Module-Steering Control: Installation

WARNING: To avoid personal injury or death, on vehicles equipped with airbags, disable the supplemental restraint system before attempting any steering wheel, steering column, airbag, occupant classification system, seat belt tensioner, impact sensor, or instrument panel component diagnosis or service. Disconnect and isolate the battery negative (ground) cable, then wait two minutes for the system capacitor to discharge before performing further diagnosis or service. This is the only sure way to disable the supplemental restraint system. Failure to take the proper precautions could result in accidental airbag deployment.

CAUTION: A service replacement Steering Control Module (SCM) is shipped with the clockspring pre-centered and with a molded plastic locking pin installed. This locking pin should not be removed until the SCM has been installed on the steering column. If the locking pin is removed before the SCM is installed on a steering column, the clockspring centering procedure must be performed. (Refer to ELECTRICAL/RESTRAINTS/CLOCKSPRING - STANDARD PROCEDURE - CLOCKSPRING CENTERING) .

NOTE: Before starting this procedure, be certain to turn the steering wheel until the front wheels are in the straight-ahead position and that the entire steering system is locked or inhibited from rotation.

Fig 1: Removing/Installing SCM

Courtesy of DAIMLERCHRYSLER CORP.

Reinstall the turn signal cancel cam onto the clockspring rotor of the SCM. (Refer to ELECTRICAL/LAMPS/LIGHTING - EXTERIOR/TURN SIGNAL CANCEL CAM - INSTALLATION) .
While holding the centered clockspring rotor and the SCM case (3) stationary in relation to each other, carefully slide the SCM down over the steering column upper shaft.
Install and tighten the two screws (1) that secure the SCM to the steering column housing (2). Tighten the screws to 2 N.m (20 in. lbs.).

Fig 2: Electrical Connectors to SCM
Courtesy of DAIMLERCHRYSLER CORP.
Reconnect the two instrument panel wire harness connectors (3 and 4) to the two connector receptacles located below the steering column (5) on the back of the SCM case (2).

Fig 3: IDENTIFYING LIGHTING MULTI-FUNCTION SWITCH, WIPER MULTI-FUNCTION SWITCH, HAZARD SWITCH & CLOCKSPRING (STEERING CONTROL MODULE)
Courtesy of DAIMLERCHRYSLER CORP.
Reinstall the hazard switch (2) onto the SCM (4). (Refer to ELECTRICAL/LAMPS/LIGHTING - EXTERIOR/HAZARD SWITCH - INSTALLATION) .
Reinstall the left (lighting) multi-function switch (1) onto the SCM. (Refer to ELECTRICAL/LAMPS/LIGHTING - EXTERIOR/MULTI-FUNCTION SWITCH - INSTALLATION) .
Reinstall the right (wiper ) multi-function switch (3) onto the SCM. (Refer to ELECTRICAL/WIPERS/WASHERS/RIGHT MULTI-FUNCTION SWITCH - INSTALLATION) .
Reinstall the shrouds onto the steering column. (Refer to STEERING/COLUMN/SHROUD - INSTALLATION) .
If a new SCM has been installed, remove the plastic locking pin that is securing the clockspring rotor to the SCM case to maintain clockspring centering.
Reinstall the steering wheel onto the steering column. (Refer to STEERING/COLUMN/STEERING WHEEL - INSTALLATION) .
Reconnect the steering wheel wire harness connectors to the upper clockspring rotor connector receptacles. Be certain that the steering wheel wire harness is routed between the steering wheel back trim cover and the steering wheel armature.
Reinstall the driver airbag onto the steering wheel. (Refer to ELECTRICAL/RESTRAINTS/DRIVER AIRBAG - INSTALLATION) .
Reconnect the battery negative cable.

NOTE: Whenever the SCM is replaced with a new unit, it is necessary to configure the new module for certain optional equipment in the vehicle using a diagnostic scan tool. Follow the programming steps outlined in the diagnostic scan tool for "Configure SCM" under "Miscellaneous Functions" for the "SCM/Steering Control Module" menu item as appropriate.