DTC 91-1: SH-AWD Control Unit Programming Error Acura TL IV рестайлинг

DTC 91-1: SH-AWD Control Unit Programming Error

Note. Before you troubleshoot, review the general troubleshooting information (see GENERAL TROUBLESHOOTING INFORMATION ). DTC 91-1 is stored when the SH-AWD system update is not completed. Do not turn the ignition switch to LOCK (0), or press the engine start/stop button to select the OFF mode while updating the SH-AWD system. If you do, the SH-AWD system can be damaged.

1. Turn the ignition switch to ON (II), or press the engine start/stop button to select the ON mode.
2. Do the SH-AWD system update procedure (see «SH-AWD® CONTROL UNIT UPDATE»(/acura/tl/iv-2011-2014/remont/differentials-drive-axles/#rear-differential-tl__sh-awdr-control-unit-update) ).
3. Check for DTCs with the HDS. Is DTC 91-1 indicated? YES - Substitute a known-good SH-AWD control unit (see «SH-AWD® CONTROL UNIT REPLACEMENT»(/acura/tl/iv-2011-2014/remont/differentials-drive-axles/#rear-differential-tl__sh-awdr-control-unit-replacement) ), and recheck. If the symptom/indication goes away with a known-good SH-AWD control unit, replace the original SH-AWD control unit (see «SH-AWD® CONTROL UNIT REPLACEMENT»(/acura/tl/iv-2011-2014/remont/differentials-drive-axles/#rear-differential-tl__sh-awdr-control-unit-replacement) ). NO - Update is complete.