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Diagnosis Procedure
1.CHECK LIN COMMUNICATION SIGNAL
  1. Ignition switch OFF.
  2. Disconnect sunshade motor assembly harness connector.
  3. Ignition switch ON.
  4. Check signal between sunshade motor assembly harness connector and ground using an oscilloscope.
    (+)(−)Signal
    Sunshade motor assembly
    ConnectorTerminal
    R59Ground
Is the inspection result normal?
INSPECTION END
.
 
2.CHECK LIN COMMUNICATION CIRCUIT
  1. Ignition switch OFF.
  2. Disconnect BCM connector.
  3. Check continuity between BCM harness connector and sunshade motor assembly harness connector.
    BCMSunshade motor assemblyContinuity
    ConnectorTerminalConnectorTerminal
    M1824R59Existed
Is the inspection result normal?
Replace BCM. Refer to Removal and Installation.
Repair or replace harness.