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Check Hazard Light Operation

WARNING: This page is about a different car, the 2006 Subaru Impreza. However, it is still accessible from the selected car via links, so may be relevant.
CHECK HAZARD LIGHT OPERATION

Step Check Yes No
1 CHECK HAZARD LIGHT OPERATION. 
Check the hazard light blinks when hazard switch is turned ON.		 Does the hazard light blink? Go to step 2.  Check the hazard light circuit.
2 CHECK KEYLESS ENTRY CONTROL UNIT OUTPUT SIGNAL. 
  1. Remove the key from ignition switch.
  2. Open the driver's window, and then close all doors and rear gate.
  3. Lock all doors with the transmitter or door lock switch to arm the security system.
  4. Unlock all doors with the door lock switch.
  5. Measure the voltage between the keyless entry control unit harness connector terminal and chassis ground when any door is open.

    Connector & terminal 

    (B176) No. 14 - Chassis ground: 

 Is the voltage 1 - 4 V? Check the harness for open or short between keyless entry control unit and turn signal lights. Replace the keyless entry control unit.
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