Use the following procedure to troubleshoot the parking assist monitor system.
*: Use the GTS.
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Ask the customer about the problems and the conditions at the time the malfunction occurred to make sure the problem symptom was not temporarily caused by radio waves in the surrounding environment.
The parking assist monitor display may be temporarily distorted due to radio waves around the vehicle.
| Problem Symptom | Cause |
|---|---|
| The problem symptom indicates a parking assist monitor display malfunction and the problem symptom cannot be reproduced. | The display may be temporarily distorted when the vehicle is close to an object that transmits radio waves, such as a telecommunication tower, an airport or a truck equipped with a transceiver. |
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Measure the auxiliary battery voltage with the ignition switch off.
11 to 14 V
If the voltage is below 11 V, replace or recharge the auxiliary battery before proceeding to the next step.
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Choose the model to be inspected.
| Result | Proceed to |
|---|---|
| for TFTM Made | A |
| for GTMC Made | B |
A
B
| Result | Proceed to |
|---|---|
| Navigation system is normal | A |
| Navigation system is abnormal | B |
A
B
Use the GTS to check if the CAN communication system is functioning normally.
| Result | Proceed to |
|---|---|
| CAN communication system DTCs are not output | A |
| CAN communication system DTCs are output | B |
A
B
Check for DTCs and make a note of any codes that are output.
Clear the DTCs.
Recheck for DTCs. Try to reproduce the problem symptoms based on the recorded DTCs, and then check if the DTCs are output again.
| Result | Proceed to |
|---|---|
| No DTCs are output | A |
| DTCs are output | B |
A
B
Refer to Vehicle Control History (RoB).
Check for vehicle control history and note any codes that are output.
| Tester Display |
|---|
| Vehicle Control History (RoB) |
| Result | Proceed to |
|---|---|
| No vehicle control history is output | A |
| Vehicle control history is output | B |
A
B
Refer to Problem Symptoms Table.
| Result | Proceed to |
|---|---|
| Fault is not listed in Problem Symptoms Table | A |
| Fault is listed in Problem Symptoms Table | B |
A
B
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| Result | Proceed to |
|---|---|
| Audio and Visual system is normal | A |
| Audio and Visual system is abnormal | B |
A
B
Use the GTS to check if the CAN communication system is functioning normally.
| Result | Proceed to |
|---|---|
| CAN communication system DTCs are not output | A |
| CAN communication system DTCs are output | B |
A
B
Check for DTCs and make a note of any codes that are output.
Clear the DTCs.
Recheck for DTCs. Try to reproduce the problem symptoms based on the recorded DTCs, and then check if the DTCs are output again.
| Result | Proceed to |
|---|---|
| No DTCs are output | A |
| DTCs are output | B |
A
B
Refer to Vehicle Control History (RoB).
Check for vehicle control history and note any codes that are output.
| Tester Display |
|---|
| Vehicle Control History (RoB) |
| Result | Proceed to |
|---|---|
| No vehicle control history is output | A |
| Vehicle control history is output | B |
A
B
Refer to Problem Symptoms Table.
| Result | Proceed to |
|---|---|
| Fault is not listed in Problem Symptoms Table | A |
| Fault is listed in Problem Symptoms Table | B |
A
B
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