SaturnFans.com
what's new (beta) - classifieds - forums - photos


Go Back   SaturnFans.com Forums > Models > Saturn Ion > Ion Tech
Register FAQ Members List Groups Calendar Chat Room Search Today's Posts Mark Forums Read

Reply
 
Thread Tools Display Modes
Old 05-28-2015, 09:03 AM   #1
07saturnion
Junior Member
07saturnion has a spectacular aura about07saturnion has a spectacular aura about07saturnion has a spectacular aura about
 
Join Date: Oct 2014
Posts: 29
Default Can't figure it out, Code P2138, P2122

Okay all of you smart people out there, I need some help.
I've searched and done all I can before asking for input. Thanks for all the tips on the Forum.

Background: ION, 2.2l, 106K
About a month ago my wife's car threw the P2138 code, and P2122. So I replaced the gas pedal. It threw the same code a week later. (that's when I knew it probably wasn't the pedal after all) Then I found the connector behind the left kick panel. Cycled and dilectric grease on it. Code came back again. I then disconnected the battery for an hour. Code came back. I've pulled the Fuse 9. Code came back.

Son of a biscuit eater, I can't figure out what this thing is doing....
Ideas?
Thanks a lot

REWARD EXCELLENCE!

Add to 07saturnion's Reputation
Rate the quality of this post and help 07saturnion reputation points. Click the reputation button near the bottom left corner of this message box. Thank you!
07saturnion is offline   Reply With Quote
SaturnFans.com Sponsored Links
Old 05-28-2015, 07:49 PM   #2
Samtherecordman
Advanced Member
Samtherecordman is on a distinguished road
 
Samtherecordman's Avatar
 
Join Date: Oct 2007
Location: Moncton, N.-B. Canada
Posts: 533

2007 ION-3 Quad Coupe
Default Re: Can't figure it out, Code P2138, P2122

I came across the same problem at one point and time and I did the same thing which was to replace the gas pedal and that did not fix my problem.


But Just out of curiosity, disconnect your ECM Connectors etc and very carefully inspect to see you don't have any "Bent" pins or "Pushed In" pins, as that has happen to me in the past.

********P2138

The voltage difference between APP sensor 1 and APP sensor 2 exceeds a predetermined value for more than 2 seconds .

Action Taken When the DTC Sets

DTC P2120, P2122, P2123, P2125, P2127, P2128, and P2138 are Type A DTCs.
The control module commands the TAC system to operate in the Reduced Engine Power mode.
A message center or an indicator displays Reduced Engine Power.
Under certain conditions the control module commands the engine OFF.

Conditions for Clearing the MIL/DTC

DTC P2120, P2122, P2123, P2125, P2127, P2128, and P2138 are Type A DTCs.

Circuit/System Verification

Ignition ON, observe the scan tool APP sensor 1 voltage parameter. The reading should be between 0.13-4.87 volts and change with accelerator pedal input.
Ignition ON, observe the scan tool APP sensor 2 voltage parameter. The reading should be between 0.13-4.87 volts and change with accelerator pedal input.
Ignition ON, observe the scan tool APP Sensor 1 and 2 parameter. The scan tool should indicate agree.
Clear the DTCs with the scan tool. Operate the vehicle within the Conditions for Running the DTC, or within the conditions that you observed from the Freeze Frame/Failure Records.
Verify that DTC P2120 or P2125 are not the only accelerator pedal position DTCs set.

If DTC P2120 or P2125 are the only DTCs set, replace the control module.

Verify that DTCs P0641 or P0651 are set.

If DTC P0641 or P0651 are set, refer to DTC P0641 or P0651. See: P0641

Circuit/System Testing

Ignition ON, disconnect the accelerator pedal harness connector at the accelerator pedal. Allow sufficient time for the ECM to power down.
Test for less than 3 ohms of resistance between each low reference circuit terminals A and D and ground.

If greater than 3 ohms , test the low reference circuit for an open/high resistance. If the circuit tests normal, replace the ECM.

Ignition ON, test for 4.8-5.2 volts between each 5-volt reference circuit terminals C and F and ground.

If less than 4.8 volts , test affected 5-volt reference circuit for an open/high resistance or short to ground. If the circuit tests normal, replace the control module.
If greater than 5.2 volts , test affected 5-volt reference circuit for a short to voltage. If the circuit tests normal, replace the control module.

Ignition ON, verify the scan tool APP sensor 1 and 2 voltages are less than 0.1 volt .

If greater than 0.1 volts , test the APP sensor 1 and 2 signal circuits terminals B and E for a short to voltage. If the circuit tests normal, replace the ECM.

Install a 3A fused jumper wire between the signal circuit terminal E and the 5-volt reference circuit terminal F of the APP sensor 1, and verify the APP sensor 1 voltage is greater than 4.8 volts .

If less than 4.8 volts , test the APP sensor 1 signal circuit for an open, or short to ground. If the circuit tests normal, replace the control module.

Install a 3A fused jumper wire between the signal circuit terminal B and the 5-volt reference circuit terminal C of the APP sensor 2, and verify that the APP sensor 2 voltage is greater than 4.8 volts .

If less than 4.8 volts , test the APP sensor 2 signal circuit for an open/high resistance, or short to ground. If the circuit tests normal, replace the control module.

Ignition OFF, disconnect the harness connector at the ECM.
Test for less than 5 ohms of resistance on all APP sensor circuits between the following terminals:

ECM C1 signal circuit terminal 47 to APP terminal E
ECM C1 signal circuit terminal 49 to APP terminal B
ECM C1 5-volt reference circuit terminal 35 to APP terminal C
ECM C1 5-volt reference circuit terminal 33 to APP terminal F
If greater than 5 ohms , repair the affected circuit.

Test for infinite resistance between APP sensor 1 signal circuit terminal E and APP sensor 2 signal circuit terminal B.

If less than infinite resistance, repair the short between APP sensor 1 signal circuit and APP sensor 2 signal circuit.
If all circuits test normal, replace the accelerator pedal.

Component Testing

Important: Circuit/System Testing must be performed before proceeding with Component Testing.

Dynamic Test

Install a 3A fused jumper wire between the 5-volt reference terminal of the applicable APP sensor and 5 volts . Install a jumper wire between the low reference terminal and a ground.
Sweep the sensor through the entire range while monitoring the voltage between the signal terminal and the low reference terminal with a DMM. the voltage should vary between 0.30-4.98 volts with out any spikes or dropouts.

If the voltage is not within the specified range or is erratic, replace the accelerator pedal assembly.

Repair Instructions

Perform the Diagnostic Repair Verification after completing the diagnostic procedure. See: Verification Tests

Accelerator Pedal Position Sensor Replacement
Control Module References. See: Testing and Inspection\Programming and Relearning

********P2122

The ECM detects that the APP sensor 1 voltage is less than 0.13 volt for more than 0.4 second .

...
Saturn Ion 3 Quad Coupe 3 with Sports Appearance package with Aura Pro Bass Shakers under the front seats, Kenwood Excelon Mono Amplifier and Infinity Kappa Perfect and I'm In Heaven!!!!

REWARD EXCELLENCE!

Add to Samtherecordman's Reputation
Rate the quality of this post and help Samtherecordman reputation points. Click the reputation button near the bottom left corner of this message box. Thank you!
Samtherecordman is offline   Reply With Quote
Old 06-01-2015, 08:48 AM   #3
07saturnion
Junior Member
07saturnion has a spectacular aura about07saturnion has a spectacular aura about07saturnion has a spectacular aura about
 
Join Date: Oct 2014
Posts: 29
Default Re: Can't figure it out, Code P2138, P2122

The connectors to the ECM have never been removed since new. I'll check but it's almost impossible a bent pin could be the issue.

Today it's also throwing code P0833, which is the clutch switch.
This switch was replaced about a year ago, and the code hasn't been back since. Why would this code come up again so soon?

Could it be my ECM is the issue?

REWARD EXCELLENCE!

Add to 07saturnion's Reputation
Rate the quality of this post and help 07saturnion reputation points. Click the reputation button near the bottom left corner of this message box. Thank you!
07saturnion is offline   Reply With Quote
Reply



Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump

Similar Threads
Thread Thread Starter Forum Replies Last Post
Could use some help - p2122, p2127, p2138 2007 Saturn Ion L2 2.2L rtkenwa Ion Tech 10 05-03-2015 04:12 AM
Ion 2 intermittant code P2138 and limp mode BigRedIon Ion General 2 06-04-2014 09:46 PM
08 VUE XR AWD engine code P0335 and P2138 mmmkkk 2008 Vue 3 02-01-2013 08:03 PM
P2138 Error Code RiversideAstra Astra Tech 2 07-18-2012 05:26 PM
Code P2138 08 Veu v8 AnxietyTrip 2008 Vue 5 06-26-2011 12:17 PM


All times are GMT -5. The time now is 08:03 PM.

Advanced Forum Search | Advanced Photo Search


Powered by vBulletin® Version 3.8.9
Copyright ©2000 - 2018, vBulletin Solutions, Inc.
SaturnFans.com. The Saturn Enthusiasts Site.