Nissan Note [10/22] Control unit input output signal standard
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Nissan Note [10/22] Control unit input output signal standard

Nissan Note [10/22] Control unit input output signal standard
STC-10
[EPS]
TROUBLE DIAGNOSIS
Control Unit Input/Output Signal Standard
BGS00033
CIRCUIT TESTER REFERENCE VALUE
CAUTION:
When checked using a circuit tester for voltage measurement, connector terminals should not be
forcefully extended.
STANDARD BY CONSULT-II
CAUTION:
The output signal indicates the EPS control unit calculation date. The normal values will be displayed
even in the event that the output circuit (harness) is open.
Terminal
Measuring point Measuring condition Standard
+ (wire color) –
4(V)
Ground
Torque sensor (sub) Ignition switch ON, steering wheel in neutral position Approx. 2.5 V
5 (BR) Torque sensor power supply Ignition switch ON Approx. 8 V
6 (G) Torque sensor (main) Ignition switch ON, steering wheel in neutral position Approx. 2.5 V
7 (Y) Torque sensor ground – Continuity exit
9(L) – CANH – –
10 (O) Ground Ignition power
Ignition switch ON
Battery voltage
(Approx. 12 V)
Ignition switch OFF Approx. 0 V
16 (Y) – CAN L – –
17 (R) Ground Battery power supply Ignition switch ON or OFF
Battery voltage
(Approx. 12 V)
18 (B) Ground Ground – Continuity exit
19 (–)
–
Motor (+) – –
20 (–) Motor (–) – –
Monitor item
DATA MONITOR
Malfunction inspection checklist
Condition Reference values for normal operation
MOTOR VOL (V)
Ignition switch
ON or engine
running
Battery voltage (Approx. 12 V)
STC-15, "
Inspection 1: Battery
Voltage Malfunction"
TORQUE SENSOR (Nm)
Turning steer-
ing wheel clock-
wise or counter
clockwise at
ignition switch
ON or running
engine
Neutral (Steering force is zero): Approx. 0
N·m.
The value is changed according to steering
left or right.
STC-16, "
Inspection 2: Torque
Sensor Malfunction"
MOTOR SIG (A)
Neutral (Steering force is zero and in vehicle
is in straight-ahead position): Approx. 0 A.
The value is changed according to steering
left or right.
STC-16, "
Inspection 2: Torque
Sensor Malfunction", STC-17,
"Inspection 3: Motor Malfunc-
tion" , STC-18, "Inspection 5:
Control unit malfunction"
MOTOR CURRENT (A)
VEHICLE SPEED (km/h)
Ignition switch
ON or engine
running
Almost in accordance with the speedometer
display. It is not a malfunction, though it
might not be corresponding just after ignition
switch is turned ON.
STC-19, "
Inspection 6: Vehicle
Speed Signal Malfunction"
WARNING LAMP (ON/OFF)
EPS warning lamp ON: ON
EPS warning lamp OFF: OFF
Warning lamp circuit inspection
DERATING STAT (ON/OFF)
Usually OFF. Turn ON when the stationary
steering is performed excessively. Return to
OFF when leaving it for a while.
This is normal.
ENGINE STATUS
(stop, stall, run, and crank)
Displays engine status.
STC-19, "Inspection 7: Engine
Signal Malfunction"

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