Infiniti QX56 (Z62). Manual - part 337

DAS

U1516 CAM CAN 3

DAS-385

< DTC/CIRCUIT DIAGNOSIS >

[LDW & LDP]

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U1516 CAM CAN 3

DTC Logic

INFOID:0000000006223819

DTC DETECTION LOGIC

NOTE:
If DTC “U1516” 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 “U1516” is detected as the current malfunction in “Self Diagnostic Result” of “ICC/ADAS”. 

Is “U1516” detected as the current malfunction?

YES

>> Refer to 

DAS-385, "Diagnosis Procedure"

.

NO

>> Refer to 

GI-40, "Intermittent Incident"

. 

Diagnosis Procedure

INFOID:0000000006223820

1.

CHECK SELF-DIAGNOSIS RESULTS

Check if “U1000” is detected other than “U1516” 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 LANE CAMERA UNIT SELF-DIAGNOSIS RESULTS

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

Is any DTC detected?

YES

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

DAS-316, "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

U1516

(166)

CAM CAN CIRC 3

ADAS control unit detects an error signal that is 
received from lane camera unit via ITS com-
munication

Lane camera unit

DAS-386

< DTC/CIRCUIT DIAGNOSIS >

[LDW & LDP]

U1520 4WD CAN 3

U1520 4WD CAN 3

DTC Logic

INFOID:0000000006228220

DTC DETECTION LOGIC

NOTE:
If DTC “U1520” 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 LDP system ON. 

3.

Perform “All DTC Reading” with CONSULT-III. 

4.

Check if the “U1520” is detected as the current malfunction in “Self Diagnostic Result” of “ICC/ADAS”. 

Is “U1520” detected as the current malfunction?

YES

>> Refer to 

DAS-386, "Diagnosis Procedure"

.

NO

>> Refer to 

GI-40, "Intermittent Incident"

. 

Diagnosis Procedure

INFOID:0000000006228221

1.

CHECK SELF-DIAGNOSIS RESULTS

Check if “U1000” is detected other than “U1520” 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 TRANSFER CONTROL UNIT SELF-DIAGNOSIS RESULTS

Check if any DTC is detected in “Self Diagnostic Result” of “ALL MODE AWD/4WD”. 

Is any DTC detected?

YES

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

DLN-29, "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

U1520

(176)

4WD CAN CIRC 3

ADAS control unit detects an error signal that is 
received from transfer control unit via CAN 
communication

Transfer control unit

DAS

POWER SUPPLY AND GROUND CIRCUIT

DAS-387

< DTC/CIRCUIT DIAGNOSIS >

[LDW & LDP]

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POWER SUPPLY AND GROUND CIRCUIT

ADAS CONTROL UNIT

ADAS CONTROL UNIT : Diagnosis Procedure

INFOID:0000000006223823

1.

CHECK ADAS CONTROL UNIT POWER SUPPLY CIRCUIT 

Check voltage between ADAS control unit harness connector and ground. 

Is the inspection result normal?

YES

>> GO TO 2.

NO

>> Repair the ADAS control unit power supply circuit. 

2.

CHECK ADAS CONTROL UNIT GROUND CIRCUIT

1.

Turn the ignition switch OFF.

2.

Disconnect the ADAS control unit connector. 

3.

Check for continuity between ADAS control unit harness connector and ground. 

Is the inspection result normal?

YES

>> INSPECTION END

NO

>> Repair the ADAS control unit ground circuit. 

LANE CAMERA UNIT

LANE CAMERA UNIT : Diagnosis Procedure

INFOID:0000000006223824

1.

CHECK LANE CAMERA UNIT POWER SUPPLY CIRCUIT 

Check voltage between lane camera unit harness connector and ground. 

Is the inspection result normal?

YES

>> GO TO 2.

NO

>> Repair the lane camera unit power supply circuit. 

2.

CHECK LANE CAMERA UNIT GROUND CIRCUIT

1.

Turn the ignition switch OFF.

2.

Disconnect the lane camera unit connector. 

Terminal

Condition

Voltage

(Approx.)

(+)

(–)

ADAS control unit

Ground

Ignition 

switch

Connector

Terminal

B61

16

OFF

0 V

ON

Battery volt-

age

ADAS control unit

Ground

Continuity

Connector

Terminal

B61

6

Existed

Terminal

Condition

Voltage

(Approx.)

(+)

(–)

Lane camera unit

Ground

Ignition 

switch

Connector

Terminal

R8

7

OFF

0 V

ON

Battery volt-

age

DAS-388

< DTC/CIRCUIT DIAGNOSIS >

[LDW & LDP]

POWER SUPPLY AND GROUND CIRCUIT

3.

Check for continuity between lane camera unit harness connector and ground. 

Is the inspection result normal?

YES

>> INSPECTION END

NO

>> Repair the lane camera unit ground circuit.

Lane camera unit

Ground

Continuity

Connector

Terminal

R8

1

Existed

5