Electrical and ATC
What is the first thing to look for when fuse is blown? - answer find the problem
what components can assist in anti-dieseling? - answeranti-dieseling relay, compressor
clutch, compressor
what are the most common causes of blower motor failer? - answer worn bushing,
brushes, defective internal wiring
what is the purpose of a field type compressor clutch? - answerdisengage compressor
when its not needed
how does the ATC system know when the desired cabin temp has been reached? -
answerin car temp sensor
why does the A/C system use low pressure and / or high pressure cut out switches? -
answerlow psi and/ or high psi cut out switches are safety systems
in what way can the power steering pressure switch affect the A/C system? - answerthe
PSPS can cause the compressor clutch to disengage during parking
what is the purpose of the blend door - answercontrol temp
what do we use besides the switch to control the blower motor speed? - answerpower
module
what is the difference between ATC and SATC? - answerATC-full automatic/ SATC-
semi-automatic
why is the compressor clutch clearance or air gap important? - answertoo wide of a air
gap- clutch will slip/ too narrow of a gap- cause drag
At what ambient temp does the ATC system prevent the compressor from engaging? -
answerbelow 40F
At what engine coolant temp does the ATC system allow the blower motor to run? -
answerwhen engine coolant reaches 120F the ATC will allow blower motor to operate in
heat mode
where should we take our ambient temp reading? - answer2 to 6 inch in from of
condenser with fan running
What is the first thing to look for when fuse is blown? - answer find the problem
what components can assist in anti-dieseling? - answeranti-dieseling relay, compressor
clutch, compressor
what are the most common causes of blower motor failer? - answer worn bushing,
brushes, defective internal wiring
what is the purpose of a field type compressor clutch? - answerdisengage compressor
when its not needed
how does the ATC system know when the desired cabin temp has been reached? -
answerin car temp sensor
why does the A/C system use low pressure and / or high pressure cut out switches? -
answerlow psi and/ or high psi cut out switches are safety systems
in what way can the power steering pressure switch affect the A/C system? - answerthe
PSPS can cause the compressor clutch to disengage during parking
what is the purpose of the blend door - answercontrol temp
what do we use besides the switch to control the blower motor speed? - answerpower
module
what is the difference between ATC and SATC? - answerATC-full automatic/ SATC-
semi-automatic
why is the compressor clutch clearance or air gap important? - answertoo wide of a air
gap- clutch will slip/ too narrow of a gap- cause drag
At what ambient temp does the ATC system prevent the compressor from engaging? -
answerbelow 40F
At what engine coolant temp does the ATC system allow the blower motor to run? -
answerwhen engine coolant reaches 120F the ATC will allow blower motor to operate in
heat mode
where should we take our ambient temp reading? - answer2 to 6 inch in from of
condenser with fan running
