Toyota Venza: 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
.gif)
).
PROCEDURE
|
1. |
CHECK FOR DTC |
(a) Clear the DTCs (See page ).
(b) Check for DTCs (See page ).
OK:
DTC is not output.
| OK | .gif) |
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 ...
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Dtc Check / Clear
DTC CHECK / CLEAR
1. CHECK FOR CERTIFICATION ECU (SMART KEY ECU ASSEMBLY) DTC
(a) Connect the Techstream to the DLC3.
(b) Turn the engine switch on (IG).
(c) Turn the Techstream on.
(d) Enter the following menus: Body Electrical / Smart Key / Trouble Code ...
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DESCRIPTION
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in the navigation receiver a ...
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