Displaying Sensor Inputs at the Climate Control Unit: Notes

The climate control unit has a mode that displays sensor inputs it receives. This mode shows you what the climate control unit is receiving from each of the sensors, one at a time, and it can help you determine if a sensor is faulty.

Checks before using the sensor input display mode 

1. Turn the ignition switch to ON (II), then select AUTO and check the recirculation door function; press the recirculation button to switch from FRESH to RECIRC. The air volume and sound should change slightly.
2. Adjust the temperature control knob to the desired test temperature. When selecting the test temperature, note these items:
   • "Lo" temperature setting will default to MAX COOL, VENT, and RECIRC.
   • "Hi" temperature setting will default to MAX HOT, HEAT, and FRESH.
   • 58 through 86°F settings will use the automatic climate control logic (USA models).
   • 16 through 28°C settings will use the automatic climate control logic (Canada models).
3. Turn the ignition switch to LOCK (0).

   Run the sensor input display mode 

4. Press and hold both the AUTO and recirculation buttons while starting the engine. Release the buttons.
5. Turn the ignition switch to ON (II).
6. Press and hold the three buttons (Menu, Map/Guide, and Cancel), and keep them pressed for about 5 seconds. The display screen will go directly to the "Select Diagnosis Items" menu.
7. Use the interface dial to select Self-Diagnosis Mode, then select A/C. The screen will go to Aircon, then select Aircon Diag. The display will show the sensor inputs.
   DISPLAY REFERENCE CHART
   
   

   Display Panel	Item	Displayed Value
   TR sensor	In-car temperature	°C
   TAM sensor	Outside air temperature	°C
   TS sensor	Solar radiation sensor value: dark=00, flashlight=04, cloudy=10, sunny=65	kcal/m2 -min
   TW sensor	Engine coolant temperature	°C
   TE sensor	Evaporator outlet air temperature	°C
   DrVENT sensor	Driver's vent air temperature	°C
   PaVENT sensor	Passenger's vent air temperature	°C
   DrA/M motor	Driver's air mix opening (low value indicates cooler air distribution, higher value indicates warmer air distribution)	% of opening
   PaA/M motor	Passenger's air mix opening (low value indicates cooler air distribution, higher value indicates warmer air distribution)	% of opening
   Mode motor	Mode opening	% of opening
   R/F motor	Recirculation opening	% of opening
   DrC/V sensor	Driver's cool vent opening	% of opening
   PaC/V sensor	Passenger's cool vent opening	% of opening
   RrVENT motor	Rear vent opening	% of opening
   TAO	Vent temperature air out (TAO)	°C
   VSP	Vehicle speed (vehicle must be driven to display speed)	km/h
   Pd sensor	A/C pressure	MPa

   NOTE:

   • The sensor values will be displayed in degrees Celsius (°C). Use the chart to convert the value to degrees Fahrenheit (°F).
   • If the sensor value displays "Er" this indicates there is an open or short in the circuit or sensor. Check for DTCs using the HDS, or refer to checking DTCs by DTC indication.
   • If necessary, compare the sensor input display to a known-good vehicle under the same test conditions.
   • If the sensor is out of the normal range, refer to the In-Car Temperature Sensor Test  Locating sensor test or substitute a known-good sensor, and recheck.
8. To cancel the sensor input display mode, press the AUTO button or turn the ignition switch to LOCK (0).