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Rear Mode Control Motor Test

WARNING: This page is about a different car, the 2006 Honda Odyssey and 2005 Honda Odyssey. However, it is still accessible from the selected car via links, so may be relevant.
NOTE: Check for HVAC DTCs.
  1. Disconnect the 7P connector from the rear mode control motor.
    NOTE: Incorrectly applying power and ground to the rear mode control motor will damage it. Follow the instructions carefully.
  2. Connect battery power to the No. 1 terminal of the rear mode control motor, and ground the No. 2 terminal; the rear mode control motor should run, and stop at Vent. If it doesn't, reverse the connections; the rear mode control motor should run, and stop at Heat. When the rear mode control motor stops running, disconnect battery power immediately.
  3. If the rear mode control motor did not run in step  2 , remove it, then check the rear mode control linkage and door for smooth movement.
    • If the linkage and door move smoothly, replace the rear mode control motor (see REAR MODE CONTROL MOTOR REPLACEMENT  ).
    • If the linkage or door sticks or binds, repair them as needed.
    • If the rear mode control motor runs smoothly, go to step 4.
    Fig 1: checking Rear Mode Control Linkage And Door
    G03706529Courtesy of AMERICAN HONDA MOTOR CO., INC.
  4. Measure the resistance between the No. 5 and No. 7 terminals. It should be between 4.2 to 7.8 k ohm.
  5. Reconnect the rear mode 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. 5 terminals.
    • Vent-about 0.5 V 
    • Heat-about 4.5 V 
  7. If either the resistance or voltage readings are not as specified, replace the rear mode control motor (see REAR MODE CONTROL MOTOR REPLACEMENT  ).
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