Nissan Altima HL32 Hybrid. Manual - part 1056

DIAGNOSIS AND REPAIR WORKFLOW

STC-3

< BASIC INSPECTION >

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BASIC INSPECTION

DIAGNOSIS AND REPAIR WORKFLOW

Work Flow

INFOID:0000000004212815

DETAILED FLOW

1.

COLLECT THE INFORMATION FROM THE CUSTOMER

It is also important to clarify customer complaints before inspection. First of all, reproduce symptoms, and

understand them fully. Ask customer about his/her complaints carefully. In some cases, it will be necessary to

check symptoms by driving vehicle with customer.

>> GO TO 2.

2.

CHECK EPS WARNING LAMP STATUS

Check EPS warning lamp operation. Refer to 

STC-41, "Description"

.

Is the operation normal?

YES

>> GO TO 3.

NO

>> Proceed to 

STC-41, "Diagnosis Procedure"

.

3.

CHECK DTC WITH EPS CONTROL UNIT

 With CONSULT-III

Perform the self-diagnosis.
Is any malfunction detected by self-diagnosis?

YES

>> GO TO 4.

NO

>> GO TO 7.

4.

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 5.

5.

PERFORM DTC CONFIRMATION PROCEDURE

 With CONSULT-III

Perform “DTC CONFIRMATION PROCEDURE” (self-diagnosis) with recorded DTC.

If two or more DTCs are detected, refer to 

STC-51, "DTC Inspection Priority Chart"

 and determine trouble

diagnosis order.
Is any malfunction detected by self-diagnosis?

YES

>> GO TO 6.

NO

>> Check Intermittent Incident. Refer to 

GI-42, "Intermittent Incident"

.

6.

DETECT MALFUNCTIONING PART BY DIAGNOSIS PROCEDURE

Perform the diagnosis applicable to the displayed DTC. Refer to 

STC-51, "DTC Index"

.

>> GO TO 9.

7.

PERFORM DIAGNOSIS BY SYMPTOM

Perform the diagnosis or repair applicable to the symptom. Refer to 

STC-53, "Symptom Table"

.

>> GO TO 8.

8.

CHECK INPUT/OUTPUT SIGNAL

STC-4

< BASIC INSPECTION >

DIAGNOSIS AND REPAIR WORKFLOW

Check input/output signal standard of EPS control unit. Refer to 

STC-43, "Reference Value"

.

Is the inspection result normal?

YES

>> GO TO 10.

NO

>> GO TO 2.

9.

FINAL CHECK (WHEN DTC WAS DETECTED)

 With CONSULT-III

Perform “DTC CONFIRMATION PROCEDURE” (self-diagnosis) with applicable DTC.
Is any malfunction detected by self-diagnosis?

YES

>> GO TO 6.

NO

>> END

10.

FINAL CHECK (WHEN SYMPTOM OCCURRED)

Make sure that the symptom is not detected.
Does symptom remain?

YES

>> GO TO 7.

NO

>> END

INSPECTION AND ADJUSTMENT

STC-5

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INSPECTION AND ADJUSTMENT

ADDITIONAL SERVICE WHEN REPLACING CONTROL UNIT
ADDITIONAL SERVICE WHEN REPLACING CONTROL UNIT : Description

INFOID:0000000004212816

When replacing EPS control unit, this procedure must be performed.

ADDITIONAL SERVICE WHEN REPLACING CONTROL UNIT : Special Repair Re-
quirement

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1.

PERFORM EPS MOTOR ANGLE SENSOR INITIALIZATION AND TORQUE SENSOR CALIBRATION

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"

.

>> END

ADDITIONAL SERVICE WHEN REPLACING STEERING GEAR ASSEMBLY
ADDITIONAL SERVICE WHEN REPLACING STEERING GEAR ASSEMBLY : De-
scription

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When replacing steering gear assembly, this procedure must be performed.

ADDITIONAL SERVICE WHEN REPLACING STEERING GEAR ASSEMBLY : Special 
Repair Requirement

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1.

PERFORM EPS MOTOR ANGLE SENSOR INITIALIZATION AND TORQUE SENSOR CALIBRATION

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"

.

>> END

EPS MOTOR ANGLE SENSOR INITIALIZATION AND TORQUE SENSOR CALI-
BRATION
EPS MOTOR ANGLE SENSOR INITIALIZATION AND TORQUE SENSOR CALIBRA-
TION : Description

INFOID:0000000004212820

Perform EPS motor angle sensor initialization and torque sensor calibration when replacing EPS control unit,

replacing steering gear assembly and/or unbalanced steering wheel turning force.

NOTE:

• If DTC “C1604 TORQUE SENSOR” is detected, torque sensor calibration cannot be performed.

• If DTC “C1606 EPS MOTOR” is detected, EPS motor angle sensor initialization cannot be performed.

EPS MOTOR ANGLE SENSOR INITIALIZATION AND TORQUE SENSOR CALIBRA-
TION : Special Repair Requirement

INFOID:0000000004212821

1.

CHECK IGNITION POWER SUPPLY

 With CONSULT-III

1. Turn the ignition switch ON (READY).

2. Select “DATA MONITOR” mode for “EPS”.

3. Read out the value of “IGN VOLT” and check voltage.

NOTE:

If ignition power supply voltage is 10 V or less, initialization and calibration cannot be performed.

Is the voltage 10 – 14V?

YES

>> GO TO 2.

STC-6

< BASIC INSPECTION >

INSPECTION AND ADJUSTMENT

NO

>> Charge or replace battery.

2.

 ERASE DTC

 With CONSULT-III

1. Turn the ignition switch ON (READY).

2. Perform the self-diagnosis.

NOTE:

• If DTC “C1604 TORQUE SENSOR” is detected, torque sensor calibration cannot be performed. Erase

DTC memory before starting calibration.

• If DTC “C1606 EPS MOTOR” is detected, EPS motor angle sensor initialization cannot be performed.

Erase DTC memory before starting initialization.

Is any malfunction detected by self-diagnosis?

YES

>> Erase DTC memory or check the malfunctioning system.

NO

>> GO TO 3.

3.

PERFORM EPS MOTOR ANGLE SENSOR INITIALIZATION AND TORQUE SENSOR CALIBRATION

 With CONSULT-III

1. Turn the ignition switch ON (READY).

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

3. Select “WORK SUPPORT” mode for “EPS”.

4. Select “SENSOR CALIBLATION”.

5. Follow the procedures on the CONSULT-III display to clear the EPS motor angle sensor calibration value,

initialize the EPS motor angle sensor value, and calibrate the torque sensor.

CAUTION:

• When initializing the EPS motor angle sensor value, observe the following to stabilize sensor

voltage:

After turning the ignition switch ON or READY mode, wait for at least 2.5 seconds before turning

the steering wheel. Do not turn the steering wheel quickly.

• The steering wheel will vibrate during torque sensor calibration. Do not touch the steering wheel

while it is vibrating or for 2 seconds after it stops.

>> END