Toyota Corolla Cross: How To Proceed With Troubleshooting

CAUTION / NOTICE / HINT

HINT:

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

PROCEDURE

1.	VEHICLE BROUGHT TO WORKSHOP

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2.	CUSTOMER PROBLEM ANALYSIS

HINT:

• In troubleshooting, confirm that the problem symptoms have been accurately identified. Preconceptions should be discarded in order to make an accurate judgment. To clearly understand what the problem symptoms are, it is extremely important to ask the customer about the problem and the conditions at the time the malfunction occurred.
• Gather as much information as possible for reference. Past problems that seem unrelated may also help in some cases.
• The following 5 items are important points for problem analysis:

  What	Vehicle model, system name
  When	Date, time, occurrence frequency
  Where	Whether the problem occurs at a specific location
  Under what conditions?	Whether the doors were locked or unlocked, whether the ignition switch was on, whether the engine was running
  How did it happen?	Problem symptoms

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3.	INSPECT AUXILIARY BATTERY VOLTAGE

(a) Measure the auxiliary battery voltage.

Standard Voltage:

11 to 14 V

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

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4.	CRANK ENGINE FOR MORE THAN 10 SECONDS

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5.	CHECK COMMUNICATION FUNCTION OF CAN COMMUNICATION SYSTEM*

(a) Using the GTS, check for CAN communication system DTCs.

Click here

Result	Proceed to
CAN DTCs are not output	A
CAN DTCs are output	B

B

GO TO CAN COMMUNICATION SYSTEM

A

6.	CHECK FOR DTC* (ECM)

(a) Check for DTCs and note any codes that are output.

HINT:

Before checking for DTCs, perform the "DTC Output Confirmation Operation" of each diagnostic procedure.

Powertrain > Engine > Trouble Codes

Result	Proceed to
DTCs are not output	A
SFI system DTCs are output	B
Immobiliser system DTCs are output	C

B

GO TO DIAGNOSTIC TROUBLE CODE CHART

C

GO TO DIAGNOSTIC TROUBLE CODE CHART

A

7.	CHECK FOR DTC* (TRANSPONDER KEY ECU ASSEMBLY)

(a) Check for DTCs and note any codes that are output.

Body Electrical > Immobiliser > Trouble Codes

HINT:

Before checking for DTCs, perform the "DTC Output Confirmation Operation" of each diagnostic procedure.

Result	Proceed to
DTCs are not output	A
Immobiliser system DTCs are output	B

B

GO TO DIAGNOSTIC TROUBLE CODE CHART

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) Data List / Active Test

Click here

(b) Terminals of ECU

Click here

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10.	REPAIR OR REPLACE

HINT:

If the transponder key ECU assembly, ECM, or door control transmitter assembly are replaced, refer to Registration.

Click here

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11.	CHECK FOR DTC*

(a) Clear the DTCs.

Body Electrical > Immobiliser > Clear DTCs Powertrain > Engine > Clear DTCs

(b) Check for DTCs.

Body Electrical > Immobiliser > Trouble Codes Powertrain > Engine > Trouble Codes

HINT:

Before checking for DTCs, perform the "DTC Output Confirmation Operation" of each diagnostic procedure.

Result	Proceed to
DTCs are not output	A
Immobiliser system DTCs are output	B

A

END

B

GO TO DIAGNOSTIC TROUBLE CODE CHART

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