Toyota Corolla Cross Owners & Service Manuals

Toyota Corolla Cross: How To Proceed With Troubleshooting

Toyota Corolla Cross (2022-2024) Service Manual / Steering / Power Assist Systems / Power Steering System / How To Proceed With Troubleshooting

CAUTION / NOTICE / HINT

HINT:

  • Use the following procedure to troubleshoot the power steering system.
  • *: Use the GTS.

PROCEDURE

1.

VEHICLE BROUGHT TO WORKSHOP
NEXT

2.

INSPECT AUXILIARY BATTERY

(a) Turn the ignition switch off.

(b) Measure the voltage of the auxiliary battery.

Standard Voltage:

11 to 14 V

HINT:

If the voltage is below 11 V, recharge or replace the auxiliary battery before proceeding to the next step.

NEXT

3.

CHECK DTC AND FREEZE FRAME DATA*

(a) Check DTCs and freeze frame data.

NEXT

4.

PROBLEM SYMPTOM CONFIRMATION

Result

Proceed to

Symptom does not occur.

A

Symptom occurs.

B
B

GO TO STEP 6

A

5.

SYMPTOM SIMULATION
NEXT

6.

CHECK CAN COMMUNICATION SYSTEM*

(a) Check for DTCs.

  • for HEV Model:

    Click here

  • for Gasoline Model:

    Click here

Result

Proceed to

CAN communication system DTCs are not output.

A

CAN communication system DTCs are output.

B

HINT:

  • If any CAN communication system DTCs are output, perform troubleshooting for the CAN communication system first.
  • If communication to the power steering ECU assembly cannot be established through the GTS, inspect terminals CANH and CANL of the DLC3 and the power steering ECU assembly, and the IG circuit of the power steering ECU assembly.
B

PROCEED TO CAN COMMUNICATION SYSTEM

  • for HEV Model:

    Click here

  • for Gasoline Model:

    Click here

A

7.

CHECK FOR DTC*

(a) Check for DTCs.

Chassis > EMPS > Trouble Codes

HINT:

Refer to Diagnostic Trouble Code Chart when any DTCs are output.

Click here

Result

Proceed to

DTCs are not output.

A

DTCs are output.

B
B

GO TO STEP 10

A

8.

PROBLEM SYMPTOMS TABLE

(a) Refer to Problem Symptoms Table.

Click here

Result

Proceed to

Fault is not listed in Problem Symptoms Table.

A

Fault is listed in Problem Symptoms Table.

B
B

GO TO STEP 10

A

9.

OVERALL ANALYSIS AND TROUBLESHOOTING*

(a) Refer to Terminals of ECU.

Click here

(b) Refer to Data List / Active Test.

Click here

NEXT

10.

REPAIR OR REPLACE
NEXT

11.

CONFIRMATION TEST
NEXT

END

    READ NEXT:

     Calibration

    CALIBRATION POWER STEERING ECU INITIAL SETTING (ASSIST MAP WRITING) (USING GTS) NOTICE: If any of the following conditions are met, perform Power Steering ECU Initial Setting (assist map writing)

     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

     Terminals Of Ecu

    TERMINALS OF ECU CHECK POWER STEERING ECU ASSEMBLY *a Component without harness connected (Power Steering ECU Assembly) - - (a) Measure the

    SEE MORE:

     Installation

    INSTALLATION CAUTION / NOTICE / HINT COMPONENTS (INSTALLATION) Procedure Part Name Code 1 INSTALL ENGINE HANGER - - - 2 ENGINE ASSEMBLY FROM ENGINE STAND - - - 3 COMPRESSOR ASSEMBLY WITH PULLEY

     Generator Phase U Current Sensor Signal Bias Level Out of Range / Zero Adjustment Failure (P0E0028,P0E0428,P0E0828)

    DTC SUMMARY MALFUNCTION DESCRIPTION These DTCs indicate that the current sensor value is abnormal. The cause of this malfunction may be one of the following: Internal inverter malfunction Current sensor malfunction Inverter with converter assembly internal circuit malfunction DESCRI

    © 2020-2024 Copyright www.tcorollacross.com