B1013

DTC B1013 Inside Air Temp Sensor Open or Shorted (Part 1 Of 2):

DTC B1013 Inside Air Temp Sensor Open or Shorted (Part 2 Of 2):

DTC B1013 Inside Air Temp Sensor Open or Shorted:

CIRCUIT DESCRIPTION
The Inside Air Temperature Sensor is a thermistor controls signal voltage to the HVAC programmer. The inside air temperature sensor system contains an aspirator which pulls the air from the passenger compartment through the sensor. The HVAC programmer supplies voltage on circuit 734. When the sensor is cold, the resistance is high and the HVAC programmer will sense a high signal voltage at terminal B4. When the sensor warms, resistance is reduced and the signal voltage is pulled low through circuit 61. Signal voltage will vary from 5 V (open circuit) to 0 V (short circuit).

CONDITIONS FOR SETTING THE DTC
^ The ignition is ON.
^ DTC B1010 is not set.
^ Circuit short or open.

ACTION TAKEN WHEN THE DTC SETS
^ A default value of 24°C (75°F) will be used by the HVAC programmer.
^ The default value allows the system to operate.

CONDITIONS FOR CLEARING THE DTC
^ Using a Scan Tool.
^ A history DTC will clear when 40 consecutive ignition cycles have occurred without a malfunction.
^ HVAC programmer battery voltage is interrupted.

TEST DESCRIPTION
3. Ensures that the DTC was not set in error.