2009 INFINITI QX56 Factory Service Manual

Page 3433 of 4171

INFINITI QX56 2009  Factory Service Manual SN
FRONT AND REAR SONAR SYSTEMSN-11
< FUNCTION DIAGNOSIS >
C
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G H
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M B A
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sonar sensors measure the time from the transmitted si gnal to the time the signal is reflected back and send
th

Page 3434 of 4171

INFINITI QX56 2009  Factory Service Manual SN-12
< FUNCTION DIAGNOSIS >
FRONT AND REAR SONAR SYSTEM
Component Description
INFOID:0000000003776747
CONSULT-III Function (SONAR)INFOID:0000000003776748
SELF DIAGNOSTIC PROCEDURE
CONSULT-III can be

Page 3435 of 4171

INFINITI QX56 2009  Factory Service Manual SN
POWER SUPPLY AND GROUND CIRCUITSN-13
< COMPONENT DIAGNOSIS >
C
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M B A
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COMPONENT DIAGNOSIS
POWER SUPPLY AND GROUND CIRCUIT
Diagnosis Procedure (With Rear Sonar System)INFOID:0000

Page 3436 of 4171

INFINITI QX56 2009  Factory Service Manual SN-14
< COMPONENT DIAGNOSIS >
POWER SUPPLY AND GROUND CIRCUIT
Are any fuses blown?
YES >> If fuse is blown, be sure to eliminate cause of malfunction before installing new fuse. Refer to GI-
41, "Circ

Page 3437 of 4171

INFINITI QX56 2009  Factory Service Manual SN
SONAR SENSOR CIRCUIT INSPECTIONSN-15
< COMPONENT DIAGNOSIS >
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M B A
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SONAR SENSOR CIRCUIT INSPECTION
DescriptionINFOID:0000000004173802
With power and ground supplied to the so

Page 3438 of 4171

INFINITI QX56 2009  Factory Service Manual SN-16
< COMPONENT DIAGNOSIS >
SONAR SENSOR CIRCUIT INSPECTION
4. Check continuity between sonar control unit harness connectors
(A, B) and ground.
Are the inspection results normal?
YES >> Inspection

Page 3439 of 4171

INFINITI QX56 2009  Factory Service Manual SN
SONAR BUZZER CIRCUIT INSPECTIONSN-17
< COMPONENT DIAGNOSIS >
C
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M B A
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SONAR BUZZER CIRCUIT INSPECTION
DescriptionINFOID:0000000004173805
When the A/T selector lever is not it pa

Page 3440 of 4171

INFINITI QX56 2009  Factory Service Manual SN-18
< COMPONENT DIAGNOSIS >
SONAR BUZZER CIRCUIT INSPECTION
3. Check continuity between sonar control unit harness connectors
(A, B) and sonar buzzer harness connectors (C).
4. Check continuity betw