nsxb22057a.pdf

Test
1. Connect battery power to the No. 1 terminal of the
air mix control motor, then connect ground to the
No. 2 terminal; the air mix control motor should
run, and stop at HOT,
If it doesn’t, reverse the connections; the air mix
control motor should run, and stop at COOL.
NOTE: If the air mix control motor does not run,
remove it, and check the air mix control linkage and
doors for smooth movement. If the air mix control
linkage and doors move smoothly, replace the air
mix control motor.
2. Measure resistance between the No. 3 terminal and
No. 5 terminal; it should be approx. 10 k .
3. • Measure resistance between the No. 3 terminal and
No. 4 terminal; if should be approx. 0.6 k at COOL
and approx. 9.4 k at HOT.
Mode Control Motor
Replacement
1. Remove the three screws and mode control motor.
MODE CONTROL
MOTOR
2. Install the mode control motor in the reverse order
of removal. Then apply battery voltage (see page
22-58) and watch the doors
move.
Make sura that the HEAT and DEF doors moves
smoothly without binding.
Make sure the motor doesn’t pull the HEAT and
DEF doors too far.