Lexus ES: 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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Diagnostic Trouble Code Chart
DIAGNOSTIC TROUBLE CODE CHART Parking Support Alert System DTC No. Detection Item Link C1611 ECU Malfunction C168D Vehicle Information Unmatched C1AE1 Front Left Sen
Dtc Check / Clear
DTC CHECK / CLEAR CHECK DTC (a) Connect the Techstream to the DLC3. (b) Turn the engine switch on (IG). (c) Turn the parking support alert system on. (d) Turn the Techstream on. (e) Enter the followin
How To Proceed With Troubleshooting
CAUTION / NOTICE / HINT HINT:
Use the following procedure to troubleshoot the parking support alert system.
*: Use the Techstream.
PROCEDURE 1. VEHICLE BROUGHT TO WORKSHOP
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Data List / Active Test
DATA LIST / ACTIVE TEST DATA LIST NOTICE: In the table below, the values listed under "Normal Condition" are reference values. Do not depend solely on these reference values when deciding whether a part is faulty or not. HINT: Using the Techstream to read the Data List allows the values or states of
Parts Location
PARTS LOCATION ILLUSTRATION *A w/ Auto Wiper System - - *1 WINDSHIELD WIPER MOTOR ASSEMBLY *2 RAIN SENSOR *3 LEVEL WARNING SWITCH ASSEMBLY *4 WINDSHIELD WASHER MOTOR AND PUMP ASSEMBLY *5 NO. 1 ENGINE ROOM RELAY BLOCK AND NO. 1 JUNCTION BLOCK ASSEMBLY - WIPER FUSE
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