Toyota Venza manuals

Toyota Venza: Motor Rotation Angle Sensor Malfunction (C1528)

Toyota Venza Service Manual / Power Assist Systems / Power Steering System / Motor Rotation Angle Sensor Malfunction (C1528)

DESCRIPTION

The motor rotation angle sensor detects the motor rotation angle and sends this information to the power steering ECU.

DTC No.

DTC Detection Condition

Trouble Area

C1528

Motor rotation angle sensor malfunction

  • Motor rotation angle sensor (built into steering column assembly)
  • Power steering ECU

WIRING DIAGRAM


CAUTION / NOTICE / HINT

NOTICE:

If the power steering ECU and steering column assembly have been replaced, perform the rotation angle sensor initialization and torque sensor zero point calibration (See page ).


PROCEDURE

1.

CHECK CONNECTOR CONNECTION CONDITION

(a) Check the installation condition of the motor rotation angle sensor connector.

OK:

Motor rotation angle sensor connector is securely connected to the power steering ECU.


NG

CONNECT CONNECTOR


OK

2.

READ VALUE USING TECHSTREAM (MOTOR ROTATION ANGLE SENSOR)

(a) Turn the ignition switch off.

(b) Connect the Techstream to the DLC3.

(c) Turn the ignition switch to ON.

(d) Turn the Techstream on.

(e) Enter the following menus: Chassis / EMPS / Data List.

(f) Select the item "Motor Rotation Angle" in the Data List and read the value displayed on the Techstream.

EMPS

Tester Display

Measurement Item/Range

Normal Condition

Diagnostic Note

Motor Rotation Angle

Motor rotation angle/

Min.: 0 deg

Max.: 360 deg

During steering operation, motor rotation angle value changes from 0 to 360°

The engine is running and steering wheel is being turned.

OK:

During steering operation, motor rotation angle value changes from 0 to 360°.


OK

REPLACE POWER STEERING ECU


NG

3.

CHECK STEERING COLUMN ASSEMBLY

(a) Disconnect the connector from the motor rotation angle sensor.


(b) Measure the resistance according to the value(s) in the table below.

Standard Resistance:

Tester Connection

Condition

Specified Condition

z9-6 (RZSN) - z9-3 (RZG)

Always

75.2 to 112.8 Ω

z9-1 (RZV) - z9-3 (RZG)

Always

27.6 to 41.4 Ω

z9-5 (RZCS) - z9-3 (RZG)

Always

73.2 to 110.8 Ω

Text in Illustration

*1

Front view of wire harness connector

(to Motor Rotation Angle Sensor)


OK

REPLACE POWER STEERING ECU


NG

REPLACE STEERING COLUMN ASSEMBLY

IG Power Supply Voltage Malfunction (C1551)
DESCRIPTION The power steering ECU distinguishes the ignition switch status as ON or off through the IG power source circuit. DTC No. DTC Detection Condition Troub ...

Vehicle Speed Signal Malfunction (C1541)
DESCRIPTION The power steering ECU receives vehicle speed signals from the brake actuator assembly (skid control ECU) via CAN communication. The ECU provides appropriate assisting force in accord ...

Other materials about Toyota Venza:

Removal
REMOVAL CAUTION / NOTICE / HINT CAUTION: Some of these service operations affect the SRS airbag system. Read the precautionary notices concerning the SRS airbag system before servicing (See page ). NOTICE: Be sure to read "Precaution" thorou ...

Terminals Of Ecu
TERMINALS OF ECU 1. COMBINATION METER ASSEMBLY (a) Measure the voltage and resistance according to the value(s) in the table below. Terminal No. (Symbol) Wiring Color Terminal Description Condition ...

Problem Symptoms Table
PROBLEM SYMPTOMS TABLE HINT: Use the table below to help determine the cause of problem symptoms. If multiple suspected areas are listed, the potential causes of the symptoms are listed in order of probability in the "Suspected Area" column of ...

© 2016-2019 Copyright www.tovenza.com

0.2207