DTC Troubleshooting: 91-01
EPS Control Unit DTC 91-01:
 EPS Control Unit (Problem with the CPU Communication)
  1. Clear the DTCs with the HDS.
  1. Turn the ignition switch to LOCK (0).
  1. Start the engine and watch the LKAS indicator.
Does the LKAS indicator come on?
YES -
Go to Step 4 .
NO -
Intermittent failure. The system is OK at this time. Check for loose or poor connections.■
  1. Check for DTC with the HDS.
Is DTC 91-01 indicated?
YES -
Check for loose or poor connections. If all connections are OK, replace the EPS control unit. ■
NO -
Troubleshoot the indicated DTC.■