TB 9-2320-360-13&P-1
A/C BLOWER DOES NOT OPERATE (LOW, MEDIUM, AND/OR HIGH) - CONTINUED.
10.
KNOWN INFO
WARNING
Read WARNING on
A/C switch harness control switch
page 0016 00-13.
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.
yellow wire at A/C switch
TEST OPTIONS
A/C blower OK.
harness evaporator
Voltage Test.
A/C blower orange wire OK.
connector, when A/C control
A/C evaporator harness orange
switch is set to the medium
REASON FOR QUESTION
wire OK.
blower speed position?
A/C switch harness orange wire
If 22 to 28 vdc is measured, A/C
OK.
evaporator harness yellow wire is
A/C switch harness wire RED #1
faulty.
OK.
A/C evaporator harness wire RED
#1 OK.
Go to Step 11 of
NO
A/C blower resistor OK.
this fault.
POSSIBLE PROBLEMS
A/C evaporator harness yellow
YES
wire faulty.
Repair A/C evaporator
A/C switch harness yellow wire
harness yellow wire
faulty.
(See WP 0057 00, Fig
A/C control switch faulty.
j) or replace evaporator
harness (WP 0027 00).
Verify repair, go to
Step 18 of this fault.
KNOWN INFO
TEST OPTIONS
11.
WARNING
A/C switch harness control switch
Continuity Test.
Read WARNING on
page 0016 00-13.
connector OK.
Power to A/C control switch OK.
REASON FOR QUESTION
A/C switch harness black wire OK.
Is continuity measured
If continuity is measured, A/C
A/C blower black wire OK.
across A/C control switch
switch harness yellow wire is
A/C blower OK.
medium blower speed
faulty. If not, A/C control switch is
A/C blower orange wire OK.
contacts, when A/C control
faulty.
A/C evaporator harness orange
switch is set to medium
wire OK.
blower speed position?
A/C switch harness orange wire
OK.
A/C switch harness wire RED #1
OK.
A/C evaporator harness wire RED
Replace A/C control
#1 OK.
switch (WP 0021 00).
NO
A/C blower resistor OK.
Verify repair, go to
A/C evaporator harness yellow
Step 18 of this fault.
wire OK.
POSSIBLE PROBLEMS
YES
A/C switch harness yellow wire
Repair A/C switch
faulty.
harness yellow wire
A/C control switch faulty.
(See WP 0057 00, Fig j).
Verify repair, go to Step
18 of this fault.
0016 00-12