Nissan Rogue. Instruction — part 1145
STC-10
< SYSTEM DESCRIPTION >
DIAGNOSIS SYSTEM (EPS CONTROL UNIT)
*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.
EPS CONTROL UNIT
STC-11
< ECU DIAGNOSIS INFORMATION >
C
D
E
F
H
I
J
K
L
M
A
B
STC
N
O
P
ECU DIAGNOSIS INFORMATION
EPS CONTROL UNIT
Reference Value
INFOID:0000000011279643
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.
NOTE:
The following table includes information (items) inapplicable to this vehicle: For information (items) applicable
to this vehicle, refer to CONSULT display items.
*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.
Monitor item
Data monitor
Condition
Display value
BATTERY VOLT
Ignition switch: ON
Battery voltage
TORQUE SENSOR
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
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
Engine running
Steering wheel: Not steering (There is
no steering force)
Approx. 0 A
Steering wheel: Right turn
Positive value (A)
Steering wheel: Left turn
Negative value (A)
ASSIST TORQUE
Engine running
Steering wheel: Not steering (There is
no steering force)
Approx. 0 Nm
Steering wheel: Right or left turn
Displays assist torque of EPS motor
(Nm)
C/U TEMP
Ignition switch ON or engine running
Displays temperature of inside of
EPS control unit (
°C) or (°F)
ASSIST LEVEL
Engine running
100 %
*2
VEHICLE SPEED
Vehicle stopped
0 km/h (0 mph)
While driving
Approximately equal to the indication
on speedometer
*3
(inside of
±10%)
WARNING LAMP
EPS warning lamp: ON
On
EPS warning lamp: OFF
Off
ENGINE STATUS
Engine not running
Stop
Engine running
Run
STC-12
< ECU DIAGNOSIS INFORMATION >
EPS CONTROL UNIT
TERMINAL LAYOUT
PHYSICAL VALUES
ALGIA0173ZZ
Terminal No.
(Wire Color)
Description
Condition
Value
(Approx.)
+
−
Signal name
Input/Output
1
(P)
—
CAN low
Input/Output
—
—
2
(L)
—
CAN high
Input/Output
—
—
4
(SB)
Ground
Ignition power supply
Input
Ignition switch: ON
Battery voltage
Ignition switch: OFF
0 V
9
(R)
Ground
Battery power supply
Input
Always
Battery voltage
10
(B)
Ground
Ground
—
Always
0 V
11
(B)
Ground
Torque sensor ground
Input
Always
0 V
12
(Y)
Ground
Torque sub sensor
signal
Input
Ignition switch: ON
Steering wheel: Not
steering (There is no
steering force)
2.5 V
Engine running
Steering wheel: steer-
ing
1.6 V – 3.4 V
(The value is changed
according to steering
left or right)
14
(R)
Ground
Torque sensor power
supply
Output
Ignition switch: ON
10 V
15
(G)
Ground
Torque main sensor
signal
Input
Ignition switch: ON
Steering wheel: Not
steering (There is no
steering force)
2.5 V
Engine running
Steering wheel: steer-
ing
1.6 V – 3.4 V
(The value is changed
according to steering
left or right)
17
(W)
Ground
Torque sensor refer-
ence voltage
Output
Ignition switch: ON
3.3 V
19
(W)
Ground
Reference signal R1
Input
Ignition switch: ON
Steering wheel: Not
steering (There is no
steering force)
—
Engine running
Steering wheel: steer-
ing
—
21
(B)
Ground
Ground
—
Always
0 V
EPS CONTROL UNIT
STC-13
< ECU DIAGNOSIS INFORMATION >
C
D
E
F
H
I
J
K
L
M
A
B
STC
N
O
P
Fail-Safe
INFOID:0000000011279644
• If any malfunction occurs in the system and the control unit detects the malfunction, the EPS warning lamp in
the combination meter turns ON to indicate system malfunction.
• When EPS warning lamp is ON, the system enters into a instruction steering state. (turning force at steering
wheel becomes heavy.)
• Under abnormal vehicle speed signal conditions, vehicle speed is judged as constant.
Protection Function
INFOID:0000000011279645
EPS control unit decreases the output signal to EPS motor during continuous extreme use of the power steer-
ing function (e.g., full steering) for protection of the EPS motor and EPS control unit (Overload protection con-
trol).
DTC Inspection Priority Chart
INFOID:0000000011279646
When multiple DTCs are detected simultaneously, check one by one depending on the following priority list:
DTC Index
INFOID:0000000011279647
24
(Y)
Ground
Position signal S2
(Sine)
Input
Ignition switch: ON
Steering wheel: Not
steering (There is no
steering force)
—
Engine running
Steering wheel: steer-
ing
—
26
(R)
Ground
Position signal S (Co-
sine)
Input
Ignition switch: ON
Steering wheel: Not
steering (There is no
steering force)
—
Engine running
Steering wheel: steer-
ing
—
Terminal No.
(Wire Color)
Description
Condition
Value
(Approx.)
+
−
Signal name
Input/Output
Priority
Priority order item (DTC)
1
U1000 CAN COMM CIRCUIT
2
C1609 CAN VHCL SPEED
3
C1601 BATTERY VOLT
4
Other than the above
DTC
Items (CONSULT screen terms)
Reference
C1601
BATTERY VOLT
C1604
TORQUE SENSOR
C1606
EPS MOTOR
C1607
EEPROM
C1608
CONTROL UNIT
C1609
CAN VHCL SPEED
U1000
CAN COMM CIRCUIT
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