Infiniti QX56 (Z62). Manual - part 256

DAS

U150F AV CAN 3

DAS-61

< DTC/CIRCUIT DIAGNOSIS >

[ADAS CONTROL UNIT]

C

D

E

F

G

H

I

J

K

L

M

B

N

P

A

U150F AV CAN 3

DTC Logic

INFOID:0000000006228052

DTC DETECTION LOGIC

NOTE:
If DTC “U150F” is detected along with DTC “U1000”, first diagnose the DTC “U1000”. Refer to 

DAS-38, "DTC

Index"

. 

DTC CONFIRMATION PROCEDURE

1.

PERFORM DTC CONFIRMATION PROCEDURE

1.

Start the engine.

2.

Turn the DCA system or LDP system ON. 

3.

Perform “All DTC Reading” with CONSULT-III. 

4.

Check if the “U150F” is detected as the current malfunction in “Self Diagnostic Result” of “ICC/ADAS”. 

Is “U150F” detected as the current malfunction?

YES

>> Refer to 

DAS-61, "Diagnosis Procedure"

.

NO

>> Refer to 

GI-40, "Intermittent Incident"

. 

Diagnosis Procedure

INFOID:0000000006228053

1.

CHECK SELF-DIAGNOSIS RESULTS

Check if “U1000” is detected other than “U150F” 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-59, "DTC Logic"

. 

NO

>> GO TO 2.

2.

CHECK AV CONTROL UNIT SELF-DIAGNOSIS RESULTS

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

Is any DTC detected?

YES

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

AV-57, "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

U150F

(161)

AV CAN CIRC 3

ADAS control unit detects an error signal that is 
received from AV control unit via CAN commu-
nication

AV control unit

DAS-62

< DTC/CIRCUIT DIAGNOSIS >

[ADAS CONTROL UNIT]

POWER SUPPLY AND GROUND CIRCUIT

POWER SUPPLY AND GROUND CIRCUIT

Diagnosis Procedure

INFOID:0000000006223493

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. 

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

DAS

ADAS CONTROL UNIT

DAS-63

< REMOVAL AND INSTALLATION >

[ADAS CONTROL UNIT]

C

D

E

F

G

H

I

J

K

L

M

B

N

P

A

REMOVAL AND INSTALLATION

ADAS CONTROL UNIT

Removal and Installation

INFOID:0000000006223494

REMOVAL

1.

Remove the luggage side lower finisher (LH). Refer to 

INT-36, "LUGGAGE SIDE LOWER FINISHER :

Removal and Installation"

.

2.

Disconnect  ADAS control unit connector.

3.

Remove mounting bolts from ADAS control unit.

4.

Remove ADAS control unit.

REMOVAL

Install in the reverse order of removal.

DAS-64

< PRECAUTION >

[DCA]

PRECAUTIONS

PRECAUTION

PRECAUTIONS

Precaution for Supplemental Restraint System (SRS) "AIR BAG" and "SEAT BELT 
PRE-TENSIONER"

INFOID:0000000006223495

The Supplemental Restraint System such as “AIR BAG” and “SEAT BELT PRE-TENSIONER”, used along
with a front seat belt, helps to reduce the risk or severity of injury to the driver and front passenger for certain
types of collision. This system includes seat belt switch inputs and dual stage front air bag modules. The SRS
system uses the seat belt switches to determine the front air bag deployment, and may only deploy one front
air bag, depending on the severity of a collision and whether the front occupants are belted or unbelted.
Information necessary to service the system safely is included in the “SRS AIR BAG” and “SEAT BELT” of this
Service Manual.

WARNING:

• To avoid rendering the SRS inoperative, which could increase the risk of personal injury or death in

the event of a collision that would result in air bag inflation, all maintenance must be performed by
an authorized NISSAN/INFINITI dealer.

• Improper maintenance, including incorrect removal and installation of the SRS, can lead to personal

injury caused by unintentional activation of the system. For removal of Spiral Cable and Air Bag
Module, see the “SRS AIR BAG”.

• Do not use electrical test equipment on any circuit related to the SRS unless instructed to in this

Service Manual. SRS wiring harnesses can be identified by yellow and/or orange harnesses or har-
ness connectors.

PRECAUTIONS WHEN USING POWER TOOLS (AIR OR ELECTRIC) AND HAMMERS

WARNING:

• When working near the Air Bag Diagnosis Sensor Unit or other Air Bag System sensors with the

ignition ON or engine running, DO NOT use air or electric power tools or strike near the sensor(s)
with a hammer. Heavy vibration could activate the sensor(s) and deploy the air bag(s), possibly
causing serious injury.

• When using air or electric power tools or hammers, always switch the ignition OFF, disconnect the

battery, and wait at least 3 minutes before performing any service.

Precautions For Harness Repair

INFOID:0000000006223496

ITS communication uses a twisted pair line. Be careful when repairing it. 
• Solder the repaired area and wrap tape around the soldered area. 

NOTE:
A fray of twisted lines must be within 110 mm (4.33 in).

SKIB8766E