Rear Power Transistor Test

WARNING: This page does not describe the selected car, but rather 7 other vehicles, including the 2017 Honda Odyssey, 2016 Honda Odyssey, 2015 Honda Odyssey, 2014 Honda Odyssey, and 2013 Honda Odyssey. However, it is still accessible from the selected car via links, so may be relevant.

SRS Components are located in this area. Review the SRS component locations (see COMPONENT LOCATION INDEX ) and the precautions and procedures (see PRECAUTIONS AND PROCEDURES ) before doing repairs or service.

Remove the right rear side trim panel (see TRIM REMOVAL/INSTALLATION - REAR SIDE AREA ).
Disconnect the 4P connector from the rear power transistor.
Measure the resistance between terminals No. 3 and No. 4 of the rear power transistor. It should be about 1.5 kΩ.
- If the resistance is within the specifications, go to step 4.
- If the resistance is not within the specifications, replace the rear power transistor.
  NOTE: Also check the rear blower motor. Rear power transistor failure can be caused by a defective rear blower motor.
  
  Fig 1: Measuring Resistance Between Terminals No. 3 And No. 4 Of Rear Power Transistor
  Courtesy of AMERICAN HONDA MOTOR CO., INC.
Reconnect the 4P connector to the rear power transistor.
Disconnect rear A/C control unit connector B (5P).
Connect rear A/C control unit connector B (5P) terminals No. 2 and No. 4 with a jumper wire.

Fig 2: Connecting Rear A/C Control Unit Connector B (5P) Terminals No. 2 And No. 4 With A Jumper Wire
Courtesy of AMERICAN HONDA MOTOR CO., INC.
Turn the ignition switch to ON (II), and check that the rear blower motor runs at high speed.
- If the rear blower motor does not run, replace the rear power transistor.
  NOTE: A faulty rear blower motor can cause the rear power transistor to fail. If the rear power transistor is replaced, also check the rear blower motor for binding, and replace it if necessary.
- If the rear blower motor runs, the rear power transistor is OK.