Lexus NX: Steering Heater Switch
Inspection
INSPECTION
PROCEDURE
1. REMOVE NO. 2 COMBINATION SWITCH ASSEMBLY
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2. INSPECT NO. 2 COMBINATION SWITCH ASSEMBLY
| (a) Measure the voltage according to the value (s) in the table below. Standard Voltage:
HINT: As the circuit has a diode, perform the measurement in diode test mode, and do not mistake the polarity. |
|
(b) Measure the resistance according to the value (s) in the table below
Standard Resistance:
| Tester Connection | Switch Condition | Specified Condition |
|---|---|---|
| 7 (IG1) - 19 (ECU) | Steering heater switch is pushed | Below 1 Ω |
| Steering heater switch is not pushed | 10 kΩ or higher |
(c) Measure the voltage according to the value (s) in the table below.
(d) Measure the resistance according to the value (s) in the table below.
3. INSTALL NO. 2 COMBINATION SWITCH ASSEMBLY
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Precaution
PRECAUTION PRECAUTION FOR DISCONNECTING CABLE FROM NEGATIVE AUXILIARY BATTERY TERMINAL NOTICE:
After the power switch is turned off, there may be a waiting time before disconnecting the negative (-
Parts Location
PARTS LOCATION ILLUSTRATION *1 NO. 1 ENGINE ROOM RELAY BLOCK - IG2-MAIN RELAY - IG2-MAIN FUSE - STRG LOCK FUSE - - ILLUSTRATION *1 POWER SWITCH *2 INSTRUMENT PANEL JUNCTION BLOC
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Combination Meter ECU Communication Stop Mode
DESCRIPTION Detection Item Symptom Trouble Area Combination Meter ECU Communication Stop Mode Any of the following conditions are met:
Communication stop for "Combination Meter" is indicated on the "Communication Bus Check" screen of the Techstream.
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Communication sys
Dtc Check / Clear
DTC CHECK / CLEAR CHECK DTC (a) Connect the Techstream to the DLC3. (b) Turn the power switch on (IG). (c) Turn the Techstream on. (d) Enter the following menus: Body Electrical / Driver Seat / Trouble Codes. Body Electrical > Driver Seat > Trouble Codes (e) Check for DTCs. CLEAR DTC (a) Conne
