Categories
Heating, Ventilation and Air Conditioning

nsxb22058a.pdf

Mode Control Motor
Test
1. Disconnect the mode control motor connector, turn
the ignition switch ON (II), and move the blower
switch to the middle setting.
2. Connect battery power to the No. 1 terminal of the
mode control motor, then connect ground to the No.
2 terminal. The mode control motor should run, and
stop at VENT.
If it doesn’t, reverse the connections; the mode
control motor should run, and stop at DEF.
NOTE: If the mode control motor does not run,
remove it, and check the mode control linkage and
doors for smooth movement. If the mode control
linkage and doors move smoothly, replace the
mode control motor.
3. Plug the connector back into the motor. Operate
the mode switch on the climate control unit to each
mode. Verify that the mode control motor has mov-
ed to the selected position by checking the air flow
for the mode selected.
NOTE: If the motor did not move, turn the ignition
switch OFF, and disconnect the mode control mo-
tor connector. Turn the ignition switch ON (II), then
connect battery power to No. 1 and No. 2 terminals
as shown in step 2. Power the mode control motor
to move the doors to the mode selected.
4. Disconnect the mode control motor connector at
each mode selected and check for continuity bet-
ween the motor terminals according to the table
below.
5. Replace the mode control motor if there is no con-
tinuity for any one mode selected.

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