DRAFT
TB 9-2320-364-13&P-1
AC HEATER/EVAPORATOR BLOWER DOES NOT OPERATE IN ALL SPEEDS
(LOW, MEDIUM, AND HIGH) - Continued
WARNING
Remove rings, bracelets, wristwatches, neck chains, and any other jewelry before working around
vehicle. Jewelry can catch on equipment and cause serious injury. Jewelry or tools may short
across electrical circuits or terminals and cause damage to equipment or severe burns or
electrical shock to personnel.
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CONTINUITY TEST
(1) Disconnect AC heater/evaporator blower motor
resistor harness connector from AC heater/
evaporator blower motor resistor (WP 0036).
(2) Set multimeter switch to ohms.
(3) Place positive (+) probe of multimeter on AC heater/
evaporator blower motor resistor harness brown
wire at AC heater/evaporator blower motor resistor
connector.
(4) Place negative (-) probe of multimeter on AC
heater/evaporator blower motor resistor harness
brown wire at fan control switch harness connector,
terminal 2.
(a) If there is no continuity, repair AC heater/
evaporator blower motor resistor harness brown
wire (see Appendix A) or replace AC heater/
evaporator blower motor resistor harness
(WP 0036). Verify repair, go to Step 15 of this
fault.
(b) If there is continuity, replace AC heater/
evaporator blower motor resistor (WP 0035).
Verify repair, go to Step 15 of this fault.
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CONTINUITY TEST
(1) Disconnect fan control switch harness brown wire
from fan control switch (WP 0031).
(2) Set multimeter switch to ohms.
(3) Place positive (+) probe of multimeter on fan control
switch harness brown wire at AC heater/evaporator
blower resistor harness connector, terminal 2.
(4) Place negative (-) probe of multimeter on fan control
switch harness brown wire at fan control switch.
(a) If there is no continuity, repair fan control switch
harness brown wire (see Appendix A) or
replace fan control switch harness (WP 0031).
Verify repair, go to Step 15 of this fault.
(b) If there is continuity, replace fan control switch
(WP 0031). Verify repair, go to Step 15 of this
fault.
PLSAC168
