The message to which you are about to reply is shown first. GO TO REPLY FORM



 VIEW    REPLY TO THIS MESSAGE Replies to this message will be emailed.    PRINT   SAVE 

CSI code may be due to a wiring change 700 1990

uid 18083's pic
posted by  lucid on  Mon Feb 14 09:02 CST 2011
Author: [PROFILE] [EVERY POST] [THREADS] [BEST POSTS] RSS Feed     [IGNORE ALL POSTS]
last visit: Fri Oct 24 12:31 CST 2014
[RELATED]

"Cold start injector harness to ECU 32 is 7 Meg Ohms to ground."

What does your source say you should see there?

I'd say it's probably normal, since the Cold Start Injector ground side should be "open" until the ECU grounds it, and then only when the engine is COLD (below23°F). Anyway, that 3-2-1 code is probably due to TSB (Tech service Bulletin, Group 23, No. 135) from 1990, to correct over-rich cold running.

The TSB wiring change moved the CSI 12V source from the common side of the injectors to a terminal on the starter that is only active when cranking. A side-effect of this TSB was a permanent 3-2-1 code, but with no resulting CELight. So if you've got the code but no CEL, the TSB was applied and the code is now meaningless.



--
Bruce Young, '93 940-NA (current), 240s (one V8), 140s, 122s, since '63.






USERNAME
Use "claim to be" below if you don't want to log in.
PASSWORD
I don't have an account. Sign me up.
CLAIM TO BE
Use only if you don't want to login (post anonymously).
ENTER CAPTCHA CODE
This is required for posting anonymously.
OPTIONS notify by email
Available only to user accounts.
SUBJECT
MODEL/YEAR
MESSAGE

DICTIONARY
LABEL(S) +
IMAGE URL *
[IMAGE LIBRARY (UPLOAD/SELECT)]

* = Field is optional.

+ = Enter space delimited labels for this post. An example entry: 240 muffler


©Jarrod Stenberg 1997-2022. All material except where indicated.


All participants agree to these terms.

Brickboard.com is not affiliated with nor sponsored by AB Volvo, Volvo Car Corporation, Volvo Cars of North America, Inc. or Ford Motor Company. Brickboard.com is a Volvo owner/enthusiast site, similar to a club, and does not intend to pose as an official Volvo site. The official Volvo site can be found here.