C3 Tech/Performance V8 Technical Info, Internal Engine, External Engine, Basic Tech and Maintenance for the C3 Corvette
Sponsored by:
Sponsored by:

Computer Command Diagnosis Code

Thread Tools
 
Search this Thread
 
Old Jun 23, 2007 | 04:10 PM
  #1  
Skyhigh82's Avatar
Skyhigh82
Thread Starter
Racer
15 Year Member
 
Joined: Nov 2002
Posts: 364
Likes: 0
From: Potomac MD
Default Computer Command Diagnosis Code

My rear injector is not working. Jumped "A" and "B" and got a code 33 map sensor. It says to "check for open in ground CKT 469"; whats CKT 469?
Reply
Old Jun 23, 2007 | 04:24 PM
  #2  
V-Twin's Avatar
V-Twin
Burning Brakes
 
Joined: Feb 2000
Posts: 1,246
Likes: 1
Default

467 & 468 are the injector driver wires from the ECM to the injectors (green and blue, injector ground side), are you sure it's 469?
Reply
Old Jun 23, 2007 | 04:27 PM
  #3  
Skyhigh82's Avatar
Skyhigh82
Thread Starter
Racer
15 Year Member
 
Joined: Nov 2002
Posts: 364
Likes: 0
From: Potomac MD
Default

yup, page 6E-44 service manual
Reply
Old Jun 23, 2007 | 04:32 PM
  #4  
V-Twin's Avatar
V-Twin
Burning Brakes
 
Joined: Feb 2000
Posts: 1,246
Likes: 1
Default

the numbers refer to circuits connectors, splices..and so on. Look throigh the computer command & control wiring diagram, the numbers are in there.
Reply
Old Jun 23, 2007 | 07:41 PM
  #5  
DR.Jay's Avatar
DR.Jay
Burning Brakes
10 Year Member
 
Joined: Nov 2005
Posts: 1,143
Likes: 0
From: Leander Texas
Default

I believe the ground wire is the gray (it could also be black) wire in the harness that goes to the map sensor connector. This wire is also spliced to the throttle position sensor. This wire goes to the (b) connector, terminal pin 11 on the ECM.
Reply
Old Jun 23, 2007 | 09:49 PM
  #6  
Skyhigh82's Avatar
Skyhigh82
Thread Starter
Racer
15 Year Member
 
Joined: Nov 2002
Posts: 364
Likes: 0
From: Potomac MD
Default

I've looked through the entire service manual for 469; it's no where. Could it be a typo?
Reply
Old Jun 24, 2007 | 10:53 AM
  #7  
Skyhigh82's Avatar
Skyhigh82
Thread Starter
Racer
15 Year Member
 
Joined: Nov 2002
Posts: 364
Likes: 0
From: Potomac MD
Default

Thanks for the help it’s working now. I checked the fuses all good then I started a continuity test from the injectors back everything was good to the firewall; still no signal to rear injector. Pulled the connectors from the ECM and checked/cleaned them; still no signal to rear injector. I pulled the fuses again tested them and they were good. Then I noticed the prongs on the fuses were a little dirty looking so I sanded them with 320 wet/dry sandpaper and put them back and both injectors worked perfectly. Man, I’ve been troubleshooting this off and on for a week; I knew sooner or later I’d get it. It was running fine one day then the next not. Thanks for all the help.
Reply

Get notified of new replies

To Computer Command Diagnosis Code





All times are GMT -4. The time now is 02:41 AM.

story-0
10 Ugly Corvettes That We Still Kinda Love

Slideshow: 10 ugly Corvettes that we still kinda love.

By Joe Kucinski | 2026-06-03 10:34:17


VIEW MORE
story-1
Top 10 Most Expensive Corvettes Ever Sold on Bring A Trailer

A lot of money has changed hands at the online auction house over the years.

By Brett Foote | 2026-06-03 10:21:50


VIEW MORE
story-2
10 Things Every Corvette Owner Needs (2026 Edition)

Slideshow: 10 great gifts Corvette enthusiasts actually want for Father's Day!

By Michael S. Palmer | 2026-06-03 15:43:40


VIEW MORE
story-3
8 Most "Only Corvette Owners Understand" Quirks and Problems

Slideshow: These are the quirks, annoyances, and oddly lovable problems that every Corvette owner eventually learns to live with.

By Pouria Savadkouei | 2026-05-28 09:31:39


VIEW MORE
story-4
10 Reasons the C6 Z06 is Still A Performance Benchmark After 20 Years

Slideshow: 10 reasons why the C6 Z06 is still a performance benchmark after 20 years.

By Joe Kucinski | 2026-05-27 17:20:09


VIEW MORE
story-5
How Much Horsepower Every Corvette Engine "LOST" in 1972

Slideshow: How much horsepower every Corvette engine lost in 1972.

By Joe Kucinski | 2026-05-27 16:54:53


VIEW MORE
story-6
Top 10 DOs and DON'Ts for Protecting Your Convertible Top!

Slideshow: How to Protect A Convertible Top: 10 DOs & DON'Ts

By Michael S. Palmer | 2026-04-03 00:00:00


VIEW MORE
story-7
Top 10 Most Explosive Corvettes Ever Made: Power-to-Weight Ratio Ranked!

Slideshow: The 10 most explosive Corvettes ever built based on power-to-weight ratio.

By Joe Kucinski | 2026-05-20 07:23:03


VIEW MORE
story-8
150 hp to 1,250 hp: Every Corvette Generation Compared by the Specs That Matter

Slideshow: From C1 to C8 we compare every Corvette generation by the numbers.

By Joe Kucinski | 2026-05-12 16:54:12


VIEW MORE
story-9
8 Coolest Corvette Pace Cars (and Replicas) of All Time

Slideshow: Some Corvette pace cars became collectible legends, while others perfectly captured the look and attitude of their era.

By Verdad Gallardo | 2026-05-11 09:50:51


VIEW MORE