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Diagnosis Procedure
1.CHECK REAR SEAT HEATER LH GROUND CIRCUIT (OPEN)
  1. Ignition switch OFF.
  2. Disconnect rear seat heater LH connector.
  3. Check continuity between rear seat heater LH harness connector and ground.
    Rear seat heater LHーContinuity
    ConnectorTerminal
    B4054GroundExisted
Is the inspection result normal?
Repair the harness or connector.
 
2.CHECK FRONT SEATBACK HEATER LH CIRCUIT (OPEN)
Check continuity between rear seatback heater LH harness connector and rear seat heater LH harness connector.
Rear seatback heater LHRear seat heater LHContinuity
ConnectorTerminalConnectorTerminal
B4122B4204Existed
Is the inspection result normal?
Replace seat cushion pad. Refer to Disassembly and Assembly.
 
3.CHECK REAR SEATBACK HEATER LH GROUND CIRCUIT (OPEN)
  1. Disconnect rear seatback heater LH connector.
  2. Check continuity between rear seatback heater LH harness connector and rear seat heater LH harness connector.
    Rear seatback heater LHRear seat heater LHContinuity
    ConnectorTerminalConnectorTerminal
    B4121B4204Existed
Is the inspection result normal?
Replace seatback pad. Refer to Disassembly and Assembly.
Replace seat cushion pad. Refer to Disassembly and Assembly.