Question about 2001 Saturn SL

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How do you replace a neutral safety switch on a saturn sl1 2001

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It 's a Transmission Range Switch , it tells the pcm more then just park or neutral positions !

Transmission Range Switch Replacement
Ensure the ignition is OFF.
Remove the air cleaner and duct assembly. Refer to Air Cleaner Housing and Duct Assembly Replacement in HVAC.

Disconnect the transaxle range switch harness connectors.
Place the control lever in the full clockwise position.
Notice: If manual shift shaft is rotated excessively, internal damage to the transaxle range switch may occur.
Prevent the manual shift shaft from rotating by holding the control lever while removing the retaining nut from the manual shift shaft. Remove the control lever.
Remove the 2 switch-to-transaxle case bolts and remove the switch.

Install the cable to the control lever and adjust the cable. Refer to Shift Control Cable Adjustment .
Before tightening the transaxle range switch-to-case bolts, proceed to the Adjustment procedure.
Adjustment Procedure
Important: While adjusting the transaxle range switch, always rotate the switch towards the engine to achieve continuity. A diagnostic trouble code DTC P0706 could result if this procedure is not followed.
Important: Digital volt/ohm meter (DVOM) with audible continuity test is preferred. Do not stick the probe in the transaxle range switch terminal hole; use male terminals on the transaxle range switch or faulty readings could occur.
Place the transaxle in Drive (D). Use an ohmmeter or continuity tester to check for continuity across terminals on the selector switch. Rotate the transaxle range switch from the left fender towards the engine until continuity is achieved.
Notice: Refer to Fastener Notice in the Preface section.
Tighten the switch-to-case bolts. After switch-to-case bolts have been tightened, check continuity.
Tighten the transaxle range switch-to-case bolts to 14 N·m (10 lb ft).
Connect the transaxle range switch harness connectors.
Install the air cleaner and duct assembly. Refer to Air Cleaner Housing and Duct Assembly Replacement in HVAC.
Using a scan tool, ensure each gear position reads correctly while manually moving through all gears.

Posted on Dec 15, 2016


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I don’t know what is wrong with my Saturn .it locked my key in ignition and won’t start either

If the position sensor for transmission is faulty it cannot detect park or neutral. In my younger days we called them neutral safety switches. These days the key locks in ignition too when they die or come loose.

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try putting it in neutral and start it, but it sounds like you need to replace or adjust the neutral safety switch

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Security system, maybe? Or possibly a bad park/neutral safety switch, or clutch interlock switch if a manual.

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Where is the inerta switch on a 2002 L300 series saturn

On vehicles equipped with an automatic transaxle, a neutral safety switch is mounted on the rear side of the transaxle bell housing to prevent starting the vehicle unless the shifter is in NEUTRAL or PARK . If the switch is suspected, check it as follows:
  1. Detach the electrical connector from the neutral safety switch that contains only 2-pins. These should be terminals A and B .
  2. With the transaxle in REVERSE , 3RD or 2ND , measure the resistance of the switch across terminals A and B ; the circuit should be open (infinite resistance).
  3. With the transaxle in PARK or NEUTRAL , the resistance across the two switch terminals should be less than 2 ohms.

Fig. Electrical schematic for the starting/charging system (CLICK HERE for zoom)

Hope this helps; remember to rating this free answer.

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The switch is located under the hood drivers side look straight down under the brake reservior. It is mounted on the transmission manual in put shaft has two electrical connectors, put new switch on in same position as old, (put trans in the N position before femoving switch)

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