9-5 Wagon (9600) L4-2.3L Turbo (B235) (1999)
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The oxygen sensor's screening
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The pedal position sensors
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The throttle position sensors
The following sensors are grounded via pin 70 of the control module:
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The charge air absolute pressure sensor
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The pedal position sensors
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The throttle position sensors
NOTE: Control module pins 22 and 70 are linked together in the throttle body.
Reference ground
The oxygen sensor is grounded via control module pin 58.
Diagnostics
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If no power ground is present, the engine will not start and the system cannot be contacted by the diagnostic tool.
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If no sensor ground is present, the engine will not start and the functions supplied with current will generate diagnostic trouble codes.
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If no reference ground is present, diagnostic trouble code P0134 will be generated.