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2007 Escalade ESV modded out, 2013 ATS LUX 2.5L
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144 Posts
Discussion Starter · #1 ·
All, I have a airbag light on my cluster and had the code read to be a b0079. So i bought a seat position sensor thinking that was the problem. I changed it out but the light is still on. What do I need to do?

Thanks,

Andrew
 

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2010 Escalade ESV
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127 Posts
I believe you will still need to replace the impact sensor. I had this same code on a Tahoe I used to own and after replacing the impact sensor it cleared.


B0079 Left Front Seat Position Sensor Circuit

B0081 Passenger Presence System

DTC B0077, B0078, B0079, B0080, B0081, or B0082
Left Front/Driver Side Impact Sensor (SIS) Circuit

Service Information 2007 Chevrolet Silverado - 2WD | Sierra, Silverado (VIN C/K) Service Manual | Document ID: 1892094 #07-09-41-002: Air Bag Light On, DTC B0081 Set (Clear DTC Using Specific Procedure) - (Jan 29, 2007)

Subject:Air Bag Light On, DTC B0081 Set (Clear DTC Using Specific Procedure)

Models:2007 Cadillac Escalade, Escalade ESV, Escalade EXT
2007 Chevrolet Avalanche, Silverado, Suburban, Tahoe
2007 GMC Sierra, Yukon, Yukon Denali, Yukon XL, Yukon Denali XL

Condition:
Some customers may comment on the airbag light being illuminated. Upon investigation, the technician may find DTC B0081 with symptom code 0F, 3A, 39 or 71 set.

Correction:
The Sensing and Diagnostic Module (SDM) should NOT be replaced when DTC B0081 sets. The SDM sets DTC B0081 only to report that there is no communication with the Passenger Presence System (PPS) module or that the PPS module has reported a fault. It is important that when the B0081 fault is reported by the SDM, the DTCs from the PPS be retrieved and addressed first per the procedure below. After the PPS module DTCs have been addressed, turn the ignition off, open the driver's door, and wait 40 seconds for the PPS module to go to sleep.

1. When DTC B0081 71 sets, inspect wiring and connections for a possible loss of communication between the SDM and PPS module. Inspect front passenger seat connector to the PPS module and seat connector to the seat harness.

Do not replace the SDM module for a DTC B0081 71 condition. The SDM will set B0081 3A indicating that a wrong PPS module has been installed on the vehicle. Verify the condition before replacing the known wrong PPS module with a correct one. Use service information to reprogram and set up a new PPS module.

The SDM will set B0081 0F and B0081 39 indicating that the PPS module has reported a fault to the SDM. Retrieve the DTCs from the PPS module and address those first. The PPS may continue to send it has a fault to the SDM for the above conditions, though there are no active faults reported by the PPS, until the steps in the note below are taken.

Important: DTC B0081 will not clear until the low speed bus goes to sleep. To clear DTC B0081, turn the Ignition off, open the driver's door and wait 40 seconds for the PPS to go to sleep. Turn the ignition to run and retrieve vehicle DTCs. If all the codes have been cleared from the PPS, DTC B0081 in the SDM will not be active and only be in history.
 

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2007 Escalade ESV modded out, 2013 ATS LUX 2.5L
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144 Posts
Discussion Starter · #3 ·
What impact sensor did you replace and what year tahoe did you have? Was it an 07? I have read several places that with the new body style gm changed the codes to read different.
 

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2010 Escalade ESV
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127 Posts
that sensor was on my 05 and when I just googled it as 2005 GM code B0079 it's the same as 2007. I too thought it was the seat sensor but it turned out it was the impact sensor.....my sensor was the passenger side one under the front bumper.
 

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2007 Escalade ESV modded out, 2013 ATS LUX 2.5L
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144 Posts
Discussion Starter · #7 ·
So this morning I thought maybe i check the wires for continuity. That is fine it looks like. Will need to check for the connection at the plug to sensor.
 

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2007 Escalade ESV modded out, 2013 ATS LUX 2.5L
Joined
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144 Posts
Discussion Starter · #8 ·
Does anyone have the wiring diagram/schematics for the driver side seats? I think I may have a pinch in the wire somewhere. I checked for continuity this morning on each wire but did not think to check if it crossed. It looks like I may have one that is somehow cross/pinched.
 
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