DTC P0A03: Motor Electronics Coolant Temperature (MECT) Sensor Circuit High
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P0A03 - MOTOR ELECTRONICS COOLANT TEMPERATURE (MECT) SENSOR CIRCUIT HIGH
| Description: | An open circuit on this input or a short to VREF, produces a high voltage (approximately 5 volts) to the powertrain control module (PCM). The PCM activates the high speed fan, and the motor electronics coolant pump. A 10 mV difference exists between an open circuit/short to VREF, and a valid sensor reading at -40°C (-40°F). | ||
| Possible Causes: |
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| Diagnostic Aids: | |||
| Application | Key On Engine Off | Key On Engine Running | Continuous Memory |
| All | GO to PINPOINT TEST DN . | ||