The following Diagnostic Trouble Code (DTC) relate to the 2001 Ford Ranger air conditioning (A/C) system:

1) DTC P1461 A/C Pressure Sensor Circuit High Input – The interface adapter assembly (IAA) module uses the A/C pressure sensor to monitor the ofpressure on the high side of the A/C compressor. The IAA module sets DTC P1461 when the ambient temperature is greater than 18 °C (64°F) and the pressure has been less than 80 kPa (12 psi) or greater than 3275 kPa (475 psi) for more than 30 seconds.

2) DTC B1946 A/C Post Evaporator Sensor Circuit Failure – The interface adapter assembly (IAA) module uses the evaporator temperature sensor to monitor the temperature of the A/C evaporator core. The IAA module sets DTC B1946 if the evaporator temperature is greater than 55°C (131°F) or less than -40°C (-40°F) for more than 30 seconds while the A/C is running.

3) DTC B2119 Compressor Failure – The interface adapter assembly (IAA) module monitors the A/C compressor speed feedback signal from the A/C inverter motor controller (IMC) to determine if the A/C compressor is not operating when it should be. If the IAA module is commanding 14% duty cycle and the compressor speed does not increase above 250 rpms for 30 seconds, DTC B2119 is set.

4) DTC B2518 Compressor Overtemperature Fault – The interface adapter assembly (IAA) module uses the A/C overtemperature sensor to monitor the temperature of the A/C compressor. The IAA module sets DTC B2606 if the compressor temperature is greater than 77°C (171°F) for more than 5 seconds. If this occurs, the A/C compressor will be disabled. The compressor will turn back on when the temperature decreases below 67°C (153°F).

5) DTC B2606 A/C Temperature Sensor Out of Range – The interface adapter assembly (IAA) module use the A/C overtemperature sensor to monitor the temperature of the A/C compressor. The IAA module sets DTC B2518 if the compressor temperature is greater than 125°C (257°F) or less than -40°C (-40°F) for more than 30 seconds. If this occurs, the A/C compressor will be disabled.

The following video shows you the 2001 Ford Ranger Air Conditioning System Fix (clutch relay dirty – problem). (Source: Youtube.com)



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