Honda Civic. Manual — part 741

5. If there is no continuity for a moment at each terminal, replace the mode

control motor (see MODE CONTROL MOTOR TEST ).

MODE CONTROL MOTOR REPLACEMENT

1. Remove the glove box (see PASSENGER's DASHBOARD UNDERCOVER

REMOVAL/INSTALLATION ).

2. Remove the wire harness clip (A), the self-tapping screws, and the passenger's

heater duct (B).

Fig. 36: Identifying Wire Harness Clip And Passenger's Heater Duct
Courtesy of AMERICAN HONDA MOTOR CO., INC.

3. Disconnect the 7P connector (A) from the mode control motor (B). Remove the

self-tapping screws and the mode control motor from the heater unit.

2008 Honda Civic EX

2006-08 HVAC Heating - Civic (All Except Hybrid)

Fig. 37: Identifying 7P Connector And Mode Control Motor
Courtesy of AMERICAN HONDA MOTOR CO., INC.

4. Install the motor in the reverse order of removal. Make sure the pin on the

motor is properly engaged with the linkage. After installation, make sure the
motor runs smoothly.

RECIRCULATION CONTROL MOTOR TEST

1. Disconnect the 7P connector from the recirculation control motor.

2. Connect battery power to the No. 1 terminal of the recirculation control motor,

and ground the No. 5 and No. 7 terminals; the recirculation control motor
should run smoothly. To avoid damaging the recirculation control motor, do
not reverse power and ground. Disconnect the No. 5 or No. 7 terminals from
ground; the recirculation control motor should stop at Fresh (when the No. 5
terminal is disconnected) or Recirculate (when the No. 7 terminal is
disconnected). Don't cycle the recirculation control motor for a long time.

NOTE:

Before testing, check for HVAC DTCs (see HOW TO USE
THE SELF-DIAGNOSTIC FUNCTION ).

NOTE:

Incorrectly applying power and ground to the
recirculation control motor will damage it. Follow the
instructions carefully.

2008 Honda Civic EX

2006-08 HVAC Heating - Civic (All Except Hybrid)

Fig. 38: Identifying Recirculation Control Motor Terminals
Courtesy of AMERICAN HONDA MOTOR CO., INC.

3. If the recirculation control motor did not run in step 2, remove it, then check

the recirculation control linkage and door for smooth movement.

If the linkage and door move smoothly, replace the recirculation control
motor (see RECIRCULATION CONTROL MOTOR TEST ).

If the linkage or door stick or bind, repair them as needed.

RECIRCULATION CONTROL MOTOR REPLACEMENT

1. Remove the glove box (see PASSENGER's DASHBOARD UNDERCOVER

REMOVAL/INSTALLATION ) and the passenger's kick panel, 2-door (see
TRIM REMOVAL/INSTALLATION - DOOR AREAS ), 4-door (see
FRONT DOOR SILL AREA - 4-DOOR ).

2. Disconnect the 7P connector (A) from the recirculation control motor (B).

Remove the self-tapping screws and the recirculation control motor from the
blower unit.

2008 Honda Civic EX

2006-08 HVAC Heating - Civic (All Except Hybrid)

Fig. 39: Identifying 7P Connector And Recirculation Control Motor
Courtesy of AMERICAN HONDA MOTOR CO., INC.

3. Install the motor in the reverse order of removal. Make sure the pin on the

motor is properly engaged with the linkage. After installation, make sure the
motor runs smoothly.

HEATER CONTROL PANEL REMOVAL AND INSTALLATION

1. Remove the center panel (see AUDIO UNIT

REMOVAL/INSTALLATION ).

2. Remove the dials (A), the self-tapping screws, and the heater control panel (B).

2008 Honda Civic EX

2006-08 HVAC Heating - Civic (All Except Hybrid)