lexus Workshop Repair Guides

Lexus Workshop Service and Repair Manuals

Initial Inspection and Diagnostic Overview|Page 3879 > < Initial Inspection and Diagnostic Overview|Page 3877
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Connect the Techstream to the vehicle, and turn a courtesy switch on and off at 1.5 second intervals until communication between the
Techstream and vehicle begins.

PROCEDURE

1. READ VALUE USING TECHSTREAM (LIN COMMUNICATION)

(a) Using the Techstream, read the "Data List".

Body No.5:

OK:

Techstream displays "With" and "OK".

NG --  CHECK HARNESS AND CONNECTOR (FRONT LIGHT ECU - RAIN SENSOR)

OK --  USE SIMULATION METHOD TO CHECK  See: Diagrams/Diagnostic Aids/How To Proceed With Troubleshooting

2. CHECK HARNESS AND CONNECTOR (FRONT LIGHT ECU - RAIN SENSOR)

(a) Disconnect the A50 ECU connector.

(b) Disconnect the X8 sensor connector.

(c) Measure the resistance and voltage according to the value(s) in the table below.

Standard resistance:

Initial Inspection and Diagnostic Overview|Page 3879 > < Initial Inspection and Diagnostic Overview|Page 3877