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Home >> Cadillac >> 1990 >> Seville Base, 4T60/ME9 >> Repair and Diagnosis >> Engine Performance >> System >> Engine Controls - Tests W/Codes >> ECM Trouble Code Charts >> ECM Code EO32: Open Map Sensor Circuit >> Note On Intermittents
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Note On Intermittents

Code EO32 can be set by an open 5-volt reference signal between ECM and sensor, an open MAP signal between sensor and ECM or a defective MAP sensor. Manipulate affected wiring and connectors while observing ECM parameter ED02. Apply and release vacuum to MAP sensor vacuum port using a vacuum source. If ECM parameter ED02 displays less than 15 kPa, condition has been induced and cause of intermittent can be repaired. If wiring and connectors are okay, substitute a known good sensor and retest.

Fig 1: ECM Code EO32 Circuit Diagram
G90F21720
Fig 2: ECM Code EO32 Flow Chart
G90D13709