General Service Instructions

^ Do not expose the inflator modules to temperatures above 65°C (150°F).
^ Verify the correct replacement part number. Do not substitute a component from a different vehicle.
^ Do not repair any of the following components. Service these components by replacement only.

- The inflatable restraint Sensing and Diagnostic Module (SDM).
- The inflatable restraint IP (inflator) module.
- The inflatable restraint steering wheel (inflator) module.
- The inflatable restraint steering wheel module coil.
- The inflatable restraint front end discriminating sensor.

^ Use only new or remanufactured parts from an authorized original equipment manufacturer dealer. Do not use salvaged parts for repairs to the SIR system.
^ Discard any of the following components if it has been dropped from a height of 91 centimeters (3 feet) or greater. Do not install the component in a vehicle.

- The inflatable restraint Sensing and Diagnostic Module (SDM).
- The inflatable restraint IP (inflator) module.
- The inflatable restraint steering wheel (inflator) module.
- The inflatable restraint steering wheel module coil.
- The inflatable restraint front end discriminating sensor.

^ When you replace the SDM, verify that the following conditions are met:

- The mounting surface is clean.
- The arrow on the module points toward the front of the vehicle.
- The module is flat on the mounting surface, parallel to the vehicle datum line.
- The module fasteners are installed and tightened as specified.

^ In order to avoid setting false diagnostic trouble codes, only apply power to the SIR system when one of the following two conditions is met:

- All SIR system components are properly mounted and electrically connected.
- A diagnostic procedure directs you to apply power.

^ Begin diagnosis of malfunctions with the SIR Diagnostic System Check. Perform the SIR Diagnostic System Check in order to verify the following:

- The proper operation of the AIR BAG warning lamp.
- Communication with the SDM through the serial data line.
- The presence or absence of diagnostic trouble codes.
- Whether additional diagnosis is required and where the information resides.

^ Not beginning with the SIR Diagnostic System Check could cause the following:

- Extended diagnostic time.
- Incorrect diagnosis.
- Unneeded parts replacement.