Nissan Tiida C11. Manual - part 1224

C1610 CAN ENG RPM

STC-19

< COMPONENT DIAGNOSIS >

[EPS]

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C1610 CAN ENG RPM

Description

INFOID:0000000001716753

EPS control unit receives engine RPM input from the ECM through the CAN communication lines.

DTC Logic

INFOID:0000000001716754

DTC DETECTION LOGIC

DTC CONFIRMATION PROCEDURE

1.

CHECK SELF-DIAGNOSIS RESULTS

Check the self-diagnosis results.

Is above displayed on the self-diagnosis display?

YES

>> Proceed to diagnosis procedure. Refer to 

STC-19, "Diagnosis Procedure"

.

NO

>> INSPECTION END

Diagnosis Procedure

INFOID:0000000001697730

1.

CHECK DTC WITH ECM

Perform self-diagnosis for ECM. Refer to 

EC-107, "CONSULT-III Function"

 (HR16DE with EURO-OBD), 

EC-

462, "CONSULT-III Function"

 (HR16DE without EURO-OBD), 

EC-772, "CONSULT-III Function"

 (MR18DE),

EC-1104, "Diagnosis Description"

 (K9K).

Is any malfunction detected by self-diagnosis?

YES

>> Check the malfunctioning system.

NO

>> GO TO 2.

2.

CHECK EPS CONTROL UNIT

Check EPS control unit input/output signal. Refer to 

STC-22, "EPS Control Unit Input/Output Signal Reference

Value"

.

OK or NG

OK

>> GO TO 3.

NG

>> Check EPS control unit pin terminals for damage or loose connection with harness connector. If

any items are damaged, repair or replace damaged parts.

3.

CHECK DTC

Perform the self-diagnosis, after driving a vehicle for a while.

OK or NG

OK

>> INSPECTION END

NG

>> Perform self-diagnosis for ECM. Refer to 

EC-107, "CONSULT-III Function"

 (HR16DE with EURO-

OBD), 

EC-462, "CONSULT-III Function"

 (HR16DE without EURO-OBD), 

EC-772, "CONSULT-III

Function"

 (MR18DE), 

EC-1104, "Diagnosis Description"

 (K9K).

Special Repair Requirement (Models with ESP)

INFOID:0000000001730969

1.

ADJUSTMENT OF STEERING ANGLE SENSOR NEUTRAL POSITION

DTC

Display item

Malfunction detected condition

Possible cause

C1610

CAN ENG RPM

When the malfunction is detected in engine status 
signal received with CAN communication.

• Harness or connector
• CAN communication line
• EPS control unit

Self-diagnosis results

CAN ENG RPM

STC-20

< COMPONENT DIAGNOSIS >

[EPS]

C1610 CAN ENG RPM

Always perform the neutral position adjustment for the steering angle sensor, when replacing the EPS control
unit. Refer to 

BRC-90, "ADJUSTMENT OF STEERING ANGLE SENSOR NEUTRAL POSITION : Descrip-

tion"

.

>> END

U1000 CAN COMM CIRCUIT

STC-21

< COMPONENT DIAGNOSIS >

[EPS]

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U1000 CAN COMM CIRCUIT

Description

INFOID:0000000001716748

CAN (Controller Area Network) is a serial communication line for real time application. It is an on-vehicle mul-
tiplex communication line with high data communication speed and excellent error detection ability. Many elec-
tronic control units are equipped onto a vehicle, and each control unit shares information and links with other
control units during operation (not independent). In CAN communication, control units are connected with 2
communication lines (CAN-H line, CAN-L line) allowing a high rate of information transmission with less wiring.
Each control unit transmits/receives data but selectively reads required data only.

DTC Logic

INFOID:0000000001716749

DTC DETECTION LOGIC

DTC CONFIRMATION PROCEDURE

1.

CHECK SELF-DIAGNOSIS RESULTS

Check the self-diagnosis results.

Is above displayed on the self-diagnosis display?

YES

>> Proceed to diagnosis procedure. Refer to 

STC-21, "Diagnosis Procedure"

.

NO

>> INSPECTION END

Diagnosis Procedure

INFOID:0000000001697731

1.

CHECK CAN COMMUNICATION CIRCUIT

With CONSULT-III

1.

Turn ignition switch ON and start engine.

2.

Select “SELF-DIAG RESULTS” mode for “EPS” with CONSULT-III.

3.

Perform the self-diagnosis.

Is the “CAN COMM CIRCUIT [U1000]” displayed?

YES

>> Print out CONSULT-II screen and go to 

LAN-30, "CAN System Specification Chart"

.

NO

>> INSPECTION END

Special Repair Requirement (Models with ESP)

INFOID:0000000001730970

1.

ADJUSTMENT OF STEERING ANGLE SENSOR NEUTRAL POSITION

Always perform the neutral position adjustment for the steering angle sensor, when replacing the EPS control
unit. Refer to 

BRC-90, "ADJUSTMENT OF STEERING ANGLE SENSOR NEUTRAL POSITION : Descrip-

tion"

.

>> END

DTC

Display item

Malfunction detected condition

Possible cause

U1000

CAN COMM CIRCUIT

When EPS control unit is not transmitting or receiving 
CAN communication signal for 2 seconds or more.

• Harness or connector
• CAN communication line
• EPS control unit

Self-diagnosis results

CAN COMM CIRCUIT

STC-22

< ECU DIAGNOSIS >

[EPS]

EPS CONTROL UNIT

ECU DIAGNOSIS

EPS CONTROL UNIT

EPS Control Unit Input/Output Signal Reference Value

INFOID:0000000001716757

SPECIFICATIONS WITH CONSULT-III

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.

*1: In the front of the value, “L” is displayed at steering left and “R” is displayed at steering right.

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

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

*4: It turns to OFF after waiting for a short period of time.

Monitor item (Unit)

Content

Condition

Display value

MOTOR VOL (V)

Power supply voltage for 
EPS control unit

Ignition switch: ON

Battery voltage

TORQUE SENSOR (Nm)

Steering wheel turning 
force

Engine running

Steering wheel: Not 
steering (There is no 
steering force) 

0.00 Nm

Steering wheel: Steer-
ing

0 – 8.19 Nm

*1

 (The value 

is changed according to 
steering left or right)

MOTOR SIG (A)

Command current to EPS 
motor

Engine running

Steering wheel: Not 
steering (There is no 
steering force)

0.00 A

Steering wheel: Steer-
ing

0 – 65.00 A (The value is 
changed according to 
steering left or right)

MOTOR CURRENT (A)

Consumption current of 
EPS motor

Engine running

Steering wheel: Not 
steering (There is no 
steering force)

0.00 A

Steering wheel: Steer-
ing

0 – 65.00 A

*2

 (The value 

is changed according to 
steering left or right)

VEHICLE SPEED (km/h) or (mph)

Vehicle speed

Vehicle stopped

0 km/h (0 mph)

While driving

Approximately equal to 
the indication on speed-

ometer (Inside of 

±

10%)

*3

WARNING LAMP (ON/OFF)

EPS warning lamp condi-
tion

EPS warning lamp: ON

ON

EPS warning lamp: OFF

OFF

DERATING STAT (ON/OFF)

Protect overload status

Engine running

Steering wheel: Nor-
mal steering

OFF

Steering wheel: Steer-
ing over the stop

ON

*4

ENGINE STATUS (RUN/STOP)

Engine status

Engine stopped
(Engine speed: Less than 400 rpm)

STOP

Engine running
(Engine speed: 400 rpm or more)

RUN