Pre-Drive Check

As of system status Terminal R "ON," the MRS4RD performs a pre-drive check (system test). While the pre-drive check is in progress, the airbag warning lamp is switched on for 3 - 5 seconds. Once the pre-drive check has been completed, and assuming no faults have been detected, the airbag warning lamp is switched off and the system is ready for operation.

The following tests are performed as part of the pre-drive check:

• Comparison of programmed equipment with actual equipment fitted
• Testing of deployment circuits
• Testing of resistance of deployment circuits
• Testing of internal components
• Testing of external components
• Checksum calculation for algorithm parameters