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 |
Relay
On-vehicle Inspection
ON-VEHICLE INSPECTION
PROCEDURE
1. INSPECT IG2 RELAY
(a) Remove the IG2 relay from the relay block.
(b) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
Te ...
Installation
INSTALLATION
CAUTION / NOTICE / HINT
CAUTION:
The nuts must not be reused.
Make sure that the front seat frame assembly with adjuster is not deformed.
If it is, replace it with a new one.
PROCEDURE
1. INSTALL FRONT SEAT SIDE AIRBAG A ...
Inspection
INSPECTION
PROCEDURE
1. INSPECT SPIRAL CABLE
(a) Visually check for defects with the spiral cable removed from the vehicle.
(1) The defects are as follows:
Scratches on the spiral cable
Small cracks the spiral cable
Dents on the spiral cabl ...