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Evaporator Temperature Sensor Test Acura RDX I рестайлинг

Climate Control 4 illustrations ~316 words

Evaporator Temperature Sensor Test

Note. Before testing the sensor, check for climate control DTCs (see HOW TO CHECK FOR DTCS WITH THE HDS ).

Scheme 110

Scheme 110: Evaporator Temperature Sensor Test
Scheme 110: Evaporator Temperature Sensor Test

Scheme 111

Scheme 111
Scheme 111
  1. Remove the evaporator temperature sensor (see «EVAPORATOR CORE REPLACEMENT»(/acura/rdx/i-2009-2012/remont/automatic-hvac-system/#climate-control) ).
  2. Dip the sensor in ice water, and measure the resistance between its terminals.
  3. Pour warm water on the sensor, and check for a change in the resistance.
  4. Compare the resistance readings with the specifications shown in the graph; the resistance should be within the specifications.
  5. If the resistance is not as specified, replace the evaporator temperature sensor (see «EVAPORATOR CORE REPLACEMENT»(/acura/rdx/i-2009-2012/remont/automatic-hvac-system/#climate-control) ).

Scheme 112

Scheme 112: Power Transistor Test
Scheme 112: Power Transistor Test

Scheme 113

Scheme 113
Scheme 113
  1. Disconnect the 4P connector from the power transistor.
  2. Measure the resistance between terminals No. 3 and No. 4 of the power transistor. It should be about 1.5 kohms. If the resistance is within the specifications, go to step 3. If the resistance is not within the specifications, replace the power transistor (see «POWER TRANSISTOR REPLACEMENT»(/acura/rdx/i-2009-2012/remont/automatic-hvac-system/#climate-control) ). NOTE: Also check the blower motor. Power transistor failure can be caused by a defective blower motor.
  3. Carefully release the lock tab on terminal No. 1 (YEL) (A) in the 4P connector, then remove the terminal and insulate it from body ground.
  4. Reconnect the 4P connector to the power transistor.
  5. Make sure the YEL wire is completely isolated, then supply 12 V to the No. 1 cavity with a jumper wire.
  6. Turn the ignition switch to ON (II), and check that the blower motor runs. If the blower motor does not run, replace the power transistor (see «POWER TRANSISTOR REPLACEMENT»(/acura/rdx/i-2009-2012/remont/automatic-hvac-system/#climate-control) ). NOTE: A faulty blower motor can cause the power transistor to fail. If the power transistor is replaced, also check the blower motor for binding before installing the new power transistor. If the blower motor does not turn freely, replace it. If the blower motor runs, the power transistor is OK.