Block 14 (DC)

A 12VDC battery provides potential for what 3 things

• SM, S3, S4

• S3, CB4, H6

• SM, H5, S4

• SM, S3, H4

CB4 is a ___ AMP circuit breaker that protects the ____ From excessive current

• 30 AMP & Engine Control Circuits

• 25 AMP & Ignition System (IS)

• 15 AMP & Heater Control Unit

• 20 AMP & Burner Control Unit

If CB4 is ___ the engine will not start

• Open

• Reset

• Closed

• Locked

S3 is a 4 position switch, what are the 4 positions

• Preheat, Off, On and Start

• Preheat, Idle, Run, and Stop

• Off, Preheat, Operate, and Cool Down

• Off, Standby, Run, and Start

S4 turns on what 2 lights

• Panel Light (H5) & Engine Compartment Light (H6)

• Preheat Light (H4) & Charge Light (H3)

• Engine Compartment Light (H6) & Preheat Light (H4)

• Both Fog Lights

The preheater is used when the ambient air temperature is ?

• Below 32°F

• Above 32°F

• Below 24°F

• Below 0°F

Hold S3 (Ign. Switch) in the "Preheat" position for ___

• 30 seconds

• 15 seconds

• 45 seconds

• 60 seconds

The preheater will warm the air in the ____

• engine intake manifold

• burner assembly housing

• combustion air chamber

• heat exchanger inlet

S3 in the ON position sends potential to ?

• H4

• CR

• PRE

• G2

Charge Light (H3) will illuminate when

• Alternator output is low

• Batteries aren’t charging

• Voltage regulator malfunctions

• Battery connections are loose