DTC P1436: A/C Evaporator Temperature (A/CET) Circuit Low Input
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P1436 - A/C EVAPORATOR TEMPERATURE (A/CET) CIRCUIT LOW INPUT
| Description: | Indicates the A/CET signal input was less than the self-test minimum. The self-test minimum is 0.13 volts. | ||
| Possible Causes: |
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| Diagnostic Aids: | The powertrain control module (PCM) sources a low current 5 volt reference on the A/CET circuit (this voltage can be measured with the sensor disconnected). As the A/C evaporator air temperature changes, the A/CET circuit resistance to SIG RTN (ground) changes (which changes the voltage the PCM detects). When the A/CET signal is detected below the self-test minimum, check for shorts to SIG RTN or ground which would pull the voltage low. | ||
| Application | Key On Engine Off | Key On Engine Running | Continuous Memory |
| All | GO to Pinpoint Test DJ . | ||