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 BATTERY VOLTAGE

Standard Voltage:

11 to 14 V

  • If the voltage is below 11 V, recharge or replace the 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 > Brake/EPB > Trouble Codes

(b) Clear the DTCs and freeze frame data.

Chassis > Brake/EPB > Clear DTCs

(c) Recheck for DTCs.

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

Chassis > Brake/EPB > 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 CAUTION / NOTICE / HINT NOTICE: The e

 Parts Location

PARTS LOCATION ILLUSTRATION *1 BRAKE ACTUATOR ASSEMBLY - SKID CONTROL ECU *2 ECM *3 NO. 1 ENGINE ROOM RELAY BLOCK AND NO. 1 JUNCTION BLOCK ASSEMBLY - ABS NO. 2 FUSE - - ILLUSTRA

 Precaution

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

SEE MORE:

 Relay

On-vehicle InspectionON-VEHICLE INSPECTION PROCEDURE 1. INSPECT H-LP LH RELAY (a) Measure the resistance according to the value(s) in the table below. Standard Resistance: Tester Connection Condition Specified Condition 3 - 5 Voltage not applied between terminals 1 and 2 10 kΩ or

 ECM Power Source Circuit

DESCRIPTION When the engine switch is turned on (IG), the battery voltage is applied to IGSW of the ECM. When the transistor in the MREL circuit operates, current flows from the battery to ground through the drive circuit of the EFI-MAIN NO. 1 relay, thus operating the relay which supplies power to

© 2016-2025 Copyright www.lexguide.net