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Pinpoint Test B: Most Network Initial Tests

B1: MOST NETWORK INITIAL TEST 1 

NOTE: When connecting the MOST tester, use the 2+0 or 2+4 socket as appropriate and set the connector selector switch to match the socket in use
  1. Switch on the audio/video system
  2. Disconnect the MOST harness connector from the power amplifier
  3. Set the MOST tester power switch to 'on'
  4. Connect the MOST harness connector to the MOST tester
  5. Check the touch screen display for indication of a MOST network fault

    6. YES:  The disconnected control module is causing the MOST network fault. GO to Pinpoint Test E .

    NO:  The disconnected control module is not causing MOST network fault. GO to B2  .

B2: MOST NETWORK INITIAL TEST 2 

  1. Check the MOST tester beep/LED

    2. Did the MOST tester emit a tone or illuminate the LED? 

    YES:  MOST signal received. The MOST network fault is located downstream of the MOST tester. GO to Pinpoint Test C .

    NO:  MOST signal not received. The MOST network fault is located upstream of the MOST tester. Disconnect the MOST harness connector from the MOST tester and reconnect it to the control module. GO to Pinpoint Test D .

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