Terrain FWD L4-2.4L (2010)
Wiring Harness: Customer Interest
Restraint System - SIR Light On, DTC B0014/B0021 Set
TECHNICAL
Bulletin No.: 11-09-41-001
Date: March 10, 2011
Subject: SIR Light On, DTC B0014 and/or B0021 Set in Sensing and Diagnostics Module (SDM)
Models:
2010-2011 Chevrolet Equinox
2010-2011 GMC Terrain
Condition
Some customers may comment that the SIR light is on, or has been on recently.
When checking the vehicle for DTCs, the SDM may report any of the following codes: B0014 02, B0014 04, B0014 0D, B0014 0E, B0021 02, B0021
04, B0021 0D or B0021 0E.
This condition may be duplicated by moving the front seat forward and backward or by bouncing on the lower cushion on the affected side.
Cause
The codes can be set when the SDM senses a change in resistance in the circuit for the seat mounted side impact side airbag. The change in resistance
can be small and it can be temporary, but the SDM can still sense the change and set a code. In this case, the airbags will work as intended in a crash but
the system should be checked for the cause of the resistance change. The source of the issue can be at or in the connector that connects the airbag from
the seat to the body harness. Connector X304 (B0014 LF Side Deployment Loop) is located under the driver seat cushion and connector X303 (B0021
RF Side Deployment Loop) is located under the passenger seat cushion.
Correction
Replace the driver and passenger seat back harness to seat cushion harness connectors with service kit, P/N 20968489. The two gray connector
(Christmas tree style) retainers provided in the kit will not be used. The new connector will be secured to the seat using clip, P/N 19258316. Follow the
steps below.
Important
DO NOT replace the sensing and diagnostic module (SDM), side sensors or air bag modules.
Important
Both driver and passenger seats must be repaired when this concern occurs even if only one DTC code is set. The service kit contains sufficient
components to repair both seat connectors.
1. Disable the SIR system. Refer to SIR Disabling and Enabling in SI.
Note
Only use hand tools to remove the seat to floor mounting bolts. If there are any problems with bolt removal, refer to Corporate Bulletin Number
10-08-50-002.
2. Remove the seat to floor rear mounting bolts. Loosen the seat from the front hooks and tilt it back to expose the underside of the seat. Refer to
Driver or Passenger Seat Replacement procedure in SI.
3. Disconnect the seat to body harness connector. Disconnect the seat airbag connector.
