Diagnosis Procedure

CONSULT

1. Ignition switch ON.
2. On the CONSULT screen, select "EPS/DAST 3">>"DATA MONITOR">>"BACK UP SIG 1 VOLT".
3. Check the value

   Monitor item	Standard value (Approx.)
   BACK UP SIG 1 VOLT	0.5 - 4.75 V

Is the inspection result normal?

YES

GO TO 4.

NO

GO TO 2.

1. Ignition switch OFF.
2. Disconnect each control module harness connector.
3. Check the continuity between both control module harness connectors.

   Steering force control module		Steering angle main control module		Continuity
   Connector	Terminal	Connector	Terminal
   E141	17	E149	24	Yes

4. Check the continuity between steering force control module harness connector and ground.

   Steering force control module		--	Continuity
   Connector	Terminal
   E141	17	Ground	No

Is the inspection result normal?

YES

GO TO 3.

NO

Repair or replace malfunctioning component.

CONSULT

1. Connect each control module harness connector.
2. Start the engine.
   CAUTION: Never drive the vehicle.
3. Select "Self Diagnostic Result" mode of "DAST 1".

Is any DTC is detected?

YES

Check the DTC. Refer to DTC Index .

NO

GO TO 4.

1. Ignition switch OFF.
2. Check enlarged contact spring of terminal. Refer to How to Check Terminal .
3. Perform intermittent incident while turning steering wheel. Refer to Intermittent Incident .

Is the inspection result normal?

YES

Replace steering force control module. Refer to Removal and Installation .

NO

Repair or replace malfunctioning component.