General Information

Tuner/Amplifier

U1004 Temperature Sensor Signal Error in Tuner and Amplifier - General Information

Component Location





General Description

The Tuner &Amplifier converts optical communication signal to electrical communication signal. The temperature sensor of Tuner &Amplifier detects the temperature rising to prevent that be abnormal status.

DTC Description

This code is set when a temperature sensor of Tuner &Amplifier detect that the temperature is over 85 °C, At that time Tuner &Amplifier can be abnormal status. If the temperature is around 85 °C, the fan is running to make the temperature down. After cooling, Tuner &Amplifier become to be normal status under 75 °C.

DTC Detecting Condition





Diagnostic Circuit Diagram





Signal Waveform & Data








FIG.1) Start of wake up line diagnosis test
FIG.2) Result of wake up line diagnosis test