Lexus NX: Initialization
INITIALIZATION
INITIALIZE MULTIPLEX NETWORK DOOR ECU
NOTICE:
Initialization of the multiplex network door ECU (back door initial position learning) is necessary if the following work procedures are performed while the back door is open.
- The cable to the negative (-) auxiliary battery terminal is connected.
- A power source system fuse of the power back door system is disconnected and reconnected.
- The multiplex network door ECU is replaced or the connectors are disconnected.
The power back door does not operate unless the multiplex network door ECU is initialized.
HINT:
Initialization is not necessary if the above procedures are performed while the back door is closed.
NOTICE:
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After the power switch is turned off, there may be a waiting time before disconnecting the negative (-) auxiliary battery terminal.
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When disconnecting and reconnecting the auxiliary battery.
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HINT:
When disconnecting and reconnecting the auxiliary battery, there is an automatic learning function that completes learning when the respective system is used.
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(a) Initialization operation
(1) Fully close the back door by hand.
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Use the table below to help determine the cause of problem symptoms. If multiple suspected areas are listed, the potential causes of the symptoms are listed in order of
Dtc Check / Clear
DTC CHECK / CLEAR CHECK FOR 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: Bod
Terminals Of Ecu
TERMINALS OF ECU CHECK MULTIPLEX NETWORK DOOR ECU (a) Disconnect the Y26 and Y27 multiplex network door ECU connectors. (b) Measure the voltage and resistance according to the value(s) in the table b
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On-vehicle Inspection
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Installation
INSTALLATION PROCEDURE 1. INSTALL BACK DOOR LOCK ASSEMBLY (BACK DOOR COURTESY SWITCH) HINT:
When installing a new back door lock assembly (back door courtesy switch), if there is a rope on the assembly, remove the rope before installation.
The rope can be removed from the back door lock assembl
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