AUDIO AND VISUAL SYSTEM (for Radio Receiver Type) > Illumination Circuit |
for Preparation Click here
DESCRIPTION
Power is supplied to the radio receiver assembly and steering pad switch assembly illumination when the light control switch is in the TAIL or HEAD position.WIRING DIAGRAM
INSPECTION PROCEDURE
- CAUTION:
- The vehicle is equipped with an SRS (Supplemental Restraint System) which includes components such as airbags. Before servicing (including removal or installation of parts), be sure to read the precautionary notice for the SRS (Click here).
1.CHECK ILLUMINATION |
Check if the illumination for the radio receiver assembly, steering pad switch assembly, glove box or other parts (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 radio receiver assembly. B No illumination comes on (radio receiver assembly, hazard switch, glove box, etc.). C
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A | |
2.CHECK HARNESS AND CONNECTOR (SPIRAL CABLE - BATTERY) |
Disconnect the G12 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 S30-12 (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)
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OK | |
3.INSPECT STEERING PAD SWITCH ASSEMBLY |
Remove the steering pad switch assembly (Click here).
Text in Illustration *A w/ Multi-information Display - -
Connect the positive (+) lead of the battery to terminal 5 (IL+2) and the negative (-) lead to terminal 8 (EAU) of the steering pad switch assembly connector.
Check if the illumination for the steering pad switch assembly comes on.
- OK:
- Illumination for the steering pad switch assembly comes on.
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OK | |
4.INSPECT SPIRAL CABLE SUB-ASSEMBLY |
Remove the spiral cable sub-assembly (Click here).
Measure the resistance according to the value(s) in the table below.
- Standard Resistance:
Tester Connection Condition Specified Condition 8 (EAU) - 4 (EAU) Spiral cable is turned 2.5 rotations counterclockwise Below 1 Ω Spiral cable is centered Spiral cable is turned 2.5 rotations clockwise 5 (IL+2) - 12 (IL+2) Spiral cable is turned 2.5 rotations counterclockwise Spiral cable is centered Spiral cable is turned 2.5 rotations clockwise
Text in Illustration *a Steering Pad Switch Side *b Vehicle Side - CAUTION:
- The spiral cable is an important part of the SRS airbag system. Incorrect removal or installation of the spiral cable may prevent the airbag from deploying. Be sure to read the Precaution for the SRS (Click here).
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OK | |
5.CHECK HARNESS AND CONNECTOR (RADIO RECEIVER - SPIRAL CABLE) |
Disconnect the R27 radio receiver assembly connector.
Disconnect the S30 spiral cable sub-assembly connector.
Measure the resistance according to the value(s) in the table below.
- Standard Resistance:
Tester Connection Condition Specified Condition R27-23 (SWG) - S30-4 (EAU) Always Below 1 Ω R27-23 (SWG) - Body ground Always 10 kΩ or higher
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OK | ||
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6.CHECK HARNESS AND CONNECTOR (RADIO RECEIVER - BATTERY AND BODY GROUND) |
Disconnect the G5 radio receiver assembly connector.
Measure the resistance according to the value(s) in the table below.
- Standard Resistance:
Tester Connection Condition Specified Condition R2-7 (GND) - Body ground Always Below 1 Ω
Measure the voltage according to the value(s) in the table below.
- Standard Voltage:
Tester Connection Switch Condition Specified Condition R2-7 (GND) - Body ground Light control switch TAIL or HEAD 11 to 14 V
*a | Front view of wire harness connector (to Radio Receiver Assembly) |
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OK | ||
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