Pcm Code EO32, Open Map Sensor Circuit: Action:
PCM turns on SERVICE ENGINE SOON light. PCM uses a substitute MAP value from a MAP versus RPM table when throttle switch is closed. PCM uses a substitute barometric pressure value of 92 kPa.
MAP sensor changes resistance based upon manifold vacuum. PCM provides a 5-volt reference and ground. MAP signal varies between ground and 5 volts as manifold vacuum varies. Code EO32 sets when PCM detects that MAP sensor signal is too low.
NOTE:
Test numbers refer to test numbers on diagnostic chart.
- This checks PCM's ability to respond to a 5-volt signal on MAP input. A reading of 106-109 kPa means wiring and PCM are okay.
- This checks 5-volt reference signal present at sensor connector.
- This checks circuit No. 432 short to ground.
- This checks PCM's ability to respond to a 5-volt signal voltage on MAP input.
- Fault is most likely at PCM connector or PCM. See CHART C-1, PCM REPLACEMENT CHECK, before PCM is replaced.