Dtc C1524/24 Motor Terminal Voltage Malfunction

Steering. Toyota Rav4. Aca30, 33, 38 Gsa33 Zsa30, 35
Power Steering. Toyota Rav4. Aca30, 33, 38 Gsa33 Zsa30, 35

DESCRIPTION

WIRING DIAGRAM

INSPECTION PROCEDURE

READ VALUE USING INTELLIGENT TESTER (MOTOR VOLTAGE)

DTC C1524/24 Motor Terminal Voltage Malfunction

DTC C1555/25 Motor Relay Welding Failure


DESCRIPTION

The power steering ECU supplies the current to the power steering motor through the motor circuit.

DTC No.
DTC Detection Condition
Trouble Area
C1524/24
Short (or open) in motor circuit or abnormal voltage or current in motor circuit
  1. Power steering motor
  2. Power steering ECU
C1555/25
Motor relay circuit malfunction
  1. Power steering motor
  2. Power steering ECU

WIRING DIAGRAM


Toyota Rav4. Aca30, 33, 38 Gsa33 Zsa30, 35.Power Steering.Steering Gear. Dtc C1524/24 Motor Terminal Voltage Malfunction


INSPECTION PROCEDURE

1.READ VALUE USING INTELLIGENT TESTER (MOTOR VOLTAGE)

  1. Connect the intelligent tester to the DLC3.

  1. With the engine running, press the intelligent tester main switch ON.

  1. Select the items "Motor Terminal Volt (U)", "Motor Terminal Volt (V)", "Motor Terminal Volt (W)" in the Data List and read the value displayed on the intelligent tester.

    Power steering ECU
    Tester Display
    		Measurement Item/Range
    		Normal Condition
    		Reference Value
    Motor Terminal Volt (U)
    		Motor terminal voltage (U phase):
    Min.: 0 V
    Max.: 98 V
    		Engine running and steering wheel turned
    		When the steering wheel is turned, a voltage between 1 V and approximately 1 V less than the battery voltage is displayed.
    Motor Terminal Volt (V)
    		Motor terminal voltage (V phase):
    Min.: 0 V
    Max.: 98 V
    		Engine running and steering wheel turned
    		When the steering wheel is turned, a voltage between 1 V and approximately 1 V less than the battery voltage is displayed.
    Motor Terminal Volt (W)
    		Motor terminal voltage (W phase):
    Min.: 0 V
    Max.: 98 V
    		Engine running and steering wheel turned
    		When the steering wheel is turned, a voltage between 1 V and approximately 1 V less than the battery voltage is displayed.

    Result
    Result
    		Proceed to
    When the steering wheel is turned, a voltage between 1 V and approximately 1 V less than the battery voltage is displayed.
    		A
    When the steering wheel is turned, a value other than the above is displayed.
    		B


B
REPLACE POWER STEERING MOTOR
A

REPLACE POWER STEERING ECU