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02 CAmry codes P1120 & P1121

  #1  
Old 01-05-2017, 04:46 PM
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Lightbulb 02 CAmry codes P1120 & P1121

My daughter's 02 Camry just started getting these 2 codes. Symptoms are a slow response when the throttle pedal is pressed. I read somewhere else to check voltages at the TPS on the pedal. However, that post was 4 years ago and the individual never reposted the voltage. Hopefully, someone one can help. Below are the voltages I got from back probing the TPS. all measurement taking with the key switch on. Just want to make sure its the TPS.


VPA/Blue-yellow wire - Pedal at idle no voltage. Pushing down on pedal voltage climbs to 3.28


VPA2/White-Red - Pedal at idle voltage read 1.54 detected. Pushing down on pedal voltage climbs to 4.21.


VCP/Red wire & VCP2/ Black-Red - 5.1 voltage at all pedal positions.
 
  #2  
Old 01-05-2017, 06:22 PM
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this a 4 or a V6



now need someone with the repair manual data to verify readings

this site you have to scroll though every page of the 2001 camry pdf to find information required

http://manuals.co/workshop/toyota/camry



02 toyota camry e manuals and most other repair manual sites are not free

haynes US online download

https://haynes.com/en-us/toyota-camr...-online-manual

 

Last edited by dirty hands; 01-05-2017 at 09:01 PM.
  #3  
Old 01-05-2017, 06:33 PM
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It's a V6
 
  #4  
Old 01-05-2017, 06:59 PM
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All the TPS troubleshooting I see deals with the TPS on the throttle body. This car may have a sensor on the throttle body, but it also has a sensor on the accelerator pedal as well and that the one I tested.
 
  #5  
Old 01-05-2017, 08:05 PM
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P1121 = APS sensor faulty. Harness has open, short or poor conductivity.
P1120 means ECU has shut down power to throttle motor.

VPA voltage
Released 0.4-1.2v
Depressed 3.0-4.6v

VPA2
0.9-2.3v
3.4-5.0v

The pedal has two potentiometers gained together (VPA and VPA2 are the wipers).

No power at VPA released means a problem.
 
  #6  
Old 01-05-2017, 09:00 PM
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thanks ...found the pedal sensor picture

too much electronics on cars these days
 
Attached Thumbnails 02 CAmry codes P1120 & P1121-s-l225.jpg  
  #7  
Old 01-06-2017, 11:02 PM
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Originally Posted by toyomoho View Post
P1121 = APS sensor faulty. Harness has open, short or poor conductivity.
P1120 means ECU has shut down power to throttle motor.

VPA voltage
Released 0.4-1.2v
Depressed 3.0-4.6v

VPA2
0.9-2.3v
3.4-5.0v

The pedal has two potentiometers gained together (VPA and VPA2 are the wipers).

No power at VPA released means a problem.
No power to the VPA (Would that mean a faulty sensor?)
 
  #8  
Old 01-07-2017, 12:24 PM
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Based on the criteria provided by Toyota yes.

P1121 is the actual trouble code. See list of possible faults in your above post.

P1120 is a response to P1121. This being the ECU shut down power throttle motor.
 
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