Too Hot In Vehicle
TOO HOT IN VEHICLEDIAGNOSTIC AIDS
- The condition may be intermittent.
- The air temperature actuators can be calibrated. Refer to Re-Calibrating Actuators. Re-Calibrating Actuators
- If the door actuators are out of the calibrated range the auto recirculation function will not work. The vehicle operator must place the HVAC controls to the recirculation position manually. Ensure to perform an Actuator recalibration to correct this condition.
TEST DESCRIPTION
Steps 1-3:
Steps 4-10:
Steps 11-15:
Steps 16-24:
Steps 25-31:
The numbers below refer to the step numbers on the diagnostic table.
6. Ambient air temperature must be above 3°C (38°F) in order for this A/C compressor test to be run.
8. This step ensures that the lower air temperature sensors operate properly. The LH and RH Heater Duct Actual parameter count values should lower as the air temperature of the ducts get warmer. If there is a high resistance in either of the air temperature sensors circuits or the sensor itself then the count value of the effected sensor would remain high.
9. This step ensures that the upper air temperature sensors operate properly. The LH and RH AC Duct Actual parameter count values should lower as the air temperature of the ducts get warmer. If there is a high resistance in either of the air temperature sensors circuits or the sensor itself then the count value of the effected sensor would remain high.
14. Use the table to determine that the recorded scan tool values are within range for the recorded probe temperatures of the J 43600.