Too Cold In Vehicle - Primary
TOO COLD IN VEHICLEDIAGNOSTIC AIDS
- The condition may be intermittent.
- The air temperature actuators can be calibrated.
TEST DESCRIPTION
Steps 1-4:
Steps 5-7:
Steps 8-9:
Steps 10-12:
Steps 13-14:
Step 15:
Steps 16-18:
Steps 19-23:
Steps 24-28:
The number below refers to the step number in the diagnostic table.
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.
11. This action ensures that the internal fan of the inside air temperature sensor assembly is providing air flow across the internal sensor.
15. Use the following table to determine that the recorded scan tool values are within range for the recorded probe temperatures of the J 43600 ACR Air Conditioning Service Center.