Lexus NX: Diagnostic Trouble Code Chart

DIAGNOSTIC TROUBLE CODE CHART

Wireless Door Lock Control System

DTC No.

Detection Item

Link

B1242

Wireless Door Lock Tuner Circuit Malfunction

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 Wireless Door Lock Tuner Circuit Malfunction (B1242)

DESCRIPTION The door control receiver 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) decod

 No Answer-Back

DESCRIPTION In some cases, wireless door lock control functions are normal but the hazard warning light and/or wireless door lock buzzer answer-back function does not operate. In such cases, hazard wa

 Heating / Air Conditioning

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 Inspection

INSPECTION PROCEDURE 1. INSPECT FRONT LUMBAR POWER SEAT SWITCH (a) Measure the resistance according to the value(s) in the table below. Standard Resistance: Tester Connection Switch Condition Specified Condition 3 (H) - 5 (B) Hold switch on Below 1 Ω 1 (R) - 2 (E) 2 (E) -

 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 below. HINT: Measure the values on the wire harness side with the connector disconnected. Terminal

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