Lexus ES manuals

Lexus ES: How To Proceed With Troubleshooting

CAUTION / NOTICE / HINT

HINT:

  • Use the following procedure to troubleshoot the parking assist monitor system.
  • *: Use the Techstream.

PROCEDURE

1.

VEHICLE BROUGHT TO WORKSHOP

NEXT

2.

CUSTOMER PROBLEM ANALYSIS

(a) Ask the customer about the problems and the conditions at the time the malfunction occurred to make sure the problem symptom was not temporarily caused by radio waves in the surrounding environment.

HINT:

The parking assist monitor display may be temporarily distorted due to radio waves around the vehicle.

Problem Symptom

Cause

*: DTCs output as "Hist" will not be output again after DTCs are cleared.
Both of the following conditions are met:
  • The problem symptom indicates a parking assist monitor display malfunction and the problem symptom cannot be reproduced.
  • DTC C1622 is output as "Hist" only.*

The display may be temporarily distorted when the vehicle is close to an object that transmits radio waves, such as a telecommunication tower, an airport or a truck equipped with a transceiver.

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.

SYSTEM CHECK

(a) Check the vehicle specification.

Result

Proceed to

w/ Navigation System

A

w/o Navigation System

B

B

GO TO STEP 6

A

5.

CHECK NAVIGATION SYSTEM

(a) Refer to Navigation System.

Click here

Result

Proceed to

Navigation system is normal

A

Navigation system is abnormal

B

A

GO TO STEP 7

B

GO TO NAVIGATION SYSTEM

6.

CHECK AUDIO AND VISUAL SYSTEM

(a) Refer to Audio and Visual System.

Click here

Result

Proceed to

Audio and visual system is normal

A

Audio and visual system is abnormal

B

B

GO TO AUDIO AND VISUAL SYSTEM

A

7.

CHECK COMMUNICATION FUNCTION OF 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

8.

CHECK FOR DTC*

(a) Check for DTCs and make a note of any codes that are output.

Chassis > Rear Camera > Trouble Codes

(b) Clear the DTCs.

Chassis > Rear Camera > Clear DTCs

(c) Recheck for DTCs. Try to prompt the DTC by simulating the original activity that the DTC suggests.

Chassis > Rear Camera > Trouble Codes

Result

Proceed to

No DTCs are output

A

DTCs are output

B

B

GO TO STEP 11

A

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) Diagnosis System

Click here

(b) Terminals of ECU

Click here

(c) Data List / Active Test

Click here

NEXT

11.

ADJUST, REPAIR OR REPLACE

NEXT

12.

CONFIRMATION TEST

NEXT

END

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