DTC 81: Central Processing Unit (CPU)

WARNING: This page is about a different car, the 2009 Honda S2000, 2008 Honda S2000, 2007 Honda S2000, and 2006 Honda S2000. However, it is still accessible from the selected car via links, so may be relevant.

Turn the ignition switch to ON (II).
Check for other system DTCs.
Is another DTC indicated?

YES -Do the appropriate troubleshooting for the DTC.

NO -Go to step 3.
Clear the DTC with the HDS.
Test-drive the vehicle.
NOTE: Drive the vehicle on the road, not on a lift.
Check for DTCs with the HDS.
Is DTC 81 indicated?

YES -Check for loose terminals in the VSA modulator-control unit 47P connector. If necessary, substitute a known-good VSA modulator-control unit (see VSA MODULATOR-CONTROL UNIT REMOVAL AND INSTALLATION ), and retest.

NO -Intermittent failure, the system is OK at this time.