Infiniti QX56 (Z62). Manual - part 368

DAS

U1514 STRG SEN CAN 3

DAS-509

< DTC/CIRCUIT DIAGNOSIS >

[BSW]

C

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U1514 STRG SEN CAN 3

DTC Logic

INFOID:0000000006228288

DTC DETECTION LOGIC

NOTE:
If DTC “U1514” is detected along with DTC “U1000”, first diagnose the DTC “U1000”. Refer to 

DAS-486,

"ADAS CONTROL UNIT : DTC Logic"

. 

DTC CONFIRMATION PROCEDURE

1.

PERFORM DTC CONFIRMATION PROCEDURE

1.

Start the engine.

2.

Turn the BSW system ON. 

3.

Perform “All DTC Reading” with CONSULT-III. 

4.

Check if the “U1514” is detected as the current malfunction in “Self Diagnostic Result” of “ICC/ADAS”. 

Is “U1514” detected as the current malfunction?

YES

>> Refer to 

DAS-509, "Diagnosis Procedure"

.

NO

>> Refer to 

GI-40, "Intermittent Incident"

. 

Diagnosis Procedure

INFOID:0000000006228289

1.

CHECK SELF-DIAGNOSIS RESULTS

Check if “U1000” is detected other than “U1514” 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-486, "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

U1514

(165)

STRG SEN CAN CIRC 3

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

Steering angle sensor

DAS-510

< DTC/CIRCUIT DIAGNOSIS >

[BSW]

U1518 SIDE RDR L CAN 3

U1518 SIDE RDR L CAN 3

DTC Logic

INFOID:0000000006223955

DTC DETECTION LOGIC

NOTE:
If DTC “U1518” is detected along with DTC “U1000”, or “U1508”, first diagnose the DTC “U1000” or “U1508”. 
• Refer to 

DAS-486, "ADAS CONTROL UNIT : DTC Logic"

 for DTC “U1000”. 

• Refer to 

DAS-507, "DTC Logic"

 for DTC “U1508”.

DTC CONFIRMATION PROCEDURE

1.

PERFORM DTC CONFIRMATION PROCEDURE

1.

Start the engine.

2.

Turn the BSW system ON. 

3.

Perform “All DTC Reading” with CONSULT-III. 

4.

Check if the “U1518” is detected as the current malfunction in “Self Diagnostic Result” of “ICC/ADAS”. 

Is “U1518” detected as the current malfunction?

YES

>> Refer to 

DAS-510, "Diagnosis Procedure"

.

NO

>> Refer to 

GI-40, "Intermittent Incident"

. 

Diagnosis Procedure

INFOID:0000000006223956

1.

CHECK SELF-DIAGNOSIS RESULTS

Check if “U1000” or “U1508” is detected other than “U1518” in “Self Diagnostic Result” of “ICC/ADAS”. 

Is “U1000” or “U1508” detected?

YES-1 >> U1000 detected: Perform the CAN communication system inspection. Repair or replace the mal-

functioning parts. Refer to 

DAS-486, "ADAS CONTROL UNIT : DTC Logic"

.

YES-2 >> U1508 detected: Refer to 

DAS-507, "DTC Logic"

.

NO

>> GO TO 2.

2.

CHECK SIDE RADAR LH SELF-DIAGNOSIS RESULTS

Check if any DTC is detected in “Self Diagnostic Result” of “SIDE RADAR LEFT”. 
Is any DTC detected?

YES

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

DAS-445, "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

U1518

(168)

SIDE RDR L CAN CIRC 3

ADAS control unit detects an error signal that is re-
ceived from side radar LH via ITS communication

Side radar LH

DAS

U1519 SIDE RDR R CAN 3

DAS-511

< DTC/CIRCUIT DIAGNOSIS >

[BSW]

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U1519 SIDE RDR R CAN 3

DTC Logic

INFOID:0000000006223957

DTC DETECTION LOGIC

NOTE:
If DTC “U1519” is detected along with DTC “U1000”, or “U1507”, first diagnose the DTC “U1000” or “U1507”. 
• Refer to 

DAS-486, "ADAS CONTROL UNIT : DTC Logic"

 for DTC “U1000”. 

• Refer to 

DAS-506, "DTC Logic"

 for DTC “U1507”.

DTC CONFIRMATION PROCEDURE

1.

PERFORM DTC CONFIRMATION PROCEDURE

1.

Start the engine.

2.

Turn the BSW system ON. 

3.

Perform “All DTC Reading” with CONSULT-III. 

4.

Check if the “U1519” is detected as the current malfunction in “Self Diagnostic Result” of “ICC/ADAS”. 

Is “U1519” detected as the current malfunction?

YES

>> Refer to 

DAS-511, "Diagnosis Procedure"

.

NO

>> Refer to 

GI-40, "Intermittent Incident"

. 

Diagnosis Procedure

INFOID:0000000006223958

1.

CHECK SELF-DIAGNOSIS RESULTS

Check if “U1000” or “U1507” is detected other than “U1519” in “Self Diagnostic Result” of “ICC/ADAS”. 

Is “U1000” or “U1507” detected?

YES-1 >> U1000 detected: Perform the CAN communication system inspection. Repair or replace the mal-

functioning parts. Refer to 

DAS-486, "ADAS CONTROL UNIT : DTC Logic"

.

YES-2 >> U1507 detected: Refer to 

DAS-506, "DTC Logic"

.

NO

>> GO TO 2.

2.

CHECK SIDE RADAR RH SELF-DIAGNOSIS RESULTS

Check if any DTC is detected in “Self Diagnostic Result” of “SIDE RADAR RIGHT”. 
Is any DTC detected?

YES

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

DAS-447, "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

U1519

(169)

SIDE RDR R CAN CIRC 3

ADAS control unit detects an error signal that is re-
ceived from side radar RH via ITS communication

Side radar RH

DAS-512

< DTC/CIRCUIT DIAGNOSIS >

[BSW]

POWER SUPPLY AND GROUND CIRCUIT

POWER SUPPLY AND GROUND CIRCUIT

ADAS CONTROL UNIT

ADAS CONTROL UNIT : Diagnosis Procedure

INFOID:0000000006223967

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. 

SIDE RADAR LH

SIDE RADAR LH : Diagnosis Procedure

INFOID:0000000006223968

1.

CHECK POWER SUPPLY CIRCUIT

1.

Turn ignition switch OFF.

2.

Disconnect the side radar LH connector.

3.

Check voltage between side radar LH harness connector and ground.

Is the inspection result normal?

YES

>> GO TO 2.

NO

>> Repair the side radar LH power supply circuit.

2.

CHECK GROUND CIRCUIT

Check continuity between side radar LH harness connectors and ground.

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

Terminals

Condition

Voltage

(Approx.)

(+)

(

−

)

Side radar LH

Ground

Ignition switch

Connector

Terminal

B74

5

OFF

0 V

ON

Battery voltage