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.
READ NEXT:
Problem Symptoms Table
PROBLEM SYMPTOMS TABLE HINT:
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
SEE MORE:
System Too Lean (Bank 1) (P0171,P0172)
DESCRIPTION The fuel trim is related to the feedback compensation value, not to the basic injection duration. The fuel trim consists of both the short-term and long-term fuel trims. The short-term fuel trim is fuel compensation that is used to constantly maintain the air fuel ratio at stoichiometric
Removal
REMOVAL CAUTION / NOTICE / HINT HINT:
Use the same procedure for the RH and LH sides.
The procedures listed below are for the LH side.
PROCEDURE 1. REMOVE REAR DOOR LOWER OUTSIDE MOULDING SUB-ASSEMBLY LH HINT: When removing the rear door lower outside moulding sub-assembly LH, heat the rear
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