Lexus ES manuals

Lexus ES: How To Proceed With Troubleshooting

CAUTION / NOTICE / HINT

HINT:

  • Before performing troubleshooting for the front radar sensor system, perform troubleshooting for the pre-collision system.

    Click here

  • *: Use the Techstream.

PROCEDURE

1.

VEHICLE BROUGHT TO WORKSHOP

NEXT

2.

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.

NEXT

3.

CHECK CAN COMMUNICATION SYSTEM*

(a) Using the Techstream, check that the CAN communication system is functioning normally.

Click here

OK:

CAN communication system is functioning normally.

NG

GO TO CAN COMMUNICATION SYSTEM

OK

4.

CHECK FOR DTCs*

(a) Check for DTCs.

Body Electrical > Front Radar Sensor > Trouble Codes

(b) Make a note of any DTCs that are output.

Result

Proceed to

DTCs are not output

A

DTC C1A1100 is output

B

DTCs other than C1A1100 are output

C

B

GO TO DTC CHART (C1A1100)

C

GO TO STEP 7

A

5.

CHECK VEHICLE CONTROL HISTORY*

(a) Using the Techstream, check for Vehicle Control History.

Body Electrical > Front Radar Sensor > Utility

Tester Display

Vehicle Control History (RoB)

(b) Record any output Vehicle Control History.

Result

Proceed to

Vehicle Control History codes are not output

A

Vehicle Control History code X2026 or X2028 is output

B

Vehicle Control History codes other than X2026 and X2028 are output

C

A

GO TO SYMPTOM SIMULATION

B

GO TO VEHICLE CONTROL HISTORY (X2026 or X2028)

C

6.

RECONFIRM VEHICLE CONTROL HISTORY*

(a) Using the Techstream, clear the Vehicle Control History.

Body Electrical > Front Radar Sensor > Utility

Tester Display

Vehicle Control History (RoB)

(b) Using the Techstream, check for Vehicle Control History.

Body Electrical > Front Radar Sensor > Utility

Tester Display

Vehicle Control History (RoB)

Result

Proceed to

Vehicle Control History codes are not output

A

Vehicle Control History codes are output

B

A

GO TO SYMPTOM SIMULATION

B

GO TO VEHICLE CONTROL HISTORY

7.

RECONFIRM DTC OUTPUT*

(a) Clear the DTCs.

Body Electrical > Front Radar Sensor > Clear DTCs

(b) Reproduce the vehicle conditions that were present when the DTCs that were noted were stored.

HINT:

Refer to each corresponding DTC for details on the detection conditions.

Click here

(c) Recheck for DTCs.

Body Electrical > Front Radar Sensor > Trouble Codes

Result

Proceed to

DTCs are not output

A

DTCs are output

B

A

GO TO STEP 5

B

GO TO DTC CHART

READ NEXT:

 Utility

UTILITY NOTICE: When replacing the millimeter wave radar sensor assembly, always replace it with a new one. If a millimeter wave radar sensor assembly which was installed to another vehicle is used

 Problem Symptoms Table

PROBLEM SYMPTOMS TABLE HINT: Use the table below to help determine the cause of problem symptoms. If multiple suspected areas are listed, the potential causes of the symptoms are listed in order of

 Terminals Of Ecu

TERMINALS OF ECU NOTICE: Turning the power switch on (IG) with connectors disconnected may cause DTCs to be stored. Make sure to clear the DTCs after inspection has been performed. Do not apply e

SEE MORE:

 Removal

REMOVAL CAUTION / NOTICE / HINT The necessary procedures (adjustment, calibration, initialization or registration) that must be performed after parts are removed and installed, or replaced during inverter with converter assembly removal/installation are shown below. Necessary Procedures After Parts

 Switch Lights of Remote Touch Always Illuminate or cannot be Controlled Using Rheostat

DESCRIPTION Power is supplied to the remote touch (remote operation controller assembly) illumination when the light control switch is in the tail or head position. HINT: When the remote touch (remote operation controller assembly) is in self check mode, the switch illumination on the remote touc

© 2016-2024 Copyright www.lexguide.net