Nissan Versa (N17): Diagnosis system (EPS control unit)

Nissan Versa 2nd generation (N17) Service Manual / Steering / Steering control system (STC) / Diagnosis system (EPS control unit)

CONSULT Function

FUNCTION

CONSULT can display each diagnostic item using the diagnostic test modes shown following.   

*: The following diagnosis information is erased by erasing.

  • DTC
  • Freeze frame data (FFD)

ECU IDENTIFICATION

Displays the part number stored in the control unit.

SELF-DIAG RESULTS MODE

Refer to STC "DTC Index".

When "CRNT" is displayed on self-diagnosis result.

  • The system is presently malfunctioning.

When "PAST" is displayed on self-diagnosis result.

  • System malfunction in the past is detected, but the system is presently normal.

FREEZE FRAME DATA (FFD)

The following vehicle status is recorded when DTC is detected and is displayed on CONSULT.

DATA MONITOR MODE

DATA MONITOR MODE

*1: Almost in accordance with the value of "MOTOR SIG". It is not a malfunction though these values are not accorded when steering quickly.

*2: Normally displays 100%. In case of an excessive stationary steering, the assist curvature gradually falls.

However, it returns to 100% when left standing.

*3: It is not a malfunction, though it might not be corresponding just after ignition switch in turned ON.

ECU DIAGNOSIS INFORMATION

EPS System

EPS SYSTEM : System Description EPS control unit performs an arithmetical operation on data, such as steering wheel turning force (sensor signal) from the torque sensor, vehicle speed signal, ...

EPS control unit

Reference Value VALUES ON THE DIAGNOSIS TOOL CAUTION: The output signal indicates the EPS control unit calculation data. The normal values will be displayed even in the event that the output cir ...

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