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Old 11-09-2017, 01:36 AM   #1
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Edorian is on a distinguished road
Join Date: Apr 2014
Posts: 12

2002 SL1
Default Ion 2007 Accel Position Sensor

Hi all,

Does the 2007 Ion Accelerator Position Sensor assy. contain a spring?

It's part number (GM) 22706224. Also are there any adjustments or calibrations to be made after installation?



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Old 11-14-2017, 11:44 AM   #2
BobWolf will become famous soon enough
Join Date: Oct 2016
Location: Western New York
Posts: 58

2005 VUE 2.2L
2002 SL2
Default Re: Ion 2007 Accel Position Sensor

its not difficult its no different than testing the TPS operation .On a throttle cable type I confirm its position by testing its voltage output with a test meter. Typically its between 1 Volt idle/closed throttle and 5 volts wide open throttle / WOT.

Step 1. Start with a good multimeter find a good ground. you should have 12 volts constant off the positive terminal or known 12 volt source
Step 2. disconnect the TPS connector and turn the key to engine run position. You want power going to the sensor.
Step 3 With the multimeter grounded probe the connector to find supply voltage. Note the supply voltage as this will be what you want at WOT.
Only one wire should be hot max voltage others might have a slight voltage usually a couple tenths of a volt.
Step 4 Switch to Ohms and check for ground. Ground the meter, and probe the low/no voltage wires, the one that zeros out is ground and the other is signal.
Step 5. Turn off the ignition, plug in the TPS, and BACK PROBE the harness, do not splice into the wires you will create a short. Sewing needles and low voltage jumper wires with alligator clips work best for this if you don't have harness probes.
Step6. Turn on the ignition but don't start the vehicle. Typically the voltage should be 1 volt or less at idle/closed throttle and at WOT the maximm voltage you read on the voltage wire should be present within a couple tenths of a volt.
Test drive and if it drives right call it a win and enjoy your favorite beverage.

We are all born ignorant, but one must work hard to remain stupid.
Benjamin Franklin.


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