2009 INFINITI QX56 ECU

SN-30
< ECU DIAGNOSIS >
SONAR CONTROL UNIT FOR REAR SONAR SYSTEM
DTC Index
INFOID:0000000003776755
Fault Code Malfunction Service Procedure
11 Rear sonar sensor LH outer 1. Check harness for open or short.
2. Replace sonar sensor. Refer to SN-49, "
Removal and In-
stallation".
12
Rear sonar sensor LH inner
13 Rear sonar sensor RH inner
14 Rear sonar sensor RH outer
21 Sonar buzzer 1. Refer to SN-17, "
Diagnosis Procedure (With Rear Sonar
System)".
2. Check harness for open or short.
3. Refer to SN-45, "
Symptom Table".
22 Sonar system OFF indicator 1. Refer to SN-19, "
Diagnosis Procedure (With Rear Sonar
System)".
2. Check harness for open or short.
3. Refer to symptom table.
23
Rear sonar system OFF switch
24 Sonar control unit Replace sonar control unit. Refer to
SN-50, "
Removal and In-
stallation".
Revision: December 20092009 QX56

SN
SONAR CONTROL UNIT FOR FRONT AND REAR SONAR SYSTEMSN-31
< ECU DIAGNOSIS >
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SONAR CONTROL UNIT FOR FR ONT AND REAR SONAR SYSTEM
Reference ValueINFOID:0000000003776756
SONAR CONTROL UNIT HARNESS TERMINAL LAYOUT
TERMINALS AND REFERENCE VA LUES FOR SONAR CONTROL UNIT
AWNIA1547ZZ
Te r m i n a l
(color) Item Condition
Reference value (V)
(Approx.)
Ignition
switch Operation
1 (G/R) Sonar control unit
power ON
— Battery voltage
2 (L) Sonar buzzer drive
signal
ON Object sensed
Battery voltage
3 (G/W) Reverse signal ONTransmission gear selector lever in R posi-
tion
Battery voltage
Transmission gear selector lever not in R
position 0
4 (B) Sonar control unit
ground ——
—
5 (BR/Y) Sonar system OFF
indicator output ON
Sonar system OFF
switch ON
0
OFF Battery voltage
6 (R) Rear sonar buzzer
return
ON
— 0 - 12 (variable)
8 (G/W) K-line ON— —
9 (LG/B) Rear sonar sensor
power ON Ignition switch ON
Battery voltage
11 ( L G ) Sonar system OFF
switch signal
ONSonar system OFF
switch ON
0
OFF Battery voltage
12 (Y) Rear sonar sensor
ground ON
— —
13 (LG) Rear sonar sensor
signal - RH inner ON• Sonar system OFF switch ON
• Transmission gear selector lever in R po-
sition
• Distance obstacles Battery voltage
14 (O) Rear sonar sensor
signal - LH inner ON• Sonar system OFF switch ON
• Transmission gear selector lever in R po-
sition
• Distance obstacles Battery voltage
15 (P) Rear sonar sensor
signal - LH outer ON• Sonar system OFF switch ON
• Transmission gear selector lever in R po-
sition
• No obstacles Battery voltage
Revision: December 20092009 QX56

SN-32
< ECU DIAGNOSIS >
SONAR CONTROL UNIT FOR FRONT AND REAR SONAR SYSTEM
16 (GR)Rear sonar sensor
signal - RH outer ON• Sonar system OFF switch ON
• Transmission gear selector lever in R po-
sition
• No obstacles Battery voltage
17 (LG/B) Front sonar sensor
power
ON Ignition switch ON
Battery voltage
18 (GR/R) Park position signal ON Vehicle in PARK 12
19 (GR) Front sonar sensor
signal - RH outer ON• Sonar system OFF switch ON
• Transmission gear selector lever in a for-
ward drive gear
• Distance obstacles Battery voltage
20 (LG) Front sonar sensor
signal - RH inner ON• Sonar system OFF switch ON
• Transmission gear selector lever in re-
verse or a forward drive gear
• No obstacles Battery voltage
21 (W/R) Vehicle speed signal ON Speedometer operated
[When vehicle speed is approx. 40 km/h (25
MPH)]NOTE:
Maximum voltage may be 12V due
to specifications (connected units).
23 (R) Front sonar buzzer
return ON
— 0 - 12 (variable)
24 (P) Front sonar sensor
signal - LH outer
ON• Sonar system OFF switch ON
• Transmission gear selector lever in re-
verse or a forward drive gear
• No obstacles Battery voltage
25 (O) Front sonar sensor
signal - LH inner
ON• Sonar system OFF switch ON
• Transmission gear selector lever in a for-
ward drive gear
• Distance obstacles Battery voltage
26 (Y) Front sonar sensor
ground ON
— —
Te r m i n a l
(color) Item Condition
Reference value (V)
(Approx.)
Ignition
switch Operation
PKIC0643E
Revision: December 20092009 QX56

SN
SONAR CONTROL UNIT FOR FRONT AND REAR SONAR SYSTEMSN-33
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Wiring DiagramINFOID:0000000003776757
ABNWA0034GB
Revision: December 20092009 QX56

SN-34
< ECU DIAGNOSIS >
SONAR CONTROL UNIT FOR FRONT AND REAR SONAR SYSTEM
ABNWA0035GB
Revision: December 20092009 QX56

SN
SONAR CONTROL UNIT FOR FRONT AND REAR SONAR SYSTEMSN-35
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ABNIA0083GB
Revision: December 20092009 QX56

SN-36
< ECU DIAGNOSIS >
SONAR CONTROL UNIT FOR FRONT AND REAR SONAR SYSTEM
ABNIA0084GB
Revision: December 20092009 QX56

SN
SONAR CONTROL UNIT FOR FRONT AND REAR SONAR SYSTEMSN-37
< ECU DIAGNOSIS >
C
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K L
M B A
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ABNIA0085GB
Revision: December 20092009 QX56