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What is a g switch malfunction on a jeep grand Cherokee laredo

I have 3 codes that come up at advance auto when they plug in scan tool. I have a check engine light on,thats it. 02 sensor bank 1(not sure which one this is. right wheel speed sensor malfunctioning. and g switch malfunction.where is the g switch and is there another name for it.

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  • Tammy Straight
    Tammy Straight Nov 20, 2014

    thank you, it is an '02. ok I know where you're talking about. I saw a video that showed that but it didnt mention anything about g switch so I didnt know. Looks like it wouldnt be too difficult. Hope Im right. I cant afford to take to someone. Advanced auto had no idea what it was. Thanks!

  • steve Nov 21, 2014

    let me know if i can help in any way , good luck

  • Tammy Straight
    Tammy Straight Nov 23, 2014

    thanks alot. as my driveway is all ice for now project is on hold. do you know if i will ruin anything if I keep driving it this way for now? I assume the abs may not respond properly but I dont want to ruin anything else either. funny how the abs light hasnt even came on. thanks to everyone's responces. very helpful.

  • steve Nov 23, 2014

    these G switch's are for helping the vehicle's ABS know how quickly you are accelerating and de-celarating and also if you get into a skid , so if you drive reasonably sensably with no harsh accelerating etc you should be fine , as tha ABS light hasn't illuminated the G switch is proberly working to some extent but not to its full potential

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  • Jeep Master
  • 3,679 Answers

You havn't mentioned year but a "G" switch is a mercury filled sensor used in the braking system see attachments ( hopefully).Disconnect the battery , once located and removed DO NOT attempt to open up the component , place in a metal container and take to be recycled , mercury is very toxic , there is only ONE component the schematic shows the usual locations
Removal Procedure for 1993-2001 Jeep Grand Cherokee:
Fold the rear seat assembly forward and roll back the carpeting to gain access to the sensor.

  1. Locate the ABS G-Force Sensor.
  2. Disconnect the harness connector.
  3. Remove the two bolts to release the sensor.
  4. Schematic,(general)
what is a g switch malfunction on a jeep grand Che - sensor.jpg

Posted on Nov 18, 2014

  • steve Nov 18, 2014

    sorry the schematic wasn't a success but the component is under the rear seat passenger side as per the removal procedure

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SOURCE: Code p0141 02 Sensor Heater Circuit Malfunct Bank #1 Sensor2

after the catalytic converter on the driver side in the exhaust pipe.

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Testimonial: "Awesome info. Thanks!"

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SOURCE: ERROR CODE

it means you have a bod O2 senser the front one as your car has two or three for a v6 but it will be the first one one in the pipe on the front side of a gm product or if your exhaust pipe comes off the back i.e. 2.3 it will be the one in the manifold itself ohh do not forget to check the plug first sometimes an over enthusiastic mechanic unplugs or tampers with these to get you to do more work check the plugs well and wires they are easily fixed

Posted on Jun 14, 2008

TDISLine
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SOURCE: Actually I have 3 codes

1. Check up the intake system for air leaks. Just spray carburretor cleaner product around intake manifold area, engine idling. If the engine rpm will raise up, there are air leaks. Replace intake manifold gasket, and test again the engine for air leaks. Check up also the exhaust pipes for air leaks. Inspect the exhaust pipes for gases leaks. Repair & replace bad components if necessary. If everything is all right regarding air leaks, and the fault code 171 still occurs, replace the bank 1 upstream oxygen sensor.
2. If the CKP sensor has been changed with new one, just replace the Camshaft Position (CMP) sensor, and test again the engine. If the fault code 320 still occurs, check the harness wire by wire & connection plugs pins, and repair damages. This code must be erased definitely.
3. Replace ignition coil and test again the engine. The fault code 351 must be erased definitely.

Good Luck!

Posted on Mar 10, 2011

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