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Sensors and Switches - Windows and Glass > < Transmission Position Switch/Sensor, A/T|Testing and Inspection
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Fig.161 - Chart C-1A Park/Neutral Switch

1.

Checks for switch closing in the P/N position. This is indicated by low voltage on CKT 434.

2.

Checks to see that voltage increases in D/R range.

3.

Checks for faulty wiring to ECM or faulty ECM itself. If voltage is present, it means wiring and ECM are OK.

Sensors and Switches - Windows and Glass > < Transmission Position Switch/Sensor, A/T|Testing and Inspection