Lexus ES: Diagnosis System

Lexus ES (XZ10) Service Manual / Audio & Visual & Telematics / Park Assist / Monitoring / Parking Support Alert System (for Hv Model) / Diagnosis System

DIAGNOSIS SYSTEM

DESCRIPTION

(a) When troubleshooting a vehicle with a diagnosis system, the only difference from the usual troubleshooting procedure is connecting the Techstream to the vehicle and reading various data output from the clearance warning ECU assembly.

The clearance warning ECU assembly stores DTCs when the ECU detects a malfunction in the ECU itself or in its circuits.

To check the DTCs, connect the Techstream to the DLC3 on the vehicle. The Techstream makes it possible to clear the DTCs, activate the various actuators, and check the freeze frame data and Data List.

CHECK DLC3

(a) Check the DLC3.

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Front Passenger Side Power Window does not Operate with Front Passenger Side Power Window Switch

DESCRIPTION When the engine switch is on (IG), the power window regulator motor assembly (for front passenger door) is operated by the power window regulator switch assembly. The power window regulator motor assembly (for front passenger door) has motor, regulator, and ECU functions. WIRING DIAGRAM

Buzzer does not Sound

WIRING DIAGRAM CAUTION / NOTICE / HINT NOTICE: When checking for DTCs, make sure that the blind spot monitor system is turned on. Inspect the fuses for circuits related to this system before performing the following procedure. PROCEDURE 1. CHECK DTC (a) Turn the power switch off. (

Lexus ES: Diagnosis System

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Diagnostic Trouble Code Chart

Dtc Check / Clear

How To Proceed With Troubleshooting

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Front Passenger Side Power Window does not Operate with Front Passenger Side Power Window Switch

Buzzer does not Sound