Blower Power Transistor Test: Test

How to use this manual .

1. Power Transistor - Test

   Preconditions 

   • Passenger's Dashboard Undercover Removed
   • Power Transistor Connector Disconnected

   Figure 1 

   Courtesy of HONDA, U.S.A., INC.

   Figure 2 

   Courtesy of HONDA, U.S.A., INC.

   Procedure/Specifications 

   1. Measure the resistance between terminals according to the table. (Figure 1 and 2)

   • If the resistance is within the specifications, go to step 2.
   NOTE: Also check the blower motor for binding. Power transistor failure can be caused by a defective blower motor.

   Figure 3 

   Courtesy of HONDA, U.S.A., INC.

   2. Reconnect the power transistor connector.

   3. Disconnect climate control unit connector A (32P).

   4. Refer to Climate Control Unit Connector for Inputs and Outputs 

   and connect terminals with a jumper wire according to the table. (Figure 3)5. Turn the vehicle to the ON mode.

   6. Check that the blower motor runs.

   Result 

   • If the result is not as specified, replace the power transistor.
   NOTE: A faulty blower motor can cause the power transistor to fail. Before replacing the power transistor, check the blower motor for binding, and replace the blower motor if necessary .