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Diagnosis Procedure
1.CHECK KEYLESS OPERATION REAR OUTER ANTENNA INPUT SIGNAL 1
  1. Turn the power supply mode of the electric motor switch to ON.
  2. Check signal between keyless operation key unit harness connector and ground using oscilloscope.
    (+)(–)ConditionSignal
    (Reference value)
    Keyless operation key unit
    ConnectorTerminal
    M18437GroundWhen the back door request switch is operated with electric motor switch ONWhen keyless operation key is in the antenna detection area
    When keyless operation key is not in the antenna detection area
    38When keyless operation key is in the antenna detection area
    When keyless operation key is not in the antenna detection area
Is the inspection result normal?
Replace keyless operation key unit. Refer to REMOVAL AND INSTALLATION.
.
 
2.CHECK KEYLESS OPERATION REAR OUTER ANTENNA CIRCUIT
  1. Turn the power supply mode of the electric motor switch to OFF.
  2. Disconnect keyless operation key unit connector and keyless operation rear outer antenna connector.
  3. Check continuity between keyless operation key unit harness connector and keyless operation rear outer antenna harness connector.
    Keyless operation key unitKeyless operation rear outer antennaContinuity
    ConnectorTerminalConnectorTerminal
    M18437B762Existed
    381
  4. Check continuity between keyless operation key unit harness connector and ground.
    Keyless operation key unit—Continuity
    ConnectorTerminal
    M18437GroundNot existed
    38
Is the inspection result normal?
.
Repair or replace harness.
 
3.CHECK KEYLESS OPERATION REAR OUTER ANTENNA INPUT SIGNAL 2
  1. Replace keyless operation rear outer antenna. (New antenna or other antenna)
  2. Connect keyless operation key unit and keyless operation rear outer antenna connector.
  3. Turn the power supply mode of the electric motor switch to ON.
  4. Check signal between keyless operation key unit harness connector and ground using oscilloscope.
    (+)(–)ConditionSignal
    (Reference value)
    Keyless operation key unit
    ConnectorTerminal
    M18437GroundWhen the back door request switch is operated with electric motor switch ONWhen keyless operation key is in the antenna detection area
    When keyless operation key is not in the antenna detection area
    38When keyless operation key is in the antenna detection area
    When keyless operation key is not in the antenna detection area
Is the inspection result normal?
Replace keyless operation rear outer antenna. Refer to REMOVAL AND INSTALLATION.
Replace keyless operation key unit. Refer to REMOVAL AND INSTALLATION.