How To Proceed With Troubleshooting [11/2023 - ]: Procedure

VEHICLE BROUGHT TO WORKSHOP
Result

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NEXT

Result:

NEXT

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 ignition switch was ON, whether the engine1 or hybrid vehicle control system2 has started.
How did it happen?	Problem symptoms

*1: for Gasoline Model
*2: for HV Model

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

Read and save vehicle control history (RoB) using the GTS.

Refer to VEHICLE CONTROL HISTORY (RoB) [11/2023 - ]

Body Electrical > Main Body > Utility

Tester Display
Vehicle Control History (RoB)

Result

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Result:

See step 4

INSPECT AUXILIARY BATTERY VOLTAGE

Measure the auxiliary battery voltage with the ignition switch off.
Standard Voltage

11 to 14 V

If the voltage is below 11 V, recharge or replace the auxiliary 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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NEXT

Result:

See step 5

CHECK COMMUNICATION FUNCTION OF CAN COMMUNICATION SYSTEM*

Using the GTS, check for CAN communication system DTCs.

for HV Model: Refer to DIAGNOSIS SYSTEM [11/2023 - ]

for Gasoline Model: Refer to DIAGNOSIS SYSTEM [11/2023 - ]

Result

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

Result:

GO TO CAN COMMUNICATION SYSTEM

for HV Model: Refer to HOW TO PROCEED WITH TROUBLESHOOTING [11/2023 - ]

for Gasoline Model: Refer to HOW TO PROCEED WITH TROUBLESHOOTING [11/2023 - ]

Result:

See step 6

CHECK COMMUNICATION FUNCTION OF LIN COMMUNICATION SYSTEM*

Using the GTS, check for LIN communication system DTCs.

Refer to HOW TO PROCEED WITH TROUBLESHOOTING [11/2023 - ]

Result

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

Result:

GO TO LIN COMMUNICATION SYSTEM. Refer to HOW TO PROCEED WITH TROUBLESHOOTING [11/2023 - ]

Result:

See step 7

CHECK FOR DTC (MULTIPLEX NETWORK MASTER SWITCH ASSEMBLY)*

Clear the DTCs.
Refer to DTC CHECK / CLEAR [12/2019 - ]

Body Electrical > Master Switch > Clear DTCs

Recheck for DTCs.

Body Electrical > Master Switch > Trouble Codes

Result

Result	Proceed to
DTC B2312 is not output	A
DTC B2312 is output	B

Result:

GO TO POWER WINDOW CONTROL SYSTEM. Refer to DTC B2312: Power Window Switch Malfunction [12/2019 - ]

Result:

See step 8

CHECK FOR DTC*

Check for DTCs.

Body Electrical > Main Body > Trouble Codes

Result

Result	Proceed to
DTC is not output	A
DTC B1243-00 is output	B

Result:

GO TO DIAGNOSTIC TROUBLE CODE CHART. Refer to DTC B1243-00: Impact Detection Sensor Circuit Malfunction [11/2023 - ]

Result:

See step 9

PROBLEM SYMPTOMS TABLE

Refer to Problem Symptoms Table.

Refer to PROBLEM SYMPTOMS TABLE [11/2023 - ]

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 VEHICLE CONTROL HISTORY (RoB). Refer to VEHICLE CONTROL HISTORY (RoB) [11/2023 - ]

Result:

See step 11

Result:

See step 10

OVERALL ANALYSIS AND TROUBLESHOOTING*

Terminals of ECU
Refer to TERMINALS OF ECU [11/2023 - ]
Data List / Active Test
Refer to DATA LIST / ACTIVE TEST [11/2023 - ]
Operation Check
Refer to OPERATION CHECK [11/2023 - ]

Inspection

Result

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Result:

See step 11

REPAIR OR REPLACE
Result

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Result:

NEXT

See step 12
CONFIRMATION TEST
Result

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Result:

NEXT

END