Acura TSX / Honda Accord CL. Manual - part 655

Connector 

8. Check for continuity between the No. 15 terminal of audio-HVAC display panel connector A (22P) and 

the No. 2 terminal of the evaporator temperature sensor 2P connector. 

Is there continuity? 

YES: Check for loose wire or poor connections at audio-HVAC display panel connector A 
(22P) and at the evaporator temperature sensor 2P connector. If the connections are good, 
substitute a known-good audio-HVAC display panel, and recheck. If the symptom/indication 
goes away, replace the original audio-HVAC display panel.  

NO: Repair open in the wire between the audio-HVAC display panel and the evaporator 
temperature sensor.  

Fig. 45: Checking For Continuity Between The No. 15 Terminal Of Audio-HVAC Display 
Panel Connector A (22P) & The No. 2 Terminal Of The Evaporator Temperature Sensor 2P 
Connector 

DTC INDICATOR H OR DTC B1232: A SHORT IN THE EVAPORATOR TEMPERATURE SENSOR 
CIRCUIT 

1. Clear the DTC.  

2. Turn the ignition switch OFF, and then ON. 

 

2004 Acura TSX 

2004 AUTOMATIC A/C SYSTEMS Climate Control System - TSX

  

 

3. Operate the climate control system is several modes.  

4. Check the DTCs. 

Is DTC H or B1232 indicated? 

YES: Go to step 5.  

NO: Intermittent failure.  

5. Disconnect the evaporator temperature sensor 2P connector.  

6. Test the evaporator temperature sensor (see EVAPORATOR TEMPERATURE SENSOR TEST ). 

Is the resistance within the specifications shown on the graph? 

YES: Go to step 7.  

NO: Replace the evaporator temperature sensor.  

7. Disconnect audio-HVAC display panel connector A (22P).  

8. Check for continuity between the No. 14 terminal of audio-HVAC display panel connector A (22P) and 

body ground. 

Is there continuity? 

YES: Repair short to body ground in the wire between the audio-HVAC display panel and 
the evaporator temperature sensor.  

NO: Substitute a known-good audio-HVAC display panel, and recheck. If the 
symptom/indication goes away, replace the original audio-HVAC display panel. 

 

2004 Acura TSX 

2004 AUTOMATIC A/C SYSTEMS Climate Control System - TSX

  

 

Fig. 46: Checking For Continuity Between The No. 14 Terminal Of Audio-HVAC Display 
Panel Connector A (22P) & Body Ground 

DTC INDICATOR I OR DTC B1233: AN OPEN IN THE DRIVER'S AIR MIX CONTROL MOTOR 
CIRCUIT 

1. Clear the DTC.  

2. Turn the ignition switch OFF, and then ON.  

3. Operate the climate control system is several modes.  

4. Check the DTCs. 

Is DTC I or B1233 indicated? 

YES: Go to step 5.  

NO: Intermittent failure, check for loose wires or poor connections on the driver's air mix 
control motor circuit.  

5. Test the driver's air mix control motor (see DRIVER'S AIR MIX CONTROL MOTOR TEST ). 

Is driver's air mix control motor OK? 

YES: Go to step 6.  

NO: Replace the driver's air mix control motor.  

6. Disconnect the driver's air mix control motor 7P connector. 

 

2004 Acura TSX 

2004 AUTOMATIC A/C SYSTEMS Climate Control System - TSX

  

 

7. Disconnect audio-HVAC display panel connector A (22P).  

8. Check for continuity between following terminals of audio-HVAC display panel connector A (22P) and 

the driver's air mix control motor 7P connector. 

Is there continuity? 

YES: Check for loose wire or poor connections at audio-HVAC display panel connector A 
(22P) and at the driver's air mix control motor 7P connector. If the connections are good, 
substitute a known-good audio-HVAC display panel and recheck. If the symptom/indication 
goes away, replace the original audio-HVAC display panel.  

NO: Repair any open in the wire(s) between the audio-HVAC display panel and the driver's 
air mix control motor.  

CONNECTOR CONTINUITY TESTING 

Audio-HVAC Display Panel Connector A (22P) 
Terminal No.

Driver's Air Mix Control Motor 7P Conn

Termin

1
8
9
15
20

 

2004 Acura TSX 

2004 AUTOMATIC A/C SYSTEMS Climate Control System - TSX