Lexus NX: System Diagram

SYSTEM DIAGRAM

Communication Table

Transmitting ECU

Receiver ECU

Signal

Communication Method

Certification ECU (Smart Key ECU Assembly)

Main Body ECU (Multiplex Network Body ECU)

Back door opener switch assembly signal

CAN

Main Body ECU (Multiplex Network Body ECU)

Multiplex Network Door ECU

Back door opener switch assembly signal

CAN

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 System Description

SYSTEM DESCRIPTION BACK DOOR CLOSER SYSTEM DESCRIPTION (a) Operating any back door opener switch assembly when the back door is fully closed inputs a request signal to the multiplex network door ECU.

 How To Proceed With Troubleshooting

CAUTION / NOTICE / HINT HINT: The back door closer system troubleshooting procedure is based on the premise that the power back door system is operating normally. Check the power back door system f

 Operation Check

OPERATION CHECK CHECK BASIC FUNCTIONS (a) When the back door is partially closed, check that the motor operates to fully close (lock) the back door. (b) Check that the back door can be opened. (c) Whe

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 Installation

INSTALLATION CAUTION / NOTICE / HINT HINT: Use the same procedure for the RH and LH sides. The procedure listed below is for the LH side. PROCEDURE 1. INSTALL SST (a) Align the cutout on end of the shock rod of the front shock absorber assembly LH with the installation position. NOTICE: Be s

 Open in Bus 5 Main Bus Line

DESCRIPTION There may be an open circuit in one of the CAN main bus lines when the resistance between terminals 15 (CA5H) and 16 (CA5L) of the central gateway ECU (network gateway ECU) is 70 Ω or higher. Symptom Trouble Area Resistance between terminals 15 (CA5H) and 16 (CA5L) of central g

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