TB 9-2320-360-13&P-1
A/C BLOWER DOES NOT OPERATE (LOW, MEDIUM, AND/OR HIGH) - CONTINUED.
6.
KNOWN INFO
WARNING
Read WARNING on
A/C switch harness control switch
page 0016 00-9.
connector OK.
Power to A/C control switch OK.
Are 22 to 28 vdc measured on
A/C switch harness black wire OK.
A/C blower black wire OK.
wire RED #1 at A/C switch
A/C blower OK.
harness evaporator
TEST OPTIONS
A/C blower orange wire OK.
connector when A/C control
Voltage test.
A/C evaporator harness orange
switch is set to low blower
wire OK.
speed position?
A/C switch harness orange wire
REASON FOR QUESTION
OK.
If 22 to 28 vdc is not measured, A/
A/C evaporator harness yellow
C blower will not operate at low
wire OK.
speed.
A/C switch harness yellow wire
OK.
Go to Step 8
NO
POSSIBLE PROBLEMS
of this fault.
A/C control switch faulty.
A/C switch harness wire RED #1
YES
faulty.
A/C blower resistor faulty.
A/C evaporator harness wire RED
#1 faulty.
7.
KNOWN INFO
TEST OPTIONS
WARNING
Read WARNING on
A/C switch harness control switch
Continuity Test.
page 0016 00-9.
connector OK.
Power to A/C control switch OK.
REASON FOR QUESTION
A/C switch harness black wire OK.
Is continuity measured on
If continuity is measured, A/C
A/C blower black wire OK.
wire RED #1 from A/C
blower resistor is faulty. If not, A/
A/C blower OK.
evaporator harness switch
C evaporator harness wire RED
A/C blower orange wire OK.
harness connector to A/C
#1 is faulty.
A/C evaporator harness orange
blower resistor?
wire OK.
A/C switch harness orange wire
OK.
A/C evaporator harness yellow
Repair A/C evaporator
wire OK.
harness wire RED #1 (See
A/C switch harness yellow wire
WP 0057 00, Fig j) or
OK.
replace evaporator harness
NO
A/C control switch OK.
(WP 0027 00). Verify repair,
A/C switch harness wire RED #1
go to Step 18 of this fault.
OK.
POSSIBLE PROBLEMS
YES
A/C blower resistor faulty.
A/C evaporator harness wire RED
Replace A/C blower
#1 faulty.
resistor (WP 0023 00).
Verify repair, go to
Step 18 of this fault.
0016 00-8