Toyota Corolla Cross: Problem Symptoms Table

Toyota Corolla Cross (2022-2024) Service Manual / Audio & Visual & Telematics / Telematics / Telematics System / 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 order of probability in the "Suspected Area" column of the table. Check each symptom by checking the suspected areas in the order they are listed. Replace parts as necessary.
Inspect the fuses and relays related to this system before inspecting the suspected areas below.
When a symptom indicates that a service is malfunctioning, use the GTS to check whether the service subscription is active.
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Application Function

Symptom	Suspected Area	Link
Vehicle status cannot be checked using the application.	Proceed to "Remote Service Malfunction"
Vehicle status alerts are not received by the application even if remote notification operation conditions are met.	Proceed to "Remote Service Malfunction"
Vehicle cannot be operated remotely using the application.	Perform remote door lock and unlock registration and check if the problem symptom recurs (for HEV Mode)
	Perform remote door lock and unlock registration and check if the problem symptom recurs (for Gasoline Mode)
	Proceed to "Remote Service Malfunction"

Remote Engine Start and Stop Function

Symptom	Suspected Area	Link
Engine does not start by remote engine start function.	Proceed to "Remote Engine Starter does not Operate"
Engine does not stop by remote engine stop function.	Proceed to "Remote Engine Starter does not Operate"

Warning Notification Function

Symptom	Suspected Area	Link
The multi-display screen does not show a warning message even though a warning light turns on or the multi-information display indicates a warning.	Proceed to "Warning Notification Function Malfunction"
The multi-display screen shows a warning message even though no warning lights are on and the multi-information display does not indicate a warning.	Proceed to "Warning Notification Function Malfunction"
The multi-display screen shows a warning message different from the warning light or the multi-information display.	Proceed to "Warning Notification Function Malfunction"

Destination Function

Symptom	Suspected Area	Link
Cannot contact call center when Call Destination Assist is selected on Destination Assist Connect screen	Contact Telematics Service Provider to inquire about network status	-
	Proceed to "UNABLE TO CONNECT TO CALL CENTER"
	Proceed to "DCM Data Signal Circuit between Radio Receiver and DCM"
	Radio and display receiver assembly
	DCM (telematics transceiver)
Other caller's voice volume cannot be adjusted using the Destination Assist Connect screen	Radio and display receiver assembly

Communication Based Voice Recognition Function

Symptom	Suspected Area	Link
Does not recognize voice commands performed to contact support center	Check if the connected service is available	-
	Check if the normal voice recognition function is operating correctly
	Proceed to "Does not Recognize Voice Commands Performed to Contact Support Center"
Vehicle apparatus sound operation does not function	Check if the connected service is available	-
	Confirm Table ID with VUI information screen
	Confirm Table Sub ID with VUI information screen
	Confirm voice recognition function is carried out normally
	Center inquiry	-
The microphone button on the keyboard input screen does not become enabled	Check if the connected service is available	-
	Proceed to "UNABLE TO CONNECT TO CALL CENTER"

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Transponder Chip Malfunction (B2793,B2797)

DESCRIPTION DTC B2793 is stored when a malfunction is found in the door control transmitter assembly during key ID code registration or a key ID code is not registered normally. Replace the door control transmitter assembly if key ID code registration cannot be performed normally and this DTC i

Toyota Corolla Cross: Problem Symptoms Table

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Transponder Chip Malfunction (B2793,B2797)