Atmospheric Pressure Sensor
- Remove left side kick panel. Remove rubber cap and attach a vacuum pump to sensor port. Turn ignition on. Check voltage between each terminal and ground while applying and releasing 30 in. Hg to sensor. See Fig 1
.ATMOSPHERIC PRESSURE SENSOR TERMINAL VOLTAGE
Terminal Voltage "A" Less Than 1.5 "B" 4.5-5.5 "C" 12 "D" 1.4-4.9 - If voltages at terminal "A", "B", or "C" is not within specification, check wiring harness to sensor. If voltages at terminal "A", "B", or "C" is within specification, but terminal "D" is not within specification, replace atmospheric pressure sensor.