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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ADJUSTMENT CAUTION / NOTICE / HINT HINT:
Use the same procedure for the RH and LH sides.
The procedure listed below is for the LH side.
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