Toyota Corolla Cross Owners & Service Manuals

Toyota Corolla Cross: How To Proceed With Troubleshooting

Toyota Corolla Cross (2022-2024) Service Manual / Drivetrain / K120f (cvt) / Continuously Variable Transaxle System / How To Proceed With Troubleshooting

CAUTION / NOTICE / HINT

HINT:

  • Use the following procedure to troubleshoot the continuously variable transaxle system.
  • *: Use the GTS.

PROCEDURE

1.

VEHICLE BROUGHT TO WORKSHOP
NEXT

2.

CUSTOMER PROBLEM ANALYSIS

(a) Refer to How to Troubleshoot ECU Controlled Systems in Introduction.

Click here

NEXT

3.

INSPECT AUXILIARY BATTERY VOLTAGE

(a) Measure the auxiliary battery voltage.

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

4.

CHECK CAN COMMUNICATION SYSTEM*

(a) Using the GTS, check if the CAN communication system is functioning normally.

CAN Bus Check

OK:

CAN communication system is functioning normally.

HINT:

  • Refer to CAN Bus Check in CAN Communication System.

    Click here

  • The TCM is connected to the CAN communication system. Therefore, before starting troubleshooting, make sure to check that there are no malfunctions in the CAN communications system.
NG

GO TO CAN COMMUNICATION SYSTEM

OK

5.

CHECK AND CLEAR DTCS AND FREEZE FRAME DATA*

(a) Refer to DTC Check/Clear.

Click here

NEXT

6.

SELECT CHECK MODE DIAGNOSIS*

(a) Refer to Check Mode Procedure.

Click here

NEXT

7.

CHECK FOR DTC*

(a) Proceed to DTC Check/Clear.

Click here

Powertrain > Transmission > Trouble Codes

Result

Proceed to

DTCs are not output.

A

DTCs are output.

B
B

GO TO STEP 14

A

8.

BASIC INSPECTION

(a) Refer to Continuously Variable Transaxle Fluid.

Click here

(b) Refer to Park/Neutral Position Switch.

Click here

(c) Refer to Shift Lever.

Click here

NG

GO TO STEP 11

OK

9.

PROBLEM SYMPTOMS CONFIRMATION

(a) Refer to Road Test.

Click here

(b) Refer to Mechanical System Tests.

Click here

(c) Refer to Hydraulic Test.

Click here

Result

Proceed to

Symptom does not occur

A

Symptom occurs

B
B

GO TO STEP 11

A

10.

SYMPTOM SIMULATION

(a) Click here

NEXT

11.

COMPONENT INSPECTION
NEXT

12.

REPAIR OR REPLACE
NEXT

13.

CONFIRMATION TEST
NEXT

END

14.

DIAGNOSTIC TROUBLE CODE CHART

(a) Proceed to Diagnostic Trouble Code Chart.

NEXT

15.

CIRCUIT INSPECTION
NEXT

16.

IDENTIFICATION OF PROBLEM
NEXT

17.

REPAIR OR REPLACE
NEXT

18.

CONFIRMATION TEST
NEXT

END

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