EPS DTC Troubleshooting: 34-02
DTC 34-02:
 Fail-safe Relay Stuck ON (Initial diagnosis)
  1. Clear the DTCs with the HDS.
  1. Turn the ignition switch OFF.
  1. Turn the ignition switch ON (II).
Does the EPS indicator come on?
YES -
Go to Step 4 .
NO -
Check for loose terminals or poor connections. If the connections are good, the system is OK at this time.■
  1. Verify the DTC.
Is DTC 34-02 indicated?
YES -
Go to Step 5 .
NO -
Troubleshoot the indicated DTC. If there are no DTCs, the system is OK at this time.■
  1. Turn the ignition switch OFF.
  1. Disconnect the EPS control unit connector A (2P), connector B (2P), connector C (2P), and connector D (28P).
  1. Turn the ignition switch ON (II).
  1. Measure the voltage between body ground and the EPS control unit connector B (2P) No. 1 terminal, connector C (2P) No. 1 terminal, and connector C (2P) No. 2 terminal individually.
Is there battery voltage?
YES -
Repair short to power in the wire harness between the EPS control unit and motor.■
NO -
Check for loose terminals in the EPS control unit connectors, and repair if necessary. If no poor connections are found, replace the EPS control unit. ■