Turbo Boost Sensor: Testing and Inspection

TURBO PRESSURE SENSOR INSPECTION

1. INSPECT POWER SOURCE VOLTAGE OF TURBO PRESSURE SENSOR





(a) Disconnect the turbo pressure sensor connector.
(b) Turn the ignition switch ON.





(c) Using a voltmeter, measure the voltage between connector terminals VC and E2 of the wiring harness side.

Voltage: 4.5 - 5.5 V

(d) Turn the ignition switch OFF.
(e) Reconnect the turbo pressure sensor connector.
2. INSPECT SUPPLY POWER OF TURBO PRESSURE SENSOR





(a) Disconnect the ECM from the ECU bracket.

(b) Install SST (check harness) between the ECM and wiring connectors.

SST 09990-01000
(c) Turn the ignition switch ON.





(d) Disconnect the vacuum hose from the turbo pressure sensor.
(e) Connect a voltmeter to terminals PIM and E2 of the ECM, and measure the output voltage under ambient atmospheric pressure.





(f) Apply vacuum to the turbo pressure sensor in 13.3 kPa (100 mmHg, 3.94 in.Hg) segments to 66.7 kPa (500 mmHg, 19.69 in.Hg).
(g) Measure the voltage drop from step (c) above for each segment.





Voltage drop

(h) Remove the SST. SST 09990-01000





(i) Reinstall the ECM.
(j) Reconnect the vacuum hose to the turbo pressure sensor.