OBDII Code List

C1253 SCION - Brake Booster Pump Motor Circuit

Repair Importance Level: 3/3
Repair Difficulty Level: 3/3   
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Possible causes

  • Faulty ABS Motor Relay 1
  • Faulty ABS Motor Relay 2
  • Faulty Brake Actuator Assembly
  • Brake Actuator Assembly harness is open or shorted
  • Brake Actuator Assembly circuit poor electrical connection

Possible symptoms

  • Anti-Lock Brake System (ABS) Warning Light ON
  • Engine Light ON (or Service Engine Soon Warning Light)

C1253 Scion Description

The Skid Control ECU detects decreases in the accumulator pressure according to the data from the accumulator pressure sensor, and then starts and stops the pump motor by operating the motor relay. The Skid Control ECU usually drives the motor relay 1 for ECB control, and the motor relay 2 for ABS control. If either is malfunctioning, the other substitutes.
OBDII Code C1253 Scion - Brake Booster Pump Motor Circuit -

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C1253 SCION Comments

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