Nissan Frontier. Instruction — part 1151
SN
SONAR SYSTEM
SN-21
< WIRING DIAGRAM >
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ABNIA5565GB
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< SYMPTOM DIAGNOSIS >
SONAR SYSTEM SYMPTOMS
SYMPTOM DIAGNOSIS
SONAR SYSTEM SYMPTOMS
Symptom Table
INFOID:0000000009480116
NOTE:
Always perform Preliminary Check and Self-Diagnosis Function before diagnosing vehicle by symptom. Refer
to
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
.
2.
Check transmission range switch. Refer to
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
.
6.
Replace sonar control unit. Refer to
.
Sonar Control Unit will not enter Diagnostic Mode.
1.
Check sonar control unit power and ground circuits. Refer to
.
2.
Check harness and connections for sonar system OFF
switch. Refer to
3.
Replace sonar control unit. Refer to
.
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
2.
Check all sonar sensors for dirt or ice buildup. Refer to
3.
.
4.
Replace sonar control unit. Refer to
.
When sonar system is ON, the sonar system OFF indicator lamp
lights up and the sonar buzzer sounds intermittently (for about 4
seconds).
1.
2.
Check harnesses between sonar sensors and sonar control
unit for an open condition. Refer to
3.
Replace sonar control unit. Refer to
.
The sonar system still operates when the sonar system OFF indi-
cator lamp is ON.
1.
Check sonar system OFF indicator lamp. Refer to
.
2.
Replace sonar control unit. Refer to
.
The sonar sensors do not detect objects within the detectable
range (intermittent operation).
1.
2.
Replace sonar control unit. Refer to
.
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
2.
Check harness and connections for sonar system OFF
switch. Refer to
3.
Replace sonar control unit. Refer to
.
SN
SONAR SYSTEM SYMPTOMS
SN-23
< 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
.
2.
Check harness and connections for sonar system OFF indi-
cator lamp. Refer to
3.
Replace sonar control unit. Refer to
.
When the sonar system is OFF, the rear sonar buzzer does not
sound but the OFF indicator lamp lights.
1.
.
2.
Check harness and connections between sonar buzzer and
sonar control unit. Refer to
.
3.
Replace sonar control unit. Refer to
.
Symptom
Repair order
SN-24
< PRECAUTION >
PRECAUTION
PRECAUTION
PRECAUTION
Precaution for Supplemental Restraint System (SRS) "AIR BAG" and "SEAT BELT
PRE-TENSIONER"
INFOID:0000000010092073
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 Instruction. 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 three minutes before performing any service.
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