EPS DTC Troubleshooting: 21-01, 21-02

  1. Check for continuity between EPS control unit connector D (28P) terminals No. 15 and ECM connector A (44P) terminals No. 37.
Is there continuity?
YES -
Check for loose terminals in the EPS control unit connector D (28P), and repair if necessary. If no poor connections are found, replace the EPS control unit. ■
NO -
Repair open in the wire between the EPS control unit and the ECM.■