Infiniti QX56 (Z62). Manual - part 219

CCS

U0428 STRG SEN CAN 2

CCS-143

< DTC/CIRCUIT DIAGNOSIS >

[ICC]

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U0428 STRG SEN CAN 2

ADAS CONTROL UNIT

ADAS CONTROL UNIT : DTC Logic

INFOID:0000000006224402

DTC DETECTION LOGIC

NOTE:
If DTC “U0428” is detected along with DTC “U1000”, first diagnose the DTC “U1000”. Refer to 

CCS-145,

"ADAS CONTROL UNIT : DTC Logic"

. 

DTC CONFIRMATION PROCEDURE

1.

PERFORM DTC CONFIRMATION PROCEDURE

1.

Start the engine.

2.

Turn the MAIN switch of ICC system ON. 

3.

Perform “All DTC Reading” with CONSULT-III. 

4.

Check if the “U0428” is detected as the current malfunction in “Self Diagnostic Result” of “ICC/ADAS”. 

Is “U0428” detected as the current malfunction?

YES

>> Refer to 

CCS-143, "ADAS CONTROL UNIT : Diagnosis Procedure"

.

NO

>> Refer to 

GI-40, "Intermittent Incident"

. 

ADAS CONTROL UNIT : Diagnosis Procedure

INFOID:0000000006224403

1.

CHECK SELF-DIAGNOSIS RESULTS

Check if “U1000” is detected other than “U0428” in “Self Diagnostic Result” of “ICC/ADAS”. 

Is “U1000” detected?

YES

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

Refer to 

CCS-145, "ADAS CONTROL UNIT : DTC Logic"

. 

NO

>> GO TO 2.

2.

CHECK ABS ACTUATOR AND ELECTRIC UNIT (CONTROL UNIT) SELF-DIAGNOSIS RESULTS

Check if any DTC is detected in “Self Diagnostic Result” of “ABS”. 

Is any DTC detected?

YES

>> Perform diagnosis on the detected DTC and repair or replace the malfunctioning parts. Refer to

BRC-51, "DTC Index"

. 

NO

>> Replace the ADAS control unit. Refer to 

DAS-63, "Removal and Installation"

. 

ICC SENSOR

ICC SENSOR : DTC Logic

INFOID:0000000006224404

DTC DETECTION LOGIC

NOTE:
If DTC “U0428” is detected along with DTC “U1000”, first diagnose the DTC “U1000”. Refer to 

CCS-145, "ICC

SENSOR : DTC Logic"

. 

DTC

(On board dis-

play)

Trouble diagnosis name

DTC detecting condition

Possible causes

U0428

(131)

STRG SEN CAN CIR2

If ADAS control unit detects an error signal 
that is received from steering angle sensor via 
CAN communication

Steering angle sensor

DTC

Trouble diagnosis name

DTC detecting condition

Possible causes

U0428

STRG SEN CAN CIR2

If ICC sensor detects an error signal that is re-
ceived from steering angle sensor via ADAS 
control unit

Steering angle sensor

CCS-144

< DTC/CIRCUIT DIAGNOSIS >

[ICC]

U0428 STRG SEN CAN 2

DTC CONFIRMATION PROCEDURE

1.

PERFORM DTC CONFIRMATION PROCEDURE

1.

Start the engine.

2.

Turn the MAIN switch of ICC system ON. 

3.

Perform “All DTC Reading” with CONSULT-III. 

4.

Check if the “U0428” is detected as the current malfunction in “Self Diagnostic Result” of “LASER”. 

Is “U0428” detected as the current malfunction?

YES

>> Refer to 

CCS-143, "ADAS CONTROL UNIT : Diagnosis Procedure"

.

NO

>> Refer to 

GI-40, "Intermittent Incident"

. 

ICC SENSOR : Diagnosis Procedure

INFOID:0000000006224405

1.

CHECK ICC SENSOR SELF-DIAGNOSIS RESULTS

Check if “U1000” is detected other than “U0428” in “Self Diagnostic Result” of “LASER”. 

Is “U1000” detected?

YES

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

Refer to 

CCS-145, "ICC SENSOR : DTC Logic"

. 

NO

>> GO TO 2.

2.

CHECK ADAS CONTROL UNIT SELF-DIAGNOSIS RESULTS

Check if any DTC is detected in “Self Diagnostic Result” of “ICC/ADAS”. 

Is any DTC detected?

YES

>> Perform diagnosis on the detected DTC and repair or replace the malfunctioning parts. Refer to

CCS-50, "DTC Index"

. 

NO

>> Replace the ICC sensor. Refer to 

CCS-176, "Exploded View"

. 

CCS

U1000 CAN COMM CIRCUIT

CCS-145

< DTC/CIRCUIT DIAGNOSIS >

[ICC]

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U1000 CAN COMM CIRCUIT

ADAS CONTROL UNIT

ADAS CONTROL UNIT : Description

INFOID:0000000006227995

CAN COMMUNICATION

CAN (Controller Area Network) is a serial communication line for real time applications. It is an on-vehicle mul-
tiplex communication line with high data communication speed and excellent error detection ability. Modern
vehicle is equipped with many electronic control units, and each control unit shares information and links with
other control units during operation (not independent). In CAN communication, control units are connected
with 2 communication lines (CAN-H, CAN-L) allowing a high rate of information transmission with less wiring.
Each control unit transmits/receives data but selectively reads the required data only.
CAN communication signal chart. Refer to 

LAN-28, "CAN COMMUNICATION SYSTEM : CAN Communica-

tion Signal Chart"

.

ITS COMMUNICATION

• ITS communication is a multiplex communication system. This enables the system to transmit and receive

large quantities of data at high speed by connecting control units with 2 communication lines.

• ITS communication lines adopt twisted-pair line style (two lines twisted) for noise immunity.

ADAS CONTROL UNIT : DTC Logic

INFOID:0000000006227996

DTC DETECTION LOGIC

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

ADAS CONTROL UNIT : Diagnosis Procedure

INFOID:0000000006227997

1.

PERFORM THE SELF-DIAGNOSIS

1.

Turn the ignition switch ON.

2.

Turn the MAIN switch of ICC system ON, and then wait for 30 seconds or more. 

3.

Perform “All DTC Reading” with CONSULT-III. 

4.

Check if the “U1000” is detected as the current malfunction in “Self Diagnostic Result” of “ICC/ADAS”. 

Is “U1000” detected as the current malfunction?

YES

>> Refer to 

LAN-18, "Trouble Diagnosis Flow Chart"

. 

NO

>> Refer to 

GI-40, "Intermittent Incident"

. 

ICC SENSOR

ICC SENSOR : Description

INFOID:0000000006224409

ITS COMMUNICATION

• ITS communication is a multiplex communication system. This enables the system to transmit and receive

large quantities of data at high speed by connecting control units with 2 communication lines

• ITS communication lines adopt twisted-pair line style (two lines twisted) for noise immunity.

ICC SENSOR : DTC Logic

INFOID:0000000006224410

DTC DETECTION LOGIC

DTC

(On board 

display)

Trouble diagnosis name

DTC detecting condition

Possible causes

U1000

(100)

CAN COMM CIRCUIT

If ADAS control unit is not transmitting or receiv-
ing CAN communication signal or ITS communi-
cation signal for 2 seconds or more

• CAN communication system
• ITS communication system

CCS-146

< DTC/CIRCUIT DIAGNOSIS >

[ICC]

U1000 CAN COMM CIRCUIT

ICC SENSOR : Diagnosis Procedure

INFOID:0000000006224411

1.

PERFORM THE SELF-DIAGNOSIS

1.

Turn the ignition switch ON.

2.

Turn the MAIN switch of ICC system ON, and then wait for 2 seconds or more. 

3.

Perform “All DTC Reading” with CONSULT-III. 

4.

Check if the “U1000” is detected as the current malfunction in “Self Diagnostic Result” of “LASER”. 

Is “U1000” detected as the current malfunction?

YES

>> Refer to 

LAN-18, "Trouble Diagnosis Flow Chart"

. 

NO

>> Refer to 

GI-40, "Intermittent Incident"

. 

DTC

Trouble diagnosis name

DTC detecting condition

Possible causes

U1000

CAN COMM CIRCUIT

If ICC sensor is not transmitting or receiving ITS 
communication signal for 2 seconds or more

ITS communication system