NAVIGATION SYSTEM > Illumination Circuit


DESCRIPTION

Power is supplied to the navigation receiver assembly and steering pad switch assembly illumination when the light control switch is in the tail or head position.

WIRING DIAGRAM


E282017E01


INSPECTION PROCEDURE

CAUTION:
The vehicle is equipped with a Supplemental Restraint System (SRS) which includes components such as airbags. Before servicing (including removal or installation of parts), be sure to read the precautionary notice for the Supplemental Restraint System (Click here).
1.CHECK ILLUMINATION

  1. Check if the illumination for the navigation receiver assembly, steering pad switch assembly, heater control switch or others (hazard switch, transmission control switch, etc.) comes on when the light control switch is turned to the head or tail position.

    Result 
    Result
    		Proceed to
    Illumination comes on for all components except steering pad switch assembly.
    		A
    Illumination comes on for all components except navigation receiver assembly.
    		B
    No illumination comes on (navigation receiver assembly, hazard switch, heater control switch, etc.).
    		C


B
Go to step 6

C
GO TO LIGHTING SYSTEM (Click here)
A


2.CHECK HARNESS AND CONNECTOR (SPIRAL CABLE SUB-ASSEMBLY - BATTERY)


    E198671E21

  1. Disconnect the spiral cable sub-assembly connector.

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

    Standard Voltage:
    Tester Connection
    		Switch Condition
    		Specified Condition
    S42-12 (IL+2) - Body ground
    		Light control switch tail or head
    		11 to 14 V
    Text in Illustration 
    *a
    		Front view of wire harness connector
    (to Spiral Cable Sub-assembly)


NG
REPAIR OR REPLACE HARNESS OR CONNECTOR
OK


3.INSPECT STEERING PAD SWITCH ASSEMBLY

  1. Remove the steering pad switch assembly (Click here).

  1. Inspect the steering pad switch assembly (Click here).



NG
REPLACE STEERING PAD SWITCH ASSEMBLY (Click here)
OK


4.INSPECT SPIRAL CABLE SUB-ASSEMBLY

  1. Remove the spiral cable sub-assembly (Click here).

  1. Inspect the spiral cable sub-assembly (Click here).



NG
REPLACE SPIRAL CABLE SUB-ASSEMBLY (Click here)
OK


5.CHECK HARNESS AND CONNECTOR (NAVIGATION RECEIVER ASSEMBLY - SPIRAL CABLE SUB-ASSEMBLY)

  1. Disconnect the N9 navigation receiver assembly connector.

  1. Disconnect the S42 spiral cable sub-assembly connector.

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

    Standard Resistance:
    Tester Connection
    		Condition
    		Specified Condition
    N9-23 (SWG) - S42-4 (EAU)
    		Always
    		Below 1 Ω
    N9-23 (SWG) - Body ground
    		Always
    		10 kΩ or higher


NG
REPAIR OR REPLACE HARNESS OR CONNECTOR
OK

PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE (Click here)  

6.CHECK HARNESS AND CONNECTOR (NAVIGATION RECEIVER ASSEMBLY - BATTERY AND BODY GROUND)


    E178447E76

  1. Disconnect the navigation receiver assembly connector.

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

    Standard Resistance:
    Tester Connection
    		Condition
    		Specified Condition
    N12-7 (GND) - Body ground
    		Always
    		Below 1 Ω

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

    Standard Voltage:
    Tester Connection
    		Switch Condition
    		Specified Condition
    N12-10 (ILL+) - Body ground
    		Light control switch tail or head
    		11 to 14 V
Text in Illustration 
*a
Front view of wire harness connector
(to Navigation Receiver Assembly)


NG
REPAIR OR REPLACE HARNESS OR CONNECTOR
OK

PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE (Click here)