buick Workshop Repair Guides

Buick Workshop Service and Repair Manuals

Transmission Position Switch/Sensor, A/T|Testing and Inspection|Page 1949 > < TPS - Adjustment Procedure Correction|Page 1945
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Transmission Position Switch/Sensor: Testing and Inspection

Fig.162 - WIRING DIAGRAM for Chart C-1A Park/Neutral Switch. VIN P

CHART C-1A, PARK/NEUTRAL SWITCH

    The Park/Neutral Switch is closed to ground in Park or Neutral and open in Drive ranges. The ECM supplies 12 volts through an internal resistor to
CKT 434 and senses that the switch is closed when the voltage at terminal B10 drops to less than 1 volt.

Transmission Position Switch/Sensor, A/T|Testing and Inspection|Page 1949 > < TPS - Adjustment Procedure Correction|Page 1945