Toyota Yaris: Vehicle Stability Control System / ABS Pump Motor Control Circuit Voltage Out of Range (C052C1C)

Toyota Yaris XP210 (2020-2024) Reapir and Service Manual / Brake / Brake Control / Dynamic Control Systems / 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:
  • When the +BS terminal voltage is from 9.5 to 17.4 V with the motor relay and motor fail safe relay OFF, short in ground circuit continues for 2 seconds or more.
  • When the motor relay OFF and the motor fail-safe relay ON, an open or short in motor circuit continues for 4 seconds or more.

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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    Categories

    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.

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