Last Modified: 08-21-2023 6.11:8.1.0 Doc ID: RM100000001BQOH
Model Year Start: 2019 Model: Avalon HV Prod Date Range: [04/2018 -           ]
Title: DOOR LOCK: POWER DOOR LOCK CONTROL SYSTEM(for HV Model): HOW TO PROCEED WITH TROUBLESHOOTING; 2019 - 2022 MY Avalon HV [04/2018 -        ]

HOW TO PROCEED WITH TROUBLESHOOTING

CAUTION / NOTICE / HINT

HINT:

  • Use the following procedure to troubleshoot the power door lock control system.
  • *: Use the Techstream.

PROCEDURE

1.

VEHICLE BROUGHT TO WORKSHOP
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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 power switch was on (IG), whether the hybrid control system has started.

How did it happen?

Problem symptoms
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3.

READ AND SAVE OPERATION HISTORY

NOTICE:

  • If the vehicle or vehicle controls are operated (for example, during initial inspection when the vehicle is brought in for repair) before operation history has been read and saved, the operation history information could be lost.
  • The operation history function uses the current system time of the Techstream and the time counter inside the controlling ECU to calculate the times shown in the operation history. For this reason, before reading the operation history, first make sure that the Techstream system clock is accurately set to the current time.

(a) Read and save operation history using the Techstream.

Click here 2019 - 2022 MY Avalon HV [04/2018 -        ]; DOOR LOCK: POWER DOOR LOCK CONTROL SYSTEM(for HV Model): CHECK FOR INTERMITTENT PROBLEMS

Body Electrical > Main Body > Utility

Tester Display

Operation History
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4.

PRE-CHECK

(a) Measure the auxiliary battery voltage with the power 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.

(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.

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5.

CHECK COMMUNICATION FUNCTION OF CAN COMMUNICATION SYSTEM*

(a) Using the Techstream, check for CAN communication system DTCs.

Click here 2019 - 2020 MY Avalon HV [04/2018 - 08/2020]; NETWORKING: CAN COMMUNICATION SYSTEM (for HV Model): DIAGNOSIS SYSTEM 2021 MY Avalon HV [08/2020 - 08/2021]; NETWORKING: CAN COMMUNICATION SYSTEM (for HV Model): DIAGNOSIS SYSTEM 2022 MY Avalon HV [08/2021 -        ]; NETWORKING: CAN COMMUNICATION SYSTEM (for HV Model): DIAGNOSIS SYSTEM

Result

Proceed to

CAN DTCs are not output

A

CAN DTCs are output

B
B

GO TO CAN COMMUNICATION SYSTEM

A

6.

CHECK COMMUNICATION FUNCTION OF LIN COMMUNICATION SYSTEM*

(a) Using the Techstream, check for LIN communication system DTCs.

Click here 2019 - 2022 MY Avalon HV [04/2018 -        ]; NETWORKING: LIN COMMUNICATION SYSTEM (for HV Model): DTC CHECK / CLEAR

Result

Proceed to

LIN DTCs are not output

A

LIN DTCs are output

B
B

GO TO LIN COMMUNICATION SYSTEM

A

7.

CHECK FOR DTC (MULTIPLEX NETWORK MASTER SWITCH ASSEMBLY)*

(a) Clear the DTCs.

Click here 2019 - 2022 MY Avalon HV [04/2018 -        ]; WINDOW / GLASS: POWER WINDOW CONTROL SYSTEM (for HV Model): DTC CHECK / CLEAR

Body Electrical > Master Switch > Clear DTCs

(b) Recheck for DTCs.

Body Electrical > Master Switch > Trouble Codes

Result

Proceed to

DTC B2312 is not output

A

DTC B2312 is output

B
B

GO TO POWER WINDOW CONTROL SYSTEM

A

8.

CHECK FOR DTC (MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU))*

(a) Clear the DTCs.

Click here 2019 - 2022 MY Avalon HV [04/2018 -        ]; DOOR LOCK: POWER DOOR LOCK CONTROL SYSTEM(for HV Model): DTC CHECK / CLEAR

Body Electrical > Main Body > Clear DTCs

(b) Recheck for DTCs.

Body Electrical > Main Body > Trouble Codes

Result

Proceed to

DTC B1243 is not output

A

DTC B1243 is output

B
B

GO TO DIAGNOSTIC TROUBLE CODE CHART

A

9.

PROBLEM SYMPTOMS TABLE

(a) Refer to Problem Symptoms Table.

Click here 2019 - 2022 MY Avalon HV [04/2018 -        ]; DOOR LOCK: POWER DOOR LOCK CONTROL SYSTEM(for HV Model): PROBLEM SYMPTOMS TABLE

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
B

CHECK FOR INTERMITTENT PROBLEMS

C

GO TO STEP 11

A

10.

OVERALL ANALYSIS AND TROUBLESHOOTING*

(a) Terminals of ECU

Click here 2019 MY Avalon HV [04/2018 - 08/2019]; DOOR LOCK: POWER DOOR LOCK CONTROL SYSTEM(for HV Model): TERMINALS OF ECU 2020 - 2022 MY Avalon HV [08/2019 -        ]; DOOR LOCK: POWER DOOR LOCK CONTROL SYSTEM(for HV Model): TERMINALS OF ECU

(b) Data List / Active Test

Click here 2019 - 2022 MY Avalon HV [04/2018 -        ]; DOOR LOCK: POWER DOOR LOCK CONTROL SYSTEM(for HV Model): DATA LIST / ACTIVE TEST

(c) Operation Check

Click here 2019 - 2022 MY Avalon HV [04/2018 -        ]; DOOR LOCK: POWER DOOR LOCK CONTROL SYSTEM(for HV Model): OPERATION CHECK

(d) Inspection

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11.

REPAIR OR REPLACE
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12.

CONFIRMATION TEST
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END