C 3500 Truck 2WD V8-393 6.5L DSL VIN P (1995)
Turbo Boost Sensor: Testing and Inspection
Turbo Boost Sensor Testing and Inspection Procedure
At idle, the scan tool will display boost pressure about the same reading as barometric pressure. When at a full load, with Wide Open Throttle
(WOT) the boost pressure will indicate high pressure or voltage. When at a decel with throttle closed, the boost sensor will display low pressure or
voltage. The boost pressure reading is the opposite of what you would measure on a vacuum gage. When manifold pressure is high, vacuum is low.
A failure in the boost sensor circuit should set a DTC 61 or DTC 62. Refer to Diagnostic Trouble Code Charts/Diagnostic Charts. See:
Powertrain Management/Computers and Control Systems/Testing and Inspection