Removal And Installation: Installation
If this Electronic Control Unit (ECU) is being replaced with a new unit, use a diagnostic scan tool to perform the Flash Programming Procedure (if available). This will confirm that the module is updated to the latest applicable software level.
To avoid serious or fatal injury on vehicles equipped with side curtain airbags, disable the Supplemental Restraint System (SRS) before attempting any Occupant Restraint Controller (ORC) diagnosis or service. The ORC may contain a rollover sensor, which enables the system to deploy the side SRS components in the event of a vehicle rollover event. If an ORC containing a rollover sensor is accidentally rolled during service while still connected to battery power, the side SRS components will deploy. 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 SRS. Failure to take the proper precautions could result in accidental airbag deployment.
To avoid serious or fatal injury on vehicles equipped with airbags, disable the Supplemental Restraint System (SRS) before attempting any steering wheel, steering column, airbags, airbag curtains, knee blocker, seat belt tensioner, impact sensor or instrument panel component diagnosis or service. Disconnect the Intelligent Battery Sensor (IBS)/negative battery cable assembly from the negative battery post, 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 SRS. Failure to take the proper precautions could result in accidental airbag deployment.
To avoid serious or fatal injury, never strike or drop the Occupant Restraint Controller (ORC), as it can damage the impact sensor or affect its calibration. The ORC contains the impact sensor, which enables the system to deploy the SRS components. If an ORC is accidentally dropped during service, the module must be scrapped and replaced with a new unit. Failure to observe this warning could result in accidental, incomplete, or improper SRS component deployment.
Service replacement ORC modules are shipped in a LOCKED OUT state and after installed will set a ORC UNLOCKED - ALL DEPLOYMENT DISABLED fault. Use a diagnostic scan tool to perform the ORC Flash Programming Procedure.
- Carefully position the ORC (1a) onto the weld studs on the top of the floor panel center tunnel. When the ORC is correctly positioned, the bottom of the housing will fit flush with the top of the floor panel center tunnel and the orientation arrow (1b) on the label on top of the housing will be pointed forward in the vehicle.
- Install and tighten the three nuts (2) that secure the ORC to the weld studs on the top of the floor panel center tunnel. Tighten the nuts to the proper torque specification. Refer to TORQUE SPECIFICATIONS .
- Connect both wire harness connectors (3) to the rearward-facing end of the ORC. Be certain that the latch on each connector is fully engaged.
- Install the center floor console. Refer to CONSOLE, FLOOR, REMOVAL AND INSTALLATION .
- If this Electronic Control Unit (ECU) is being replaced with a new unit, use a diagnostic scan tool to perform the Flash Programming Procedure (if available). This will confirm that the module is updated to the latest applicable software level.NOTE:
Service replacement ORC modules are shipped in a LOCKED OUT state and after installed will set a ORC UNLOCKED - ALL DEPLOYMENT DISABLED fault. Use the diagnostic scan tool to perform the ORC Flash Programming Procedure.
- If this Electronic Control Unit (ECU) is being replaced with a new unit, use the diagnostic scan tool to perform the ORC Flash Programming Procedure.
- Do not connect the negative battery cable at this time. The Supplemental Restraint System (SRS) Verification Test procedure should be performed following service of any SRS component. Refer to SUPPLEMENTAL RESTRAINT SYSTEM VERIFICATION TEST .
If this Electronic Control Unit (ECU) is being replaced with a new unit, a diagnostic scan tool MUST be used to determine if alignment of the PROXI configuration data into the new ECU is needed. If PROXI alignment is needed, follow the routine outlined in the diagnostic scan tool for PROXI Configuration Alignment under the Body Control Module (BCM) Miscellaneous Functions menu.