Lexus ES manuals

Lexus ES: Diagnosis System

Lexus ES (XZ10) Service Manual / Steering / Steering Column / Power Tilt And Power Telescopic Steering Column System (for Hv Model) / Diagnosis System

DIAGNOSIS SYSTEM

DESCRIPTION

(a) When troubleshooting a vehicle with the diagnostic system, the only difference from the usual troubleshooting procedure is connecting the Techstream to the vehicle and reading various data output from the multiplex tilt and telescopic ECU.

The multiplex tilt and telescopic ECU stores DTCs when the ECU detects a malfunction in itself or in its circuits.

To check the DTCs, connect the Techstream to the DLC3 on the vehicle. The Techstream enables the DTCs to be cleared, several actuators to be activated, and the freeze frame data and various forms of steering data to be checked.

CHECK DLC3

(a) Check the DLC3.

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 Dtc Check / Clear

DTC CHECK / CLEAR CHECK DTC (a) Turn the power switch off. (b) Connect the Techstream to the DLC3. (c) Turn the power switch on (IG). (d) Turn the Techstream on. (e) Enter the following menus: Body El

 Freeze Frame Data

FREEZE FRAME DATA FREEZE FRAME DATA NOTICE: Freeze frame data values will vary depending on the measurement conditions, surroundings, or vehicle conditions. For this reason, there may be a problem

 Fail-safe Chart

FAIL-SAFE CHART HINT: If the power source voltage to the multiplex tilt and telescopic ECU returns to normal within 10 seconds during tilt or telescopic operation, the operation will be resumed. If it

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 Inspection

INSPECTION PROCEDURE 1. INSPECT STEERING WHEEL SWITCH HOUSING *a Component without harness connected (Steering Wheel Switch Housing) - - (a) Measure the resistance according to the value(s) in the table below. Standard Resistance: Light Switch Circuit Tester Connection Condition

 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 electric parking brake may still operate up to 20 seconds after the engine switch is turned off. Befo

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