Toyota Yaris: Vehicle Stability Control System / Terminals Of Ecu
TERMINALS OF ECU
TERMINALS OF ECU
| *a | Component without harness connected (Skid Control ECU [Brake Actuator Assembly]) | - | - |
| Terminal No. (Symbol) | Terminal Description |
|---|---|
| 1 (GND2) | Pump motor ground |
| 2 | - (Not used) |
| 3 | - (Not used) |
| 4 | - (Not used) |
| 5 (STP2) | Stop light switch assembly input |
| 6 | - (Not used) |
| 7 | - (Not used) |
| 8 | - (Not used) |
| 9 | - (Not used) |
| 10 (CANL) | CAN communication line L |
| 11 | - (Not used) |
| 12 (IGR) | ECU power supply input |
| 13 (BM) | Motor relay power supply |
| 14 (SP1) | Speed signal output for speedometer |
| 15 (RR-) | Rear wheel speed RH (-) signal input |
| 16 (RR+) | Rear wheel speed RH (+) power supply output |
| 17 (FL-) | Front wheel speed LH (-) signal input |
| 18 (FL+) | Front wheel speed LH (+) power supply output |
| 19 | - (Not used) |
| 20 | - (Not used) |
| 21 | - (Not used) |
| 22 (CANH) | CAN communication line H |
| 23 | - (Not used) |
| 24 | - (Not used) |
| 25 (GND1) | Skid control ECU (brake actuator assembly) ground |
| 26 (STPO) | Stop light switch assembly output |
| 27 | - (Not used) |
| 28 (RL-) | Rear wheel speed LH (-) signal input |
| 29 (RL+) | Rear wheel speed LH (+) power supply output |
| 30 (FR-) | Front wheel speed RH (-) signal input |
| 31 (FR+) | Front wheel speed RH (+) power supply output |
| 32 | - (Not used) |
| 33 (CSW) | VSC OFF switch (combination switch assembly) input |
| 34 | - (Not used) |
| 35 (STP) | Stop light switch assembly input |
| 36 (CA2H) | CAN communication line H |
| 37 (CA2L) | CAN communication line L |
| 38 (+BS) | Solenoid relay power supply |
TERMINAL INSPECTION
(a) Disconnect the A108 connector and measure the voltage or resistance on the wire harness side.
| *a | Front view of wire harness connector (to Skid Control ECU [Brake Actuator Assembly]) | - | - |
HINT:
Voltage cannot be measured with the connector connected to the skid control ECU (brake actuator assembly) as the connector is watertight.
| Terminal No. (Symbol) | Terminal Description | Condition | Specified Condition |
|---|---|---|---|
| A108-1 (GND2) - Body ground | Pump motor ground | Always | Below 1 Ω |
| A108-5 (STP2) - Body ground | Stop light switch assembly input | Brake pedal depressed → released | 8 to 14 V → Below 1.5 V |
| A108-12 (IGR) - Body ground | ECU power supply input | Ignition switch ON | 10.5 to 16 V |
| A108-13 (BM) - Body ground | Motor relay power supply | Always | 11 to 14 V |
| A108-14 (SP1) - Body ground | Speed signal output for speedometer | Ignition switch ON | 11 to 14 V |
| A108-25 (GND1) - Body ground | Skid control ECU (brake actuator assembly) ground | Always | Below 1 Ω |
| A108-26 (STPO) - Body ground | Stop light switch assembly output | Ignition switch ON | 11 to 14 V |
| A108-33 (CSW) - Body ground | VSC OFF switch (combination switch assembly) input | VSC OFF switch (combination switch assembly) pressed and held → released | Below 1 Ω → 10 kΩ or higher |
| A108-35 (STP) - Body ground | Stop light switch assembly input | Stop light switch assembly on → off (Brake pedal depressed → released) | 8 to 14 V → Below 1.5 V |
| A108-38 (+BS) - Body ground | Solenoid relay power supply | Always | 11 to 14 V |
Diagnosis System
DIAGNOSIS SYSTEM DESCRIPTION When troubleshooting a vehicle with the diagnosis system, the only difference from the usual troubleshooting procedure is connecting the GTS to the vehicle and reading various data output from the vehicle's skid control ECU (brake actuator assembly)...
Dtc Check / Clear
DTC CHECK / CLEAR DTC CHECK (a) Operate the GTS to read the DTCs. Chassis > Brake > Trouble Codes (b) Check the details of the DTCs. NOTICE:
Make sure to clear the DTCs after repair...
Other information:
Toyota Yaris XP210 (2020-2026) Reapir and Service Manual: Operation Check
OPERATION CHECK AUTOMATIC LIGHT CONTROL SYSTEM OPERATION CHECK NOTICE: Make sure that the customize settings are set to default when performing the automatic light control system operation check. Click here (a) Turn the ignition switch to ON. (b) Turn the light control switch to the AUTO position...
Toyota Yaris XP210 (2020-2026) Reapir and Service Manual: Front Passenger Side Door Entry Unlock Function does not Operate
DESCRIPTION If the entry unlock function does not operate for the front passenger door only, but the entry lock function operates, the request code is being transmitted properly from the front passenger door. In this case, there may be a problem related to the unlock sensor (connection between the certification ECU (smart key ECU assembly) and front door outside handle assembly RH)...
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Fuel-Filler Lid and Cap
WARNING
When removing the fuel-filler cap, loosen the cap slightly and wait for any hissing to stop, then remove it
Fuel spray is dangerous. Fuel can burn skin and eyes and cause illness if ingested. Fuel spray is released when there is pressure in the fuel tank and the fuel-filler cap is removed too quickly.
