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Audio System: Inspection

w/o Power amplifier type:
CHECK RADIO RECEIVER ASSEMBLY

Check the terminal of the receiver.

Fig 1: Identifying Connector Terminals Of Radio Receiver W/O Power Amplifier
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

Fig 2: Connector Terminal Reference Chart
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
w/ Power amplifier type:
CHECK RADIO RECEIVER ASSEMBLY

Check the terminal of the receiver.

Fig 3: Identifying Connector Terminals Of Radio Receive W/Power Amplifier
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

Fig 4: Connector Terminal Reference Chart
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
w/ Power amplifier type:
CHECK POWER AMPLIFIER

Check the terminal of the amplifier.

Fig 5: Identifying Connector Terminal - W/ Power Amplifier Type
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

Fig 6: Connector Terminal Reference Chart
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

INSPECT STEERING PAD SWITCH

Check the resistance of the steering pad switch.

Fig 7: Inspecting Steering Pad Switch

G02641050

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

TESTER CONNECTION SPECIFIED CONDITION

Tester Connection	Condition	Specified Condition
AU1 - EAU	No switch pushed	Approx. 100 kΩ
AU1 - EAU	SEEK + switch pushed	Approx. 0Ω
AU1 - EAU	SEEK - switch pushed	Approx. 0.3Ω
AU1 - EAU	VOL + switch pushed	Approx. 1 kΩ
AU1 - EAU	VOL - switch pushed	Approx. 3.2 kΩ
AU2 - EAU	No switch pushed	Approx. 100 kΩ
AU2 - EAU	MODE switch pushed	Approx. 0 Ω

If the resistance is not as specified, replace the switch.