Question about Ford F-350
Where is the flasher relay on a ford 2008 superduty?
It doesn't actually have one this function is incorporated into the smart junction box.
The SJB monitors the multifunction switch position by sending multiple voltage reference signals to the multifunction switch. When the multifunction switch is in the LH or RH TURN positions, or the hazard lamp switch is pressed, that input signal is routed to ground.
When the SJB receives a request for a turn signal or the hazard lamps, the SJB supplies on/off voltage to the appropriate turn lamps.
The timed on/off cycle is determined by the SJB and is set to flash approximately 80 times per minute if both the front and rear turn lamps operate correctly. If an individual turn signal lamp is inoperative, the SJB fast flashes the remaining turn lamp approximately 160 times per minute to indicate to the driver of a bulb outage.
The SJB bulb outage is configurable and can be turned off for the rear lamps. This is to accommodate vehicles that have been upfitted with rear LED lamps in place of the traditional incandescent bulbs.
Posted on Apr 14, 2009
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Posted on Jan 02, 2017
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