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Restraints Control Module Diagnostic Trouble Codes (LA501-021)

Publication date: 2006-06-12
Reference number: LA501-021

RESTRAINTS CONTROL MODULE DIAGNOSTIC TROUBLE CODES

RESTRAINTS CONTROL MODULE DIAGNOSTIC TROUBLE CODES

TECHNICAL SERVICE BULLETIN

Reference Number(s): LA501-021, Date of Issue:  June 12, 2006
LAND ROVER: LR3
ISSUE: 1
SECTION: 501-20A
AFFECTED VEHICLES: LR3 (LA) VIN: 5A000360 onwards

CONDITION SUMMARY

RESTRAINTS CONTROL MODULE DIAGNOSTIC TROUBLE CODES 

Situation:  On investigation using the Worldwide Diagnostic System (WDS), the Restraints Control Module (RCM) may log one or more of the following Diagnostic Trouble Codes (DTC):

Improper routing of the under-seat wiring harness of the seatbelt buckle pretensioner may cause a strain on the harness connectors at the extremes of seat adjustment. The subsequent harness strain can lead to the DTC logs.

Action:  Should any of the above DTCs be present in the RCM or a new harness is being installed, refer to the REPAIR PROCEDURES  detailed in this bulletin to correctly route and secure the wiring harness.

PARTS

PARTS

EYC500270  Cable tie/edge clip assembly  Qty 4 per seat harness repair 
Locally sourced: 
  • Black fabric-backed tape 
 Qty as required (shop supply) 
NOTE: Black fabric tape is a workshop consumable and is not claimable under warranty.

WARRANTY

NOTE: Repair procedures are under constant review, and therefore times are subject to change; those quoted here must be taken as guidance only. Always refer to DDW to obtain the latest repair time.
The labor times listed below are for rectification of the DTCs noted above and are not to be used for instances of harness replacement.

DDW requires the use of causal part numbers. Labor only claims must show the causal part number with a quantity of zero.

WARRANTY INFORMATION

Description SRO Time (Hours) Condition Code Causal Part
Attach harness to seat frame - manual seats 78.70.89/38  0.50  42 EVB500670PMA
Attach harness to seat frame - power seat - LH 78.70.89/39  0.50  42 EVB500670PMA
Attach harness to seat frame - power seat - RH 78.70.89/40  0.50  42 EVB500670PMA

Normal warranty policy and procedures apply. 

REPAIR PROCEDURE

ROUTE AND SECURE PRETENSIONER HARNESS FOR MANUAL ADJUSTING SEAT 

WARNING: The safety precautions detailed in the Workshop Manual relating to Supplementary Restraint Systems (SRS) must be adhered to.
NOTE: Where a procedure refers to a 'cable tie' only, the edge-clip is to be removed from the cable tie/edge clip assembly and discarded. Where a procedure refers to installing an 'edge clip' the clip provides a 'mount' for the cable tie.
NOTE: GTR lookup sequence is as follows:
GTR Home > NAS > Service Information/ LA - LR3/2005 > Workshop Manuals > Bookmark "Body and Paint/ 501-10: Seating" Link "Front Seat (78.10.44/99)"
  1. Refer to GTR section 501-10 Front Seat operation 78.10.44/99 and remove the affected front seat.
  2. Release the pretensioner wiring harness and disconnect the connector from the seat frame.
    CAUTION: Care must be taken to avoid damage to the pretensioner wires. The wires must face away from the inboard side of the seat when secured by the cable ties. The cable ties must not be overtightened. (Fig 1)
    3. Fig 1: View Of Wiring With Cable Tie
    G04592964Courtesy of LAND ROVER NORTH AMERICA, INC.
  3. Route the pretensioner wiring along the side of the pretensioner tube so that the wiring is facing away from the inboard side of the seat. (Fig 1)
  4. Secure the wiring with a cable tie at point A, ensuring not to over-tighten the cable tie. (Fig 1)
  5. Using black fabric tape, secure the wiring to the pretensioner tube, ensuring the tape does not extend beyond the end of the tube. (Arrowed in Fig 1)
  6. Secure the wiring with a cable tie at point B, ensuring not to over-tighten the cable tie. (Fig 1)
    CAUTION: The under-seat connector must not be under any strain.
  7. Connect the under-seat connector, ensuring the connector is not under any strain.
  8. Secure the pretensioner wiring to the seat frame using cable ties in two places where shown. (Fig 2)
    Fig 2: Securing Pretensioner Wiring To Seat Frame
    G04592965Courtesy of LAND ROVER NORTH AMERICA, INC.
    CAUTION: The body-side connector must be clipped to the seat base to avoid strain.
  9. Clip the body-side connector to the seat base, ensuring the wiring is not under any strain.
  10. Refer to GTR section 501-10 Front Seat operation 78.10.44/99 and install the affected front seat.

ROUTE AND SECURE PRETENSIONER HARNESS FOR LEFT-HAND ELECTRIC ADJUSTING SEAT 

WARNING: The safety precautions detailed in the Workshop Manual relating to Supplementary Restraint Systems (SRS) must be adhered to.
NOTE: Where a procedure refers to a 'cable tie' only, the edge-clip is to be removed from the cable tie/edge clip assembly and discarded. Where a procedure refers to installing an 'edge clip' the clip provides a 'mount' for the cable tie.
  1. Adjust the affected seat to the mid-height position.
    NOTE: GTR lookup sequence is as follows:
    GTR Home > NAS > Service Information/ LA - LR3/2005 > Workshop Manuals > Bookmark "Body and Paint/ 501-10: Seating" Link "Front Seat (78.10.44/99)"
  2. Refer to GTR section 501-10 Front Seat operation 78.10.44/99 and remove the affected front seat.
  3. Release the pretensioner wiring harness and disconnect the connector from the seat frame.
    CAUTION: Care must be taken to avoid damage to the pretensioner wires. The wires must face away from the inboard side of the seat when secured by the cable ties. The cable ties must not be overtightened. (Fig 3)
    4. Fig 3: View Of Wiring With Cable Tie
    G04592966Courtesy of LAND ROVER NORTH AMERICA, INC.
  4. Route the pretensioner wiring along the side of the pretensioner tube so that the wiring is facing away from the inboard side of the seat. (Fig 3)
  5. Secure the wiring with a cable tie at point A, ensuring not to over-tighten the cable tie. (Fig 3)
  6. Using black fabric tape, secure the wiring to the pretensioner tube, ensuring the tape does not extend beyond the end of the tube. (Arrowed in Fig 3)
  7. Secure the wiring with a cable tie at point B, ensuring not to over-tighten the cable tie. (Fig 3)
  8. Straighten the wiring harness.
  9. Measure 500mm (19 5/8 inches) along the wiring harness, from the point of the pretensioner body where the wiring emerges, and install an edge clip. (Fig 4)
    Fig 4: Locating Edge Clip
    G04592967Courtesy of LAND ROVER NORTH AMERICA, INC.
  10. Route the pretensioner wiring around and along the front of the seat frame as shown. (Fig 5)
  11. Install the under-seat connector.
    Fig 5: Routing Pretensioner Wiring
    G04592968Courtesy of LAND ROVER NORTH AMERICA, INC.
    CAUTION: Ensure the wiring cannot become entangled with the seat height adjustment mechanism.
  12. Secure the electrical connector bracket with a cable tie where shown. (Fig 6)
    13. Fig 6: Securing Electrical Connector Bracket With Cable Tie
    G04592969Courtesy of LAND ROVER NORTH AMERICA, INC.
  13. Attach the edge clip to the electrical connector bracket. (Arrowed in Fig 7)
    Fig 7: Attaching Edge Clip To Electrical Connector Bracket
    G04592970Courtesy of LAND ROVER NORTH AMERICA, INC.
    CAUTION: The body-side harness connector must be clipped to the seat base to avoid strain.
  14. Clip the body-side harness to the seat base, ensuring there is no strain to the connector or wiring.
  15. Refer to GTR section 501-10 Front Seat operation 78.10.44/99 and install the affected front seat.

ROUTE AND SECURE PRETENSIONER HARNESS FOR RIGHT-HAND ELECTRIC ADJUSTING SEAT 

WARNING: The safety precautions detailed in the Workshop Manual relating to Supplementary Restraint Systems (SRS) must be adhered to.
NOTE: Where a procedure refers to a 'cable tie' only, the edge-clip is to be removed from the cable tie/edge clip assembly and discarded. Where a procedure refers to installing an 'edge clip' the clip provides a 'mount' for the cable tie.
  1. Adjust the affected seat to the mid-height position.
    NOTE: GTR lookup sequence is as follows:
    GTR Home > NAS > Service Information/ LA - LR3/2005 > Workshop Manuals > Bookmark "Body and Paint/ 501-10: Seating" Link "Front Seat (78.10.44/99)"
  2. Refer to GTR section 501-10 Front Seat operation 78.10.44/99 and remove the affected front seat.
  3. Release the pretensioner wiring harness and disconnect the connector from the seat frame.
    CAUTION: Care must be taken to avoid damage to the pretensioner wires. The wires must face away from the inboard side of the seat when secured by the cable ties. The cable ties must not be overtightened. (Fig 8)
    4. Fig 8: View Of Wiring With Cable Tie
    G04592971Courtesy of LAND ROVER NORTH AMERICA, INC.
  4. Route the wiring of the new pretensioner along the side of the pretensioner tube so that the wiring is facing away from the inboard side of the seat. (Fig 8)
  5. Secure the wiring with a cable tie at point A, ensuring not to over-tighten the cable tie. (Fig 8)
  6. Using black fabric tape, secure the wiring to the pretensioner tube, ensuring the tape does not extend beyond the end of the tube. (Arrowed in Fig 8)
  7. Secure the wiring with a cable tie at point B, ensuring not to over-tighten the cable tie. (Fig 8)
  8. Straighten the wiring harness.
  9. Measure 500mm (19 5/8 inches) along the wiring harness, from the point of the pretensioner body where the wiring emerges, and install an edge clip. (Fig 9)
    10. Fig 9: Locating Edge Clip
    G04592972Courtesy of LAND ROVER NORTH AMERICA, INC.
  10. Measure 305mm (12 inches) along the wiring harness, from the point of the pretensioner body where the wiring emerges, and install an edge clip. (Fig 9)
  11. Attach one edge clip to fore/aft motor bracket as shown. (Fig 10)
    12. Fig 10: Attaching Edge Clip To Fore/Aft Motor Bracket
    G04592973Courtesy of LAND ROVER NORTH AMERICA, INC.
  12. Connect the under-seat connector.
  13. Attach the second edge clip to the electrical connector bracket as shown. (Fig 11)
    Fig 11: Attaching Edge Clip To Electrical Connector Bracket
    G04592974Courtesy of LAND ROVER NORTH AMERICA, INC.
    CAUTION: The body-side harness connector must be clipped to the seat base to avoid strain.
  14. Clip the body-side harness to the seat base, ensuring there is no strain to the connector or wiring.
  15. Refer to GTR section 501-10 Front Seat operation 78.10.44/99 and install the affected front seat.
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