How To Proceed With Troubleshooting [10/2023 - ]: Procedure

VEHICLE BROUGHT TO WORKSHOP
Result

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Result:

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See step 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 has started
How did it happen?	Problem symptoms

Result

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Result:

See step 3

READ AND SAVE VEHICLE CONTROL HISTORY (RoB)*

NOTE:

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 has been read out and saved, the vehicle control history information could be lost.
The function "Read vehicle control history" uses the current system time setting inside the GTS and the time counter inside the controlling ECU to calculate the timings shown in the vehicle control history. For this reason, before reading out the vehicle control history, first make sure that the GTS system clock is accurately set to the current time.

Read and save vehicle control history using the GTS.

Refer to CHECK FOR INTERMITTENT PROBLEMS [10/2023 - ]

Body Electrical > Main Body > Utility

Tester Display
Vehicle Control History (RoB)

Result

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Result:

See step 4

INSPECT BATTERY VOLTAGE

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.
Check the fuses and relays.

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

Result

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Result:

See step 5

CHECK CAN COMMUNICATION SYSTEM*

Using the GTS, check for CAN communication system DTCs.

Refer to DIAGNOSIS SYSTEM [10/2023 - ]

Result

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

Result:

GO TO CAN COMMUNICATION SYSTEM. Refer to HOW TO PROCEED WITH TROUBLESHOOTING [10/2023 - ]

Result:

See step 6

CHECK LIN COMMUNICATION SYSTEM*

Using the GTS, check for LIN communication system DTCs.

Result

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

Result:

GO TO LIN COMMUNICATION SYSTEM. Refer to DIAGNOSTIC TROUBLE CODE CHART [10/2023 - ]

Result:

See step 7

CHECK FOR DTC*

Clear the DTCs.
Body Electrical > Main Body > Clear DTCs

Recheck for DTCs.

Body Electrical > Main Body > Trouble Codes

Result

Result	Proceed to
B1243-00 is not output	A
B1243-00 is output	B
B2312-00 is output	C

Result:

GO TO DIAGNOSTIC TROUBLE CODE CHART. Refer to DIAGNOSTIC TROUBLE CODE CHART [10/2023 - ]

Result:

GO TO POWER WINDOW CONTROL SYSTEM. Refer to DIAGNOSTIC TROUBLE CODE CHART [10/2023 - ]

Result:

See step 8

PROBLEM SYMPTOMS TABLE

Refer to Problem Symptoms Table.

Refer to PROBLEM SYMPTOMS TABLE [10/2023 - ]

Result

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

Result:

CHECK FOR INTERMITTENT PROBLEMS. Refer to CHECK FOR INTERMITTENT PROBLEMS [10/2023 - ]

Result:

ADJUST, REPAIR OR REPLACE IN ACCORDANCE WITH PROBLEM SYMPTOMS TABLE

Result:

See step 9

OVERALL ANALYSIS AND TROUBLESHOOTING*

Terminals of ECU
Refer to TERMINALS OF ECU [10/2023 - ]
Data List / Active Test
Refer to DATA LIST / ACTIVE TEST [10/2023 - ]
Operation Check
Refer to OPERATION CHECK [10/2023 - ]

Inspection

Result

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Result:

See step 10

REPAIR OR REPLACE
Result

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Result:

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See step 11
CONFIRMATION TEST
Result

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Result:

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END