 |
|||
|
|
|||
|
Page Title:
AC HEATER/EVAPORATOR BLOWER DOES NOT OPERATE IN ALL SPEEDS (LOW, MEDIUM, AND HIGH) - continued |
|
||
| ||||||||||
|
|
 DRAFT
TB 9-2320-364-13&P-1
AC HEATER/EVAPORATOR BLOWER DOES NOT OPERATE IN ALL SPEEDS
(LOW, MEDIUM, AND HIGH) - Continued
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
WARNING
6.
KNOWN INFO
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
Read WARNING on
Fan control switch, fan control switch
TEST OPTIONS
harness, and AC heater/evaporator blower
resistor harness connections OK.
Voltage test.
Are 22 to 28 vdc measured on
AC heater/evaporator blower operates in at
red wire at fan control switch
least one speed.
harness connector,
REASON FOR QUESTION
AC heater/evaporator blower resistor harness
terminal 1, when fan control
orange wire OK.
If 22 to 28 vdc are not
switch is in the low speed
measured, AC heater/
Fan control switch harness orange wire OK.
position?
evaporator blower will not
AC heater/evaporator blower resistor harness
operate at low speed.
brown wire OK.
Fan control switch harness brown wire OK.
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
POSSIBLE PROBLEMS
AC heater/evaporator blower resistor harness
Go to Step 8 of this
red wire faulty.
NO
fault.
Fan control switch harness red wire faulty.
AC heater/evaporator blower resistor faulty.
YES
Fan control switch faulty.
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
WARNING
7.
KNOWN INFO
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
Read WARNING on
TEST OPTIONS
Fan control switch, fan control switch
harness, and AC heater/evaporator blower
Continuity test.
resistor harness connections OK.
Is continuity measured
AC heater/evaporator blower operates in at
across AC heater/evaporator
REASON FOR QUESTION
least one speed.
blower motor resistor
AC heater/evaporator blower resistor harness
If continuity is measured, AC
harness red wire?
orange wire OK.
heater/evaporator blower
Fan control switch harness orange wire OK.
motor resistor is faulty. If
not, AC heater/evaporator
AC heater/evaporator blower resistor harness
blower motor resistor
brown wire OK.
harness red wire is faulty.
Fan control switch harness brown wire OK.
Repair AC heater/
Fan control switch harness red wire OK.
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
evaporator blower
Fan control switch OK.
NO
motor resistor harness
red wire (see
POSSIBLE PROBLEMS
Appendix A) or replace
AC heater/evaporator
AC heater/evaporator blower resistor harness
YES
blower motor resistor
red wire faulty.
harness (WP 0036).
AC heater/evaporator blower resistor faulty.
Verify repair, go to
Step 15 of this fault.
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
Replace AC heater/
evaporator blower motor
resistor (WP 0035). Verify
repair, go to Step 15 of this
fault.
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
0011-8
|
|
Privacy Statement - Press Release - Copyright Information. - Contact Us |
Click
here for thousands of PDF manuals