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Diagnosis Procedure
1.CHECK COMMUNICATION SIGNAL
  1. Ignition switch OFF.
  2. Disconnect sunshade motor assembly connector.
  3. Ignition switch ON.
  4. Check signal between sunshade motor assembly harness connector and ground with oscilloscope.
    (+)(–)Signal
    Sunshade motor assembly
    ConnectorTerminal
    R57Ground
Is the inspection result normal?
Replace sunshade motor assembly. Refer to Removal and Installation.
 
2.CHECK COMMUNICATION SIGNAL CIRCUIT
  1. Ignition switch OFF.
  2. Disconnect sunroof motor assembly connector.
  3. Check continuity between sunroof motor assembly harness connector and sunshade motor assembly harness connector.
    Sunroof motor assemblySunshade motor assemblyContinuity
    ConnectorTerminalConnectorTerminal
    R47R57Existed
  4. Check continuity between sunshade motor assembly harness connector and ground.
    Sunshade motor assembly—Continuity
    ConnectorTerminal
    R57GroundNot existed
Is the inspection result normal?
Replace sunroof motor assembly. Refer to Removal and Installation.
Repair or replace harness.