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Pinpoint Test BP - Barometric Pressure Sensor: 1.6L

Turn ignition off. Connect BOB. Remove dust cover from BP sensor, located on passenger side cowl. Turn ignition on. Connect vacuum pump to BP sensor. Measure voltage between pins BP and SIGRTN on BOB while applying vacuum to BP sensor. See BAROMETRIC PRESSURE SENSOR OUTPUT VOLTAGE  table. Replace BP sensor if voltage is not as specified.

BAROMETRIC PRESSURE SENSOR OUTPUT VOLTAGE

Vacuum (In. Hg.) (1) Voltage
0 3.84
5 3.36
10 2.66
15 1.93
20 1.26
25 .58
(1) Voltage may vary by 15 percent.