DR-2C MAP Sensor Signal Wire to Logic Module

1. With MAP sensor removed from logic module and ignition switch in Run position, disconnect MAP sensor electrical connector.
2. Connect positive lead of voltmeter to white wire and negative lead to black wire (lead to logic module printed circuit board) of MAP sensor electrical connector.
3. Place ignition switch in Run position.
4. If voltmeter reads at least 4 volts, replace MAP sensor.
5. If voltmeter does not read 4 volts, replace logic module.