Nissan Versa Note. Manual - part 769

 

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Nissan Versa Note. Manual - part 769

 

 

C1607, C1608 EPS CONTROL UNIT

STC-25

< DTC/CIRCUIT DIAGNOSIS >

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C1607, C1608 EPS CONTROL UNIT

DTC Logic

INFOID:0000000009667188

DTC DETECTION LOGIC

DTC CONFIRMATION PROCEDURE

1.

PRECONDITIONING

If “DTC CONFIRMATION PROCEDURE” has been previously conducted, always turn ignition switch OFF and

wait at least 10 seconds before conducting the next test.

>> GO TO 2.

2.

DTC REPRODUCTION PROCEDURE

With CONSULT

1. Turn the ignition switch OFF to ON.

2. Perform “EPS” self-diagnosis.
Is DTC “C1607” or “C1608” detected?

YES

>> Proceed to diagnosis procedure. Refer to 

STC-25, "Diagnosis Procedure"

.

NO

>> Inspection End.

Diagnosis Procedure

INFOID:0000000009667189

1.

PERFORM SELF-DIAGNOSIS

With CONSULT

1. Turn the ignition switch OFF to ON.

2. Erase self-diagnosis results for “EPS”.

3. Perform “EPS” self-diagnosis.
Is DTC “C1607” or “C1608” detected?

YES

>> Replace EPS control unit. Refer to 

STC-37, "Removal and Installation"

.

NO

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

any item are damaged, repair or replace malfunctioning component.

DTC

Display item

Malfunction detected condition

Possible cause

C1607

EEPROM

When the memory (EEPROM) system malfunction is 
detected in EPS control unit.

EPS control unit

C1608

CONTROL UNIT

When the internal malfunction is detected in EPS 
control unit.

STC-26

< DTC/CIRCUIT DIAGNOSIS >

C1609 VEHICLE SPEED SIGNAL

C1609 VEHICLE SPEED SIGNAL

Description

INFOID:0000000009667190

EPS control unit receives the vehicle speed signal from ABS actuator and electric unit (control unit) via CAN

communication line.

DTC Logic

INFOID:0000000009667191

DTC DETECTION LOGIC

DTC CONFIRMATION PROCEDURE

1.

PRECONDITIONING

If “DTC CONFIRMATION PROCEDURE” has been previously conducted, always turn ignition switch OFF and

wait at least 10 seconds before conducting the next test.

>> GO TO 2.

2.

DTC REPRODUCTION PROCEDURE

With CONSULT

1. Turn the ignition switch OFF to ON.

2. Perform “EPS” self-diagnosis.
Is DTC “C1609” detected?

YES

>> Proceed to diagnosis procedure. Refer to 

STC-26, "Diagnosis Procedure"

.

NO

>> Inspection End.

Diagnosis Procedure

INFOID:0000000009667192

1.

PERFORM ABS ACTUATOR AND ELECTRIC UNIT (CONTROL UNIT) SELF-DIAGNOSIS

With CONSULT

1. Turn the ignition switch OFF to ON.

2. Perform “ABS” self-diagnosis. 
Is any DTC detected?

YES

>> Check the DTC.

NO

>> GO TO 2.

2.

PERFORM SELF-DIAGNOSIS

With CONSULT

Perform “EPS” self-diagnosis.
Is DTC “C1609” detected?

YES

>> Replace EPS control unit. Refer to 

STC-37, "Removal and Installation"

.

NO

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

any item are damaged, repair or replace malfunctioning component.

DTC

Display item

Malfunction detected condition

Possible cause

C1609

CAN VHCL SPEED

• Malfunction is detected in vehicle speed signal that 

is output from ABS actuator and electric unit (con-
trol unit) via CAN communication.

• ABS actuator and electric unit (control unit) input 

signal error is detected.

• Harness or connector
• CAN communication line
• EPS control unit
• ABS malfunction 
- Vehicle speed signal error

C1610 ENGINE STATUS SIGNAL

STC-27

< DTC/CIRCUIT DIAGNOSIS >

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C1610 ENGINE STATUS SIGNAL

Description

INFOID:0000000009667193

EPS control unit receives the engine status signal from ECM via CAN communication line.

DTC Logic

INFOID:0000000009667194

DTC DETECTION LOGIC

DTC CONFIRMATION PROCEDURE

1.

PRECONDITIONING

If “DTC CONFIRMATION PROCEDURE” has been previously conducted, always turn ignition switch OFF and

wait at least 10 seconds before conducting the next test.

>> GO TO 2.

2.

DTC REPRODUCTION PROCEDURE

With CONSULT

1. Turn the ignition switch OFF to ON.

2. Perform “EPS” self-diagnosis.
Is DTC “C1610” detected?

YES

>> Proceed to diagnosis procedure. Refer to 

STC-27, "Diagnosis Procedure"

.

NO

>> Inspection End.

Diagnosis Procedure

INFOID:0000000009667195

1.

PERFORM ECM SELF-DIAGNOSIS

With CONSULT

1. Turn the ignition switch OFF to ON.

2. Perform “ENGINE” self-diagnosis. Refer to 

EC-60, "CONSULT Function"

.

Is any DTC detected?

YES

>> Check the DTC. Refer to 

EC-86, "DTC Index"

.

NO

>> GO TO 2.

2.

PERFORM SELF-DIAGNOSIS

With CONSULT

Perform “EPS” self-diagnosis.
Is DTC “C1610” detected?

YES

>> Replace EPS control unit. Refer to 

STC-37, "Removal and Installation"

.

NO

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

any item are damaged, repair or replace malfunctioning components.

DTC

Display item

Malfunction detected condition

Possible cause

C1610

CAN ENG RPM

• Malfunction is detected in engine status signal 

that is output from ECM via CAN communica-
tion.

• ECM input signal error is detected.

• Harness or connector
• CAN communication line
• EPS control unit
• ECM 
- Engine status signal error

STC-28

< DTC/CIRCUIT DIAGNOSIS >

U1000 CAN COMM CIRCUIT

U1000 CAN COMM CIRCUIT

Description

INFOID:0000000009667196

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 communicate data but selectively reads required data only.

DTC Logic

INFOID:0000000009667197

DTC DETECTION LOGIC

DTC CONFIRMATION PROCEDURE

1.

PRECONDITIONING

If “DTC CONFIRMATION PROCEDURE” has been previously conducted, always turn ignition switch OFF and

wait at least 10 seconds before conducting the next test.

>> GO TO 2.

2.

DTC REPRODUCTION PROCEDURE

 With CONSULT

1. Turn the ignition switch OFF to ON.

2. Perform “EPS” self-diagnosis.
Is DTC “U1000” detected?

YES

>> Proceed to diagnosis procedure. Refer to 

STC-28, "Diagnosis Procedure"

.

NO

>> Inspection End.

Diagnosis Procedure

INFOID:0000000009667198

Proceed to 

LAN-15, "Trouble Diagnosis Flow Chart"

.

DTC

Display item

Malfunction detected condition

Possible cause

U1000

CAN COMM CIRCUIT

EPS control unit is not transmitting/re-
ceiving CAN communication signal for 2 
seconds or more.

• CAN communication error
• EPS control unit

 

 

 

 

 

 

 

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