[Previous][Next]
DTC Diagnosis Procedure
1.CHECK DTC PRIORITY
If DTC U0284 is displayed with another DTC UXXXX, first perform the trouble diagnosis for DTC UXXXX.
Is applicable DTC detected?
Perform diagnosis of applicable. Refer to DTC Index.
.
 
2.CHECK ACTIVE GRILLE SHUTTER POWER SUPPLY
  1. Turn ignition switch OFF.
  2. Disconnect active grille shutter harness connector.
  3. Turn ignition switch ON.
  4. Check the voltage between active grille shutter harness connector and ground as follows.
    +−ConditionVoltage
    (Approx.)
    Active grille shutter
    ConnectorTerminal
    E461GroundIgnition switch: ONBattery voltage
    Ignition switch: OFF0 V
Is the inspection result normal?
.
.
 
3.CHECK ACTIVE GRILLE SHUTTER POWER SUPPLY CIRCUIT
  1. Turn ignition switch OFF
  2. Disconnect IPDM E/R harness connector.
  3. Check the continuity between active grille shutter harness connector and IPDM E/R harness connector.
    Active grille shutterIPDM E/RContinuity
    ConnectorTerminalConnectorTerminal
    E461E1198Existed
Is the inspection result normal?
Perform trouble diagnosis for power supply circuit.
Repair or replace the error-detected parts.
 
4.CHECK ACTIVE GRILLE SHUTTER GROUND CIRCUIT
  1. Turn ignition switch OFF
  2. Check the continuity between active grille shutter harness connector and ground.
    Active grille shutter−Continuity
    ConnectorTerminal
    E464GroundExisted
  3. Also check harness for short to ground and short to power.
Is the inspection result normal?
.
Repair open circuit, short to ground or short to power in harness or connectors.
 
5.CHECK ACTIVE GRILLE SHUTTER INPUT SIGNAL CIRCUIT
  1. Disconnect ECM harness connector.
  2. Check the continuity between ECM harness connector and active grille shutter harness connector.
+–Continuity
ECMActive grille shutter
ConnectorTerminalConnectorTerminal
F5121E463Existed
Is the inspection result normal?
.
Repair or replace the error-detected parts.
 
6.CHECK ACTIVE GRILLE SHUTTER
Check active grille shutter. Refer to Component InspectionComponent Inspection (Active Grille Shutter).
Is the inspection result normal?
INSPECTION END
Replace active grille shutter. Refer to Removal and Installation.