Infiniti EX35. Manual - part 382

CCS

C1A27 ECD POWER SUPPLY CIRCUIT

CCS-63

< COMPONENT DIAGNOSIS >

[INTELLIGENT CRUISE CONTROL]

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C1A27 ECD POWER SUPPLY CIRCUIT

Description

INFOID:0000000003130085

ECD (ELECTRONICALLY CONTROLLED DECELERATION)
• Receives deceleration degree commandment value signal from ICC sensor integrated unit, and controls

brake fluid pressure with the motor [built in ABS actuator and electric unit (control unit)].

• ECD control-related signals are transmitted by ABS actuator and electric unit (control unit) to ICC sensor

integrated unit with CAN communication. 

DTC Logic

INFOID:0000000003130086

DTC DETECTION LOGIC

NOTE:
If DTC “C1A27” is detected along with DTC “U1000”, “U0415” or “U0121” first diagnose the DTC “U1000”,
“U0415” or “U0121”.
• DTC “U1000”: Refer to 

CCS-75, "Diagnosis Procedure"

.

• DTC “U0415”: Refer to 

CCS-73, "Diagnosis Procedure"

.

• DTC “U0121”: Refer to 

CCS-67, "Diagnosis Procedure"

.

Diagnosis Procedure

INFOID:0000000003130087

1.

PERFORM SELF-DIAGNOSIS OF ICC SENSOR INTEGRATED UNIT

1.

Perform self-diagnosis of ICC sensor integrated unit.

2.

Check if DTC “U1000: CAN COMM CIRCUIT” (DTC 100) or “U0415: VDC CAN CIR 1” (DTC 126),
“U0121: VDC CAN CIR 2” (DTC 127) other than “C1A27: ECD PWR SUPLY CIR” (DTC 27) is detected.

Is any DTC detected?

YES

>> GO TO 2.

NO

>> GO TO 3.

2.

DIAGNOSIS FOR DETECTED DTC

Perform diagnosis on the detected DTC and repair or replace the applicable item. Refer to 

CCS-85, "DTC

Index"

.

>> GO TO 6.

3.

CHECK POWER SUPPLY CIRCUIT OF ABS ACTUATOR AND ELECTRIC UNIT (CONTROL UNIT)

Check power supply circuit of ABS actuator and electric unit (control unit). Refer to 

BRC-41, "Diagnosis Proce-

dure"

.

Is the inspection result normal?

YES

>> GO TO 5.

NO

>> GO TO 4.

4.

REPAIR OR REPLACE ABS ACTUATOR AND ELECTRIC UNIT (CONTROL UNIT) POWER SUPPLY

Repair or replace ABS actuator and electric unit (control unit) power supply.

>> GO TO 6.

5.

PERFORM SELF-DIAGNOSIS OF ABS ACTUATOR AND ELECTRIC UNIT (CONTROL UNIT)

1.

Perform self-diagnosis of ABS actuator and electric unit (control unit).

DTC No.

(On board 

display)

Trouble diagnosis name

DTC detecting condition

Possible cause

C1A27

(27)

ECD PWR SUPLY CIR

ECD system power supply voltage is excessively 
low.

• ABS actuator and electric unit (con-

trol unit) power supply circuit

• ABS actuator and electric unit (con-

trol unit)

CCS-64

< COMPONENT DIAGNOSIS >

[INTELLIGENT CRUISE CONTROL]

C1A27 ECD POWER SUPPLY CIRCUIT

2.

Repair or replace applicable item. Refer to 

BRC-95, "DTC No. Index"

.

>> GO TO 6.

6.

CHECK ICC SYSTEM

1.

Erase DTC and perform ICC system action test. Then perform self-diagnosis of ICC sensor integrated
unit. (For the details on the ICC system action test, refer to 

CCS-13, "ACTION TEST : Special Repair

Requirement (Vehicle-To-Vehicle Distance Control Mode)"

).

2.

Check that no abnormal condition is present in the ICC system. 

>> INSPECTION END

CCS

C1A33 CAN TRANSMISSION ERROR

CCS-65

< COMPONENT DIAGNOSIS >

[INTELLIGENT CRUISE CONTROL]

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C1A33 CAN TRANSMISSION ERROR

Description

INFOID:0000000003130088

ICC sensor integrated unit transmits a signal required by ICC system to ECM with CAN communication.

DTC Logic

INFOID:0000000003130089

DTC DETECTION LOGIC

NOTE:
If DTC “C1A33” is detected along with DTC “U1000”, first diagnose the DTC “U1000”. Refer to 

CCS-75,

"Diagnosis Procedure"

.

Diagnosis Procedure

INFOID:0000000003130090

1.

PERFORM SELF-DIAGNOSIS OF ICC SENSOR INTEGRATED UNIT

1.

Perform self-diagnosis of ICC sensor integrated unit.

2.

Check if DTC “U1000: CAN COMM CIRCUIT” (DTC 100) other than “C1A33: CAN TRANSMISSION
ERROR” (DTC 33) is detected.

Is any DTC detected?

YES

>> GO TO 2.

NO

>> GO TO 3.

2.

CAN COMMUNICATION INSPECTION

Perform the CAN communication system inspection. Repair or replace the applicable item. Refer to 

CCS-75,

"Diagnosis Procedure"

.

>> GO TO 4.

3.

REPLACE ICC SENSOR INTEGRATED UNIT

1.

Replace ICC sensor integrated unit.

2.

Adjust laser beam aiming. Refer to 

CCS-8, "LASER BEAM AIMING ADJUSTMENT : Special Repair

Requirement (Preparation)"

.

>> GO TO 4.

4.

CHECK ICC SYSTEM

1.

Erase DTC and perform ICC system action test. Then perform self-diagnosis of ICC sensor integrated
unit. (For the details on the ICC system action test, refer to 

CCS-13, "ACTION TEST : Special Repair

Requirement (Vehicle-To-Vehicle Distance Control Mode)"

).

2.

Check that no abnormal condition is present in the ICC system. 

>> INSPECTION END

DTC No.

(On board 

display)

Trouble diagnosis name

DTC detecting condition

Possible cause

C1A33

(33)

CAN TRANSMISSION ERROR

If an error occurs in CAN communication signal 
that ICC sensor integrated unit transmits to ECM

ICC sensor integrated unit

CCS-66

< COMPONENT DIAGNOSIS >

[INTELLIGENT CRUISE CONTROL]

C1A34 COMMAND ERROR

C1A34 COMMAND ERROR

Description

INFOID:0000000003130091

ICC sensor integrated unit sends command signal required for ECM control with CAN communication.

DTC Logic

INFOID:0000000003130092

DTC DETECTION LOGIC

NOTE:
If DTC “C1A34” is detected along with DTC “U1000”, first diagnose the DTC “U1000”. Refer to 

CCS-75,

"Diagnosis Procedure"

.

Diagnosis Procedure

INFOID:0000000003130093

1.

PERFORM SELF-DIAGNOSIS OF ICC SENSOR INTEGRATED UNIT

1.

Perform self-diagnosis of ICC sensor integrated unit.

2.

Check if DTC “U1000: CAN COMM CIRCUIT” (DTC 100) other than “C1A34: COMMAND ERROR” (DTC
34) is detected.

Is any DTC detected?

YES

>> GO TO 2.

NO

>> GO TO 3.

2.

CAN COMMUNICATION INSPECTION

Perform the CAN communication system inspection. Repair or replace the applicable item. Refer to 

CCS-75,

"Diagnosis Procedure"

.

>> GO TO 4.

3.

REPLACE ICC SENSOR INTEGRATED UNIT

1.

Replace ICC sensor integrated unit.

2.

Adjust laser beam aiming. Refer to 

CCS-8, "LASER BEAM AIMING ADJUSTMENT : Special Repair

Requirement (Preparation)"

.

>> GO TO 4.

4.

CHECK ICC SYSTEM

1.

Erase DTC and perform ICC system action test. Then perform self-diagnosis of ICC sensor integrated
unit. (For the details on the ICC system action test, refer to 

CCS-13, "ACTION TEST : Special Repair

Requirement (Vehicle-To-Vehicle Distance Control Mode)"

).

2.

Check that no abnormal condition is present in the ICC system. 

>> INSPECTION END

DTC No.

(On board 

display)

Trouble diagnosis name

DTC detecting condition

Possible cause

C1A34

(34)

COMMAND ERROR

If an error occurs in the command signal that ICC 
sensor integrated unit transmits to ECM with CAN 
communication

ICC sensor integrated unit