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
- Turn the ignition switch to ON (II), or press the engine start/stop button to select the ON mode
- Do the SH-AWD system update procedure (see HOW TO TROUBLESHOOT CIRCUITS AT THE SH-AWD CONTROL UNIT )
- 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 ), 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 )
NO -Update is complete