BATTERY INFINITI QX56 2011 Factory Service Manual

SRC-20
< SYSTEM DESCRIPTION >
DIAGNOSIS SYSTEM (AIR BAG)
The memory of “TROUBLE DIAG RECORD” cannot be erased.
 “SELF-DIAG RESULT [CAN]” Self-diagnosis result other than “SELF-DIAG R ESULT [CAN]” is erased when touching “Erase”.
SPECIAL FUNCTION
CAUSE OF WARNING (AIR BAG)
This item indicates IGN low or high voltage condition.
The air bag warning lamp blink in user mode when the battery voltage is lowered to the voltage value (less
than 9 V or highroad to the voltage value (more than 16V ) at which the SRS cannot be operated normally. The
air bag warning lamp turns OFF after the battery voltage returns to normal status after blinking.
In such a case, the DTC memory is not performed and changing to the self-diagnostic mode by IGN operation
cannot be performed while the air bag warning lamp illumi nates. “NO DTC” is displayed even if the malfunc-
tioning parts are checked by CONSULT-III.
This function records the following items.
CAUSE OF WARNING (OCCUPANT DETSCTION SYSTEM)
Detection status and detection record is displayed w hen air bag warning lamp blinks due to occupant detec-
tion function stop. Change to trouble diagnosis mode by ignition switch is not possible while warning lamp is
blinking due to occupant detection function stop. “NO DT C” is displayed even if the malfunctioning parts are
checked by CONSULT-III.
Display contents of CONSULT-III Description
Air bag IGN VOLT COND
“LOW” is displayed when IGN low or high voltage is detected. If not, “OK” is
displayed.
IGN VOLT TIME Number of times of IGN low or high voltage is detected.
LOW V RECORED Number of times of IGN ON after IGN low or high voltage is detected at first.
Display contents of CONSULT-III Description
Occupant detection
system FUNCTION STATUS
 “ON” or “STOP” is displayed according to occupant detection status that
is recognized by occupant detection system control unit.
 “STOP” is displayed when occupant detection function is stopped, if not, “ON” is displayed.
STOP DETECTION Displays number of times occupant detection function stop which is detect-
ed by occupant detection system control unit is displayed.
DETECTION RECORD Displays number of times of IGN ON since first detection of occupant detec-
tion function stop is displayed.
Revision: 2010 May2011 QX56

SRC-22
< ECU DIAGNOSIS INFORMATION >
DIAGNOSIS SENSOR UNIT
ECU DIAGNOSIS INFORMATION
DIAGNOSIS SENSOR UNIT
DTC IndexINFOID:0000000006219956
DTC Diagnostic item Explanation Reference page— NO DTC IS DETECTED. When malfunction is
indicated by the “AIR
BAG” warning lamp in
the user modeLow battery voltage (Less than 9 V) or
High battery voltage (more than 16 V)
SRC-19, "
CON-
SULT-III Func-
tion".
Malfunction occurs in Occpant detac-
tion System SRC-19, "
CON-
SULT-III Func-
tion".
Self-diagnostic result is not erased af-
ter repair SRC-14, "
On
Board Diagnosis
Function",
SRC-
19, "CONSULT-
III Function".
Intermittent malfunction is detected in
the past GI-40, "
Intermit-
tent Incident"
No malfunction is detected —
B1001-B1015 CONTROL UNIT Air bag diagnosis sensor unit is malfunctioning 
SRC-41,
"DTC Logic".
 SRC-42,
"DTC Logic".
 SRC-43,
"DTC Logic".
B1017
B1020
B1021 OCCUPANT SENS C/U
[UNIT FAIL]
Malfunction occurs in Occupant Detection System control unit SRC-44, "
DTC
Logic"
B1018OCCUPANT SENS
[UNIT FAIL]
Malfunction occurs in Occupant Detection System sensor SRC-46, "DTC
Logic"
B1022OCCUPANT SENS C/U
[COMM FAIL] Malfunction occurs in Occupant Detection System control unit,
circuit of Occupant Detection System control unit, or air bag di-
agnosis sensor unit SRC-48, "DTC
Logic"
B1023 PASS A/B INDCTR CKT
Front passenger air bag OFF indicator circuit is open or short-
ed to ground or the circuits are shorted each other SRC-50, "DTC
Logic"
B1025
B1032
B1048
OCS SENSOR Malfunction occurs in Occupant Detection System control unit,
circuit of Occupant Detection System control unit, or air bag di-
agnosis sensor unit SRC-52, "DTC
Logic"
B1026-B1031 CONTROL UNIT Air bag diagnosis sensor unit is malfunctioning
SRC-54, "DTC
Logic".
B1033
B1034 CRASH ZONE SEN
[UNIT FAIL]
Crash zone sensor is malfunctioning
SRC-55, "
DTC
Logic".
B1035 CRASH ZONE SEN
[COMM FAIL] Crash zone sensor is malfunctioning SRC-57, "
DTC
Logic".
B1036 CRASH ZONE SEN
[UNMATCH]
Crash zone sensor is out of the specified specification SRC-59, "
DTC
Logic".
B1037
B1039
B1041 CRASH ZONE SEN1 Crash zone
sensor is malfunctioning SRC-60, "
DTC
Logic".
B1042-B1047 CONTROL UNIT Air bag diagnosis sensor unit is malfunctioning SRC-62, "
DTC
Logic".
B1049
B1054 DRIVER AIRBAG MODULE
[OPEN]
Driver air bag module circuit is open (including the spiral cable)
SRC-63, "
DTC
Logic".
Revision: 2010 May2011 QX56

B1001, B1002, B1003, B1004, B1005 DIAGNOSIS SENSOR UNIT
SRC-41
< DTC/CIRCUIT DIAGNOSIS >
C
DE
F
G
I
J
K L
M A
B
SRC
N
O P
DTC/CIRCUIT DIAGNOSIS
B1001, B1002, B1003, B1004, B 1005 DIAGNOSIS SENSOR UNIT
DTC LogicINFOID:0000000006219963
DTC DETECTION LOGIC
DTC CONFIRMATION PROCEDURE
1.CHECK SELF-DIAG RESULT
With CONSULT-III
1. Turn ignition switch ON.
2. Perform “Self Diagnostic Result” mode of “AIR BAG” using CONSULT-III.
Without CONSULT-III
1. Turn ignition switch ON.
2. Check the air bag warning lamp status. Refer to SRC-14, "
On Board Diagnosis Function".
NOTE:
SRS does not enter the diagnosis mode if no malfunction is detected in the user mode.
Is malfunctioning part detected?
YES >> Refer to SRC-41, "Diagnosis Procedure".
NO >> INSPECTION END
Diagnosis ProcedureINFOID:0000000006219964
WARNING:
 Before servicing, turn ignition sw itch OFF, disconnect battery negative terminal, and wait 3 minutes
or more. (To discharge backup capacitor.)
 Never use unspecified tester or other measuring device.
1.CHECK HARNESS CONNECTOR
Check the harness connector.
Is the inspection result normal?
YES >> GO TO 2.
NO >> Replace harness connectors.
2.CHECK WIRING HARNESS
Check the wiring harness externals.
Is the inspection result normal?
YES >> GO TO 3.
NO >> Replace wiring harness.
3.REPLACE AIR BAG DIAGNOSIS SENSOR UNIT
1. Replace air bag diagnosis sensor unit. Refer to SR-26, "
Removal and Installation".
2. Perform DTC confirmation procedure. Refer to SRC-41, "
DTC Logic".
Is DTC detected?
YES >> GO TO 1.
NO >> INSPECTION END
DTC Display contents of
CONSULT-III DTC detecting condition Possible cause
B1001
B1002
B1003
B1004
B1005 CONTROL UNIT Air bag diagnosis sensor unit is malfunctioning Malfunction in air bag diagnosis sensor unit
Revision: 2010 May2011 QX56

SRC-42
< DTC/CIRCUIT DIAGNOSIS >
B1006, B1007, B1008, B1009, B1010 DIAGNOSIS SENSOR UNIT
B1006, B1007, B1008, B1009, B1010 DIAGNOSIS SENSOR UNIT
DTC LogicINFOID:0000000006219965
DTC DETECTION LOGIC
DTC CONFIRMATION PROCEDURE
1.CHECK SELF-DIAG RESULT
With CONSULT-III
1. Turn ignition switch ON.
2. Perform “Self Diagnostic Result” mode of “AIR BAG” using CONSULT-III.
Without CONSULT-III
1. Turn ignition switch ON.
2. Check the air bag warning lamp status. Refer to SRC-14, "
On Board Diagnosis Function".
NOTE:
SRS does not enter the diagnosis mode if no malfunction is detected in the user mode.
Is malfunctioning part detected?
YES >> Refer to SRC-42, "Diagnosis Procedure".
NO >> INSPECTION END
Diagnosis ProcedureINFOID:0000000006219966
WARNING:
 Before servicing, turn ignition switch OFF, disco nnect battery negative terminal, and wait 3 minutes
or more. (To discharge backup capacitor.)
 Never use unspecified tester or other measuring device.
1.CHECK HARNESS CONNECTOR
Check the harness connector.
Is the inspection result normal?
YES >> GO TO 2.
NO >> Replace harness connectors.
2.CHECK WIRING HARNESS
Check the wiring harness externals.
Is the inspection result normal?
YES >> GO TO 3.
NO >> Replace wiring harness.
3.REPLACE AIR BAG DIAGNOSIS SENSOR UNIT
1. Replace air bag diagnosis sensor unit. Refer to SR-26, "
Removal and Installation"
2. Perform DTC confirmation procedure. Refer to SRC-42, "DTC Logic"
Is DTC detected?
YES >> GO TO 1.
NO >> INSPECTION END
DTCDisplay contents of
CONSULT-III DTC detecting condition Possible cause
B1006
B1007
B1008
B1009
B1010 CONTROL UNIT Air bag diagnosis sensor unit is malfunctioning Malfunction in air bag diagnosis sensor unit
Revision: 2010 May2011 QX56

B1011, B1012, B1013, B1014, B1015 DIAGNOSIS SENSOR UNIT
SRC-43
< DTC/CIRCUIT DIAGNOSIS >
C
DE
F
G
I
J
K L
M A
B
SRC
N
O P
B1011, B1012, B1013, B1014, B1015 DIAGNOSIS SENSOR UNIT
DTC LogicINFOID:0000000006219967
DTC DETECTION LOGIC
DTC CONFIRMATION PROCEDURE
1.CHECK SELF-DIAG RESULT
With CONSULT-III
1. Turn ignition switch ON.
2. Perform “Self Diagnostic Result” mode of “AIR BAG” using CONSULT-III.
Without CONSULT-III
1. Turn ignition switch ON.
2. Check the air bag warning lamp status. Refer to SRC-14, "
On Board Diagnosis Function".
NOTE:
SRS does not enter the diagnosis mode if no malfunction is detected in the user mode.
Is malfunctioning part detected?
YES >> Refer to SRC-43, "Diagnosis Procedure".
NO >> INSPECTION END
Diagnosis ProcedureINFOID:0000000006219968
WARNING:
 Before servicing, turn ignition sw itch OFF, disconnect battery negative terminal, and wait 3 minutes
or more. (To discharge backup capacitor.)
 Never use unspecified tester or other measuring device.
1.CHECK HARNESS CONNECTOR
Check the harness connector.
Is the inspection result normal?
YES >> GO TO 2.
NO >> Replace harness connectors.
2.CHECK WIRING HARNESS
Check the wiring harness externals.
Is the inspection result normal?
YES >> GO TO 3.
NO >> Replace wiring harness.
3.REPLACE AIR BAG DIAGNOSIS SENSOR UNIT
1. Replace air bag diagnosis sensor unit. Refer to SR-26, "
Removal and Installation"
2. Perform DTC confirmation procedure. Refer to SRC-43, "DTC Logic"
Is DTC detected?
YES >> GO TO 1.
NO >> INSPECTION END
DTCDisplay contents of
CONSULT-III DTC detecting condition Possible cause
B1011
B1012
B1013
B1014
B1015 CONTROL UNIT Air bag diagnosis sensor unit is malfunctioning Malfunction in air bag diagnosis sensor unit
Revision: 2010 May2011 QX56

SRC-44
< DTC/CIRCUIT DIAGNOSIS >
B1017, B1020, B1021 OCCUPANT SENS C/U
B1017, B1020, B1021 OCCUPANT SENS C/U
DescriptionINFOID:0000000006219969
Suppresses the deployment of front passenger air bag when the condition of passenger seat is empty or occu-
pied with a child and child-seat. Also illuminates front passenger air bag OFF indicator lamp when the condi-
tion of passenger seat is occupied with a child-seat and ch ild. In case of malfunction the blinking of the air bag
warning lamp reports the malfunction to driver, and by the on board self-diagnosis system or CONSULT-III can
detect the cause.
OPERATION
This unit classifies occupant in passenger seat and detec ts electrical malfunctions in Occupant Detection Sys-
tem, and transmits malfunction information to air bag control unit.
STRUCTURE
It is integrated into the seat sensor mat and detects the occupants with Occupant Detection System control
unit that classifies the occupants.
INSTALLATION
Occupant Detection System control unit is installed in the passenger seat cushion.
DTC LogicINFOID:0000000006219970
DTC DETECTION LOGIC
DTC CONFIRMATION PROCEDURE
1.CHECK SELF-DIAG RESULT
With CONSULT-III
1. Turn ignition switch ON.
2. Perform “AIR BAG” Self Diagnostic Result CONSULT-III.
Without CONSULT-III
1. Turn ignition switch ON.
2. Check the air bag warning lamp status. Refer to SRC-14, "
On Board Diagnosis Function".
NOTE:
SRS does not enter diagnosis mode if no malfunction is detected in user mode.
Is malfunctioning part detected?
YES >> Refer to SRC-44, "Diagnosis Procedure".
NO >> INSPECTION END
Diagnosis ProcedureINFOID:0000000006219971
WARNING:
 Before servicing, turn ignition sw itch OFF, disconnect battery negative terminal and wait at least 3
minutes. (To discharge backup capacitor.)
 Never use unspecified tester or other measuring device.
DIAGNOSTIC PROCEDURE
1.CHECK HARNESS CONNECTOR
Check the connection of harness connector.
Is the inspection result normal?
YES >> GO TO 2.
NO >> Replace harness connectors.
DTC No. Trouble diagnosis name DTC detecting condition Possible cause
B1017
B1020
B1021 OCCUPANT SENS C/U
[UNIT FAIL]
Trouble occurs in Occupant Detection
System control unit  Disconnection of wiring harness
 Malfunction in Occupant Detection
System control unit
 Malfunction in air bag diagnosis sen-
sor unit
Revision: 2010 May2011 QX56

SRC-46
< DTC/CIRCUIT DIAGNOSIS >
B1018 OCCUPANT SENS
B1018 OCCUPANT SENS
DescriptionINFOID:0000000006219972
Suppresses the deployment of front passenger air bag when the condition of passenger seat is empty or occu-
pied with a child and child-seat. Also illuminates front passenger air bag OFF indicator lamp when the condi-
tion of passenger seat is occupied with a child-seat and ch ild. In case of malfunction the blinking of the air bag
warning lamp reports the malfunction to driver, and by the on board self-diagnosis system or CONSULT-III can
detect the cause.
OPERATION
The unit classifies occupant in passenger seat and trans mits it to Occupant Detection System control unit.
STRUCTURE
Multiple sensors are installed in the sensor mat to prevent incorrect sensing induced by the sitting position.
INSTALLATION
Occupant Detection System sensor is installed in the passenger seat cushion.
DTC LogicINFOID:0000000006219973
DTC DETECTION LOGIC
DTC CONFIRMATION PROCEDURE
1.CHECK SELF-DIAG RESULT
With CONSULT-III
1. Turn ignition switch ON.
2. Perform “AIR BAG” Self Diagnostic Result CONSULT-III.
Without CONSULT-III
1. Turn ignition switch ON.
2. Check the air bag warning lamp status. Refer to SRC-14, "
On Board Diagnosis Function".
NOTE:
SRS does not enter diagnosis mode if no malfunction is detected in user mode.
Is malfunctioning part detected?
YES >> Refer to SRC-46, "Diagnosis Procedure".
NO >> INSPECTION END
Diagnosis ProcedureINFOID:0000000006219974
WARNING:
 Before servicing, turn ignition sw itch OFF, disconnect battery negative terminal and wait at least 3
minutes. (To discharge backup capacitor.)
 Never use unspecified tester or other measuring device.
DIAGNOSTIC PROCEDURE
1.CHECK HARNESS CONNECTOR
Check the connection of harness connector.
Is the inspection result normal?
YES >> GO TO 2.
NO >> Replace harness connectors.
DTC No. Trouble diagnosis name DTC detecting condition Possible cause
B1018 OCCUPANT SENS [UNIT FAIL] Malfunction occurs in Occupant Detec-
tion System sensor  Disconnection of wiring harness
 Malfunction in Occupant Detection
System sensor
 Malfunction in Occupant Detection System control unit
 Malfunction in air bag diagnosis sen-
sor unit
Revision: 2010 May2011 QX56

SRC-48
< DTC/CIRCUIT DIAGNOSIS >
B1022 OCCUPANT SENS C/U
B1022 OCCUPANT SENS C/U
DescriptionINFOID:0000000006219975
Suppresses the deployment of front passenger air bag when the condition of passenger seat is empty or occu-
pied with a child and child-seat. Also illuminates front passenger air bag OFF indicator lamp when the condi-
tion of passenger seat is occupied with a child-seat and ch ild. In case of malfunction the blinking of the air bag
warning lamp reports the malfunction to driver, and by the on board self-diagnosis system or CONSULT-III can
detect the cause.
OPERATION
This unit classifies occupant in passenger seat and detec ts electrical malfunction in Occupant Detection Sys-
tem and transmits malfunction information to air bag control unit.
STRUCTURE
It is integrated into the seat sensor mat and detects the occupants and Occupant Detection System control
unit that classifies the occupants.
INSTALLATION
Occupant Detection System control unit is installed in the passenger seat cushion.
DTC LogicINFOID:0000000006219976
DTC DETECTION LOGIC
DTC CONFIRMATION PROCEDURE
1.CHECK SELF-DIAG RESULT
With CONSULT-III
1. Turn ignition switch ON.
2. Perform “AIR BAG” Self Diagnostic Result CONSULT-III.
Without CONSULT-III
1. Turn ignition switch ON.
2. Check the air bag warning lamp status. Refer to SRC-14, "
On Board Diagnosis Function".
NOTE:
SRS does not enter diagnosis mode if no malfunction is detected in user mode.
Is malfunctioning part detected?
YES >> Refer to SRC-48, "Diagnosis Procedure".
NO >> INSPECTION END
Diagnosis ProcedureINFOID:0000000006219977
WARNING:
 Before servicing, turn ignition sw itch OFF, disconnect battery negative terminal and wait at least 3
minutes. (To discharge backup capacitor.)
 Never use unspecified tester or other measuring device.
DIAGNOSTIC PROCEDURE
1.CHECK HARNESS CONNECTOR
Check the connection of harness connector.
Is the inspection result normal?
YES >> GO TO 2.
NO >> Replace harness connectors.
DTC No. Trouble diagnosis name DTC detecting condition Possible cause
B1022 OCCUPANT SENS C/U [COMM FAIL] Malfunction occurs in Occupant Detec-
tion System control unit, circuit of Occu-
pant Detection System control unit-Air
bag diagnosis sensor unit or Air bag di-
agnosis sensor unit  Disconnection of wiring harness
 Malfunction in Occupant Detection
System control unit
 Malfunction in air bag diagnosis sen-
sor unit
Revision: 2010 May2011 QX56

SRC-50
< DTC/CIRCUIT DIAGNOSIS >
B1023 PASS A/B INDCTR CKT
B1023 PASS A/B INDCTR CKT
DescriptionINFOID:0000000006219978
Suppresses the deployment of front passenger air bag when the condition of passenger seat is empty or occu-
pied with a child and child-seat. Also illuminates front passenger air bag OFF indicator lamp when the condi-
tion of passenger seat is occupied with a child-seat and ch ild. In case of malfunction the blinking of the air bag
warning lamp reports the malfunction to driver, and by the on board self-diagnosis system or CONSULT-III can
detect the cause.
OPERATION
Illuminates front passenger air bag OFF indicator when t he passenger seat is empty or occupied by a child or
a child-seat.
STRUCTURE
Front passenger air bag OFF indicator with LED illumination.
INSTALLATION
Front passenger air bag OFF indicator is inst alled at the instrument panel center.
DTC LogicINFOID:0000000006219979
DTC DETECTION LOGIC
DTC CONFIRMATION PROCEDURE
1.CHECK SELF-DIAG RESULT
With CONSULT-III
1. Turn ignition switch ON.
2. Perform “AIR BAG” Self Diagnostic Result CONSULT-III.
Without CONSULT-III
1. Turn ignition switch ON.
2. Check the air bag warning lamp status. Refer to SRC-14, "
On Board Diagnosis Function".
NOTE:
SRS does not enter diagnosis mode if no malfunction is detected in user mode.
Is malfunctioning part detected?
YES >> Refer to SRC-50, "Diagnosis Procedure".
NO >> INSPECTION END
Diagnosis ProcedureINFOID:0000000006219980
WARNING:
 Before servicing, turn ignition sw itch OFF, disconnect battery negative terminal and wait at least 3
minutes. (To discharge backup capacitor.)
 Never use unspecified tester or other measuring device.
DIAGNOSTIC PROCEDURE
1.CHECK HARNESS CONNECTOR
Check the connection of harness connector.
Is the inspection result normal?
YES >> GO TO 2.
NO >> Replace harness connectors.
DTC No. Trouble diagnosis name DTC detecting condition Possible cause
B1023 PASS A/B INDCTR CKT [UNIT FAIL] Passenger air bag OFF indicator circuit
is open or shorted to ground or the cir-
cuits are shorted each other  Disconnection of wiring harness
 Malfunction in front passenger air
bag OFF indicator
 Malfunction in air bag diagnosis sen- sor unit
Revision: 2010 May2011 QX56

SRC-52
< DTC/CIRCUIT DIAGNOSIS >
B1025, B1032, B1048 OCS SENSOR
B1025, B1032, B1048 OCS SENSOR
DescriptionINFOID:0000000006219981
Suppresses the deployment of front passenger air bag when the condition of passenger seat is empty or occu-
pied with a child and child-seat. Also illuminates front passenger air bag OFF indicator lamp when the condi-
tion of passenger seat is occupied with a child-seat and ch ild. In case of malfunction the blinking of the air bag
warning lamp reports the malfunction to driver, and by the on board self-diagnosis system or CONSULT-III can
detect the cause.
OPERATION
This unit classifies occupant in passenger seat and detec ts electrical malfunction in Occupant Detection Sys-
tem and transmits malfunction information to air bag control unit.
STRUCTURE
It is integrated into the seat sensor mat and detects the occupants and Occupant Detection System control
unit that classifies the occupants.
INSTALLATION
Occupant Detection System control unit is installed in the passenger seat cushion.
DTC LogicINFOID:0000000006219982
DTC DETECTION LOGIC
DTC CONFIRMATION PROCEDURE
1.CHECK SELF-DIAG RESULT
With CONSULT-III
1. Turn ignition switch ON.
2. Perform “AIR BAG” Self Diagnostic Result CONSULT-III.
Without CONSULT-III
1. Turn ignition switch ON.
2. Check the air bag warning lamp status. Refer to SRC-14, "
On Board Diagnosis Function".
NOTE:
SRS does not enter diagnosis mode if no malfunction is detected in user mode.
Is malfunctioning part detected?
YES >> Refer to SRC-52, "Diagnosis Procedure".
NO >> INSPECTION END
Diagnosis ProcedureINFOID:0000000006219983
WARNING:
 Before servicing, turn ignition sw itch OFF, disconnect battery negative terminal and wait at least 3
minutes. (To discharge backup capacitor.)
 Never use unspecified tester or other measuring device.
DIAGNOSTIC PROCEDURE
1.CHECK HARNESS CONNECTOR
Check the connection of harness connector.
Is the inspection result normal?
YES >> GO TO 2.
NO >> Replace harness connectors.
DTC No. Trouble diagnosis name DTC detecting condition Possible cause
B1025
B1032
B1048 OCS SENSOR Malfunction occu
rs in Occupant Detec-
tion System control unit, circuit of Occu-
pant Detection System control unit-Air
bag diagnosis sensor unit or Air bag di-
agnosis sensor unit  Disconnection of wiring harness
 Internal breakdown in Occupant De-
tection System control unit
 Malfunction in air bag diagnosis sen-
sor unit
Revision: 2010 May2011 QX56