Toyota
Dodge Durango
 Service Manual
Emission Control Systems » On-board diagnostics
High and low limits

OPERATION

The PCM compares input signal voltages from each input device with established high and low limits for the device. If the input voltage is not within limits and other criteria are met, the PCM stores a diagnostic trouble code in memory. Other diagnostic trouble code criteria might include engine RPM limits or input voltages from other sensors or switches that must be present before verifying a diagnostic trouble code condition.

Load value

OPERATION Evaporative emission controls

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    High and low limits

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