Audio, Video & Electronics Post questions, reviews, and other general info about the G's Nav, sound system, satellite radio or aftermarket stereos

Seatbelt light malfunction?

Old 02-15-2010, 08:23 PM
  #1  
redfoster
Registered User
Thread Starter
 
redfoster's Avatar
 
Join Date: Oct 2009
Location: Halifax, NS
Posts: 104
Likes: 0
Received 2 Likes on 2 Posts
Seatbelt light malfunction?

Has anyone else had a problem with the Driver "no seatbelt" light coming on randomly while driving? I've noticed in the last couple of days I can replicate it coming on when letting off the gas quickly when driving over 50 kmph or braking to a stop. I'm taking it in later this week to get check but it's really weird. And yes I've checked repeatedly that my belt has cleanly and securely clicked in correctly.
Old 02-16-2010, 06:10 AM
  #2  
J2S2M
Registered User
iTrader: (22)
 
J2S2M's Avatar
 
Join Date: Apr 2008
Posts: 1,794
Received 9 Likes on 7 Posts
I also experience this in my 08 sedan.. it has happened maybe handful of times in 2 years of ownership. How do you replicate the malfunction? If you know a way, let me know as well, so that I can take my car in to have it fixed.
Old 02-16-2010, 10:31 AM
  #3  
I_am_J5
Registered Member
iTrader: (1)
 
I_am_J5's Avatar
 
Join Date: Jan 2010
Location: Houston, TX
Posts: 35
Likes: 0
Received 1 Like on 1 Post
The "No seatbelt" warning light is the same indicator for both the driver and passenger i believe. If you have something in your passenger seat, like a backpack or something that has some weight to it, it might trigger the weight sensor to "think" that there is a person in your passenger seat causing the "no seatbelt" warning light to trigger.
Old 02-16-2010, 05:26 PM
  #4  
redfoster
Registered User
Thread Starter
 
redfoster's Avatar
 
Join Date: Oct 2009
Location: Halifax, NS
Posts: 104
Likes: 0
Received 2 Likes on 2 Posts
Originally Posted by I_am_J5
The "No seatbelt" warning light is the same indicator for both the driver and passenger i believe. If you have something in your passenger seat, like a backpack or something that has some weight to it, it might trigger the weight sensor to "think" that there is a person in your passenger seat causing the "no seatbelt" warning light to trigger.
I was thinking about that the other day and can't recall if I had anything on the seat or not. Haven't been able to replicate it. *sigh*
Old 04-14-2019, 03:17 PM
  #5  
PNW_IPL
Registered Member
iTrader: (5)
 
PNW_IPL's Avatar
 
Join Date: Mar 2016
Posts: 3,048
Received 543 Likes on 435 Posts
Bumping. My seatbelt light flashes while belt is buckled. I'm thinking the sensor in the receptacle is bad? Anyone s
Else?
Old 10-17-2019, 09:15 PM
  #6  
PNW_IPL
Registered Member
iTrader: (5)
 
PNW_IPL's Avatar
 
Join Date: Mar 2016
Posts: 3,048
Received 543 Likes on 435 Posts
So I download obd fusion app with the extra Infiniti stuff and was able to get the code b2454. Anyone know if there's a fuse under the hood?



Old 10-17-2019, 09:45 PM
  #7  
ILM-NC G37S
Registered Member

iTrader: (3)
 
ILM-NC G37S's Avatar
 
Join Date: Apr 2014
Location: NC
Posts: 4,060
Received 1,250 Likes on 1,012 Posts
According to the FSM, fusibile link "G" (30amp), feeds only the pre-crash seat belt control unit. This link is in the black box located in front of the battery.
Old 10-17-2019, 10:16 PM
  #8  
PNW_IPL
Registered Member
iTrader: (5)
 
PNW_IPL's Avatar
 
Join Date: Mar 2016
Posts: 3,048
Received 543 Likes on 435 Posts
Thanks man. Is this the fuse link? Do I replace the entire thing? I assume PSB means PRE-CRASH SEAT BELT?




Old 10-17-2019, 10:26 PM
  #9  
ILM-NC G37S
Registered Member

iTrader: (3)
 
ILM-NC G37S's Avatar
 
Join Date: Apr 2014
Location: NC
Posts: 4,060
Received 1,250 Likes on 1,012 Posts
In your pic it is the red "box" From what I understand the whole link has to be replaced. Double check to make sure the link is bad by checking Pin #2 at the PSB Control Unit for voltage.
Old 10-17-2019, 10:29 PM
  #10  
PNW_IPL
Registered Member
iTrader: (5)
 
PNW_IPL's Avatar
 
Join Date: Mar 2016
Posts: 3,048
Received 543 Likes on 435 Posts
Originally Posted by ILM-NC G37S
In your pic it is the red "box" From what I understand the whole link has to be replaced. Double check to make sure the link is bad by checking Pin #2 at the PSB Control Unit for voltage.
Thank you sir!
Old 10-17-2019, 11:23 PM
  #11  
PNW_IPL
Registered Member
iTrader: (5)
 
PNW_IPL's Avatar
 
Join Date: Mar 2016
Posts: 3,048
Received 543 Likes on 435 Posts
So the fusible link in good. What is the pre crash seat belt motor? Is this the seatbelt receptacle? How would I test it?
Old 10-18-2019, 09:56 AM
  #12  
ILM-NC G37S
Registered Member

iTrader: (3)
 
ILM-NC G37S's Avatar
 
Join Date: Apr 2014
Location: NC
Posts: 4,060
Received 1,250 Likes on 1,012 Posts
The FSM only says that for code B2454 you should check that the control module has power by checking the wire harness;


Nearest I can guess, somewhere behind the glove box (near the ECU perhaps) is the PSB control unit. Locate and disconnect the harness connector and verify you have good, constant voltage at harness terminal #2 (thicker gauge wire). The code refers refers to a open line or short in this circuit.

From there, if everything checks out, unfortunately the FSM says to replace the control unit.

Last edited by ILM-NC G37S; 10-18-2019 at 10:35 AM.
The following users liked this post:
PNW_IPL (10-18-2019)
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
ethan10502
G37 Sedan
4
01-15-2019 12:26 PM
TimCC23
G37 Sedan
5
10-27-2014 02:58 AM
CrackHeadMonsta
Body Interior Exterior Lighting
8
11-15-2013 05:33 PM
MP-In-The-Wind
General Tech Questions
3
02-01-2013 11:30 AM
sobi6111
Body Interior Exterior Lighting
15
05-07-2011 08:39 AM


Thread Tools
Search this Thread
Quick Reply: Seatbelt light malfunction?



All times are GMT -4. The time now is 07:34 PM.