Toyota Corolla Cross: Power Steering Torque Sensor "A" Signal Compare Failure (C151162,C151187,C151262,C151287)
DESCRIPTION
The power steering ECU assembly supplies a voltage of 5 V to the torque sensor (electric power steering column sub-assembly) and monitors the voltage value of the Hall IC inside the torque sensor (electric power steering column sub-assembly) which changes in response to changes in the magnetic flux density (steering torque) detected by the Hall IC, and calculates the assist torque.
While DTC C151162, C151187, C151262 or C151287 is detected, power assist is stopped or assist amount is limited due to fail-safe operation.
|
DTC No. |
Detection Item |
DTC Detection Condition |
Trouble Area |
Warning Indicate |
|---|---|---|---|---|
|
C151162 |
Power Steering Torque Sensor "A" Signal Compare Failure |
Diagnosis Condition: IG ON Malfunction Status: The difference between 1A and 1B of the TRQ1 output signal is more than a certain value. |
|
EPS warning light: Comes on |
|
C151187 |
Power Steering Torque Sensor "A" Missing Message |
Diagnosis Condition: IG ON Malfunction Status: When the auxiliary battery voltage is 9.0 V or more, the TRQ1 signal is not detected, breaks communication protocol, has a CRC error, or has an invalid rolling counter. |
|
EPS warning light: Comes on |
|
C151262 |
Power Steering Torque Sensor "B" Signal Compare Failure |
Diagnosis Condition: IG ON Malfunction Status: The difference between 2A and 2B of the TRQ2 output signal is more than a certain value. |
|
EPS warning light: Comes on |
|
C151287 |
Power Steering Torque Sensor "B" Missing Message |
Diagnosis Condition: IG ON Malfunction Status: When the auxiliary battery voltage is 9.0 V or more, the TRQ2 signal is not detected, breaks communication protocol, has a CRC error, or has an invalid rolling counter. |
|
EPS warning light: Comes on |
CAUTION / NOTICE / HINT
NOTICE:
- When the electric power steering column sub-assembly has been replaced,
perform Power Steering ECU Initial Setting (assist map writing).
Click here
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- When the power steering ECU assembly has been replaced, perform Power Steering
ECU Initial Setting (assist map writing).
Click here
PROCEDURE
|
1. |
REPLACE POWER STEERING ECU ASSEMBLY AND ELECTRIC POWER STEERING COLUMN SUB-ASSEMBLY |
(a) Replace the power steering ECU assembly.
HINT:
Click here
(b) Replace the electric power steering column sub-assembly.
HINT:
Click here
| NEXT | .gif) |
END |
READ NEXT:
Power Steering Torque Sensor "A" Supply Voltage Circuit Voltage Above Threshold
(C151A17)
DESCRIPTION
The power steering ECU assembly supplies a voltage of 5 V to the torque sensor
(electric power steering column sub-assembly) and monitors the voltage value of
the Hall IC inside the t
Power Steering Torque Sensor "B" Supply Voltage Circuit Voltage Above Threshold
(C151B17)
DESCRIPTION
The power steering ECU assembly supplies a voltage of 5 V to the torque sensor
(electric power steering column sub-assembly) and monitors the voltage value of
the Hall IC inside the t
Power Steering Motor "A" Supply Voltage Circuit Voltage Below Threshold (C155A16,C155A17,C155B16,C155B17)
DESCRIPTION
If a problem occurs in the system, the power source relay circuit and the motor
relay circuit are shut off to stop power assist. The ECU must be replaced when there
is a problem with
SEE MORE:
On-vehicle Inspection
ON-VEHICLE INSPECTION PROCEDURE
1. INSPECT WINDSHIELD WIPER MOTOR ASSEMBLY (a) for LH Side: (1) Operate the windshield wiper motor assembly.
(2) Stop the windshield wiper motor assembly operation.
(3) Check the automatic stop (park) position. HINT: After the windshield wiper motor assembly is
Output Speed Sensor Circuit Short to Battery (P072012,P072014,P072031)
DESCRIPTION
The transmission revolution sensor (NOUT) detects the output shaft speed and
sends it to the TCM.
The TCM determines if belt mode has been entered by comparing the transmission
revolution sensor (NOUT) and (NSS) signals.
DTC No.
Detection Item
DTC
