Nissan Titan A60. Manual - part 864

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< SYMPTOM DIAGNOSIS >

SONAR SYSTEM SYMPTOMS

SYMPTOM DIAGNOSIS

SONAR SYSTEM SYMPTOMS

Symptom Table

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NOTE:

Always perform Preliminary Check and Self-Diagnosis Function before diagnosing vehicle by symptom.  Refer

to 

SN-4, "Preliminary Check"

 and 

SN-7, "Self-Diagnosis Function"

.

Symptom

Repair order

When the transmission gear selector lever is in the R position and 
the sonar system is ON, the rear sonar system does not operate.

1.

Check sonar control unit power and ground circuits. Refer to 

SN-9, "Diagnosis Procedure"

.

2.

Check transmission range switch. Refer to 

TM-50, "Diagno-

sis Procedure"

.

3.

Check back-up lamp relay.

4.

Check related harness and connections for back-up lamp re-
lay.

5.

Check rear sonar buzzer. Refer to 

SN-11, "Diagnosis Proce-

dure"

.

6.

Replace sonar control unit. Refer to 

SN-28, "Removal and 

Installation"

.

Sonar Control Unit will not enter Diagnostic Mode.

1.

Check sonar control unit power and ground circuits. Refer to 

SN-9, "Diagnosis Procedure"

.

2.

Check harness and connections for sonar system OFF 
switch.  Refer to 

SN-13, "Diagnosis Procedure"

.

3.

Replace sonar control unit. Refer to 

SN-28, "Removal and 

Installation"

.

Buzzer sounds although there are no obstacles within the detec-
tion range (false detection).

1.

Check all sonar sensors for misalignment or damage (in-
cluding bumper and fascia).  Refer to 

SN-4, "Preliminary 

Check"

.

2.

Check all sonar sensors for dirt or ice buildup.  Refer to 

SN-

4, "Preliminary Check"

.

3.

Check sonar sensors.  Refer to 

SN-10, "Diagnosis Proce-

dure"

.

4.

Replace sonar control unit. Refer to 

SN-28, "Removal and 

Installation"

.

When sonar system is ON, the sonar system OFF indicator lamp 
lights up and the sonar buzzer sounds intermittently (for about 4 
seconds).

1.

Check sonar sensors.  Refer to 

SN-4, "Preliminary Check"

.

2.

Check harnesses between sonar sensors and sonar control 
unit for an open condition.  Refer to 

SN-10, "Diagnosis Pro-

cedure"

.

3.

Replace sonar control unit. Refer to 

SN-28, "Removal and 

Installation"

.

The sonar system still operates when the sonar system OFF indi-
cator lamp is ON.

1.

Check sonar system OFF indicator lamp. Refer to 

SN-13, 

"Diagnosis Procedure"

.

2.

Replace sonar control unit. Refer to 

SN-28, "Removal and 

Installation"

.

The sonar sensors do not detect objects within the detectable 
range (intermittent operation).

1.

Check sonar sensors.  Refer to 

SN-4, "Preliminary Check"

.

2.

Replace sonar control unit. Refer to 

SN-28, "Removal and 

Installation"

.

When the sonar system is OFF, the OFF indicator does not light 
and the rear sonar buzzer does not sound.

1.

Check sonar system OFF switch. Refer to 

SN-13, "Compo-

nent Inspection"

.

2.

Check harness and connections for sonar system OFF 
switch.  Refer to 

SN-13, "Diagnosis Procedure"

.

3.

Replace sonar control unit. Refer to 

SN-28, "Removal and 

Installation"

.

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SONAR SYSTEM SYMPTOMS

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< SYMPTOM DIAGNOSIS >

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When the sonar system is OFF, the OFF indicator lamp does not 
light but the rear sonar buzzer does sound.

1.

Check sonar system OFF indicator lamp. Refer to 

SN-13, 

"Component Inspection"

.

2.

Check harness and connections for sonar system OFF indi-
cator lamp.  Refer to 

SN-13, "Diagnosis Procedure"

.

3.

Replace sonar control unit. Refer to 

SN-28, "Removal and 

Installation"

.

When the sonar system is OFF, the rear sonar buzzer does not 
sound but the OFF indicator lamp lights.

1.

Check sonar buzzer. Refer to 

SN-11, "Component Inspec-

tion"

.

2.

Check harness and connections between sonar buzzer and 
sonar control unit.  Refer to 

SN-11, "Diagnosis Procedure"

.

3.

Replace sonar control unit. Refer to 

SN-28, "Removal and 

Installation"

.

Symptom

Repair order

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< PRECAUTION >

PRECAUTION

PRECAUTION

PRECAUTION

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

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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 SR and SB section of this Service Man-

ual.

WARNING:

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

the event of a collision which 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 SR section.

• 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 Airbag Diagnosis Sensor Unit or other Airbag System sensors with the Igni-

tion 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.

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SONAR SENSOR

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< UNIT REMOVAL AND INSTALLATION >

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UNIT REMOVAL AND INSTALLATION

SONAR SENSOR

Removal and Installation

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REMOVAL

1. Disconnect the sonar sensor harness connector. 
2. Disconnect the sonar sensor retainers from the rear bumper. 
3. Remove the rear sonar sensor (1) from the rear bumper (2).
4. Remove the rear sonar sensor housing and harness from the

rear bumper (2).

INSTALLATION

Installation is in the reverse order of removal.

ALNIA1105GB