15F No 5 Volts In System Power Circuit

*** UPDATED BY TSB #18-61-86

1. Place ignition switch in Off position.
2. Disconnect electrical connector from manifold absolute pressure sensor.
3. Connect a voltmeter between terminal No. 1 of the logic module white electrical connector and ground.
4. Place ignition switch in Run position and note voltmeter reading.
5. If voltmeter indicates a reading of at least 4.5 volts, replace manifold absolute pressure sensor.
6. If voltmeter indicates a reading of 0 volts, replace the logic module.

NOTE: Before replacing the logic module check the wire of cavity No. 1 of the logic module white connector for a short to ground.