Restraints - SRS Lamp ON/Codes 9210/9200 Set
Date: October 26, 2007Order No.: P-B-91.60/108b
Supersedes: P-B-91.60/108a dated June 12, 2007
Group: 91
Revision History
Revision Date Purpose
b 10/26/07 Applicable Models Updated
a 6/12/07 Notes Added for Short Test and Returned Parts
-- 5/23/06 Initial Issue
SUBJECT:
Model 221.171/176/177/179/186
SRS Light Illuminated
If you receive customer reports in the above model vehicles of the SRS light being illuminated accompanied by either of the diagnostic fault codes listed below, perform the following repair procedure.
Note:
Replacement of the contact spiral is not necessary for this repair procedure. Returned contact spirals will be subject to testing and may be debited if found to be operational.
Fault Codes:
DTC 9200 - the resistance value in the ignition circuit containing component R12/13 is too high
DTC 9210 - the resistance value in the ignition circuit containing component R12/14 is too high
Note:
Short test printout from STAR Diagnosis required to be sent with returned connectors.
Procedure:
1. Adjust driver seat and steering column all the way back.
2. End internal on board electrical system functions.
^ Engage selector position 'P'
^ Switch off all electrical consumers
^ Turn transmitter key (A8/1) in EIS control unit (N73) to position '0'
^ Turn transmitter key (A8/1) in EIS control unit (N73) to position '2' and wait approximately 30 seconds
^ Turn transmitter key (A8/1) in EIS control unit (N73) to position '0' and leave in EIS unit (N73)
^ The internal on-board electrical functions are now ended. Refer to WIS AR54.10-P-0003-01SX.
3. Disconnect both battery ground cables. Disconnect the starter battery first, followed by the system battery. Refer to WIS AR54.10-P-0003SX.
4. Remove airbag unit from steering wheel. Refer to WIS document AR91.60-P-0660SX.
5. Remove the steering wheel. Refer to WIS document AR46.10-P-0100SX.
6. Remove the steering column module (SCM). Refer to WIS document AR54.25-P2800-01SX.
7. Remove cover under instrument panel. Refer to WIS document AR68.10-P-1500SX.
8. Remove trim strip on instrument panel. Refer to WIS document AR68.10-P-1180SX.
Note:
Later production cars have two additional screws that require removal. There is one at each end of the dashboard under the end covers (Figure 1).
9. Expose the SCM wiring harness. Unclip N80 connector from jacket tube by pushing on lock tabs (Figure 2). Follow harness through opening for the steering column and disconnect the cable anchor at the 3 o'clock position on the side of the column. The second cable anchor is located towards the bottom end of the jacket tube at approximately 6 o'clock. Cut the cable tie to release the harness and pull it down into the footwell (Figure 3).
10. Unplug the connectors from EIS (N73) through the opening behind the removed trim strip.
11. Remove the fabric tape from where section A and B of the harness are joined. Remove enough tape to expose the area of section A (circled) (Figure 4).
12. The repair harness is color coded to match the car side of the harness. Pins 1 and 8 of the N80 connector are both brown wires and can be connected to either brown wire on the car side of the harness.
Note:
Pins 3 and 11 of the N80 connector are both green and must not be interchanged.
13. Locate the green wire (0.5 GN) connected to terminal 11 of the N80 connector of the repair harness and cut it 350 mm from the end of the connector. Locate the green wire (0.5 GN) connected to terminal 11 of the N80 connector of the vehicle harness and cut it 335 mm from the end of the connector. Slip solder connector (A 002 546 13 41) onto green wire. Strip 15 mm of insulation from the ends of both wires and twist together (Figure 5). Solder in accordance with the specified repair method in WIS document AR00.19-P-010 0A (Figure 6).
14. Cut remaining wires of the repair harness 350 mm from the end of the connector. Cut remaining wires of the vehicle harness 335 mm from the end of the connector. Slip solder connector (A002 546 13 41) onto the wires listed below. Strip 15 mm of insulation from the ends of both wires and twist together (Figure 5). Solder in accordance with the specified repair method in WIS document AR00.19-P-010 0A, (Figure 6).
Terminal 3 Green (0.5 GN)
Terminal 4 Violet (0.5 VT)
Terminal 5 Brown-Yellow (0.5 BNYE)
Terminal 6 Violet-Green (0.5 VTGN)
Terminal 9 Red (0.75 RD)
Terminal 10 Green-White (0.5 GNWH)
15. Slip solder connector (A002 546 14 41) onto the wires listed below. Strip 15 mm of insulation from the ends of both wires and twist together (Figure 5). Solder in accordance with the specified repair method in WIS document AR00.19-P-010 0A (Figure 6).
Terminal 1 Brown (1.0 BN)
Terminal 2 Red-Black (1.0 RDBK)
Terminal 8 Brown (0.75 BN)
Note:
Ensure during the assembly that all wires are connected correctly. Reference WEB ETM document PE46.10-U-2101SAA to confirm pin locations and wire colors.
16. Use fabric tape to cover the solder connectors and join harness section A and B back together.
17. Install the repaired harness following the original routing. Use a cable tie in the lower anchor point and press the upper anchor into the steering column housing (Figure 7).
Note:
The cable anchor must be installed correctly or damage to the harness may occur.
18. Reassemble the vehicle in reverse order.
19. Connect SDS to verify correct resistance of the driver's airbag ignition circuits --> Control unit --> Body --> Airbag --> Actual values --> Ignition circuits --> Airbags for driver and passenger.
20. Resistance value for R12/13 and R12/14 should read approximately 3 - 3.5 ohms
Note:
Return cut off connectors to the QEC along with Short Test print out from STAR Diagnosis for analysis. Claims submitted as of repair date June 13, 2007 without returned parts and printouts may be debited.
Parts Information
Note:
The following allowable labor operations should be used when submitting a warranty claim for this repair.
In Case of Warranty, use the table.