Toyota Yaris: Vehicle Stability Control System / ABS Pump Motor Control Circuit Voltage Out of Range (C052C1C)
DESCRIPTION
| DTC No. | Detection Item | DTC Detection Condition | Trouble Area | DTC Output from |
|---|---|---|---|---|
| C052C1C | ABS Pump Motor Control Circuit Voltage Out of Range | Any of the following is detected:
| Skid control ECU (brake actuator assembly) | Brake |
WIRING DIAGRAM
Refer to DTC C052C13.
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CAUTION / NOTICE / HINT
NOTICE:
After replacing the skid control ECU (brake actuator assembly), perform "Calibration".
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PROCEDURE
| 1. | CHECK HARNESS AND CONNECTOR (GND2 TERMINAL) |
(a) Make sure that there is no looseness at the locking part and the connecting part of the connectors.
OK:
The connector is securely connected.
(b) Disconnect the A108 skid control ECU (brake actuator assembly) connector.
(c) Check both the connector case and the terminals for deformation and corrosion.
OK:
No deformation or corrosion.
(d) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
| Tester Connection | Condition | Specified Condition |
|---|---|---|
| A108-1 (GND2) - Body ground | 1 minute or more after disconnecting the cable from the negative (-) auxiliary battery terminal | Below 1 Ω |
| OK |
 | REPLACE BRAKE ACTUATOR ASSEMBLY |
| NG |
 | REPAIR OR REPLACE HARNESS OR CONNECTOR |
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DESCRIPTION The motor relay and motor fail safe relay are built into the brake actuator assembly. When the skid control ECU (brake actuator assembly) operate ABS, TRC, VSC or brake assist, the motor relay turns ON and drives the motor pump built into the brake actuator assembly...
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Break-In Period
No special break-in is necessary, but a few precautions in the first 600 miles (1,000 km) may add to the performance, economy, and life of the vehicle.
Do not race the engine. Do not maintain one constant speed, either slow or fast, for a long period of time. Do not drive constantly at full-throttle or high engine rpm for extended periods of time. Avoid unnecessary hard stops. Avoid full-throttle starts.