Use the following procedure to troubleshoot the telematics system.
*: Use the GTS.
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The telematics system provides a variety of functions. Therefore, it is important to identify whether a malfunction is related to the communication system, including radio wave conditions, or any other systems. Carefully check the conditions that caused the malfunction in order to determine if a temporary problem with the radio wave signal conditions caused the malfunction.
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Measure the battery voltage.
11 to 14 V
If the voltage is below 11 V, recharge or replace the battery before proceeding to the next step.
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Use the GTS to check if the CAN communication system is functioning normally.
except NR Series: Click herePower Source / Network>NETWORKING>CAN COMMUNICATION SYSTEM (for Gasoline Model (except NR Series))>DIAGNOSIS SYSTEM202304,999999,_57,_080743,_0598531,RM100000002BFVC,
| Result | Proceed to |
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| CAN communication system DTCs are not output. | A |
| CAN communication system DTCs are output. | B |
A
B
except NR Series: Click herePower Source / Network>NETWORKING>CAN COMMUNICATION SYSTEM (for Gasoline Model (except NR Series))>HOW TO PROCEED WITH TROUBLESHOOTING202304,999999,_57,_080743,_0598531,RM100000002BFV9,
for NR Series: Click herePower Source / Network>NETWORKING>CAN COMMUNICATION SYSTEM (for Gasoline Model (NR Series))>HOW TO PROCEED WITH TROUBLESHOOTING202304,999999,_57,_080743,_0598517,RM100000002B6UW,
Check for DTCs.
| Result | Proceed to |
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| DTCs are not output. | A |
| DTCs are output. | B |
A
B
Check for vehicle control history and note any codes that are output.
| Tester Display |
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| Vehicle Control History (RoB) |
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| No vehicle control history is output | A |
| Any vehicle control history is output | B |
A
B
Refer to Problem Symptoms Table.
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| Fault is listed in Problem Symptoms Table. | A |
| Fault is not listed in Problem Symptoms Table. | B |
If the symptom does not recur and no DTCs are output, perform the simulation method.
A
B
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Adjust, repair or replace as necessary.
Depending on the parts that are replaced during vehicle inspection or maintenance, performing initialization, registration or calibration may be needed. Refer to Precaution for TOYOTA Connect.
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After clearing DTCs, recheck for DTCs.
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