Turn Signal Lamps

With the ignition switch in RUN, BULB TEST or START position voltage is applied through the T/SIG Fuse through circuit 539 to the normally closed pole of the turn switch in the turn signal switch assembly then to the hazard lamp/turn signal flasher through circuit 1508 then back to the turn signal switch through circuit 16.

With the turn signal switch in the LEFT TURN position, voltage is applied from the turn signal switch through circuit 1414 to the DRL control module and then through circuit 14 to the turn filaments of the LF park/turn lamps. Voltage is also applied through circuit 18 to the LR turn lamp, LF side marker and the LH turn indicator. The lamps flash on and off as current flow heats up the timing element in the hazard lamp/turn signal flasher, and causing it to continuously open and close the circuit. The RIGHT TURN position works in a similar way through circuit 1415 and circuit 19 to the RH turn lamps.

With park lamps and turn lamps on, voltage is applied to both terminals of the front side marker lamps causing them to be off. When the turn lamps are off, voltage is applied to only one terminal of the side marker lamp causing it to flash. The side marker and turn lamps continue to flash on and off, until the turn switch is turned to OFF.