Lexus NX: Radio Receiver Power Source Circuit

DESCRIPTION

This is the power source circuit to operate the radio receiver assembly.

WIRING DIAGRAM

CAUTION / NOTICE / HINT

NOTICE:

  • Inspect the fuses for circuits related to this system before performing the following procedure.
  • When replacing the radio receiver assembly, always replace it with a new one.

    If a radio receiver assembly which was installed to another vehicle is used, the following may occur:

    • A communication malfunction DTC may be stored.
    • The radio receiver assembly may not operate normally.

HINT:

Depending on the parts that are replaced during vehicle inspection or maintenance, performing initialization, registration or calibration may be needed. Refer to Precaution for Navigation System.

Click here

PROCEDURE

1.

CHECK HARNESS AND CONNECTOR (RADIO RECEIVER ASSEMBLY - BATTERY AND BODY GROUND)

(a) Disconnect the I151 and I152 radio receiver assembly connectors.

*a

Front view of wire harness connector

(to Radio Receiver Assembly)

(b) Measure the resistance according to the value(s) in the table below.

Standard Resistance:

Tester Connection

Condition

Specified Condition

I151-1 (GND1) - Body ground

Always

Below 1 Ω

(c) Measure the voltage according to the value(s) in the table below.

Standard Voltage:

Tester Connection

Condition

Specified Condition

I151-4 (+B1) - I151-1 (GND1)

Power switch off

11 to 14 V

I151-15 (ACC1) - I151-1 (GND1)

Power switch on (ACC)

11 to 14 V

I152-19 (IG) - I151-1 (GND1)

Power switch on (IG)

11 to 14 V

OK

PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE

NG

REPAIR OR REPLACE HARNESS OR CONNECTOR

READ NEXT:

 Remote Touch

 Components

COMPONENTS ILLUSTRATION *1 DECK FLOOR BOX LH *2 NO. 3 DECK BOARD SUB-ASSEMBLY *3 REAR DECK FLOOR BOX *4 NEGATIVE AUXILIARY BATTERY TERMINAL N*m (kgf*cm, ft.*lbf): Specified

 Removal

REMOVAL PROCEDURE 1. REMOVE DECK BOARD ASSEMBLY Click here 2. REMOVE NO. 3 DECK BOARD SUB-ASSEMBLY Click here 3. REMOVE REAR DECK FLOOR BOX Click here 4. REMOVE DECK FLOOR BOX LH Click here 5.

SEE MORE:

 Disassembly

DISASSEMBLY PROCEDURE 1. PRECAUTION NOTICE: Be sure to read Precaution thoroughly before servicing. Click here Do not reuse parts which have reduced fastening ability due to thread damage. When installing components, make sure that the wire harness is not pinched or pulled. Do not use sol

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DESCRIPTION The hybrid vehicle control ECU monitors the voltage of the HV battery. The hybrid vehicle control ECU stops compressor control and stores this DTC when the monitored voltage is outside the specified range. This DTC will be stored as a history DTC. Compressor control may not resume unless

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