Toyota CH-R Service Manual: How To Proceed With Troubleshooting

Toyota CH-R Service Manual / Cellular Communication / Safety Connect System / How To Proceed With Troubleshooting

CAUTION / NOTICE / HINT

HINT:

Use the following procedure to troubleshoot the safety connect system.
*: Use the Techstream.

PROCEDURE

1.	VEHICLE BROUGHT TO WORKSHOP

2.	CUSTOMER PROBLEM ANALYSIS CHECK AND SYMPTOM 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 analysis:

What	Vehicle model, system name
When	Date, time, occurrence frequency
Where	Road conditions
Under what conditions?	Driving conditions, weather conditions
How did it happen?	Problem symptoms

PRE-CHECK

(a) Measure the battery voltage.

Standard Voltage:

11 to 14 V

If the voltage is below 11 V, recharge or replace the 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.

4.	VERIFY CUSTOMER SUBSCRIPTION IS ACTIVE*

(a) Enter the VIN into Vehicle Inquiry on the Techstream and verify the subscription type and expiration date.

5.	PERFORM HEALTH CHECK*

(a) Perform "Health Check" and check for current DTCs.

Click here

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

GO TO DIAGNOSTIC TROUBLE CODE CHART

6.	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

HINT:

If the symptom does not reoccur and no DTC is output, attempt to reproduce the symptoms.

Click here

GO TO STEP 8

7.	OVERALL ANALYSIS AND TROUBLESHOOTING*

(a) Terminals of ECU

Click here

(b) Data List / Active Test

Click here

8.	REPAIR OR REPLACE

(a) Check if the DCM (Telematics Transceiver) has been replaced.

Result	Proceed to
The DCM (Telematics Transceiver) has been replaced	A
The DCM (Telematics Transceiver) has not been replaced	B

GO TO STEP 10

9.	PERFORM DCM ACTIVATION

(a) Perform "DCM ACTIVATION".

Click here

10.	CONFIRMATION TEST

END

System Description

SYSTEM DESCRIPTION DESCRIPTION (a) Safety Connect performs ACN (Automatic Collision Notification), manual emergency calling, stolen vehicle tracking and roadside assistance service by, audio and d ...

Dcm Operation History

DCM OPERATION HISTORY DCM OPERATION HISTORY This function shows the telematics network status when the DCM (Telematics Transceiver) was operated. Use this when no DTC is present but this telematic ...

Other materials:

Toyota CH-R Service Manual > Audio And Visual System(for Radio And Display Type): Voice is not Recognized
PROCEDURE 1. CHECK CONDITION (a) While paying attention to the condition of the spoken voice command, perform a voice recognition operation. OK: Voice command is recognized normally. HINT: When the voice command is recognized, the content of the voice ...

Toyota CH-R Service Manual > Airbag System: System Diagram
SYSTEM DIAGRAM Communication Table Transmitting ECU (Transmitter) Receiving ECU Signal Communication Method Airbag Sensor Assembly ECM Crash detection signal CAN ...

Toyota CH-R Service Manual: How To Proceed With Troubleshooting

System Description

Dcm Operation History

Other materials:

Toyota C-HR (AX20) 2023-2025 Owner's Manual

Toyota CH-R Owners Manual

Toyota CH-R Service Manual