Circuit 1200E

FUNCTION: This circuit provides ground for the high beam telltale and the DRL logic when the high beam headlamps have been activated by the headlamp switch (HI or Flash-To-Pass). This ground input will deactivate the DRL function and On telltale and the DRL logic will turn On the hi beam telltale for as long as the High Beam headlamps are On.

Check the HI Beam telltale ground circuit for opens or shorts to ground. (Check telltale power circuit first. If the hazard lamps work the power circuit is 0k.)

With headlamp switch in HI beam position the Hi beam telltale should be On. If the telltale is not On the circuit is open or the headlamp switch, I/P cluster or bulb is at fault. Using a fused jumper, jumper I/P cluster cavity N to E (circuit 350T). If the telltale comes On the cluster and bulb are Ok. If the telltale does not come On, check the bulb, and if bulb Ok, proceed with internal resistance checks for speedometer.

With headlamp switch in LO beam position the Hi beam telltale should be Off. If the telltale is On then circuit 1200 is shorted to ground or the cluster is at fault. Check circuit for short to ground and if Ok, proceed with internal resistance checks for speedometer.