Inspection Procedure

WARNING: This page is about a different car, the 2004 Toyota Camry. However, it is still accessible from the selected car via links, so may be relevant.

INSPECT STEREO COMPONENT AMPLIFIER ASSY

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

Standard:

TERMINALS VOLTAGE

Tester connection	Condition	Specification
MUTE - Body ground	Turn ignition switch to ACC, Audio system is playing --> Changing	Above 3.5 V --> Below 1 V

Fig 1: Identifying Stereo Component Amplifier Assy Connector

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

NG: Go to step 2
OK: PROCEED TO NEXT CIRCUIT INSPECTION SHOWN IN PROBLEM SYMPTOMS TABLE (see PROBLEM SYMPTOMS TABLE )

CHECK HARNESS AND CONNECTOR (RADIO AND NAVIGATION ASSY - STEREO COMPONENT AMPLIFIER ASSY)

Disconnect the connectors from the radio and navigation assy R4 and stereo component amplifier assy S13.

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

Standard:

TERMINALS RESISTANCE

Tester connection	Condition	Specification
MUTE (R4) - MUTE (S13)	Always	Below 1 Ω
MUTE (R4 or S13) - Body ground	Always	10 kΩ or higher

Fig 2: Disconnecting Connectors From Radio And Navigation Assy R4

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

Fig 3: Disconnecting Connectors From Stereo Component Amplifier Assy S13

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

NG: REPAIR OR REPLACE HARNESS OR CONNECTOR
OK: Go to next step.

INSPECT RADIO AND NAVIGATION ASSY

Connect the radio and navigation assy connector R4.

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

Standard:

TERMINALS VOLTAGE

Tester connection	Condition	Specification
MUTE - Body ground	Turn ignition switch to ACC	Above 3.5 V

Fig 4: Connecting Radio And Navigation Assy Connector R4

NG: REPLACE STEREO COMPONENT AMPLIFIER ASSY (SEE REPLACEMENT )
OK: REPLACE RADIO AND NAVIGATION ASSY (SEE REPLACEMENT )