Toyota Venza manuals

Toyota Venza: Motor Circuit Malfunction (C1521,C1531-C1534,C1554)

Toyota Venza Service Manual / Power Assist Systems / Power Steering System / Motor Circuit Malfunction (C1521,C1531-C1534,C1554)

DESCRIPTION

If the power steering ECU detects these DTCs, it will shut off the motor relay circuit (built into the power steering ECU) and stop power assist. However, power assist continues if DTC C1533 or C1534 is stored.

DTC No.

DTC Detection Condition

Trouble Area

C1521

Motor overcurrent

Power steering ECU

C1531

ECU internal malfunction (CPU malfunction)

Power steering ECU

C1532

ECU internal malfunction (Peripheral circuit malfunction)

Power steering ECU

C1533

ECU internal malfunction (Substrate temperature sensor malfunction)

Power steering ECU

C1534

ECU internal malfunction (EEPROM error)

Power steering ECU

C1554

Power source relay circuit malfunction

Power steering ECU

CAUTION / NOTICE / HINT

NOTICE:

If the power steering ECU has been replaced with a new one, perform the rotation angle sensor initialization and torque sensor zero point calibration (See page ).


PROCEDURE

1.

CHECK FOR DTC

(a) Clear the DTCs (See page ).


(b) Check for DTCs (See page ).


OK:

DTC is not output.


OK

CHECK INTERMITTENT PROBLEMS


NG

REPLACE POWER STEERING ECU

Torque Sensor Zero Point Adjustment Incomplete (C1516,C1526)
DESCRIPTION These DTCs do not indicate a malfunction. The power steering ECU stores these DTCs when it determines that the rotation angle sensor value initialization and torque sensor zero point ...

Torque Sensor Circuit Malfunction (C1511-C1514,C1517)
DESCRIPTION The torque sensor converts the rotation torque input to the steering wheel into an electrical signal and sends it to the power steering ECU. Based on this signal, the ECU detects stee ...

Other materials about Toyota Venza:

Luggage Compartment Room Light
Components COMPONENTS ILLUSTRATION Removal REMOVAL PROCEDURE 1. REMOVE NO. 2 ROOM LIGHT ASSEMBLY (a) Using a moulding remover, disengage the claw. (b) Disconnect the connector and remove t ...

Data List / Active Test
DATA LIST / ACTIVE TEST 1. DATA LIST HINT: Using the Techstream to read the Data List allows the values or states of switches, sensors, actuators and other items to be read without removing any parts. This non-intrusive inspection can be very useful bec ...

System Diagram
SYSTEM DIAGRAM Communication Table Sender Receiver Signal Line Main body ECU (Driver side junction block assembly) Sliding roof ECU (Sliding roof drive gear sub-assembly) Key ...

© 2016-2021 Copyright www.tovenza.com

0.2118