Lexus NX: IG Power Source Circuit
DESCRIPTION
The main power source is supplied to the air conditioning amplifier assembly when the power switch is on (IG).
The power is used for operating the air conditioning amplifier assembly, servo motors, etc.
WIRING DIAGRAM
CAUTION / NOTICE / HINT
NOTICE:
Inspect the fuses for circuits related to this system before performing the following procedure.
PROCEDURE
| 1. | CHECK HARNESS AND CONNECTOR (AIR CONDITIONING AMPLIFIER ASSEMBLY - BATTERY AND BODY GROUND) |
| (a) Disconnect the air conditioning amplifier assembly connector. |
|
(b) Measure the voltage according to the value(s) in the table below.
Standard Voltage:
| Tester Connection | Switch Condition | Specified Condition |
|---|---|---|
| I50-1 (IG+) - Body ground | Power switch off | Below 1 V |
| I50-1 (IG+) - Body ground | Power switch on (IG) | 11 to 14 V |
(c) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
| Tester Connection | Condition | Specified Condition |
|---|---|---|
| I50-14 (GND) - Body ground | Always | Below 1 Ω |
| OK | .gif) | PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE |
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| NG | | REPAIR OR REPLACE HARNESS OR CONNECTOR |
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Back-up Power Source Circuit
DESCRIPTION The back-up power source circuit for the air conditioning amplifier assembly is shown below. Power is supplied even when the power switch is off. The power is used for diagnostic trouble c
Removal
REMOVAL PROCEDURE 1. RECOVER REFRIGERANT FROM REFRIGERATION SYSTEM Click here 2. DRAIN ENGINE COOLANT Click here 3. DISCONNECT AIR CONDITIONER TUBE AND ACCESSORY ASSEMBLY (a) Remove the bolt an
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PCS (Pre-Collision System)
The pre-collision system uses a
radar sensor and front camera to
detect objects in front of
the vehicle. When the system
determines that the possibility of a
frontal collision with an object is
high, a warning operates to urge
the driver to take evasive action
and the potential brake pressur
Components
COMPONENTS ILLUSTRATION *A for Sport Package - - *1 BACK DOOR NAME PLATE *2 BACK DOOR NO. 2 NAME PLATE *3 REAR BODY NO. 4 NAME PLATE *4 SYMBOL EMBLEM ● Non-reusable part - - ILLUSTRATION *A for Sport Package - - *1 FRONT FENDER NO. 1 NAME
