Audio Visual. Audio And Visual System Illumination Circuit

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 supplemental restraint system (CAMRY_ACV40 RM000000KT1054X.html).

1.CHECK ILLUMINATION

Check if the illumination for the radio receiver, steering pad switch, glove box 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.	A
Illumination comes on for all components except radio receiver.	B
No illumination comes on (radio receiver, hazard switch, glove box, etc.).	C

Go to step 6

GO TO LIGHTING SYSTEM

A

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

Disconnect the spiral cable connector.

Measure the voltage according to the value(s) in the table below.
Standard voltage:
Tester connection
Condition
Specified condition
IL+2 - Body ground
Light control SW TAIL or HEAD
10 to 14 V

REPAIR OR REPLACE HARNESS OR CONNECTOR

OK

3.INSPECT STEERING PAD SWITCH ASSEMBLY

Disconnect the steering pad switch connector.

Connect the positive (+) lead to terminal IL+2 and the negative (-) lead to terminal 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.

REPLACE STEERING PAD SWITCH ASSEMBLY

OK

4.INSPECT SPIRAL CABLE

Disconnect the steering pad switch and spiral cable connectors.

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

Standard resistance:

Tester connection	Spiral Cable Position	Specified condition
EAU - EAU	Center	Below 1 Ω
	2.5 rotations to the left
	2.5 rotations to the right
IL+2 - IL+2	Center	Below 1 Ω
	2.5 rotations to the left
	2.5 rotations to the right

NOTICE:

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 pages shown in the brackets below.

HINT:

Removal (CAMRY_ACV40 RM000000UWD030X.html)
Installation (CAMRY_ACV40 RM000000UWA030X.html)

REPLACE SPIRAL CABLE

OK

5.CHECK HARNESS AND CONNECTOR (SPIRAL CABLE - RADIO RECEIVER)

Disconnect the connectors from the radio receiver and spiral cable.

Measure the resistance according to the value(s) in the table below.
Standard resistance:
Tester connection
Condition
Specified condition
SWG - EAU
Always
Below 1 Ω
SWG - Body ground
Always
10 kΩ or higher

REPAIR OR REPLACE HARNESS OR CONNECTOR

PROCEED TO NEXT CIRCUIT INSPECTION SHOWN IN PROBLEM SYMPTOMS TABLE

6.CHECK HARNESS AND CONNECTOR (BATTERY - RADIO RECEIVER)

Disconnect the radio receiver connector.

Measure the voltage according to the value(s) in the table below.
Standard voltage:
Tester connection
Condition
Specified condition
ILL+ - Body ground
Light control switch TAIL or HEAD
10 to 14 V

REPAIR OR REPLACE HARNESS OR CONNECTOR

OK

7.CHECK HARNESS AND CONNECTOR (RADIO RECEIVER - BODY GROUND)

Disconnect the radio receiver connector.

Measure the resistance according to the value(s) in the table below.
Standard resistance:
Tester connection
Condition
Specified condition
ILL- - Body ground
Always
10 kΩ or higher

REPAIR OR REPLACE HARNESS OR CONNECTOR

PROCEED TO NEXT CIRCUIT INSPECTION SHOWN IN PROBLEM SYMPTOMS TABLE

Tester connection	Condition	Specified condition
IL+2 - Body ground	Light control SW TAIL or HEAD	10 to 14 V