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: Tester Connection (Positive (+) Tester Probe - Negative (-) Tester Probe) | Switch Condition | Specified Condition | 7 (IG1) - 20 (IND) | Always | Below 1.25 V | 19 (ECU) - 20 (IND) | Steering heater switch is pushed | Below 1.25 V | HINT: As the circuit has a diode, perform the measurement in diode test mode, and do not mistake the polarity. | | *a | Component without harness connected (No. 2 Combination Switch Assembly (Steering Heater Switch)) | | |
(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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READ NEXT:
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 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
SEE MORE:
DESCRIPTION This DTC is stored when there is an open or short circuit in the communication line between the rear sensors and the ECU, or when there is a malfunction in a rear sensor. DTC No. Detection Item DTC Detection Condition Trouble Area C1AED Rear Sensor Communication Malfunctio
DESCRIPTION Detection Item Symptom Trouble Area Suspension Control ECU Communication Stop Mode Any of the following conditions are met:
Communication stop for "Suspension Control (Air Suspension)" is indicated on the "Communication Bus Check" screen of the Techstream.
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