Laser FWD L4-1997cc 2.0L DOHC Turbo (1993)
Barometric Pressure Sensor Circuit
Note: To test the Barometric Pressure Sensor, located on the air flow sensor, in the air cleaner housing, proceed as follows.
1. Connect a voltmeter between terminals 6 and 7 of the AFS Sensor connector.
Terminal 7: Barometric sensor output
Terminal 6: sensor ground
Terminal 4: sensor 5v power
Voltage (W/ key on and engine off)
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At sea level
Approximately 4.0 volts.
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At 2,000 ft.
Approximately 3.75 volts.
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At 4,000 ft.
Approximately 3.50 volts.
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At 6,000 ft.
Approximately 3.25 volts.
2. Warm the engine and bring it to a normal idle.
