Nissan Qashqai J11. Manual — part 992

STC-28

< DTC/CIRCUIT DIAGNOSIS >

C1604 TORQUE SENSOR

C1604 TORQUE SENSOR

DTC Logic

INFOID:0000000010452116

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/DAST 3” self-diagnosis.

Is DTC “C1604” detected?

YES

>> Proceed to diagnosis procedure. Refer to

STC-28, "Diagnosis Procedure"

.

NO

>> INSPECTION END

Diagnosis Procedure

INFOID:0000000010452117

1.

CHECK CONNECTOR

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

Is the inspection result normal?

YES

>> GO TO 2.

NO

>> Repair or replace error-detected parts.

2.

PERFORM SELF-DIAGNOSIS

With CONSULT

1.

Turn the ignition switch OFF to ON.

2.

Erase self-diagnosis results for “EPS/DAST 3”.

3.

Turn the ignition switch OFF and wait at least 10 seconds or more.

4.

Turn the ignition switch ON.

5.

Perform “EPS/DAST 3” self-diagnosis.

Is DTC “C1604” detected?

YES

>> Replace steering column assembly. Refer to

STC-46, "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 error-detected parts.

DTC

Display item

Malfunction detected condition

Possible cause

C1604

TORQUE SENSOR

When torque sensor output signal is malfunctioning.

• Harness or connector
• Torque sensor
• EPS control unit (steering

column assembly)

C1606 EPS MOTOR

STC-29

< DTC/CIRCUIT DIAGNOSIS >

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C1606 EPS MOTOR

DTC Logic

INFOID:0000000010452118

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/DAST 3” self-diagnosis.

Is DTC “C1606” detected?

YES

>> Proceed to diagnosis procedure. Refer to

STC-29, "Diagnosis Procedure"

.

NO

>> INSPECTION END

Diagnosis Procedure

INFOID:0000000010452119

1.

CHECK CONNECTOR

Check the EPS control unit pin terminals for damage or loose connection with harness connector.
Is the inspection result normal?

YES

>> GO TO 2.

NO

>> Repair or replace error-detected parts.

2.

PERFORM SELF-DIAGNOSIS

With CONSULT

1.

Turn the ignition switch OFF to ON.

2.

Erase self-diagnosis results for “EPS/DAST 3”.

3.

Turn the ignition switch OFF and wait at least 10 seconds or more.

4.

Turn the ignition switch ON.

5.

Perform “EPS/DAST 3” self-diagnosis.

Is DTC “C1606” detected?

YES

>> Replace steering column assembly. Refer to

STC-46, "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 error-detected parts.

DTC

Display item

Malfunction detected condition

Possible cause

C1606

EPS MOTOR

When the motor driver malfunction of EPS control
unit or EPS motor malfunction is detected.

• Harness or connector
• EPS motor (steering column

assembly)

• EPS control unit (steering

column assembly)

STC-30

< DTC/CIRCUIT DIAGNOSIS >

C1607, C1608 EPS CONTROL UNIT

C1607, C1608 EPS CONTROL UNIT

DTC Logic

INFOID:0000000010452121

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/DAST 3” self-diagnosis.

Is DTC “C1607” or “C1608” detected?

YES

>> Proceed to diagnosis procedure. Refer to

STC-30, "Diagnosis Procedure"

.

NO

>> INSPECTION END

Diagnosis Procedure

INFOID:0000000010452122

1.

CHECK CONNECTOR

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

Is the inspection result normal?

YES

>> GO TO 2.

NO

>> Repair or replace error-detected parts.

2.

PERFORM SELF-DIAGNOSIS

With CONSULT

1.

Turn the ignition switch OFF to ON.

2.

Erase self-diagnosis results for “EPS/DAST 3”.

3.

Turn the ignition switch OFF and wait at least 10 seconds or more.

4.

Turn the ignition switch ON.

5.

Perform “EPS/DAST 3” self-diagnosis.

Is DTC “C1607” or “C1608” detected?

YES

>> Replace steering column assembly. Refer to

STC-46, "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 error-detected parts.

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 (steering col-
umn assembly)

C1608

CONTROL UNIT

When the internal malfunction is detected in EPS
control unit.

C1609 VEHICLE SPEED SIGNAL

STC-31

< DTC/CIRCUIT DIAGNOSIS >

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C1609 VEHICLE SPEED SIGNAL

DTC Logic

INFOID:0000000010452124

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/DAST 3” self-diagnosis.

Is DTC “C1609” detected?

YES

>> Proceed to diagnosis procedure. Refer to

STC-31, "Diagnosis Procedure"

.

NO

>> INSPECTION END

Diagnosis Procedure

INFOID:0000000010452125

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. Refer to

BRC-54, "DTC Index"

.

NO

>> GO TO 2.

2.

PERFORM SELF-DIAGNOSIS

With CONSULT

1.

Turn the ignition switch OFF to ON.

2.

Erase self-diagnosis results for “EPS/DAST 3”.

3.

Turn the ignition switch OFF and wait at least 10 seconds or more.

4.

Turn the ignition switch ON.

5.

Perform “EPS/DAST 3” self-diagnosis.

Is DTC “C1609” detected?

YES

>> Replace steering column assembly. Refer to

STC-46, "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 error-detected parts.

DTC

Display item

Malfunction detected condition

Possible cause

C1609

CAN VHCL SPEED

A malfunction is detected in the vehicle speed signal
received with CAN communication.

• Harness or connector (CAN

communication line)

• EPS control unit (steering

column assembly)

• ABS actuator and electric

unit (control unit)

• Vehicle speed signal error