Lexus NX: Heated Steering Wheel System

Lexus NX Service Manual / Steering / Steering Column / Heated Steering Wheel System

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 Precaution

PRECAUTION PRECAUTION FOR DISCONNECTING CABLE FROM NEGATIVE AUXILIARY BATTERY TERMINAL NOTICE: When disconnecting and reconnecting the auxiliary battery. Click here HINT: When disconnecting and reco

 Parts Location

PARTS LOCATION ILLUSTRATION *1 NO. 2 COMBINATION SWITCH ASSEMBLY - STEERING HEATER SWITCH *2 STEERING WHEEL ASSEMBLY - STEERING WHEEL HEATER UNIT *3 INSTRUMENT PANEL JUNCTION BLOCK ASS

 System Diagram

SYSTEM DIAGRAM SYSTEM DIAGRAM

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 Catalyst System Efficiency Below Threshold (Bank 1) (P0420)

MONITOR DESCRIPTION The ECM uses sensors mounted in front of and behind the Three-Way Catalytic Converter (TWC) to monitor its efficiency. The first sensor, the air fuel ratio sensor, sends pre-catalyst information to the ECM. The second sensor, the heated oxygen sensor, sends post-catalyst informat

 Diagnosis System

DIAGNOSIS SYSTEM CHECK DLC3 (a) Check the DLC3. Click here INSPECT AUXILIARY BATTERY VOLTAGE (a) Measure the auxiliary battery voltage with the power switch off. Standard voltage: 11 to 14 V If the voltage is below 11 V, recharge or replace the auxiliary battery.

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