Honda Element. Manual — part 577

12. Turn the ignition switch OFF.

13. Measure the resistance between the No. 13 and the No. 28 terminals of the heater control panel 30P

connector.

Fig. 58: Measuring Resistance Between No. 13 And 28 Terminals Of Heater Control Panel 30P
Connector
Courtesy of AMERICAN HONDA MOTOR CO., INC.

Is the resistance less than 24 kohms?

YES -Check for loose wires or poor connections at the heater control panel 30P connector and at the A/C
pressure switch 2P connector. If the connections are good, substitute a known-good heater control panel,
and recheck. If the symptom/indication goes away, replace the original heater control panel.

NO -Test the evaporator temperature sensor (see EVAPORATOR TEMPERATURE SENSOR
REPLACEMENT ).

14. Make sure the A/C switch is OFF.

15. Using the backprobe set, measure the voltage between the No. 9 terminal of under-dash fuse/relay box

connector F (12P) and body ground with the under-dash fuse/relay box connectors connected.

Fig. 59: Measuring Voltage Between No. 9 Terminal Of Under-Dash Fuse/Relay Box Connector F
(12P) And Body Ground
Courtesy of AMERICAN HONDA MOTOR CO., INC.

2007 Honda Element EX

2007-2008 HVAC HVAC - Element

Is there 5 V or more?

YES -Repair open in the wire between the under-dash fuse/relay box and the A/C pressure switch.

NO -Refer to the multiplex control system (see TROUBLESHOOTING ).

16. Check for proper A/C system pressure.

Is the pressure within specifications?

YES -Replace the A/C pressure switch.

NO -Repair the A/C pressure problem.

AIR MIX CONTROL MOTOR TEST

1. Disconnect the 7P connector from the air mix control motor.

2. Connect battery power to the No. 1 terminal of the air mix control motor, and ground the No. 2 terminal;

the air mix control motor should run smoothly, and stop at Max Hot. If it doesn't, reverse the connections;
the air mix control motor should run smoothly, and stop at Max Cool.

Fig. 60: Identifying Air Mix Control Motor Connector Terminals
Courtesy of AMERICAN HONDA MOTOR CO., INC.

3. If the air mix control motor did not run in step 2, remove it, then check the air mix control linkage and

door for smooth movement.

NOTE:

Check for multiplex codes in mode 1. Follow the troubleshooting for any
codes found. If no codes are found, substitute a known-good multiplex
control unit and a ECM/PCM one at a time.

NOTE:

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

2007 Honda Element EX

2007-2008 HVAC HVAC - Element



If the linkage and door move smoothly, replace the air mix control motor.



If the linkage or door sticks or binds, repair them as needed.



If the air mix control motor runs smoothly, go to step 4.

4. Measure the resistance between the No. 5 and No. 7 terminals. It should be between 4.2 to 7.8 kohms.

5. Reconnect the air mix control motor 7P connector, then turn the ignition switch ON (II).

6. Using the backprobe set, measure the voltage between the No. 3 and No. 7 terminals.

Max Cool-about 1 V

Max Hot-about 4 V

7. If either the resistance or voltage readings are not as specified, replace the air mix control motor.

AIR MIX CONTROL MOTOR REPLACEMENT

1. Remove the under-dash fuse/relay box (see REMOVAL AND INSTALLATION ).

2. Disconnect the 7P connector (A) from the air mix control motor (B). Remove the self-tapping screws and

the air mix control motor from the heater unit.

Fig. 61: Identifying Air Mix Control Motor
Courtesy of AMERICAN HONDA MOTOR CO., INC.

3. Install the motor in the reverse order of removal. After installation, make sure the motor runs smoothly.

MODE CONTROL MOTOR TEST

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

2. Connect battery power to the No. 1 terminal of the mode control motor, and ground the No. 2 terminal;

NOTE:

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

2007 Honda Element EX

2007-2008 HVAC HVAC - Element

the mode control motor should run smoothly, and stop at Vent. If it doesn't, reverse the connections; the
mode control motor should run smoothly, and stop at Defrost. When the mode control motor stops
running, disconnect battery power immediately.

Fig. 62: Identifying Mode Control Motor Connector Terminals
Courtesy of AMERICAN HONDA MOTOR CO., INC.

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 kohms range. With the mode control

motor running as in step 2, check for continuity between the No. 3, 4, 5, 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.

MODE CONTROL MOTOR REPLACEMENT

1. Remove the ECM/PCM (see ECM/PCM REPLACEMENT ).

2. 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.

2007 Honda Element EX

2007-2008 HVAC HVAC - Element