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Home >> Ford >> 2014 >> Fusion S >> Repair and Diagnosis (Single Page) >> Heating, Ventilation & A/C (HVAC) >> HVAC Control Systems >> HVAC - Climate Control System -- (Except Hybrid) >> Diagnosis And Testing >> Climate Control System - Vehicles With: Electronic Manual Temperature Control (EMTC) >> Pinpoint Test(s) >> Pinpoint Test P: Insufficient Heat In Auto Start-Stop Mode Only >> Normal Operation and Fault Conditions

Normal Operation and Fault Conditions

Cabin Heater Coolant Pump - vehicles equipped with Auto Start-Stop,

REFER to: CLIMATE CONTROL SYSTEM - VEHICLES WITH: ELECTRONIC MANUAL TEMPERATURE CONTROL (EMTC) - SYSTEM OPERATION AND COMPONENT DESCRIPTION .

DTC FAULT TRIGGER CONDITIONS

DTC Description Fault Trigger Conditions
P2601 Coolant Pump "A" Control Circuit Performance/Stuck Off
  • This DTC sets when the PCM senses any of the following conditions:
  • Dry-Run leads to cabin heater coolant pump running without resistance
  • Over Temperature
  • Over/Under Voltage
  • Impeller Stall
  • Impeller Speed below minimum speed
  • Internal Error
P2602 Coolant Pump "A" Control Circuit Low This DTC sets when the PCM senses low voltage on the PWM circuit when commanding it high, indicating a short to ground to the cabin heater coolant pump.
P2603 Coolant Pump "A" Control Circuit High This DTC sets when the PCM senses low voltage on the PWM circuit when commanding it high, indicating an open circuit to the cabin heater coolant pump.
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