DOOR LOCK  WIRELESS DOOR LOCK CONTROL SYSTEM(for NR Series Engine)  B1242  Wireless Door Lock Tuner Circuit Malfunction  

The electrical key and tire pressure monitoring system receiver assembly is used to receive radio waves related to the entry functions of the electrical key transmitter sub-assembly. The certification ECU (smart key ECU assembly) decodes the requested electrical key transmitter sub-assembly operation by identifying a key code based on the radio waves received via the electrical key and tire pressure monitoring system receiver assembly. The electrical key and tire pressure monitoring system receiver assembly receives a signal from the electrical key transmitter sub-assembly and sends signals to the main body ECU (multiplex network body ECU) through the certification ECU (smart key ECU assembly). (ex. If a door lock operation is requested, the certification ECU (smart key ECU assembly) sends a door lock command to the main body ECU (multiplex network body ECU)).

NOTICE:

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When using the GTS with the engine switch off, connect the GTS to the DLC3 and turn a courtesy light switch on and off at intervals of 1.5 seconds or less until communication between the GTS and the vehicle begins. Then select Model Code "KEY REGIST" under manual mode and enter the following menus: Body Electrical / Entry&Start(CAN). While using the GTS, periodically turn a courtesy light switch on and off at intervals of 1.5 seconds or less to maintain communication between the GTS and the vehicle.

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Before replacing the certification ECU (smart key ECU assembly), refer to Service Bulletin.

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When replacing or inspecting the electrical key and tire pressure monitoring system receiver assembly and wire harness, do not change the position or length of the wire harness. If the wire harness is too close to the electrical key and tire pressure monitoring system receiver assembly, the performance of the entry function and wireless function may be affected.

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This DTC is not stored within 10 seconds of the engine switch being turned from on (IG) to off.

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Make sure that there are no electrical key transmitter sub-assemblies in the vehicle.

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When replacing the electrical key and tire pressure monitoring system receiver assembly, read the transmitter IDs (tire pressure warning system) stored in the old ECU using the GTS and write them down before removal.

Click hereSuspension>TIRE PRESSURE MONITORING>TIRE PRESSURE WARNING SYSTEM (for Gasoline Model (for Type A))>REGISTRATION202304,999999,_53,_080780,_0393955,RM100000002B0BZ,

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If the electrical key and tire pressure monitoring system receiver assembly has been replaced, it is necessary to perform initialization (Click hereSuspension>TIRE PRESSURE MONITORING>TIRE PRESSURE WARNING SYSTEM (for Gasoline Model (for Type A))>INITIALIZATION202304,999999,_53,_080780,_0393955,RM100000002BB37,) after registration (Click hereSuspension>TIRE PRESSURE MONITORING>TIRE PRESSURE WARNING SYSTEM (for Gasoline Model (for Type A))>REGISTRATION202304,999999,_53,_080780,_0393955,RM100000002B0BZ,) of the transmitter IDs to the electrical key and tire pressure monitoring system receiver assembly.