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 NODULE RECEIVER ASSEMBLY - SPIRAL CABLE SUB-ASSEMBLY AND BODY GROUND)
CHECK HARNESS AND CONNECTOR (ILLUMINATION SIGNAL CIRCUIT)
AUDIO AND VISUAL SYSTEM (w/ Navigation System) - Illumination Circuit
DESCRIPTION
Power is supplied to the multi-media module receiver assembly and steering pad switch assembly illumination when the light control switch is in the tail or head position.
WIRING DIAGRAM
INSPECTION PROCEDURE
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 ().
Inspect the fuse for circuits related to this system before performing the following inspection procedure.
Check if the illumination for the multi-media module receiver 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-media module receiver assembly. | B |
| No illumination comes on (multi-media module receiver assembly, steering pad switch, hazard switch, heater control switch, etc.). | C |
| 2.CHECK HARNESS AND CONNECTOR (ILLUMINATION SIGNAL) |
Disconnect the spiral cable sub-assembly connector.
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) |
| | REPAIR OR REPLACE HARNESS OR CONNECTOR |
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| 3.INSPECT STEERING PAD SWITCH ASSEMBLY |
Remove the steering pad switch assembly ().
Inspect the steering pad switch assembly ().
| | REPLACE STEERING PAD SWITCH ASSEMBLY ()
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| 4.INSPECT SPIRAL CABLE SUB-ASSEMBLY |
Remove the spiral cable sub-assembly ().
Inspect the spiral cable sub-assembly ().
| | REPLACE SPIRAL CABLE SUB-ASSEMBLY ()
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| 5.CHECK HARNESS AND CONNECTOR (MULTI-MEDIA NODULE RECEIVER ASSEMBLY - SPIRAL CABLE SUB-ASSEMBLY AND BODY GROUND) |
Disconnect the F77 multi-media module receiver assembly connector.
Disconnect the E12 spiral cable sub-assembly connector.
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 |
| F77-14 (ILL+) - Body ground | Always | 10 kΩ or higher |
| F77-32 (SWG) - Body ground | Always | 10 kΩ or higher |
| | REPAIR OR REPLACE HARNESS OR CONNECTOR |
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| OK | |
| |
| PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE ()
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| 6.CHECK HARNESS AND CONNECTOR (ILLUMINATION SIGNAL CIRCUIT) |
Disconnect the multi-media module receiver assembly connector.
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 |
Text in Illustration| *a | Front view of wire harness connector
(to Multi-media Module Receiver Assembly) |
| | REPAIR OR REPLACE HARNESS OR CONNECTOR |
|
|
| OK | |
| |
| PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE ()
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