Nissan Juke (2016 year). Service Repair Manual - part 594

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.

*4: Displays NORMAL in models without Integrated Control System.

ENGINE STATUS (Stop/Run)

Engine speed is displayed from engine status signal via CAN communication.

STEERING MODE (NORMAL/SPORT)

*4

Display the driving mode of Integrated Control System received through CAN 
communication.

Monitor item (Unit)

Remarks

Revision: November 2015

2016 JUKE

EPS CONTROL UNIT

STC-11

< ECU DIAGNOSIS INFORMATION >

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ECU DIAGNOSIS INFORMATION

EPS CONTROL UNIT

Reference Value

INFOID:0000000012199921

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 (

°

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

STEERING MODE

*4

Engine running

Driving mode of Integrated Control 
System: Except SPORT

NORMAL

Driving mode of Integrated Control 
System: SPORT

SPORT

Revision: November 2015

2016 JUKE

STC-12

< ECU DIAGNOSIS INFORMATION >

EPS CONTROL UNIT

*4: Displays NORMAL in models without Integrated Control System.

TERMINAL LAYOUT

PHYSICAL VALUES

Fail-Safe

INFOID:0000000012199922

• If any malfunction occurs in the system, and control unit detects the malfunction, EPS warning lamp on com-

bination meter turns ON to indicate system malfunction.

• When EPS warning lamp is ON, enters into a manual steering state. (Control turning force steering wheel

becomes heavy.)

Protection Function

INFOID:0000000012199923

EPS control unit decreases the output signal to EPS motor while extremely using the power steering function

(e.g., full steering) consecutively for protecting EPS motor and EPS control unit (Overload protection control).

While activating overload protection control, the assist torque gradually decreases, and the steering wheel

turning force becomes heavy. The normal assist torque is recovered if the steering wheel is not turned for a

while.

DTC Inspection Priority Chart

INFOID:0000000012199924

When multiple DTCs are detected simultaneously, check one by one depending on the following priority list. 

JSGIA0834ZZ

Terminal No.

(Wire Color)

Description

Condition

Value

(Approx.)

+

−

Signal name

Input/Output

1

(P)

—

CAN-L

Input/Output

—

—

2

(L)

—

CAN-H

Input/Output

—

—

4

(LG)

Ground

Ignition power supply

Input

Ignition switch: ON

9 – 18.2 V

Ignition switch: OFF

0 V

9

(R)

Ground

Battery power supply

Input

Always

9 – 18.2 V

10

(B)

Ground

Ground

—

Always

0 V

Priority

Priority order item (DTC)

1

U1000 CAN COMM CIRCUIT

2

C1609 VEHICLE SPEED SIGNAL

3

C1601 BATTERY POWER SUPPLY

4

Other than the above

Revision: November 2015

2016 JUKE

EPS CONTROL UNIT

STC-13

< ECU DIAGNOSIS INFORMATION >

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DTC Index

INFOID:0000000012199925

DTC

Items (CONSULT screen terms)

Reference

C1601

BATTERY VOLT

STC-21, "DTC Logic"

C1604

TORQUE SENSOR

STC-23, "DTC Logic"

C1606

EPS MOTOR

STC-24, "DTC Logic"

C1607

EEPROM

STC-25, "DTC Logic"

C1608

CONTROL UNIT

STC-25, "DTC Logic"

C1609

CAN VHCL SPEED

STC-26, "DTC Logic"

U1000

CAN COMM CIRCUIT

STC-27, "DTC Logic"

Revision: November 2015

2016 JUKE

STC-14

< WIRING DIAGRAM >

ELECTRONICALLY CONTROLLED POWER STEERING SYSTEM

WIRING DIAGRAM

ELECTRONICALLY CONTROLLED POWER STEERING SYSTEM 

Wiring Diagram

INFOID:0000000012199926

JRGWC2687GB

Revision: November 2015

2016 JUKE

ELECTRONICALLY CONTROLLED POWER STEERING SYSTEM

STC-15

< WIRING DIAGRAM >

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JRGWC2688GB

Revision: November 2015

2016 JUKE

STC-16

< WIRING DIAGRAM >

ELECTRONICALLY CONTROLLED POWER STEERING SYSTEM

JRGWC2689GB

Revision: November 2015

2016 JUKE

ELECTRONICALLY CONTROLLED POWER STEERING SYSTEM

STC-17

< WIRING DIAGRAM >

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JRGWC2690GB

Revision: November 2015

2016 JUKE