DESCRIPTION
The DCM (telematics transceiver) sends a mute signal to the stereo component amplifier assembly.
The stereo component amplifier assembly controls the volume according to the mute signal from the DCM (telematics transceiver).
WIRING DIAGRAM
CAUTION / NOTICE / HINT
NOTICE:
Click here
Click here
PROCEDURE
1. | INSPECT DCM (TELEMATICS TRANSCEIVER) |
(a) Measure the voltage according to the value(s) in the table below. Standard Voltage:
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OK | ![]() | PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE |
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2. | CHECK HARNESS AND CONNECTOR (STEREO COMPONENT AMPLIFIER ASSEMBLY - DCM (TELEMATICS TRANSCEIVER)) |
(a) Disconnect the J66 stereo component amplifier assembly connector.
(b) Disconnect the J157 DCM (telematics transceiver) connector.
(c) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
Tester Connection | Condition | Specified Condition |
---|---|---|
J66-2 (TMUT) - J157-14 (MUTE) | Always | Below 1 Ω |
J66-2 (TMUT) or J157-14 (MUTE) - Body ground | Always | 10 kΩ or higher |
NG | ![]() | REPAIR OR REPLACE HARNESS AND CONNECTOR |
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3. | INSPECT STEREO COMPONENT AMPLIFIER ASSEMBLY |
(a) Reconnect the J66 stereo component amplifier assembly connector.
(b) Measure the voltage according to the value(s) in the table below. Standard Voltage:
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OK | ![]() | REPLACE DCM (TELEMATICS TRANSCEIVER) |
NG | ![]() | REPLACE STEREO COMPONENT AMPLIFIER ASSEMBLY |
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