Lexus ES manuals

Lexus ES: How To Proceed With Troubleshooting

CAUTION / NOTICE / HINT

HINT:

  • Use the following procedure to troubleshoot the blind spot monitor system.
  • *: Use the Techstream.

PROCEDURE

1.

VEHICLE BROUGHT TO WORKSHOP

NEXT

2.

CUSTOMER PROBLEM ANALYSIS

HINT:

If there are any scratches or impact marks on the rear bumper, perform the blind spot monitor beam axis confirmation. If any abnormalities are found, perform the blind spot monitor sensor installation condition inspection.

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.

CHECK FOR DTC AND FREEZE FRAME DATA*

(a) Refer to DTC Check / Clear for the blind spot monitor system.

Body Electrical > Blind Spot Monitor Master > Trouble Codes Body Electrical > Blind Spot Monitor Slave > Trouble Codes

(b) Record or print DTCs and freeze frame data, if necessary.

Click here

Result

Proceed to

DTCs are not output.

A

DTCs are output.

B

B

GO TO DIAGNOSTIC TROUBLE CODE CHART

A

6.

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

HINT:

If the symptom does not recur and no DTCs are output, attempt to reproduce the symptoms.

Click here

B

GO TO PROBLEM SYMPTOMS TABLE

A

7.

PERFORM TROUBLESHOOTING BASED ON MALFUNCTION SYMPTOM*

(a) Refer to Terminals of ECU.

Click here

(b) Refer to Diagnosis System.

Click here

(c) Refer to Data List / Active Test.

Click here

NEXT

8.

ADJUST, REPAIR OR REPLACE

Result

Proceed to

When adjusting or repairing

A

When replacing

B

B

GO TO STEP 10

A

9.

CLEAR DTC*

(a) Clear the DTCs.

Click here

Body Electrical > Blind Spot Monitor Master > Clear DTCs Body Electrical > Blind Spot Monitor Slave > Clear DTCs
NEXT

GO TO STEP 10

10.

PERFORM BEAM AXIS INSPECTION

(a) Enter Test Mode (refer to Blind Spot Monitor Beam Axis Inspection).

Click here

(b) Confirm the blind spot monitor beam axis display and perform the blind spot monitor beam axis adjustment.

NEXT

11.

PERFORM CONFIRMATION TEST*

NEXT

END

READ NEXT:

 Parts Location

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 Power Source Circuit

DESCRIPTION This circuit provides power to operate the blind spot monitor sensor. WIRING DIAGRAM CAUTION / NOTICE / HINT NOTICE: Inspect the fuses for circuits related to this system before performin

 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:

 Removal

REMOVAL CAUTION / NOTICE / HINT HINT: Use the same procedure for the RH side and LH side. The following procedure is for the LH side. PROCEDURE 1. REMOVE NO. 2 DOOR TRIM PAD Click here 2. REMOVE MULTIPLEX NETWORK MASTER SWITCH ASSEMBLY WITH FRONT DOOR UPPER ARMREST BASE PANEL (for Driver

 (Extreme) Hybrid/EV Battery Stack 1 Cell Circuit Voltage Below Threshold (P33EC16,P33ED16)

DESCRIPTION If the voltage of an HV battery cell is lower than the threshold for a certain amount of time, the battery ECU assembly will interpret this as a malfunction. DTC No. Detection Item DTC Detection Condition Trouble Area MIL Warning Indicate P33EC16 (Extreme) Hybrid/EV Ba

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