DTC Troubleshooting: 93-02, 93-03, 93-04
EPS Control Unit DTC 93-02:
 LKAS Control Unit (Problem with Direction of the Current)
EPS Control Unit DTC 93-03:
 LKAS Control Unit (Problem with Output of the Current)
EPS Control Unit DTC 93-04:
 LKAS Control Unit (CPU)
  1. Clear the DTCs with the HDS.
  1. Turn the ignition switch to LOCK (0).
  1. Start the engine with the LKAS activated, test-drive vehicle at 72 km/h (45 mph) or more for 30 seconds or more.
  1. Watch the LKAS indicator.
Does the LKAS indicator come on?
YES -
Go to Step 5 .
NO -
Intermittent failure, the system is OK at this time.■
  1. Check for DTC with the HDS.
Is DTC 93-02, 93-03, or 93-04 indicated?
YES -
Check for loose terminals in the LKAS control unit connector, and repair if necessary. If all connections are OK, replace the LKAS control unit. ■
NO -
Troubleshoot the indicated DTC(s).■