Acura TSX / Honda Accord CL. Manual - part 671

Fig. 97: Evaporator Temperature Sensor Test 

2. Then pour warm water on the sensor, and check for a change in resistance.  

3. Compare the resistance readings with the specifications shown in the graph; the resistance should be 

within the specifications.  

 

2004 Acura TSX 

2004 AUTOMATIC A/C SYSTEMS Climate Control System - TSX

  

 

Fig. 98: Evaporator Temperature Sensor Resistance Graph 

EVAPORATOR TEMPERATURE SENSOR REPLACEMENT 

Disconnect the 2P connector (A) from the evaporator temperature sensor (B), then remove the connector clip 
(C). Remove the self-tapping screw, and carefully pull out the evaporator temperature. Install the sensor in the 
reverse order of removal. 

 

2004 Acura TSX 

2004 AUTOMATIC A/C SYSTEMS Climate Control System - TSX

  

 

Fig. 99: Removing Evaporator Temperature Sensor 

POWER TRANSISTOR TEST 

1. Disconnect the 4P connector from the power transistor.  

2. Measure the resistance between the No. 3 and No. 4 terminals of the power transistor. It should be about 

1.4-1.5 kohm. 

z

If the resistance is within the specifications, go to step 3.  

z

If the resistance is not within the specifications, replace the power transistor.  

 

2004 Acura TSX 

2004 AUTOMATIC A/C SYSTEMS Climate Control System - TSX

  

 

Fig. 100: Measuring The Resistance Between The No. 3 & No. 4 Terminals Of The Power 
Transistor 

3. Carefully release the lock tab on the No. 1 terminal (BLU/YEL) (A) in the 4P connector, then remove the 

terminal and insulate it from body ground. 

 

2004 Acura TSX 

2004 AUTOMATIC A/C SYSTEMS Climate Control System - TSX