Checking hazard light operation

Check 5550CA

Hazard warning lights control signal test

Extract the hazard warning lights control from the dashboard

With the button released, check that the circuit between pins 2 and 3 of the hazard warning lights control is OPEN

With the button pressed, check that the circuit between pins 2 and 3 of the hazard warning lights control is CLOSED

Luminous diode internal operating circuit test

Connect pin 1 to the positive battery terminal with a voltage of 12V

Connect pin 2 to the negative battery terminal

Check that the diode lights up dimly.

Connect pin 4 to the positive battery terminal with a voltage of 12V.

Connect pin 2 to the negative battery terminal

Check that the diode lights up more brightly.