Infiniti QX56 (Z62). Manual - part 333

 

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Infiniti QX56 (Z62). Manual - part 333

 

 

DAS

U0401 ECM CAN 1

DAS-369

< DTC/CIRCUIT DIAGNOSIS >

[LDW & LDP]

C

D

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F

G

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B

N

P

A

U0401 ECM CAN 1

DTC Logic

INFOID:0000000006228204

DTC DETECTION LOGIC

NOTE:
If DTC “U0401” is detected along with DTC “U1000”, first diagnose the DTC “U1000”. Refer to 

DAS-374,

"ADAS CONTROL UNIT : DTC Logic"

DTC CONFIRMATION PROCEDURE

1.

PERFORM DTC CONFIRMATION PROCEDURE

1.

Start the engine.

2.

Turn the LDP system ON. 

3.

Perform “All DTC Reading” with CONSULT-III. 

4.

Check if the “U0401” is detected as the current malfunction in “Self Diagnostic Result” of “ICC/ADAS”. 

Is “U0401” detected as the current malfunction?

YES

>> Refer to 

DAS-369, "Diagnosis Procedure"

.

NO

>> Refer to 

GI-40, "Intermittent Incident"

Diagnosis Procedure

INFOID:0000000006228205

1.

CHECK SELF-DIAGNOSIS RESULTS

Check if “U1000” is detected other than “U0401” 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 

DAS-374, "ADAS CONTROL UNIT : DTC Logic"

NO

>> GO TO 2.

2.

CHECK ECM SELF-DIAGNOSIS RESULTS

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

Is any DTC detected?

YES

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

EC-98, "DTC Index"

.

NO

>> Replace the ADAS control unit. Refer to 

DAS-63, "Removal and Installation"

DTC

(On board 

display)

Trouble diagnosis name

DTC detecting condition

Possible causes

U0401

(120)

ECM CAN CIR1

If ADAS control unit detects an error signal 
that is received from ECM via CAN communi-
cation

ECM

DAS-370

< DTC/CIRCUIT DIAGNOSIS >

[LDW & LDP]

U0402 TCM CAN 1

U0402 TCM CAN 1

DTC Logic

INFOID:0000000006228206

DTC DETECTION LOGIC

NOTE:
If DTC “U0402” is detected along with DTC “U1000”, first diagnose the DTC “U1000”. Refer to 

DAS-374,

"ADAS CONTROL UNIT : DTC Logic"

DTC CONFIRMATION PROCEDURE

1.

PERFORM DTC CONFIRMATION PROCEDURE

1.

Start the engine.

2.

Turn the LDP system ON. 

3.

Perform “All DTC Reading” with CONSULT-III. 

4.

Check if the “U0402” is detected as the current malfunction in “Self Diagnostic Result” of “ICC/ADAS”. 

Is “U0402” detected as the current malfunction?

YES

>> Refer to 

DAS-370, "Diagnosis Procedure"

.

NO

>> Refer to 

GI-40, "Intermittent Incident"

Diagnosis Procedure

INFOID:0000000006228207

1.

CHECK SELF-DIAGNOSIS RESULTS

Check if “U1000” is detected other than “U0402” 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 

DAS-374, "ADAS CONTROL UNIT : DTC Logic"

NO

>> GO TO 2.

2.

CHECK TCM SELF-DIAGNOSIS RESULTS

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

Is any DTC detected?

YES

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

TM-78, "DTC Index"

NO

>> Replace the ADAS control unit. Refer to 

DAS-63, "Removal and Installation"

DTC

(On board dis-

play)

Trouble diagnosis 

name

DTC detecting condition

Possible causes

U0402

(122)

TCM CAN CIRC1

If ADAS control unit detects an error signal 
that is received from TCM via CAN communi-
cation

TCM

DAS

U0405 ADAS CAN 2

DAS-371

< DTC/CIRCUIT DIAGNOSIS >

[LDW & LDP]

C

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U0405 ADAS CAN 2

DTC Logic

INFOID:0000000006223785

DTC DETECTION LOGIC

NOTE:
If DTC “U0405” is detected along with DTC “U1000”, first diagnose the DTC “U1000”. Refer to 

DAS-374,

"ADAS CONTROL UNIT : DTC Logic"

DTC CONFIRMATION PROCEDURE

1.

PERFORM DTC CONFIRMATION PROCEDURE

1.

Start the engine.

2.

Turn the LDP system ON. 

3.

Perform “All DTC Reading” with CONSULT-III. 

4.

Check if the “U0405” is detected as the current malfunction in “Self Diagnostic Result” of “LANE CAM-
ERA”. 

Is “U0405” detected as the current malfunction?

YES

>> Refer to 

DAS-371, "Diagnosis Procedure"

.

NO

>> Refer to 

GI-40, "Intermittent Incident"

Diagnosis Procedure

INFOID:0000000006223786

1.

CHECK LANE CAMERA UNIT SELF-DIAGNOSIS RESULTS

Check if “U1000” is detected other than “U0405” in “Self Diagnostic Result” of “LANE CAMERA”. 

Is “U1000” detected?

YES

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

Refer to 

DAS-374, "LANE CAMERA UNIT : 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

DAS-310, "DTC Index"

NO

>> Replace the lane camera unit. Refer to 

DAS-403, "Removal and Installation"

DTC

Trouble diagnosis name

DTC detecting condition

Possible causes

U0405

ADAS CAN CIR 2

If lane camera unit detects an error signal that 
is received from ADAS control unit via ITS 
communication

ADAS control unit

DAS-372

< DTC/CIRCUIT DIAGNOSIS >

[LDW & LDP]

U0415 VDC CAN 1

U0415 VDC CAN 1

DTC Logic

INFOID:0000000006228208

DTC DETECTION LOGIC

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

DAS-374,

"ADAS CONTROL UNIT : DTC Logic"

DTC CONFIRMATION PROCEDURE

1.

PERFORM DTC CONFIRMATION PROCEDURE

1.

Start the engine.

2.

Turn the LDP system ON. 

3.

Perform “All DTC Reading” with CONSULT-III. 

4.

Check if the “U0415” is detected as the current malfunction in “Self Diagnostic Result” of “ICC/ADAS”. 

Is “U0415” detected as the current malfunction?

YES

>> Refer to 

DAS-372, "Diagnosis Procedure"

.

NO

>> Refer to 

GI-40, "Intermittent Incident"

.

Diagnosis Procedure

INFOID:0000000006228209

1.

CHECK SELF-DIAGNOSIS RESULTS

Check if “U1000” is detected other than “U0415” 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 

DAS-374, "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"

DTC

(On board dis-

play)

Trouble diagnosis name

DTC detecting condition

Possible causes

U0415

(126)

VDC CAN CIR1

If ADAS control unit detects an error signal 
that is received from ABS actuator and electric 
unit (control unit) via CAN communication

ABS actuator and electric unit (control 
unit)

 

 

 

 

 

 

 

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