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



 VIEW    REPLY TO THIS MESSAGE    PRINT   SAVE 

ABS Transient protector/ Circuit Breaker/ Relay 900 1993

posted by  B.B. on  Thu May 9 16:51 CST 2024
Author: [PROFILE] [EVERY POST] [THREADS] [BEST POSTS] RSS Feed     [IGNORE ALL POSTS]
last visit: Mon Oct 6 13:15 CST 2014
[RELATED]

Thanks Spook and Art, two Brickboard champs!

I finally got this critter out and there's a SPST relay and a resistor
and a BYZ50K22 Transient Voltage protector diode (press fit into a husky heat sink) It measures open in both directions.
Mouser has it for $3.15

https://www.mouser.com/ProductDetail/Diotec-Semiconductor/BYZ50K22?qs=OlC7AqGiEDl0NAr27G1lDw%3D%3D

Now Go to Scandix and see what they want for the relay 200+ EU
Plus a gigantic core charge .... Yikes!

Art this is across the 12V input to the ABS controller. Used up to 1993 in the 940, then 94 they dropped it - dunno if the 1994 ABS controller has a
voltage suppression diode instead of the external with the relay.

Or did Volvo just forget that diode altogether in 1994?

The 1993 940 pinout for 2/18 Transient protection relay:
pin 1 Battery +12V (this leg has the 10 amp ATC fuse)
pin 2 +12V to ABS controller pin 1
pin 3 Gnd
pin 4 +12V from ignition swich #151

Dunno if I want to replace the diode or jump 12V to the ABS module like they do in the 1994. It's fed off the ignition switch #151 and they use a spare fuse--F24 and it's a 15 amp and not a 10, direct to power that ABS module.
I don't know yet how much current the ABS module uses and certainly don't want
to blow up ignition switches with too much current.

Now to see if I can source a diode locally.

Art, does your website have a e-mail link, I'll send you the schematics

Bill






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.