Condition
    		Specified Condition
    LSWL (RA-2) - Body ground
    		R - Body ground
    		Rear left door lock position switch input
    		Rear left door UNLOCK → LOCK
    		Below 1 V →
    10 to 14 V (or pulse generation)
    GSW (RA-7) - GND
    		L - Body ground
    		Center airbag sensor signal
    		Engine switch on (IG)
    		4.5 to 5.5 V
    ACTD (P1-4) - Body ground
    		L (*1), LG (*2) - Body ground
    		Door lock motor UNLOCK drive output (Driver door)
    		Door control switch (Master switch or passenger side switch) or driver side door key cylinder OFF → UNLOCK → OFF
    		Below 1 V →
    10 to 14 V →
    Below 1 V
    ACT+ (RJ-9) - Body ground
    		L - Body ground
    		Door lock motor LOCK drive output (All doors)
    		Door control switch (Master switch or passenger side switch) or driver side door key cylinder OFF → LOCK → OFF
    		Below 1 V →
    10 to 14 V →
    Below 1 V
    ACT- (RJ-17) - Body ground
    		LG - Body ground
    		Door lock motor UNLOCK drive output (All doors)
    		Door control switch (Master switch or passenger side switch) or driver side door key cylinder OFF → UNLOCK → OFF
    		Below 1 V →
    10 to 14 V →
    Below 1 V
    LSWR (J75-5) - Body ground
    		V - Body ground
    		Rear right door lock position switch input
    		Rear right door UNLOCK → LOCK
    		Below 1 V →
    10 to 14 V (or pulse generation)
    LSWP (J75-27) - Body ground
    		W - Body ground
    		Passenger door lock position switch input
    		Passenger door UNLOCK → LOCK
    		Below 1 V →
    10 to 14 V (or pulse generation)
    If the result is not as specified, the main body ECU RH (cowl side J/B RH) may have a malfunction.

CHECK MULTIPLEX NETWORK MASTER SWITCH ASSEMBLY

Lexus Is250, Is220D. Gse20 Ale20.Door Lock.Power Door Lock Control System.Power Door Lock Control System Terminals Of Ecu

  1. Disconnect the M7 switch connector.

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

    Symbols (Terminal No.)
    		Wiring Color
    		Terminal Description
    		Condition
    		Specified Condition
    CPUB (M7-9) - GND (M7-2)
    		G - W-B
    		Battery power supply
    		Always
    		10 to 14 V
    BDR (M7-10) - GND (M7-2)
    		L - W-B
    		Battery power supply
    		Always
    		10 to 14 V
    SIG (M7-20) - GND (M7-2)
    		B - W-B
    		SIG power supply
    		Engine switch on (IG) → off
    		10 to 14 V →
    Below 1 V
    GND (M7-2) - Body ground
    		W-B - Body ground
    		Ground
    		Always
    		Below 1 Ω
    KL (M7-4) - GND (M7-2)
    		L - W-B
    		Door key-linked door lock input
    		Using key, operate driver door lock cylinder to LOCK → UNLOCK
    		Below 1 Ω →
    10 kΩ or higher
    KUL (M7-14) - GND (M7-2)
    		W - W-B
    		Door key-linked door unlock input
    		Using key, operate driver door lock cylinder to LOCK → UNLOCK
    		Below 1 Ω →
    10 kΩ or higher
    LSW (M7-16) - GND (M7-2)
    		SB - W-B
    		Driver side door lock position switch input
    		Driver side door is unlocked → locked
    		Below 1 Ω →
    10 kΩ or higher
    If the result is not as specified, there may be a malfunction on the wire harness side.

CHECK DOUBLE DOOR LOCK ECU

Lexus Is250, Is220D. Gse20 Ale20.Door Lock.Power Door Lock Control System.Power Door Lock Control System Terminals Of Ecu

  1. Disconnect the P34 ECU connector.

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

    Symbols (Terminal No.)
    		Wiring Color
    		Terminal Description
    		Condition
    		Specified Condition
    +B (P34-1) - Body ground
    		R - Body ground
    		Battery power supply
    		Always
    		10 to 14 V
    CPUB (P34-7) - Body ground
    		LG - Body ground
    		Battery power supply
    		Always
    		10 to 14 V
    GND (P34-14) - Body ground
    		W-B - Body ground
    		Ground
    		Always
    		Below 1 Ω
    MPX1 (P34-9) - Body ground
    		LG - Body ground
    		BEAN signal input/output
    		Always
    		10 kΩ or higher
    If the result is not as specified, there may be a malfunction on the wire harness side.

  3. Reconnect the P34 ECU connector.

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

    Symbols (Terminal No.)
    		Wiring Color
    		Terminal Description
    		Condition
    		Specified Condition
    DLPD (P34-5) - Body ground
    		SB - Body ground
    		Front RH double lock position switch input
    		Double lock UNSET → SET
    		5 V or higher → Below 1 V
    DLPP (P34-6) - Body ground
    		GR - Body ground
    		Front LH double lock position switch input
    		Double lock UNSET → SET
    		5 V or higher → Below 1 V
    DLPR (P34-11) - Body ground
    		L - Body ground
    		Rear RH double lock position switch input
    		Double lock UNSET → SET
    		5 V or higher → Below 1 V
    DLPL (P34-12) - Body ground
    		Y - Body ground
    		Rear LH double lock position switch input
    		Double lock UNSET → SET
    		5 V or higher → Below 1 V
    ACTS (P34-3) - Body ground
    		V - Body ground
    		All door double lock motor set on output
    		Double lock UNSET → SET
    		Below 1 V → 10 to 14 V
    ACTR (P34-4) - Body ground
    		P - Body ground
    		All door double lock motor set off output
    		Double lock SET → UNSET
    		Below 1 V → 10 to 14 V
    If the result is not as specified, the ECU may have a malfunction.