Lexus ES manuals

Lexus ES: How To Proceed With Troubleshooting

CAUTION / NOTICE / HINT

HINT:

*: Use the Techstream.

PROCEDURE

1.

VEHICLE BROUGHT TO WORKSHOP

NEXT

2.

CUSTOMER PROBLEM ANALYSIS

(a) Interview the customer and confirm the problem.

Click here

NEXT

3.

INSPECT AUXILIARY BATTERY VOLTAGE

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.
NEXT

4.

CHECK DTC AND FREEZE FRAME DATA*

(a) Check and record DTCs and freeze frame data.

Chassis > Electric Parking Brake > Trouble Codes

(b) Clear the DTCs and freeze frame data.

Chassis > Electric Parking Brake > Clear DTCs

(c) Recheck for DTCs.

(1) Reconfirm the DTCs based on the recorded DTCs and freeze frame data.

Chassis > Electric Parking Brake > Trouble Codes

(2) Try to reproduce the problem symptoms based on the recorded DTCs and freeze frame data, and then check if the DTCs are output again.

Result

Proceed to

DTCs are not output (Problem symptom occurs.)

A

DTCs are output

B

DTCs are not output (Problem symptom does not occur.)

C

HINT:

  • Refer to Diagnostic Trouble Code Chart if any DTCs are output.
  • When DTCs indicating a CAN communication system malfunction are output, first troubleshoot and repair the CAN communication system.
B

GO TO DIAGNOSTIC TROUBLE CODE CHART

C

USE SIMULATION METHOD TO CHECK

A

5.

PROBLEM SYMPTOMS TABLE

(a) Proceed 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 7

A

6.

OVERALL ANALYSIS AND TROUBLESHOOTING*

(a) Refer to Terminals of ECU.

Click here

(b) Refer to Data List / Active Test.

Click here

NEXT

7.

REPAIR OR REPLACE

NEXT

8.

CONFIRMATION TEST

NEXT

END

READ NEXT:

 Message Not Displayed on Multi-information Display When AUTO Function Set to ON/OFF

DESCRIPTION When the AUTO function is set to ON/OFF, a message is displayed on the multi-information display in the combination meter assembly. WIRING DIAGRAM PROCEDURE 1. CHECK OPERATION OF AU

 Parts Location

PARTS LOCATION ILLUSTRATION *1 PARKING BRAKE ECU (BRAKE ACTUATOR ASSEMBLY) *2 ECM *3 NO. 1 ENGINE ROOM RELAY BLOCK AND NO. 1 JUNCTION BLOCK ASSEMBLY - EPB NO. 1 FUSE *4 SKID CONTRO

 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

SEE MORE:

 Back Camera Power Supply Failure (C1621)

DESCRIPTION This DTC is stored if the rear television camera assembly judges as a result of its self check that the signals or signal lines between the rear television camera assembly and parking assist ECU are not normal. DTC No. Detection Item DTC Detection Condition Trouble Area C162

 Problem Symptoms Table

PROBLEM SYMPTOMS TABLE NOTICE: After replacing the radio receiver assembly of vehicles subscribed to pay-type satellite radio broadcasts, registration of the XM radio ID is necessary (w/ SXM Function). If the DCM (telematics transceiver) has been replaced, perform the DCM Activation procedure.

© 2016-2024 Copyright www.lexguide.net