B3634
DTC B3634The HUD detects that the HUD dimming signal circuit is low for greater than 15 seconds.
CIRCUIT DESCRIPTION
The HUD monitors the switch signal circuits in order to perform various functions. The HUD switch contains 3 active low momentary switches and a variable resistor. The HUD detects a switch activation when the signal circuit is active.
CONDITIONS FOR RUNNING THE DTC
The ignition is ON.
CONDITIONS FOR SETTING THE DTC
The HUD detects that the HUD dimming signal circuit is low for greater than 15 seconds.
ACTION TAKEN WHEN THE DTC SETS
The HUD ignores the malfunctioning switch circuit.
CONDITIONS FOR CLEARING THE DTC
- The current DTC becomes history when the fault is no longer present.
- The history DTC clears after 40 malfunction free ignition cycles.
- The HUD receives a clear code command from the scan tool.
TEST
