Notes On Intermittents

Manipulate affected wiring and connectors while observing ECM parameter code "ED02". Apply and release vacuum to MAP sensor vacuum port using a vacuum source. If ECM parameter code "ED02" displays greater than 105 KPA, condition has been induced and cause of intermittent should be repaired. Code "EO31" can be set by:

• Short to voltage on circuit No. 432.
• Open from sensor to ECM on circuit No. 476.
• Defective MAP sensor.

Fig 1: Hard Trouble Code E031 - Shorted Map Sensor Ckt

Fig 2: Hard Trouble Code E031 - Shorted Map Sensor Ckt (1 of 2)

Fig 3: Hard Trouble Code E031 - Shorted Map Sensor Ckt (2 of 2)

Fig 4: Schematic for Hard Trouble Code E031