Sound Signal Circuit between Multi-display Controller and Navigation Assembly: Procedure

1. Disconnect the L62 navigation connector.
   Fig 1: Checking Harness And Connector (Display And Navigation Assembly - Multi-Display Controller)

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2. Disconnect the R32 controller connector.
3. Measure the resistance according to the value(s) in the table below.

   Standard resistance

   Tester Connection	Condition	Specified Condition
   L62-3 (FL+) - R32-3 (L5+)	Always	Below 1 Ω
   L62-4 (FL-) - R32-4 (L5-)
   L62-1 (FR+) - R32-1 (R5+)
   L62-2 (FR-) - R32-2 (R5-)
   L62-5 (SLD1) - R32-5 (SLD5)
   L62-3 (FL+) - Body ground	Always	10 kΩ or higher
   L62-4 (FL-) - Body ground
   L62-1 (FR+) - Body ground
   L62-2 (FR-) - Body ground

NG → REPAIR OR REPLACE HARNESS OR CONNECTOR 

OK: Go to next step 

1. Reconnect the L62 navigation connector.
   Fig 2: Identifying R32 Connector Terminals

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2. Using an oscilloscope, check the signal waveform between each terminal and body ground according to the conditions, as shown in the chart below.

   Signal waveform

   Tester Connection	Condition	Specified Condition
   R32-3 (L5+) - Body ground	Audio sound is being produced	A waveform synchronized with sound is output
   R32-4 (L5-) - Body ground
   R32-1 (R5+) - Body ground
   R32-2 (R5-) - Body ground

NG → See step   4 

OK → See step   3