Honda 2004 Odyssey Service Manual page 1569

Heating/Air Conditioning
Mode Control Motor Test
1. Disconnect the 7P connector from the mode control
motor.
Incorrectly applying power and ground to
the mode control motor will damage it.
Follow the instructions carefully.
2. Connect battery power to the No. 1 terminal of the
mode control motor, and ground the No. 2
terminal; the mode control motor should run
smoothly, and stop at Defrost. If it doesn't, reverse
the connections; the mode control motor should
run smoothly, and stop at Vent. When the mode
control motor stops running, disconnect battery
power immediately.
MODE CONTROL MOTOR
3. If the mode control motor did not run in step 2,
remove it, then check the mode control linkage and
doors for smooth movement.
• If the linkage and doors move smoothly, replace
the mode control motor.
• If the linkage or doors stick or bind, repair them
as needed.
• If the mode control motor runs smoothly, go to
step 4.
4. Use a digital multimeter with an output of 1 mA or
less at the 20 k range. With the mode control
motor running as in step 2, check for continuity
between the No. 3, 4, 5, and 6 terminals and the
No. 7 terminal individually. There should be
continuity for a moment at each terminal as the
motor moves past the switch's terminal.
5. If there is no continuity for a moment at each
terminal, replace the mode control motor.
21-38 21-38
Mode Control Motor Replacement
1. Disconnect the 7P connector (A) from the mode
control motor (B). Remove the rods (C) of the mode
control motor from the mode control motor linkage
(D) and the mode control linkage (E). Remove the
self-tapping screws and the mode control motor
from the heater unit.
B
A
2. Install the motor in the reverse order of removal.
After installation, make sure the motor runs
smoothly.
D
C
C
E