Conditions For Setting DTC
If the PCM detects more than one PNP switch input signal for a continuous period of thirty seconds, it is judged that there is a short in the PNP switch circuit and DTC 28 is set.
If the PCM detects more than one PNP switch input signal for a continuous period of thirty seconds, it is judged that there is a short in the PNP switch circuit and DTC 28 is set.