Conditions required to set DTC are:
- Engine running and PCM receiving 3X reference pulses.
- Ratio of 24X reference pulses to 3X reference pulses received by PCM does not equal 8.
- Ratio of 3X reference pulses to CMP pulses received by PCM equals 6.
- Listed conditions occur for 30 seconds.
- Engine running and PCM receiving 3X reference pulses.
- Ratio of 18X reference pulses to 3X reference pulses received by PCM does not equal 6.
- Ratio of 3X reference pulses to CMP pulses received by PCM equals 6.
- Listed conditions occur 80 times.