Toyota Camry (XV70): Terminals Of Ecu
TERMINALS OF ECU
TERMINALS OF ECU
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*a | Component without harness connected (Skid Control ECU (Brake Actuator Assembly)) |
- | - |
HINT:
- As a waterproof connector is used for the brake actuator assembly, voltage and waveform inspections cannot be performed with the connector connected.
- Use the Techstream to read data and perform Active Tests when inspecting the operation and communication status of the brake actuator assembly.
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Terminal No. (Symbol) | Terminal Description |
|---|---|
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1 (+BM) | ABS motor relay power supply |
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2 (SP1) | Speed signal output |
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3 (STPO) | Stop light control relay (stop light switch assembly) output |
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4 (FR-) | Front wheel speed RH (-) signal input |
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5 | - |
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6 | - |
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7 | - |
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8 (FL-) | Front wheel speed LH (-) signal input |
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9 (STP) | Stop light switch assembly signal input |
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10 | - |
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11 | - |
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12 | - |
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13 (GND2) | Pump motor ground |
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14 (CANL) | CAN communication line L |
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15 | - |
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16 (FR+) | Front wheel speed RH (+) power supply output |
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17 (RR+) | Rear wheel speed RH (+) power supply output |
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18 (RL-) | Rear wheel speed LH (-) signal input |
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19 (FL+) | Front wheel speed LH (+) power supply output |
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20 | - |
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21 | - |
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22 (CSW) | VSC OFF switch input |
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23 | - |
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24 (STP2) | Stop light signal input |
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25 (+BS) | ABS solenoid relay power supply |
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26 (CANH) | CAN communication line H |
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27 | - |
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28 (IG1) | IG1 power source input |
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29 (RR-) | Rear wheel speed RH (-) signal input |
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30 | - |
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31 (RL+) | Rear wheel speed LH (+) power supply output |
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32 | - |
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33 | - |
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34 | - |
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35 | - |
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36 | - |
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37 | - |
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38 (GND1) | Skid control ECU (brake actuator assembly) ground |
TERMINAL INSPECTION
(a) Disconnect the A33 skid control ECU (brake actuator assembly) connector and measure the voltage and resistance on the wire harness side.
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*a | Front view of wire harness connector (to Skid Control ECU (Brake Actuator Assembly)) |
- | - |
(b) Measure the voltage or resistance according to the value(s) in the table below.
Standard|
Terminal No. (Symbol) | Wiring Color |
Terminal Description | Condition |
Specified Condition |
|---|---|---|---|---|
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A33-1 (+BM) - Body ground |
B - Body ground | ABS motor relay power supply |
Always | 11 to 14 V |
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A33-3 (STPO) - Body ground |
L - Body ground | Stop light control relay (stop light switch assembly) output |
Always | 11 to 14 V |
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A33-9 (STP) - Body ground |
GR - Body ground | Stop light switch assembly signal input |
Stop light switch assembly on → off (Brake pedal depressed → released) |
11 to 14 V → 1.5 V or less |
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A33-13 (GND2) - Body ground |
W-B - Body ground | Pump motor ground |
1 minute or more after disconnecting the cable from the negative (-) battery terminal |
Below 1 Ω |
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A33-22 (CSW) - Body ground |
P - Body ground | VSC OFF switch input |
VSC OFF switch on → off (Pressed → not pressed) |
Below 1 Ω → 10 kΩ or higher |
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A33-24 (STP2) - Body ground |
R - Body ground | Stop light signal input |
Stop light switch assembly on → off (Brake pedal depressed → released) |
11 to 14 V → 1.5 V or less |
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A33-25 (+BS) - Body ground |
L - Body ground | ABS solenoid relay power supply |
Always | 11 to 14 V |
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A33-28 (IG1) - Body ground |
B - Body ground | IG1 power source input |
Ignition switch ON | 11 to 14 V |
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A33-38 (GND1) - Body ground |
W-B - Body ground | Skid control ECU (brake actuator assembly) ground |
1 minute or more after disconnecting the cable from the negative (-) battery terminal |
Below 1 Ω |
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Abbreviation Meaning
ABS Anti-Lock Brake System
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