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New Key Interlock Service Procedure (57/02/97/NAS)

Publication date: 1997-06-20
Reference number: 57/02/97/NAS

NEW KEY INTERLOCK SERVICE PROCEDURE

NEW KEY INTERLOCK SERVICE PROCEDURE

TECHNICAL SERVICE BULLETIN

Reference Number(s): 57/02/97/NAS, Date of Issue:  June 20, 1997

NEW KEY INTERLOCK SERVICE PROCEDURE

Model(s): Land Rover Discovery(LP)

Reference: WSM Section 57

Issue: 1

Group: Steering

Bulletin Number: 57/02/97/NAS

Date: 1997

AFFECTED VEHICLE RANGE

Discovery (LP)-

VA703237 Onwards

VA534104 Onwards

SITUATION

NEW PROCEDURE FOR REPAIR OF IGNITION KEY INTERLOCK SOLENOID

For vehicles equipped with early production steering column (ANR3752) an interlock solenoid kit is available which allows replacement of the interlock solenoid without replacing the steering column.

NOTE: Late-design columns MUST be replaced as an assembly. Because replacement columns may be of the later design it is important to verify the column in the vehicle. See below for specific information to determine whether a vehicle has an early or late style column.

RESOLUTION

DIAGNOSTIC STEPS FOR KEY INTERLOCK SOLENOID

  1. Identify steering column type utilizing the identification procedure below.
  2. Diagnose symptoms to determine if the fault is mechanical or electrical in nature.
  3. Replace solenoid (or column assembly) or repair electrical circuit as necessary.
NOTE: Refer to the Diagnosis and Repair sections for details.

PARTS INFORMATION

PARTS INFORMATION

Part Number Description
STC4024 Interlock Solenoid Kit
--- Locally sourced Loctite 242 - Thread Locking Compound
ANR3752 Early-Design Steering Column, (Repair is possible)
ANR6313 Late-Design Steering Column (Repair not permitted)
NOTE: Late-design steering columns may not be repaired. They must be replaced if a mechanical fault occurs. See the column identification section for details.

Replacement columns ordered through parts will supersede to the later design.

REPAIR PROCEDURE

STEERING COLUMN IDENTIFICATION

NOTE: Vehicles equipped with the late-design column (ANR6313) MUST use ANR6313 for repair. A vehicle equipped with the early-design column (ANR3752) may be repaired or the column may be replaced with the late-design column assembly.

If steering column replacement is necessary and a new-design column is used in a vehicle previously equipped with the early-design, there are some differences between the two steering columns which should be noted and reviewed with the customer. The differences between the two columns are:

  • The tilt adjustment range changes from 4° (ANR3752) to 16° for ANR6313.
  • The telescope adjustment range changes from 64 mm (2.5 in.) (ANR3752) to 34 mm (1.3 in.) for ANR6313.
  • The late-design column features reduced adjustment loads resulting in a different "feel" to the customer.
    1. Telescope the column fully forward and tilt it fully downward.
    2. Measure the distance between the bottom edge of the steering wheel and the floor to determine if the steering column is serviceable. See Fig 1 .
      1. Measured distance of approximately 400 mm. (15.5 in.): the steering column is NOT serviceable and must be replaced as an assembly. See WSM section 57.
      2. Measured distance of approximately 460 mm. (18 in.): the column is serviceable.
NOTE: ANR6313 can also be identified by a bar code label on the lock cover plate (near the ignition lock barrel).

DIAGNOSIS

SYMPTOM 1

Solenoid damaged or disassembled

  1. Proceed to replacement procedure.

SYMPTOM 2

Key comes out when selector is not in "PARK"

  1. Remove steering column shroud to access two pin solenoid connector.
  2. Test for power to solenoid as follows:
    1. Back-probe two pin connector with test light.
    2. Turn key to position II (run).
    3. Place selector in neutral.
  3. If the test light is lit, the fault is mechanical. Go to the replacement procedure.
  4. If the test light is not lit, the fault is electrical. Refer to the ETM for diagnosis.

SYMPTOM 3

Key will not come out of ignition.

  1. Verify that the key sticks.
  2. Obtain radio code and disconnect battery negative terminal.
  3. Recheck ignition lock operation.
  4. If the lock operates normally, the fault is electrical. The solenoid is receiving power. Refer to ETM for diagnosis.
  5. If the lock sticks, the fault is mechanical. Go to the replacement procedure.

SOLENOID REMOVAL

  1. Obtain radio code and disconnect battery negative terminal.
  2. Remove driver's side closure panel (six screws).
  3. Remove instrument pack trim (four screws).
  4. Remove steering column shroud (six screws).
  5. Remove the three bolts securing column tilt lever assembly to column. See Fig 2 , reference 3.
  6. Remove lever and plastic release plunger from column. See Fig 2 reference 4.
  7. Disconnect and unclip ignition switch leads.
  8. Remove two screws securing switch to column. See Fig 2 , reference 7.
  9. Remove switch.
  10. Remove interlocking cam. Note the orientation of the cam. See Fig 4 .
  11. Disconnect interlock solenoid lead.
  12. Remove two painted screws securing solenoid to column.
  13. Remove solenoid.
CAUTION: DO NOT turn the slotted head on the interlock solenoid plunger. The overall length of the interlock solenoid plunger has been preset at the factory and must never be altered. Changing this setting will result in malfunction of the solenoid. Turning the plunger will also defeat the thread- locking compound used in manufacture, causing the plunger adjustment (Fig 3 ) to change in service.

SOLENOID INSTALLATION

  1. Position interlock solenoid on steering column.
  2. Install two solenoid screws.
  3. Connect interlock solenoid leads.
  4. Install interlock cam, being careful to install in the same position as before. See Fig 4 .
  5. Position ignition switch on steering column.
  6. Apply thread-locker (Loctite 242) and install two screws securing the switch to the column.
  7. Connect and clip ignition switch leads.
  8. Install plastic release plunger in column and fit steering column tilt lever assembly.
  9. Install steering column shroud.
  10. Install instrument pack trim (four screws).
  11. Install driver's side closure panel (six screws).
  12. Connect battery negative lead.
  13. Test ignition interlock:
    1. Confirm that the key CAN NOT be removed when the transmission selector lever is NOT in the PARK position.
    2. Confirm that the key CAN be removed when the selector lever is in the PARK position.
  14. Reset windows and sunroof and radio code. Synchronize remotes.
Fig 1: Steering Wheel & Floor - Measurements
G97H58799
Fig 2: Solenoid - Location
G97A58800
Fig 3: Column Tilt Lever
G97B58801
Fig 4: Interlock Cam
G97C58802

WARRANTY INFORMATION

57.40.50: Replace interlock solenoid

Time: 1.00 hr.

57.40.01: Replace steering column

Time: 1.45 hrs.

Comp Code: 5D4Z

Normal warranty policy and procedures apply.

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