Honda 2004 Odyssey Service Manual page 1630

DTC indicator M: A Problem in the Mode
Control Linkage, Doors, or Motor
1. Test the mode control motor (see page 21-38).
Is the mode control motor OK ?
YES Substitute a known-good climate control unit,
and recheck. If the symptom/indication goes away,
replace the original climate control unit.
NO Go to step 2.
2. Remove the mode control motor (see page 21-38).
3. Check the mode control linkage and doors for
smooth movement.
Do the mode control linkage and doors move
smoothly?
YES Replace the mode control motor.
NO Repair the mode control linkage or doors.
DTC indicator N: A Problem in the Blower
Motor Circuit
1. Turn the ignition switch ON (II) and turn the blower
fan speed knob to HIGH.
Does the blower motor run?
YES Go to step 2.
NO Go to step 20.
2. Turn the ignition switch OFF, then disconnect the
power transistor 5P connector.
3. Check for continuity between the No. 5 terminal of
the power transistor 5P connector and body ground.
POWER TRANSISTOR 5P CONNECTOR
Wire side of female terminals
Is there continuity?
YES Go to step 4.
NO Check for an open in the wire between the
power transistor and body ground. If the wire is OK,
check for poor ground at G401.
BLK
(cont'd)
21-99 21-99