Mute Signal Circuit between Stereo Component Tuner Assembly and Television Display Assembly: Procedure

1. Disconnect the L18 stereo component tuner assembly connector.
   Fig 1: Checking Stereo Component Tuner Assembly

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

   Standard Voltage

   Tester Connection	Condition	Specified Condition
   L18-15 (MUTE2) - Body ground	Turn the ignition switch to ACC, disc player assembly is playing → Changing modes	3.5 V or higher → Below 1 V

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   *1	Front view of wire harness connector (to Stereo Component Tuner Assembly)

NG → See step   2 

OK → See step   3 

1. Disconnect the L18 stereo component tuner assembly connector.
2. Disconnect the U1 television display assembly connector.
3. Measure the resistance according to the value(s) in the table below.

   Standard Resistance

   Tester Connection	Condition	Specified Condition
   L18-15 (MUTE2) - U1-11 (MUTE)	Always	Below 1 Ω
   L18-15 (MUTE2) - Body ground	Always	10 kΩ or higher

NG → REPAIR OR REPLACE HARNESS OR CONNECTOR 

OK → See step   4