Navigation System Illumination Circuit

DESCRIPTION

WIRING DIAGRAM

INSPECTION PROCEDURE

CHECK ILLUMINATION

CHECK HARNESS AND CONNECTOR (ILLUMINATION SIGNAL)

INSPECT STEERING PAD SWITCH ASSEMBLY

INSPECT SPIRAL CABLE SUB-ASSEMBLY

CHECK HARNESS AND CONNECTOR (MULTI-MEDIA MODULE RECEIVER ASSEMBLY, MULTI-DISPLAY ASSEMBLY - SPIRAL CABLE SUB-ASSEMBLY)

CHECK HARNESS AND CONNECTOR (MULTI-DISPLAY ASSEMBLY - BATTERY AND BODY GROUND)

CHECK HARNESS AND CONNECTOR (MULTI-MEDIA MODULE RECEIVER ASSEMBLY - BATTERY AND BODY GROUND)

DESCRIPTION

WIRING DIAGRAM

INSPECTION PROCEDURE

NOTICE:

1. 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 precaution for Supplemental Restraint System (Click here).
   
2. Inspect the fuse for circuits related to this system before performing the following inspection procedure.
   

1. Check if the illumination for the multi-media module receiver assembly, multi-display assembly, steering pad switch assembly or others (hazard 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 multi-display assembly.	B
   Illumination comes on for all components except multi-media module receiver assembly.	C
   No illumination comes on (multi-media module receiver assembly, steering pad switch, hazard switch, heater control switch, etc.).	D

1. Disconnect the spiral cable sub-assembly connector.
   

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

   Standard Voltage:

   Tester Connection	Switch Condition	Specified Condition
   E12-12 (IL+2) - Body ground	Light control switch in the tail or head position	11 to 14 V

   Text in Illustration

   *a	Front view of wire harness connector (to Spiral Cable Sub-assembly)

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

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

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

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

1. Disconnect the F77 multi-media module receiver assembly connector.
   

2. Disconnect the F79 multi-display assembly connector.
   

3. Disconnect the E12 spiral cable sub-assembly connector.
   

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

   Standard Resistance:

   Tester Connection	Condition	Specified Condition
   F77-14 (ILL+) - E12-12 (IL+2)	Always	Below 1 Ω
   F77-32 (SWG) - E12-4 (EAU)	Always	Below 1 Ω
   F79-2 (ILL) - E12-12 (IL+2)	Always	Below 1 Ω
   F77-14 (ILL+) - Body ground	Always	10 kΩ or higher
   F77-32 (SWG) - Body ground	Always	10 kΩ or higher
   F79-2 (ILL) - Body ground	Always	10 kΩ or higher

1. Disconnect the multi-display assembly connector.
   

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

   Standard Resistance:

   Tester Connection	Condition	Specified Condition
   F79-14 (ILL-) - Body ground	Always	Below 1 Ω

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

   Standard Voltage:

   Tester Connection	Switch Condition	Specified Condition
   F79-2 (ILL) - Body ground	Light control switch in the tail or head position	11 to 14 V

1. Disconnect the multi-media module receiver assembly connector.
   

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

   Standard Voltage:

   Tester Connection	Switch Condition	Specified Condition
   F77-14 (ILL+) - Body ground	Light control switch in the tail or head position	11 to 14 V

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

   Standard Resistance:

   Tester Connection	Condition	Specified Condition
   F77-13 (ILL-) - Body ground	Always	Below 1 Ω