Sensors

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A number of sensors help the Impreza's boxer engine keep things in check. The diagram below in conjunction with the table illustrate the positioning of the sensors on a classic shape Impreza.

Sensor Diagram

Sensor	Diagnostics
-	Starter switch is abnormal
-	Neutral position switch is abnormal.(AT)
1	Pressure sensor is abnormal
2	Pressure exchange solenoid valve is not functioning
3	Wastegate control solenoid valve is not functioning
5	Mass air flow sensor signal is abnormal
6	Oxygen sensor is not functioning
7	Vehicle speed sensor 2 is not functioning
8	Engine coolant temperature sensor signal is abnormal
9	Throttle position sensor signal is abnormal
9	Idle switch signal is abnormal
10	Idle air control solenoid valve is not functioning
11	Knock sensor signal is abnormal
12	No signal from camshaft position sensor, but signal from crankshaft position sensor
13	No signal from crankshaft position sensor when starter switch is ON
14	Purge control solenoid valve is not functioning

Sensor Table

Information source - Saxon Fields web page

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Page last modified on May 10, 2006, at 08:47 PM

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