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Turbocharging Pressure Sensor - Harness 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 Harness Voltage To Turbocharging Pressure Sensor
    G95411Courtesy 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 the VACUUM/VOLTAGE SPECIFICATIONS  table. Replace sensor if readings are not within specifications.
Fig 2: Cut-Away View of the Turbocharging Pressure Sensor
G118913Courtesy 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
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