Turbocharging Pressure Sensor Test

1. To check power source, turn ignition on. Unplug turbocharging pressure sensor. Measure voltage between terminals "VC" and "E2" of harness connector. Voltage should be 4-6 volts.
2. To check power output, turn ignition on. Unplug turbocharging pressure sensor vacuum hose from intake manifold. Connect voltmeter to Black/White and Black/Yellow wire terminals ("PIM" and "E2") of ECU connector and measure output voltage under ambient atmospheric pressure.
   Fig 1: Measuring Voltage To Turbocharging Pressure Sensor

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
3. Attach a vacuum pump to turbocharging pressure sensor vacuum hose and apply vacuum in specified stages. See Fig 2. Measure and record voltage readings for each stage of applied vacuum. See VACUUM/VOLTAGE SPECIFICATIONS table. Replace sensor if readings are not within specifications.

Fig 2: Cut-Away View of the Turbocharging Pressure Sensor

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

VACUUM/VOLTAGE SPECIFICATIONS

Applied Vacuum In. Hg	Volts
3.94	.15-.35
7.87	.40-.60
11.81	.65-.85
15.75	.90-1.10
19.69	1.15-11.35