Lexus ES manuals

Lexus ES: How To Proceed With Troubleshooting

CAUTION / NOTICE / HINT

HINT:

  • Use the following procedure to troubleshoot the parking support brake system.
  • *: Use the Techstream.

PROCEDURE

1.

VEHICLE BROUGHT TO WORKSHOP

NEXT

2.

CUSTOMER PROBLEM ANALYSIS

NEXT

3.

INSPECT AUXILIARY BATTERY VOLTAGE

(a) Measure the auxiliary battery voltage.

Standard Voltage:

11 to 14 V

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

SYSTEM CHECK

(a) Check the vehicle specifications.

Result

Proceed to

w/ Blind Spot Monitor System

A

w/o Blind Spot Monitor System

B

B

GO TO STEP 9

A

6.

CHECK BLIND SPOT MONITOR SYSTEM

(a) Use the Techstream to check if the blind spot monitor system is functioning normally.

Click here

Result

Proceed to

DTCs are not output (w/ Panoramic View Monitor System)

A

DTCs are not output (w/ Parking Assist Monitor System)

B

DTCs are output

C

B

GO TO STEP 8

C

GO TO BLIND SPOT MONITOR SENSOR

A

7.

CHECK PANORAMIC VIEW MONITOR SYSTEM

(a) Use the Techstream to check if the panoramic view monitor system is functioning normally.

Click here

Result

Proceed to

DTCs are not putput

A

DTCs are output

B

B

GO TO PANORAMIC VIEW MONITOR SYSTEM

A

8.

PROBLEM SYMPTOM CONFIRMATION

NEXT

9.

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 11

C

GO TO STEP 12

A

10.

DIAGNOSTIC TROUBLE CODE CHART (PARKING SUPPORT BRAKE 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 parking support brake system are output, refer to Diagnostic Trouble Code Chart for the relevant systems.

System

Proceed to

Parking Support Alert System

NEXT

GO TO STEP 14

11.

SYMPTOM SIMULATION

(a) Refer to Symptom Simulation.

Click here

NEXT

12.

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 14

A

13.

OVERALL ANALYSIS AND TROUBLESHOOTING

(a) Operation Check

Click here

(b) Terminals of ECU

Click here

(c) Data List / Active Test

Click here

NEXT

14.

CIRCUIT INSPECTION

NEXT

15.

IDENTIFICATION OF PROBLEM

NEXT

16.

REPAIR OR REPLACE

NEXT

17.

CONFIRMATION TEST

NEXT

END

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 Precaution

PRECAUTION PRECAUTION FOR DISCONNECTING CABLE FROM NEGATIVE AUXILIARY BATTERY TERMINAL NOTICE: When disconnecting the cable from the negative (-) auxiliary battery terminal, initialize the following s

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 Diagnostic Trouble Code Chart

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