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Home >> Nissan-Datsun >> 2009 >> Cube S, Standard >> Repair and Diagnosis >> Steering >> Power Steering >> Steering Control System >> Ecu Diagnosis Information >> EPS Control Unit >> Reference Value >> Values On The Diagnosis Tool
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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 circuit (harness) is open.
DIAGNOSIS TOOL REFERENCE VALUE

Monitor item Display content Data monitor
Condition Display value
BATTERY VOLT Power supply voltage for EPS control unit Ignition switch: ON Battery voltage
TORQUE SENSOR Steering wheel turning force Engine running Steering wheel: Not steering (There is no steering force) Approx. 0 Nm
Steering wheel: Right turn Positive value (Nm)
Steering wheel: Left turn Negative value (Nm)
MOTOR CURRENT Consumption current of EPS motor Engine running Steering wheel: Not steering (There is no steering force) Approx. 0 A
Steering wheel: Right or left turn Displays consumption current of EPS motor (A)(1)
MOTOR SIG Command current to EPS motor Engine running Steering wheel: Not steering (There is no steering force) Approx. 0 A
Steering wheel: Right turn Negative value (A)
Steering wheel: Left turn Positive value (A)
ASSIST TORQUE Displays assist torque being output by the EPS. Engine running Approx. 0 Nm(2)
C/U TEMP Displays temperature of the EPS control unit. Ignition switch ON or engine running Displays temperature of inside of EPS control unit (°C)
ASSIST LEVEL Assist available level Engine running 100 % (3)
VEHICLE SPEED Vehicle speed Vehicle stopped 0 km/h (0 mph)
While driving Approximately equal to the indication on speedometer (inside of ±10%)(4)
WARNING LAMP EPS warning lamp condition EPS warning lamp: ON On
EPS warning lamp: OFF Off
ENGINE STATUS Engine status Engine not running Stop
Engine running Run
(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) A fixed value is indicated regardless of steering turning.
(3) Normally displays 100%. In case of an excessive stationary steering, the assist curvature gradually falls. However, it returns to 100% when left standing.
(4) It is not a malfunction, though it might not be corresponding just after ignition switch in turned ON.