Toyota Corolla Cross: How To Proceed With Troubleshooting

Toyota Corolla Cross (2022-2024) Service Manual / Vehicle Interior / Theft Deterrent / Keyless Entry / Theft Deterrent System / How To Proceed With Troubleshooting

CAUTION / NOTICE / HINT

HINT:

Use this procedure to troubleshoot the theft deterrent system.
*: Use the GTS.

PROCEDURE

1.	VEHICLE BROUGHT TO WORKSHOP

2.	CUSTOMER PROBLEM ANALYSIS CHECK

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, whether the problem occurred recently or has been occurring for a long time
Where	Whether the problem occurs at a specific location
Under what conditions?	Whether the doors were locked or unlocked, whether the engine switch was on (IG), whether the engine was running.
How did it happen?	Problem symptoms

3.	READ AND SAVE VEHICLE CONTROL HISTORY (ROB)

NOTICE:

If the vehicle or vehicle controls are operated (for example, during initial inspection when the vehicle is brought in for repair) before vehicle control history (RoB) has been read and saved, the vehicle control vehicle control history (RoB) information could be lost.
The vehicle control vehicle control history (RoB) function uses the current system time of the GTS and the time counter inside the controlling ECU to calculate the times shown in the vehicle control vehicle control history (RoB). For this reason, before reading the vehicle control vehicle control history (RoB), first make sure that the GTS system clock is accurately set to the current time.

(a) Read and save vehicle control history (RoB) using the GTS.

Body Electrical > Main Body > Utility

Tester Display
Vehicle Control History (RoB)

PRE-CHECK

(a) Measure the auxiliary battery voltage with the ignition switch off.

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.

(b) Check the fuses and relays.

(c) Check the connector connections and terminals to make sure that there are no abnormalities such as loose connections, deformation, etc.

5.	SYMPTOM SIMULATION

6.	INSPECT 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

GO TO CAN COMMUNICATION SYSTEM

for HEV Model:

Click here

for Gasoline Model:

Click here

7.	CHECK COMMUNICATION FUNCTION OF CXPI COMMUNICATION SYSTEM*

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

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

GO TO CXPI COMMUNICATION SYSTEM

8.	CHECK POWER DOOR LOCK CONTROL SYSTEM

(a) Check the power door lock control system.

Click here

OK:

Power door lock control system is normal

GO TO POWER DOOR LOCK CONTROL SYSTEM

9.	CHECK WIRELESS DOOR LOCK CONTROL SYSTEM

(a) Check the wireless door lock control system.

Click here

OK:

Wireless door lock control system is normal

GO TO WIRELESS DOOR LOCK CONTROL SYSTEM

10.	CHECK SMART KEY SYSTEM (for Entry Function)

(a) Check the smart key system (for Entry Function).

for HEV Model:

Click here

for Gasoline Model:

Click here

OK:

Smart key system (for Entry Function) is normal

GO TO SMART KEY SYSTEM (for Entry Function)

for HEV Model:

Click here

for Gasoline Model:

Click here

11.	CHECK SMART KEY SYSTEM (for Start Function)

(a) Check the smart key system (for Start Function).

for HEV Model:

Click here

for Gasoline Model:

Click here

OK:

Smart key system (for Start Function) is normal

GO TO SMART KEY SYSTEM (for Start Function)

for HEV Model:

Click here

for Gasoline Model:

Click here

12.	CHECK LIGHTING SYSTEM (EXT)

(a) Check the lighting system (EXT).

w/ AFS: Click here
w/o AFS: Click here

OK:

Lighting system (EXT) is normal

GO TO LIGHTING SYSTEM (EXT)

w/ AFS: Click here
w/o AFS: Click here

13.	CHECK LIGHTING SYSTEM (INT)

(a) Check the lighting system (INT).

Click here

OK:

Lighting system (INT) is normal

GO TO LIGHTING SYSTEM (INT)

14.	CHECK HORN SYSTEM

(a) Check the horn system.

OK:

Horn system is normal

GO TO HORN SYSTEM

15.	PROBLEM SYMPTOMS TABLE

(a) Refer to Problem Symptoms Table.

Click here

Result	Proceed to
Fault is not listed in Problem Symptoms Table (Fault can be simulated)	A
Fault is not listed in Problem Symptoms Table (Fault cannot be simulated)	B
Fault is listed in Problem Symptoms Table	C

CHECK FOR INTERMITTENT PROBLEMS

GO TO STEP 17

16.	PERFORM OVERALL ANALYSIS AND TROUBLESHOOTING*

(a) System Description

Click here

(b) Terminals of ECU

Click here

(d) Inspection

17.	REPAIR OR REPLACE

18.	CONFIRMATION TEST

END

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Hybrid Transaxle System

On-vehicle Inspection ON-VEHICLE INSPECTION CAUTION / NOTICE / HINT CAUTION: To prevent injury due to contact with an operating cooling fan, keep your hands and clothing away from the cooling fans when working in the engine compartment with the engine running or the ignition switch ON.

Toyota Corolla Cross: How To Proceed With Troubleshooting

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Check For Intermittent Problems

Customize Parameters

Problem Symptoms Table

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Flow Shutting Valve

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