Restraints - SRS Lamp ON/DTC's 9103/9123 Stored
Date: November 22, 2006Order No.: P-B-91.60/78d
Supersedes: P-B-91.60/78c dated Jan. 17, 2006
Group: 91
Revision History
Revision Date Purpose
d 11/22/06 Work Instruction and Parts Information Updated
c 1/17/06 Process, Part No. Description and Damage Code Updated
b 12/28/05 VIN Number Corrected
a 12/19/05 Document Order No. Revised
- 9/14/04 Initial issue
SUBJECT:
Model 171.454/456/473
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 procedure. Replacement of the contact spiral is not necessary.
Fault Codes:
DTC 9103- the resistance value in the ignition circuit containing component R12/13 is too high
DTC 9123- the resistance value in the ignition circuit containing component R12/14 is too high
1. Remove the clock spring contact. Refer to WIS document AR46.10-P-0200V.
NOTE:
The battery ground cable must be disconnected. If this step is omitted, other faults may be introduced into the vehicle when cutting the SCM harness.
2. Remove the cover from center console. Refer to WIS document AR68.20-P-2350V.
3. Remove control and operating unit for climate unit. Refer to WIS document AR83.40-P-6350V.
4. Remove COMAND unit. Refer to WIS document AR82.85-P-1000V.
5. Cover fiber optic cable terminal. Refer to WIS document AR82.95-P-0005-01A.
6. Unclip SCM connector from jacket tube by pushing on lock tabs (Figure 1).
7. Pull SCM harness out through opening for center console (Figure 2).
Release lock tab on both sides of connector to remove from bracket
Pull SCM harness out through center console
8. The SCM repair harness is color coded to match the car side of the harness. Pins 1, 8 and 12 of the repair harness SCM connector are brown wires. Pins 8 and 12 of the car harness SCM connector are brown wires. Pins 8 and 12 cannot be interchanged. There is no wire in terminal 1 of the car harness SCM connector.
NOTE:
Reference WEB ETM document PE46.10-U-2101TA to confirm pin locations and wire colors.
9. Cutting Procedure, First Time Repair: Locate the brown wire (0.5 BN) connected to terminal 12 of the SCM connector of the vehicle harness and cut it 30 mm from the end of the connector. Locate the brown wire (0.5 BN) connected to terminal 12 of the SCM connector of the repair harness and cut it 45 mm from the end of the connector.
10. Cutting Procedure, Previous Repair: If the SCM connector has been previously repaired using individual repair wires as described in DTB P-B 91.60/78c, remove the insulating tape of the repaired harness. Locate the brown (0.5 BN) wire connected to pin 12 of the SCM connector of the vehicle harness. Cut the wire at the solder connector so that the white pigtail and solder connector are completely removed.
11. Locate the brown wire (0.5 BN) connected to terminal 12 of the SCM connector of the repair harness and cut to the length of the removed pigtail and solder connector, plus an additional 15 mm for the new solder connector splice.
NOTE:
The new repair harness needs to be spliced directly to the vehicle harness using new solder connectors.
Soldering Procedure:
12. Slip solder connector (A002 546 13 41) onto the cut wire. Strip approximately 15mm of insulation from the repair harness wire and the SCM harness wire. Braid the 15mm stripped ends of the repair wires and SCM harness wires (Figure 3).
13. Solder the wires in accordance with the specified repair method in WIS document AR54.18-P-01006A see (Figure 4).
Heat solder connector with Hot Air Gun WE58.40Z1007-03A set to 400 degree C until soldering ring has dissolved
14. Repeat procedure for the remaining wires.
NOTE:
The brown (0.75 BN) wire in terminal 1 and the orange (1.0 OR) wire in terminal 2 of the repair harness SCM connector will not be used. Cut the wires and insulate with fabric tape.
15. Insulate the solder connectors and the repaired harness with fabric tape.
16. Reassemble the vehicle in reverse order.
NOTE:
Replacement of the contact spiral is not necessary. The mounting bolt for the steering wheel must always be replaced.
Parts Information
NOTE:
The following allowable labor operations should be used when submitting a warranty claim for this repair
In Case of Warranty
Operation:
Short test, perform (54-1011)
Airbag line to steering column module, replace (02-4859)