Infiniti FX35, FX50 (S51). Manual - part 342

CCS-188

< BASIC INSPECTION >

[DCA]

DIAGNOSIS AND REPAIR WORK FLOW

BASIC INSPECTION

DIAGNOSIS AND REPAIR WORK FLOW

Work Flow

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OVERALL SEQUENCE

DETAILED FLOW

1.

INTERVIEW FOR MALFUNCTION

It is also important to clarify the customer concerns before starting the inspection. Interview the customer
about the concerns carefully and understand the symptoms fully. 
NOTE:

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CCS

DIAGNOSIS AND REPAIR WORK FLOW

CCS-189

< BASIC INSPECTION >

[DCA]

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The customers are not professionals. Never assume that “maybe the customer means···” or “maybe the cus-
tomer mentioned this symptom”. 

>> GO TO 2.

2.

SELF-DIAGNOSIS WITH CONSULT-III

1.

Perform “All DTC Reading” with CONSULT-III. 

2.

Check if the DTC is detected on the self-diagnosis results of “ICC” and/or “ACCELE PEDAL ACT”. 

Is any DTC detected?

YES

>> GO TO 5.

NO

>> GO TO 3.

3.

ACTION TEST

Perform DCA system action test to check the operation status. Refer to 

CCS-191, "ACTION TEST : Descrip-

tion"

. 

Check if any other malfunctions occur. 

>> GO TO 4.

4.

SYMPTOM DIAGNOSIS

Perform the applicable diagnosis according to the diagnosis chart by symptom. Refer to 

CCS-363, "Symptom

Table"

. 

>> GO TO 6.

5.

TROUBLE DIAGNOSIS BY DTC

1.

Check the DTC in the self-diagnosis results. 

2.

Perform trouble diagnosis for the detected DTC. Refer to 

CCS-341, "DTC Index"

 (ICC) and/or 

CCS-362,

"DTC Index"

 (ACCELE PEDAL ACT). 

NOTE:
If “DTC: U1000” is detected, first diagnose the CAN communication system or ITS communication system. 

>> GO TO 6.

6.

MALFUNCTIONING PART REPAIR

Repair or replace the identified malfunctioning parts. 

>> GO TO 7.

7.

REPAIR CHECK (SELF-DIAGNOSIS WITH CONSULT-III)

1.

Erases self-diagnosis results. 

2.

Perform “All DTC Reading” again after repairing or replacing the specific items. 

3.

Check if any DTC is detected in self-diagnosis results of “ICC” and “ACCELE PEDAL ACT”. 

Is any DTC detected?

YES

>> GO TO 5.

NO

>> GO TO 8.

8.

REPAIR CHECK (ACTION TEST)

Perform the DCA system action test. Check that the malfunction symptom is solved or no other symptoms
occur.

Is there a malfunction symptom?

YES

>> GO TO 4.

NO

>> INSPECTION END

CCS-190

< BASIC INSPECTION >

[DCA]

INSPECTION AND ADJUSTMENT

INSPECTION AND ADJUSTMENT

ADDITIONAL SERVICE WHEN REPLACING CONTROL UNIT (ICC SENSOR IN-
TEGRATED UNIT)

ADDITIONAL SERVICE WHEN REPLACING CONTROL UNIT (ICC SENSOR INTE-
GRATED UNIT) : Description

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• Always perform the laser beam aiming adjustment after removing and installing or replacing the ICC sensor

integrated unit. 

CAUTION:

The system does not operate normally unless the laser beam aiming adjustment is performed.
Always perform it. 

• Perform the DCA system action test check that the DCA system operates normally. 

ADDITIONAL SERVICE WHEN REPLACING CONTROL UNIT (ICC SENSOR INTE-
GRATED UNIT) : Special Repair Requirement

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1.

LASER BEAM AIMING ADJUSTMENT

Adjust the laser beam aiming. Refer to 

CCS-13, "LASER BEAM AIMING ADJUSTMENT : Description"

. 

>> GO TO 2.

2.

DCA SYSTEM ACTION TEST

1.

Perform the DCA system action test. Refer to 

CCS-191, "ACTION TEST : Description"

.

2.

Check that the DCA system operates normally. 

>> INSPECTION END

ADDITIONAL SERVICE WHEN REPLACING CONTROL UNIT (ACCELERATOR
PEDAL ASSEMBLY)

ADDITIONAL SERVICE WHEN REPLACING CONTROL UNIT (ACCELERATOR 
PEDAL ASSEMBLY) : Description

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• Always perform accelerator pedal released position learning when replacing the accelerator pedal assembly

or disconnecting the accelerator pedal position sensor connector. 

• Perform the DCA system action test check that the DCA system operates normally. 

ADDITIONAL SERVICE WHEN REPLACING CONTROL UNIT (ACCELERATOR 
PEDAL ASSEMBLY) : Special Repair Requirement

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1.

ACCELERATOR PEDAL RELEASED POSITION LEARNING

Perform accelerator pedal released position learning. Refer to 

EC-25, "ACCELERATOR PEDAL RELEASED

POSITION LEARNING : Description"

 (VQ35HR) or 

EC-581, "ACCELERATOR PEDAL RELEASED POSI-

TION LEARNING : Description"

 (VK50VE). 

>> GO TO 2.

2.

DCA SYSTEM ACTION TEST

1.

Perform the DCA system action test. Refer to 

CCS-191, "ACTION TEST : Description"

. 

2.

Check that the DCA system operates normally. 

>> INSPECTION END

ACTION TEST

CCS

INSPECTION AND ADJUSTMENT

CCS-191

< BASIC INSPECTION >

[DCA]

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ACTION TEST : Description

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Always perform the DCA system action test to check that the system operates normally after replacing the ICC
sensor integrated unit, replacing the accelerator pedal assembly, or repairing any DCA system malfunction. 

CAUTION:

Perform the DCA system action test after checking that the ICC system operates normally because the
DCA system shares components with the ICC system. 

ACTION TEST : Special Repair Requirement (Distance Control Assist)

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NOTE:
When the ICC system is set, the information display changes to the ICC system display. 

1.

ICC SYSTEM ACTION TEST

Perform the ICC system action test. Refer to 

CCS-18, "ACTION TEST : Description"

. 

>> GO TO 2.

2.

CHECK DCA SYSTEM SETTING

1.

Start the engine.

2.

Check that the DCA system setting can be enabled/disabled on the navigation screen.

3.

Turn OFF the ignition switch and wait for 5 seconds or more.

4.

Check that the previous setting is saved when the engine starts again.

>> GO TO 3.

3.

CHECK DCA SWITCH

1.

Start the engine.

2.

After starting the engine wait for 5 seconds or more. 

3.

Enable the setting of the DCA system on the navigation screen.

4.

Press the DCA switch (1). 

5.

Check that the DCA system switch indicator (2) on the informa-
tion display illuminates. 

6.

Check that the DCA system switch indicator turns off when the
system is turned OFF by pressing the DCA switch. 

7.

Check that the DCA system switch indicator turns OFF when the
engine starts again.

NOTE:
• The DCA system switch indicator does not illuminate even when

the DCA switch is turned ON within approximately 5 seconds after
starting the engine.

• When the DCA system setting is disabled on the navigation

screen, the DCA system switch indicator is not turned ON by pressing the DCA switch.

If the accelerator pedal assembly is not replaced>>INSPECTION END
If the accelerator pedal assembly is replaced>>GO TO 4.

4.

CHECK DCA SYSTEM OPERATION

Check that the accelerator pedal actuator operates by the “Active Test” items “ACCELERATOR PEDAL
ACTUATOR TEST1” and “ACCELERATOR PEDAL ACTUATOR TEST2” of “ACCELE PEDAL ACT” with
CONSULT-III. 

>> INSPECTION END

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