Vehicle Stability Control System Terminals Of Ecu

Brake. Toyota Rav4. Aca30, 33, 38 Gsa33 Zsa30, 35
Brake Control. Toyota Rav4. Aca30, 33, 38 Gsa33 Zsa30, 35

  1. SKID CONTROL ECU

  1. CHECK SKID CONTROL ECU

  1. CHECK INSTRUMENT PANEL JUNCTION BLOCK (MAIN BODY ECU)

Vehicle Stability Control System -- Terminals Of Ecu



SKID CONTROL ECU

Toyota Rav4. Aca30, 33, 38 Gsa33 Zsa30, 35.Brake Control.Anti-Lock Brake System.Vehicle Stability Control System Terminals Of Ecu


Terminal No. (Symbol)
Terminal Description
1 (GND1)
Skid control ECU ground
2 (STP)
Stop light switch input
4 (RL-)
Rear LH wheel speed signal input
5 (RL+)
Rear LH wheel speed sensor power supply
6 (FR-)
Front RH wheel speed signal input
7 (FR+)
Front RH wheel speed sensor power supply
11 (SP1)
Speed signal output for speedometer
12 (+BS)
Solenoid valve power supply
13 (GND2)
Motor ground
14 (CANL)
CAN communication line L
16 (RR-)
Rear RH wheel speed signal input
17 (RR+)
Rear RH wheel speed signal power supply
18 (FL-)
Front LH wheel speed signal input
19 (FL+)
Front LH wheel speed sensor power supply
22 (STP2)
Stop light control relay input
24 (BM)
Motor power supply
25 (CANH)
CAN communication line H
27 (FSW+)*1
Brake pedal load sensing switch input
29 (HDCS)*2
Downhill assist control switch input
30 (CSW)
VSC OFF switch input
31 (STPO)
Stop light control relay output
33 (TS)
Sensor diagnosis check input
34 (IG1)
ECU power supply
HINT:
*1: w/ Booster Failure Compensation
*2: w/ Downhill Assist Control

CHECK SKID CONTROL ECU

Toyota Rav4. Aca30, 33, 38 Gsa33 Zsa30, 35.Brake Control.Anti-Lock Brake System.Vehicle Stability Control System Terminals Of Ecu

  1. Disconnect the A67 ECU connector.

  2. Measure the voltage and resistance of the wire harness side connector.

    HINT:
    The voltage cannot be measured with the connector connected to the skid control ECU as the connector is water resistant.

    Skid Control ECU:
    Terminal No. (Symbol)
    		Wiring Color
    		Terminal Description
    		Condition
    		Specified Condition
    A67-1 (GND1) - Body ground
    		W-B - Body ground
    		Skid control ECU ground
    		Always
    		Below 1 Ω
    A67-2 (STP) - Body ground
    		L - Body ground
    		Stop light switch input
    		Stop light switch off
    Brake pedal released
    		Below 1.5 V
    Stop light switch on
    Brake pedal depressed
    		8 to 14 V
    A67-12 (+BS) - Body ground
    		W - Body ground
    		Solenoid valve power supply
    		Always
    		11 to 14 V
    A67-13 (GND2) - Body ground
    		W-B - Body ground
    		Motor ground
    		Always
    		Below 1 Ω
    A67-22 (STP2) - Body ground
    		L - Body ground
    		Stop light control relay input
    		Stop light switch off
    Brake pedal released
    		Below 1.5 V
    Stop light switch on
    Brake pedal depressed
    		8 to 16 V
    A67-24 (BM) - Body ground
    		B - Body ground
    		Motor power supply
    		Always
    		11 to 14 V
    A67-27 (FSW+)*1 - Body ground
    		P - Body ground
    		Brake pedal load sensing switch input
    		Brake pedal load sensing switch on
    Brake pedal not depressed beyond the specified point
    		192 to 234 Ω
    Brake pedal load sensing switch off
    Brake pedal depressed beyond the specified point
    		0.9 to 1.1 kΩ
    A67-29 (HDCS)*2 - Body ground
    		Y - Body ground
    		Downhill assist control switch input
    		Downhill assist control switch on
    		Below 1 Ω
    Downhill assist control switch off
    		10 kΩ or higher
    A67-30 (CSW) - Body ground
    		L - Body ground
    		VSC OFF switch input
    		VSC OFF switch on
    		Below 1 Ω
    VSC OFF switch off
    		10 kΩ or higher
    A67-31 (STPO) - Body ground
    		W - Body ground
    		Stop light control relay output
    		Ignition switch ON
    		11 to 14 V
    A67-34 (IG1) - Body ground
    		L - Body ground
    		ECU power supply
    		Ignition switch ON
    		11 to 14 V
    HINT:
    *1: w/ Booster Failure Compensation
    *2: w/ Downhill Assist Control
    If the result is not as specified, there may be a malfunction on the wire harness side.

CHECK INSTRUMENT PANEL JUNCTION BLOCK (MAIN BODY ECU)

Toyota Rav4. Aca30, 33, 38 Gsa33 Zsa30, 35.Brake Control.Anti-Lock Brake System.Vehicle Stability Control System Terminals Of Ecu

  1. Disconnect the ID junction block connector.

  2. Measure the resistance of the wire harness side connector.

    Terminal No. (Symbol)
    		Wiring Color
    		Terminal Description
    		Condition
    		Specified Condition
    ID-4 (PKB) - Body ground
    		B - Body ground
    		Parking brake switch input
    		Parking brake switch on
    		Below 1 Ω
    Parking brake switch off
    		10 kΩ or higher
    If the result is not as specified, there may be a malfunction on the wire harness side.

  3. Reconnect the ID junction block connector.

  4. Measure the voltage of the wire harness side connector.

    Terminal No. (Symbol)
    		Wiring Color
    		Terminal Description
    		Condition
    		Specified Condition
    ID-4 (PKB) - Body ground
    		B - Body ground
    		Parking brake switch input
    		Ignition switch ON
    Parking brake switch on
    		Below 1 V
    Ignition switch ON
    Parking brake switch off
    		11 to 14 V
    If the result is not as specified, the junction block (main body ECU) may be a malfunction.