Inspection Procedure

INSPECT STEREO COMPONENT AMPLIFIER

Measure the voltage according to the value in the table below.

Standard voltage

TESTER CONNECTION SPECIFIED CONDITION CHART

Tester connection	Condition	Specification
MUTE (S14-1) - Body ground	Turn ignition switch to ACC, Audio system is playing → changing	Above 3.5 V → Blow 1 V

NG: Go to step 2

Fig 1: Inspecting Stereo Component Amplifier

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OK : PROCEED TO NEXT CIRCUIT INSPECTION SHOWN IN PROBLEM SYMPTOMS TABLE

CHECK HARNESS AND CONNECTOR (RADIO RECEIVER - STEREO COMPONENT AMPLIFIER)

Disconnect the radio receiver R16 connector and stereo component amplifier S14 connector.

Fig 2: Disconnecting Radio Receiver R16 Connector
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Measure the resistance according to the values in the table below.

Standard resistance

TESTER CONNECTION SPECIFIED CONDITION CHART

Tester connection	Condition	Specified condition
MUTE (R16-7) - MUTE (S14-1)	Always	Below 1 Ω
MUTE (R16-7) - Body ground	Always	10 kΩ or higher

NG: REPAIR OR REPLACE HARNESS OR CONNECTOR

Fig 3: Disconnecting Stereo Component Amplifier S14 Connector

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

OK : Go to next step.

INSPECT RADIO RECEIVER

Fig 4: Inspecting Radio Receiver

Measure the voltage according to the value in the table below.

Standard voltage

TESTER CONNECTION SPECIFIED CONDITION CHART

Tester connection	Condition	Specification
MUTE (R16-7) - Body ground	Turn ignition switch to ACC	Above 3.5 V

NG: REPLACE STEREO COMPONENT AMPLIFIER

OK : REPLACE RADIO RECEIVER