Lambda Sensors 12V Source
#1
Lambda Sensors 12V Source
Hello all,
Some help please,
I want to cancel the lambda sensors, just two of them downstream on my car, through simulator(s) unit.
I use the XJ SEDAN 1995 electrical guide, pages for AJ16 NA ROW, where my car belongs.
The simulator unit(s) require three connections:
PI104-34, marked as O-output
PI105-2, marked as I-input and
PI105-24, marked as O-output
How to proceed ?
Any help is very appreciated,
Thank you,
Panagiotis
Some help please,
I want to cancel the lambda sensors, just two of them downstream on my car, through simulator(s) unit.
I use the XJ SEDAN 1995 electrical guide, pages for AJ16 NA ROW, where my car belongs.
The simulator unit(s) require three connections:
- sensor ground wire, which I locate, for both sensors, at the wiring of pin PI105-8
- sensor signal wire, which I locate at the wiring of pins PI105-16 and PI105-18
- sensors 12V source, which I can not locate.
- common for both sensors heaters, wiring to pin PI104-4
- common to both sensor heaters, wiring coming from RH ENGINE BAY FUSE BOX, through a 10A fuse, marked as RS6, colored WG.
PI104-34, marked as O-output
PI105-2, marked as I-input and
PI105-24, marked as O-output
How to proceed ?
Any help is very appreciated,
Thank you,
Panagiotis
Last edited by panagiotis; 05-22-2015 at 11:56 AM.
#2
Join Date: Feb 2014
Location: Crossroads of America
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Hi panagiotis,
If I read the schematic correctly, the ignition-switched 12V for the lambda sensor heaters arrives on the White wires with Green tracer lines (WG), from Fuse 14 (10A) in the RH Engine Bay Fuse Box.
The other side of the heaters (their earth/ground path) connects to terminal PI104-4 of the ECM via the Blue wire with Pink tracer line (UK).
Hopefully someone with better eyesight than mine will either confirm or correct me!
Cheers,
Don
If I read the schematic correctly, the ignition-switched 12V for the lambda sensor heaters arrives on the White wires with Green tracer lines (WG), from Fuse 14 (10A) in the RH Engine Bay Fuse Box.
The other side of the heaters (their earth/ground path) connects to terminal PI104-4 of the ECM via the Blue wire with Pink tracer line (UK).
Hopefully someone with better eyesight than mine will either confirm or correct me!
Cheers,
Don
Last edited by Don B; 05-22-2015 at 10:29 PM.
The following 2 users liked this post by Don B:
MountainMan (05-22-2015),
panagiotis (05-23-2015)
#3
#4
Join Date: Feb 2014
Location: Crossroads of America
Posts: 19,382
Received 12,726 Likes
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6,374 Posts
Yes, I believe you should be able to measure 12V from the WG wires to any good ground, since it is ultimately ignition-switched battery voltage you are measuring.
Please keep us informed!
Cheers,
Don
The following users liked this post:
MountainMan (05-25-2015)
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