Question 1

How to install the park/neutral safety switch assembly for the U151F automatic transaxle on Toyota Sienna?

Accepted Answer

You should start installing the U151F automatic transaxle's park/neutral position switch assembly by attaching the switch to the manual valve shaft followed by temporary installation of the 2 bolts. Apply new lock plate and complete tightening process by using a torque tool set at 6.9 Nm (70 kgf-cm, 61 in-lbf). Install the control shaft lever temporarily and rotate it counterwise to its end position and then clockwise by two notches before taking it out. Install the switch by setting its groove against the neutral basic line while holding it in place then tighten the 2 bolts to a torque of 5.4 Nm (55 kgf-cm, 48 in-lbf). Use a screwdriver to bend the lock plate tabs before installing the control shaft lever and washer as well as the nut which should be tightened to 13 Nm torque (130 kgf-cm 9 ft-lbf). Join the park/neutral position switch connector to the required components. The transmission control cable assembly requires attachment of the control cable to the control shaft lever with the nut before torquing to 13 Nm (133 kgf-cm, 10 ft-lbf). This process is followed by installing the control cable with a new clip to the bracket. Inspect the park/neutral position switch assembly functions while adjusting its position. Review the shift lever placement and make position alignments if needed. The last step includes the installation of the battery combined with the air cleaner assembly.

Question 2

How to service and repair the Neutral Safety Switch on Toyota Sienna?

Accepted Answer

Service and repair operations for the Transmission Position Switch/Sensor should start with removing the engine under cover. You must remove the park/neutral position switch from its location after disconnecting its connector then taking off the nut and shift control cable before uninstalling the nut and washer and control shaft lever. First detach the park/neutral position switch by removing the lock plate then the nut followed by the two switch securing bolts. Begin the park/neutral position switch installation by tightening the two bolts with a torque of 5.4 Nm then proceed to put in the new lock plate and its nut with a torque of 6.9 Nm before bending the lock plate claws to fix the nut. Then install and torque the control shaft lever to 13 Nm (130 kgf-cm, 9 ft. lbs.). Finally attach the shift control cable and install its nut while torqueing to 15 Nm (150 kgf-cm, 11 ft. lbs.). Check the engine start capability with N or P position shift lever only by inspecting the park/neutral position switch connection. Proceed with adjustment steps if necessary. The procedure ends with a test drive of the vehicle while reinstalling the engine under cover.

OEM Toyota Sienna Neutral Safety Switch

6 Neutral Safety Switches found

Toyota Sienna Neutral Safety Switch

Toyota Sienna Neutral Safety Switch

Toyota Sienna Neutral Safety Switch

Toyota Sienna Neutral Safety Switch

Toyota Sienna Neutral Safety Switch

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Toyota Sienna Neutral Safety Switch

Toyota Sienna Neutral Safety Switch Parts and Q&A

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