Infiniti FX35, FX50 (S51). Manual - part 314

 

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Infiniti FX35, FX50 (S51). Manual - part 314

 

 

CCS-76

< DTC/CIRCUIT DIAGNOSIS >

[ICC (FULL SPEED RANGE)]

C1A10 RELEASE SWITCH

Is the inspection result normal?

YES

>> INSPECTION END

NO

>> Replace the brake booster. 

Special Repair Requirement

INFOID:0000000005501613

DESCRIPTION

Perform the action test after adjusting the laser beam aiming of ICC sensor integrated unit when the following
operation is performed. 
• Removal and installation of ICC sensor integrated unit
• Replacement of ICC sensor integrated unit

SPECIAL REPAIR REQUIREMENT

1.

LASER BEAM AIMING ADJUSTMENT OF ICC SENSOR INTEGRATED UNIT

Adjust the laser beam aiming of the ICC sensor integrated unit. Refer to 

CCS-13, "LASER BEAM AIMING

ADJUSTMENT : Description"

>> GO TO 2.

2.

CHECK ICC SYSTEM

1.

Erase the “Self Diagnostic Result”, and then perform “All DTC Reading” again after performing the action
test. (Refer to 

CCS-18, "ACTION TEST : Description"

 for action test.)

2.

Check that the ICC system is normal. 

>> WORK END

CCS

C1A11 PRESSURE CONTROL

CCS-77

< DTC/CIRCUIT DIAGNOSIS >

[ICC (FULL SPEED RANGE)]

C

D

E

F

G

H

I

J

K

L

M

B

N

P

A

C1A11 PRESSURE CONTROL

Description

INFOID:0000000005501614

• The brake booster control unit receives the brake fluid pressure command signal from ICC sensor integrated

unit via ITS communication and activates the booster solenoid to operate the brake booster. 

• The brake booster adjusts the brake fluid pressure by driving the booster solenoid. 
• The brake pedal is controlled when the brake booster adjusts the brake fluid pressure. 

DTC Logic

INFOID:0000000005501615

DTC DETECTION LOGIC

NOTE:
If DTC “C1A11” is detected along with DTC “U1000”, first diagnose the DTC “U1000”. Refer to 

CCS-137, "DTC

Logic"

DTC CONFIRMATION PROCEDURE

1.

PERFORM DTC CONFIRMATION PROCEDURE

1.

Start the engine.

2.

Perform the active test item “BOOSTER SOL/V” with CONSULT-III. 

3.

Perform “All DTC Reading”. 

4.

Check if the “C1A11” is detected as the current malfunction in “Self Diagnostic Result” of “ICC”. 

Is “C1A11” detected as the current malfunction?

YES

>> Refer to 

CCS-77, "Diagnosis Procedure"

.

NO

>> Refer to 

GI-36, "Intermittent Incident"

Diagnosis Procedure

INFOID:0000000005501616

1.

CHECK SELF-DIAGNOSIS RESULTS

Check if “U1000” is detected other than “C1A11” in “Self Diagnostic Result” of “ICC”. 

Is “U1000” detected?

YES

>> Perform the CAN communication system inspection. Repair or replace the malfunctioning parts.

Refer to 

CCS-137, "DTC Logic"

NO

>> GO TO 2.

2.

CHECK BRAKE OPERATION

Check if the brake operates normally. 

Does it operate normally?

YES

>> GO TO 4.

NO

>> GO TO 3.

3.

BRAKE LINE INSPECTION

1.

Check the brake system, and then repair malfunctioning parts. 

2.

Erases All self-diagnosis results. 

3.

Perform “BOOSTER SOL/V” on “Active Test” of “ICC”. 

Does it operate normally?

YES

>> INSPECTION END

NO

>> GO TO 4.

4.

CHECK BOOSTER SOLENOID

Check the booster solenoid. Refer to 

CCS-78, "Component Inspection"

DTC

(On board dis-

play)

Trouble diagnosis name

DTC detecting condition

Possible causes

C1A11

(11)

PRESSURE CONTROL

If the brake booster is malfunctioning

Brake booster

CCS-78

< DTC/CIRCUIT DIAGNOSIS >

[ICC (FULL SPEED RANGE)]

C1A11 PRESSURE CONTROL

Is the inspection result normal?

YES

>> GO TO 5.

NO

>> Replace the brake booster. 

5.

CHECK HARNESS BETWEEN BRAKE BOOSTER (BOOSTER SOLENOID) AND BRAKE BOOSTER

CONTROL UNIT

1.

Turn the ignition switch OFF.

2.

Disconnect connectors of brake booster control unit and brake booster. 

3.

Check for continuity between the brake booster control unit harness connector and brake booster harness
connector. 

4.

Check for continuity between brake booster control unit harness connector and ground. 

Is the inspection result normal?

YES

>> Replace the brake booster control unit. 

NO

>> Repair the harnesses or connectors.

Component Inspection

INFOID:0000000005501617

1.

CHECK BRAKE BOOSTER (BOOSTER SOLENOID)

Check resistance between brake booster (booster solenoid) termi-
nals. 

Is the inspection result normal?

YES

>> INSPECTION END

NO

>> Replace the brake booster. 

Special Repair Requirement

INFOID:0000000005501618

DESCRIPTION

Perform the action test after adjusting the laser beam aiming of ICC sensor integrated unit when the following
operation is performed. 
• Removal and installation of ICC sensor integrated unit
• Replacement of ICC sensor integrated unit

SPECIAL REPAIR REQUIREMENT

1.

LASER BEAM AIMING ADJUSTMENT OF ICC SENSOR INTEGRATED UNIT

Adjust the laser beam aiming of the ICC sensor integrated unit. Refer to 

CCS-13, "LASER BEAM AIMING

ADJUSTMENT : Description"

>> GO TO 2.

Brake booster control unit

Brake booster

Continuity

Connector

Terminal

Connector

Terminal

B250

10

E44

4

Existed

12

6

Brake booster control unit

Ground

Continuity

Connector

Terminal

B250

10

Not existed

12

Brake booster

Resistance

Terminal

4

6

Approx. 1.4 

JPOIA0160GB

CCS

C1A11 PRESSURE CONTROL

CCS-79

< DTC/CIRCUIT DIAGNOSIS >

[ICC (FULL SPEED RANGE)]

C

D

E

F

G

H

I

J

K

L

M

B

N

P

A

2.

CHECK ICC SYSTEM

1.

Erase the “Self Diagnostic Result”, and then perform “All DTC Reading” again after performing the action
test. (Refer to 

CCS-18, "ACTION TEST : Description"

 for action test.)

2.

Check that the ICC system is normal. 

>> WORK END

 

 

 

 

 

 

 

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