Nissan Altima HL32 Hybrid. Manual - part 1062

C1609 VEHICLE SPEED SIGNAL

STC-27

< COMPONENT DIAGNOSIS >

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C1609 VEHICLE SPEED SIGNAL

Description

INFOID:0000000004212850

The vehicle speed signal is transmitted from brake ECU to EPS control unit via CAN communication.

DTC Logic

INFOID:0000000004212851

DTC DETECTION LOGIC

DTC CONFIRMATION PROCEDURE

1.

ERASE DTC MEMORY

 With CONSULT-III

1. Record DTC.

2. Erase DTC once.

NOTE:

After erasing DTC record, currently occurred DTC can be detected by reading out DTC again.

>> GO TO 2.

2.

PERFORM DTC CONFIRMATION

 With CONSULT-III

1. Turn the ignition switch ON (READY).

2. Drive at 30 km/h (19 MPH) or more for approx. 1 minute.

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

YES

>> Proceed to 

STC-27, "Diagnosis Procedure"

.

NO

>> INSPECTION END

Diagnosis Procedure

INFOID:0000000004212852

1.

PERFORM SELF-DIAGNOSIS AGAIN

 With CONSULT-III

Perform “DTC CONFIRMATION PROCEDURE” (self-diagnosis) again. Refer to 

STC-27, "DTC Logic"

.

Is DTC “U0129” detected?

YES

>> Proceed to 

STC-39, "Diagnosis Procedure"

.

NO

>> GO TO 2.

2.

CHECK DTC WITH BRAKE ECU

With CONSULT-III

 Perform brake ECU self-diagnosis.
Is any error system detected?

YES

>> Check the error system.

NO

>> Replace EPS control unit. Refer to 

STC-58, "Removal and Installation"

.

DTC

Item

(CONSULT-III screen term)

DTC detecting condition

Possible cause

C1609

VHCL SPEED SIGNAL

Malfunction is detected in vehicle speed signal that is 
output from brake ECU through CAN communication.
(Improper signal inputs while driving.)

• Wheel sensor
• Brake  ECU
• Harness or connector

(CAN communication 
line)

• EPS control unit

STC-28

< COMPONENT DIAGNOSIS >

C1609 VEHICLE SPEED SIGNAL

Special Repair Requirement

INFOID:0000000004212853

1.

INITIALIZE EPS MOTOR ANGLE SENSOR AND CALIBRATE TORQUE SENSOR AGAIN

Always perform EPS motor angle sensor initialization and torque sensor calibration after replacing EPS con-

trol unit or steering gear assembly. Refer to 

STC-5, "EPS MOTOR ANGLE SENSOR INITIALIZATION AND

TORQUE SENSOR CALIBRATION : Special Repair Requirement"

.

>> END

C1613 TORQUE SENSOR CALIBRATION

STC-29

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C1613 TORQUE SENSOR CALIBRATION

Description

INFOID:0000000004212854

This DTC does not indicate a malfunction. The EPS control unit outputs this DTC when it determines that

torque sensor calibration has not been performed. When ignition power is low voltage, torque sensor calibra-

tion cannot be performed.

DTC Logic

INFOID:0000000004212855

DTC DETECTION LOGIC

DTC CONFIRMATION PROCEDURE

1.

ERASE DTC MEMORY

 With CONSULT-III

1. Record DTC.

2. Erase DTC once.

NOTE:

After erasing DTC record, currently occurred DTC can be detected by reading out DTC again.

>> GO TO 2.

2.

PERFORM DTC CONFIRMATION

 With CONSULT-III

1. Turn the ignition switch ON (READY).

2. Steer 360

° leftward and rightward slowly.

3. Return the steering wheel to the straight-ahead position.

4. Perform the self-diagnosis.
Is DTC “C1613” detected?

YES

>> Proceed to 

STC-29, "Diagnosis Procedure"

.

NO

>> INSPECTION END

Diagnosis Procedure

INFOID:0000000004212856

1.

INITIALIZE EPS MOTOR ANGLE SENSOR AND CALIBRATE TORQUE SENSOR

 With CONSULT-III

Perform EPS motor angle sensor initialization and torque sensor calibration. Refer to 

STC-5, "EPS MOTOR

ANGLE SENSOR INITIALIZATION AND TORQUE SENSOR CALIBRATION : Special Repair Requirement"

.

Were they performed correctly?

YES

>> GO TO 2.

NO

>> Check the malfunctioning cause.

2.

PERFORM SELF-DIAGNOSIS AGAIN

 With CONSULT-III

Perform “DTC CONFIRMATION PROCEDURE” (self-diagnosis) again. Refer to 

STC-29, "DTC Logic"

.

Is DTC “C1613” detected?

YES

>> GO TO 3.

NO

>> INSPECTION END

3.

CHECK THE NUMBER OF WORK SUPPORT IMPLEMENTATIOS

Check the numbers of EPS motor angle sensor initialization and torque sensor calibration.

DTC

Item

(CONSULT-III screen term)

DTC detecting condition

Possible cause

C1613

TQ SE CLB NOT PFRM

Torque sensor calibration is not performed.

• Torque sensor calibra-

tion not performed

STC-30

< COMPONENT DIAGNOSIS >

C1613 TORQUE SENSOR CALIBRATION

How many times were they implemented?

Once/twice>>GO TO 1.

More than twice>>Replace EPS control unit, refer to 

STC-58, "Removal and Installation"

. Then GO TO 4.

4.

INITIALIZE EPS MOTOR ANGLE SENSOR AND CALIBRATE TORQUE SENSOR AGAIN

 With CONSULT-III

Perform EPS motor angle sensor initialization and torque sensor calibration again. Refer to 

STC-5, "EPS

MOTOR ANGLE SENSOR INITIALIZATION AND TORQUE SENSOR CALIBRATION : Special Repair

Requirement"

.

Were they performed correctly?

YES

>> GO TO 5.

NO

>> Check the malfunctioning cause.

5.

PERFORM SELF-DIAGNOSIS AGAIN

 With CONSULT-III

Perform “DTC CONFIRMATION PROCEDURE” (self-diagnosis) again. Refer to 

STC-29, "DTC Logic"

.

Is DTC “C1613” detected?

YES

>> GO TO 6.

NO

>> INSPECTION END

6.

CHECK THE NUMBER OF WORK SUPPORT IMPLEMENTATIOS

Check the numbers of EPS motor angle sensor initialization and torque sensor calibration after replacement of

EPS control unit.
How many times were they implemented?

Once/twice>>GO TO 4.

More than twice>>Torque sensor is malfunctioning. Replace steering gear assembly. Refer to 

ST-12,

"Removal and Installation"

.

Special Repair Requirement

INFOID:0000000004212857

1.

INITIALIZE EPS MOTOR ANGLE SENSOR AND CALIBRATE TORQUE SENSOR AGAIN

Always perform EPS motor angle sensor initialization and torque sensor calibration after replacing EPS con-

trol unit or steering gear assembly. Refer to 

STC-5, "EPS MOTOR ANGLE SENSOR INITIALIZATION AND

TORQUE SENSOR CALIBRATION : Special Repair Requirement"

.

>> END