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Home >> Saab >> 2005 >> 9-2X Linear, 251, Automatic >> Repair and Diagnosis >> Engine Performance >> System >> Engine (Diagnostics) - 2.5L >> Diagnostic Procedure With DTC >> DTC P0851: Neutral Switch Input Circuit Low (M/T Model) >> Wiring Diagram: >> Check Neutral Position Switch
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Check Neutral Position Switch

Turn the ignition switch to OFF.

Disconnect the connector from transmission harness.

Place the shift lever in a position neutral.

Measure the resistance between transmission harness and connector terminals.

Connector & terminal 

(T2) No. 1 - No. 2: 

Is the resistance more than 1 MO? 

YES. Go to next step. 

NO 

Repair short circuit in transmission harness or replace neutral position switch.



Place the shift lever in neutral.

Measure the resistance between transmission harness connector terminals.

Connector & terminal 

(T2) No. 1 - No. 2: 

Is the resistance less than 1 O? 

YES. Go to next step. 

NO 

Repair short circuit in transmission harness or replace neutral position switch.