So I got the flashing CEL, VSC, TC & Dealer said...
Good thing this happened before the basic warranty was up!
02-06-2010, 09:39 PM
#23
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Well I went to the dealership and they told me it was bc of my aftermarket intake. Which i can say that my filter my have thrown oil on the mass air flow sensor but this light came on b4 i put the aftermarket intake on. Either way i was still out of warranty and they didnt bother to say anything about a harness problem. I asked the service tech and he said he hasnt heard anything about this yet. So if it happens again ill just pay out of pocket for the harness i guess....
02-11-2010, 02:15 AM
#25
OK, I went to work and pulled this up from ALLDATA in the TSB (Technical Service Bulletin) section for the 08 XB. Seems the problem part is the whole eng harness and they have changed it for the 09 & up...
S-SB-0050-08
November 12, 2008
M.I.L. "ON" DTC P0101, P0172, P035 #, P2237 or P2238
Service Category
Engine/Hybrid System
Section
Engine Control
Market
USA
Applicability
Introduction
Some 2008 - 2009 model year xB vehicles may exhibit a M.I.L. "ON" with one of the following Diagnostic Trouble Codes (DTCs):
^P0101 - Mass Air Flow Circuit Range / Performance Issue
^P0172 - System Too Rich
^P035 # - Ignition Coil '# ' Primary / Secondary Circuit
^P2237 - Oxygen (A/F) Sensor Pumping Current Circuit / Open
^P2238 - Oxygen (A/F) Sensor Pumping Current Circuit Low
An improved engine wire harness has been developed and implemented in production to address this condition. Use the following repair procedure to diagnose and repair customer complaint vehicles.
Production Change Information
This TSB applies to vehicles produced BEFORE the Production Change Effective VINs shown.
S-SB-0050-08
November 12, 2008
M.I.L. "ON" DTC P0101, P0172, P035 #, P2237 or P2238
Service Category
Engine/Hybrid System
Section
Engine Control
Market
USA
Applicability
Introduction
Some 2008 - 2009 model year xB vehicles may exhibit a M.I.L. "ON" with one of the following Diagnostic Trouble Codes (DTCs):
^P0101 - Mass Air Flow Circuit Range / Performance Issue
^P0172 - System Too Rich
^P035 # - Ignition Coil '# ' Primary / Secondary Circuit
^P2237 - Oxygen (A/F) Sensor Pumping Current Circuit / Open
^P2238 - Oxygen (A/F) Sensor Pumping Current Circuit Low
An improved engine wire harness has been developed and implemented in production to address this condition. Use the following repair procedure to diagnose and repair customer complaint vehicles.
Production Change Information
This TSB applies to vehicles produced BEFORE the Production Change Effective VINs shown.
02-11-2010, 09:16 PM
#26
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The Vin break is listed at the bottom of that TSB. any vehicles produced before that posted VIN can be affected.
What more info are you looking for? You'll not be able to find out what was changed as dealers don't even get that kind of info.
What more info are you looking for? You'll not be able to find out what was changed as dealers don't even get that kind of info.
02-12-2010, 02:00 PM
#27
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Location: Little Rock, AR
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I hope this will help clear up some questions...
TSB # S-SB-0050-08 November 12, 2008
This TSB applies to vehicles produced BEFORE the Production Change Effective VINs shown below.
AUTOMATIC TRANS VIN# JTLKE50E*91067111
MANUAL TRANS VIN# JTLKE50E*91067112
TSB # S-SB-0050-08 November 12, 2008
This TSB applies to vehicles produced BEFORE the Production Change Effective VINs shown below.
AUTOMATIC TRANS VIN# JTLKE50E*91067111
MANUAL TRANS VIN# JTLKE50E*91067112
02-12-2010, 08:37 PM
#28
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02-12-2010, 08:44 PM
#29
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02-13-2010, 02:24 AM
#31
! -- I'll repeat: "Also, the suggestion of the TSB is the coil pack "problem" is actually the fault of the harness, not the coil packs. Any further info available?" That is to say, I'm wondering whether the coil packs are a genuine problem, or just a symptom of the wiring harness issue. Thanks 
!
02-13-2010, 10:46 PM
#32
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"Also, the suggestion of the TSB is the coil pack "problem" is actually the fault of the harness, not the coil packs. Any further info available?" That is to say, I'm wondering whether the coil packs are a genuine problem, or just a symptom of the wiring harness issue. Thanks !
!
02-15-2010, 06:55 PM
#34
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I've been with Toyota for almost 9 1/2 years. In that time I've sold maybe 5 coils. usually because someone "thought" the outer boot on an old coil was replaceable and ripped it off. New coil designs do not have this boot.
I would guess that the harness is somehow damaging the coil but this is purely hear-say as I've got no proof of that. I figure that has to be right as generally the same location of coil fails on the xB.
I would guess that the harness is somehow damaging the coil but this is purely hear-say as I've got no proof of that. I figure that has to be right as generally the same location of coil fails on the xB.
02-17-2010, 12:21 AM
#38
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Join Date: Feb 2008
Posts: 1
This has happened to my 08 about a year ago. First they replace the harness as per the tsb. Then a few weeks later the problem came back and then they replace one of the coils. Few weeks later same thing again and this time they replaced all four coils. It turns out since one of the coils were defective it caused other coils to fail also. Well that's what they told me anyways but since then it hasn't come back.
02-17-2010, 01:51 AM
#39
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Well heres the verdict. The guy last night cleared my codes before the head mech could look at it today . So just going off those codes they say the wheel sensor got wacky from the snow. But he did say there was a lot of stuff in the readings that didn't make sense. Well first off i can live with a wheel sensor kicking off my abs aND TRACTION CONTROL and the cel. But heres my problem all waring lights came on at once when it first happend and the wipers stopped working elec steering stopped and lights dimmed. Shut car off restarted and then the abs traction light and cell came on. So im sure it will happen again. But hope it doesn't.
02-19-2010, 12:05 AM
#40
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WOW! That's about all I can say....wow! Please keep us posted if things happen again. Sounds like there were way too many systems involved for it to just be coils. Something is up. What year modle is your B? Does it land within the vin codes listed in the TSB sheet? Did they record the codes they found? Wow!