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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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
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DISASSEMBLY CAUTION / NOTICE / HINT NOTICE:
When using a vise, place aluminum plates between the part and vise.
When using a vise, do not overtighten it.
PROCEDURE 1. REMOVE STEERING LOCK ACTUATOR ASSEMBLY (a) Secure the electric power steering column sub-assembly in a vise. (b) Using a cent
FREEZE FRAME DATA FREEZE FRAME DATA NOTICE:
It is difficult to show the specified values (judgment values) clearly because freeze frame data values change significantly due to differences in measurement conditions, surroundings, or vehicle conditions. For this reason, there may be a problem even
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