Toyota Avalon Service & Repair Manual: How To Proceed With Troubleshooting

CAUTION / NOTICE / HINT

HINT:

  • Use the following procedure to troubleshoot the intelligent clearance sonar system.
  • *: Use the Techstream.

PROCEDURE

1.

VEHICLE BROUGHT TO WORKSHOP

NEXT

2.

CUSTOMER PROBLEM ANALYSIS

NEXT

3.

INSPECT BATTERY VOLTAGE

(a) Measure the battery voltage.

Standard Voltage:

11 to 14 V

If the voltage is below 11 V, replace or recharge the battery before proceeding to the next step.

NEXT

4.

CHECK CAN COMMUNICATION SYSTEM*

(a) Use the Techstream to check if the CAN communication system is functioning normally.

Click here

Result

Proceed to

CAN communication system DTCs are not output

A

CAN communication system DTCs are output

B

B

GO TO CAN COMMUNICATION SYSTEM

A

5.

PROBLEM SYMPTOM CONFIRMATION

NEXT

6.

CHECK DTC*

(a) Check for DTCs.

Body Electrical > Advanced Parking Guidance/ICS/Intuitive P/A > Trouble Codes

Result

Proceed to

DTCs are output

A

DTCs are not output (Problem symptom does not occur)

B

DTCs are not output (Problem symptom occurs)

C

B

GO TO STEP 8

C

GO TO STEP 9

A

7.

DIAGNOSTIC TROUBLE CODE CHART (INTELLIGENT CLEARANCE SONAR SYSTEM)

(a) Refer to Diagnostic Trouble Code Chart.

Click here

NOTICE:

The clearance warning ECU assembly outputs DTCs for the following system. When DTCs other than those in Diagnostic Trouble Code Chart for the intelligent clearance sonar system are output, refer to Diagnostic Trouble Code Chart for the relevant systems.

System

Proceed to

Intuitive Parking Assist System

NEXT

GO TO STEP 11

8.

SYMPTOM SIMULATION

(a) Refer to Symptom Simulation.

Click here

NEXT

9.

PROBLEM SYMPTOMS TABLE

(a) Refer to Problem Symptoms Table.

Click here

Result

Proceed to

Fault is not listed in Problem Symptoms Table

A

Fault is listed in Problem Symptoms Table

B

B

GO TO STEP 11

A

10.

OVERALL ANALYSIS AND TROUBLESHOOTING

(a) Operation Check

Click here

(b) Terminals of ECU

Click here

(c) Data List / Active Test

Click here

NEXT

11.

CIRCUIT INSPECTION

NEXT

12.

IDENTIFICATION OF PROBLEM

NEXT

13.

REPAIR OR REPLACE

NEXT

14.

CONFIRMATION TEST

NEXT

END

    Fail-safe Chart

    Operation Check

    See More:

    Toyota Avalon Service & Repair Manual > Can Communication System(for Hv Model): Open in Bus 4 Main Bus Line
    DESCRIPTION There may be an open circuit in one of the CAN main bus lines when the resistance between terminals 22 (CA2H) and 7 (CA2L) of the central gateway ECU (network gateway ECU) is 70 Ω or higher. Symptom Trouble Area Resistance between terminals 22 (CA2H) and 7 (CA2L) of the central gateway ...

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