INFINITI QX56 2008 Factory Service Manual

B1XXX AIR BAG DIAGNOSIS SENSOR UNITSRC-63
< COMPONENT DIAGNOSIS >
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2.IGNITION SWITCH
After air bag warning lamp lights for 7 seconds, turn ignition switch OFF within 1 second.
>> GO TO 3
3.WAIT TIME
Wait more than 3 seconds.
>> GO TO 4
4.REPEAT STEPS
Repeat steps 1 to 3 twice.
>> GO TO 5
5.IGNITION SWITCH
Turn ignition switch ON.
>> GO TO 6
6.DIAGNOSTIC MODE
SRS system is now in diagnostic mode and AIR BAG warning lamp flashes. Refer to SRC-85, "
Trouble Diag-
nosis without CONSULT-III".
>> END
Diagnosis Procedure (C omponent Diagnosis)INFOID:0000000001735350
Recheck SRS after each replacement.
1.HARNESS CONNECTOR
Is there any visible damage to the connector?
YES or NO
YES >> Replace the harness.
NO >> GO TO 2
2.WIRING HARNESS
Is there any visible damage to the harness?
YES or NO
YES >> Replace the harness.
NO >> GO TO 3
3.AIR BAG DIAGNOSIS SENSOR UNIT
Replace the air bag diagnosis sensor unit. Refer to SR-17, "
Removal and Installation".
>> GO TO 4
4.RELATED HARNESS
Replace the related harness.
>>END
Revision: March 2010 2008 QX56

SRC-64
< COMPONENT DIAGNOSIS >
B1023 PASSENGER AIR BAG OFF INDICATOR
B1023 PASSENGER AIR BAG OFF INDICATOR
DescriptionINFOID:0000000001735351
DTC B1023 FRONT PASSENGER AIR BAG OFF INDICATOR
The front passenger air bag off indicator is wired to the air bag diagnosis sensor unit. The air bag diagnosis
sensor unit monitors the front passenger air bag off indicator and circuit for failures.
PA R T L O C AT I O N
Refer to SRC-7, "SRS Component Parts Location".
DTC LogicINFOID:0000000001735352
DTC DETECTION LOGIC
With CONSULT-lll
Without CONSULT-lll
DTC CONFIRMATION PROCEDURE (With CONSULT-lll)
1.INSPECTION START
Turn ignition switch ON.
>> GO TO 2.
2.CHECK SELF-DIAG RESULT
Check for the DTC on CONSULT-lll.
Is the DTC detected?
YES >> Refer to SRC-65, "Diagnosis Procedure (Component Diagnosis)".
NO >> Inspection End.
DTC CONFIRMATION PROCEDURE (Without CONSULT-lll)
NOTE:
SRS will not enter diagnosis mode if no malfunction is detected in user mode.
1.IGNITION SWITCH
Turn ignition switch ON.
CONSULT-III name DTC DTC detecting condition Repair order
PASS A/B INDCTR CKT B1023 Front passenger air bag off indicator is
malfunctioning.
1. Visually check the wiring harness connection.
2. Replace the harness if it has visible damage.
3. Replace the front passenger air bag off indi-
cator.
4. Replace the air bag diagnosis sensor unit.
5. Replace the related harness.
WHIA0212E
Revision: March 2010 2008 QX56

B1023 PASSENGER AIR BAG OFF INDICATORSRC-65
< COMPONENT DIAGNOSIS >
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>> GO TO 2
2.IGNITION SWITCH
After air bag warning lamp lights for 7 seconds, turn ignition switch OFF within 1 second.
>> GO TO 3
3.WAIT TIME
Wait more than 3 seconds.
>> GO TO 4
4.REPEAT STEPS
Repeat steps 1 to 3 twice.
>> GO TO 5
5.IGNITION SWITCH
Turn ignition switch ON.
>> GO TO 6
6.DIAGNOSTIC MODE
SRS system is now in diagnostic mode and AIR BAG warning lamp flashes. Refer to SRC-85, "
Trouble Diag-
nosis without CONSULT-III".
>> END
Diagnosis Procedure (C omponent Diagnosis)INFOID:0000000001735353
Recheck SRS after each replacement.
1.HARNESS CONNECTOR
Is there any visible damage to the connector?
YES or NO
YES >> Replace the harness.
NO >> GO TO 2
2.WIRING HARNESS
Is there any visible damage to the harness?
YES or NO
YES >> Replace the harness.
NO >> GO TO 3
3.FRONT PASSENGER AIR BAG OFF INDICATOR
Replace the front passenger air bag off indicator. Refer to IP-15, "
Removal and Installation".
>> GO TO 4
4.AIR BAG DIAGNOSIS SENSOR UNIT
Replace the air bag diagnosis sensor unit. Refer to SR-17, "
Removal and Installation".
>> GO TO 5
5.RELATED HARNESS
Replace the related harness.
Revision: March 2010 2008 QX56

SRC-66
< COMPONENT DIAGNOSIS >
B1023 PASSENGER AIR BAG OFF INDICATOR
>>END
Revision: March 2010 2008 QX56

B1017 – B1022 OCCUPANT CLASSIFICATION SYSTEM
SRC-67
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B1017 – B1022 OCCUPANT CLASSIFICATION SYSTEM
DescriptionINFOID:0000000006081142
DTC B1017 – B1022 OCCUPANT CL ASSIFICATION SYSTEM (OCS)
The OCS control unit is wired to the air bag diagnosis sensor unit. The air bag diagnosis sensor unit will mon-
itor the OCS for failures and interruptions in co mmunication between the OCS control unit and the air bag
diagnosis sensor unit.
PA R T L O C AT I O N
Refer to SRC-7, "SRS Component Parts Location".
DTC LogicINFOID:0000000006081143
DTC DETECTION LOGIC
With CONSULT-lll
Without CONSULT-lll
CONSULT-III name DTC DTC detecting condition Repair order
OCCUPANT SENS C/U [UNIT FAIL] B1017 The OCS control unit is malfunctioning. 1. Replace the RH front seat cushion assembly.
Do not disassemble the seat cushion assem-
bly.
B1021
B1020 The OCS control unit is malfunctioning. 1. Replace the harness if it has visible damage.
2. Replace the RH front seat cushion assembly.
Do not disassemble the seat cushion assem-
bly.
3. Replace the RH front seat belt assembly.
OCCUPANT SENS [UNIT FAIL] B1018The OCS sensor is malfunctioning. 1. Visually check the wiring harness connection
to the OCS sensor.
2. Replace the RH front seat cushion assembly. Do not disassemble the seat cushion assem-
bly.
BELT TENSION SENS [UNIT FAIL] B1019The belt tension sensor is malfunctioning. 1. Visually check the wiring harness connection.
2. Replace the harness if it has visible damage.
3. Replace the RH front seat belt assembly.
4. Replace the RH front seat cushion assembly. Do not disassemble the seat cushion assem-
bly.
5. Replace the related harness.
OCCUPANT SENS C/U [COMM FAIL] B1022Communication between the OCS control
unit and the air bag diagnosis sensor unit is
interrupted.
1. Visually check the wiring harness connection.
2. Replace the harness if it has visible damage.
3. Replace the RH front seat cushion assembly.
Do not disassemble the seat cushion assem-
bly.
4. Replace the air bag diagnosis sensor unit.
5. Replace the related harness.
WHIA0211E
Revision: March 2010 2008 QX56

SRC-68
< COMPONENT DIAGNOSIS >
B1017 – B1022 OCCUPANT CLASSIFICATION SYSTEM
DTC CONFIRMATION PROCEDURE (With CONSULT-lll)
1.INSPECTION START
Turn ignition switch ON.
>> GO TO 2.
2.CHECK SELF-DIAG RESULT
Check for the DTC on CONSULT-lll.
Is the DTC detected?
YES >> Refer to SRC-68, "Diagnosis Procedure (Component Diagnosis)".
NO >> Inspection End.
DTC CONFIRMATION PROCEDURE (Without CONSULT-lll)
NOTE:
SRS will not enter diagnosis mode if no malfunction is detected in user mode.
1.IGNITION SWITCH
Turn ignition switch ON.
>> GO TO 2
2.IGNITION SWITCH
After air bag warning lamp lights for 7 seconds, turn ignition switch OFF within 1 second.
>> GO TO 3
3.WAIT TIME
Wait more than 3 seconds.
>> GO TO 4
4.REPEAT STEPS
Repeat steps 1 to 3 twice.
>> GO TO 5
5.IGNITION SWITCH
Turn ignition switch ON.
>> GO TO 6
6.DIAGNOSTIC MODE
SRS system is now in diagnostic mode and AI R BAG warning lamp flashes. Refer to SRC-7, "
SRS Compo-
nent Parts Location".
>> END
Diagnosis Procedure (C omponent Diagnosis)INFOID:0000000006081144
Recheck SRS after each corrective action.
1.CHECK CURRENT DTC
Does CONSULT-III indicate B1018, B1019, B1020 or B1022?
YES or NO
YES >> GO TO 2
NO >> GO TO 13
Revision: March 2010 2008 QX56

B1017 – B1022 OCCUPANT CLASSIFICATION SYSTEM
SRC-69
< COMPONENT DIAGNOSIS >
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2.HARNESS CONNECTOR
Is there any visible damage to the OCS sub-harness connec tor (DTC B1022) or to the belt tension sensor con-
nector (DTC B1019)?
YES or NO
YES >> Replace the harness.
NO >> GO TO 3
3.WIRING HARNESS
Is there any visible damage to the body or seat sub harness?
YES or NO
YES >> Replace the harness.
NO >> GO TO 4
4.CHECK CURRENT DTC
Does CONSULT-III indicate B1022?
YES or NO
YES >> GO TO 5
NO >> GO TO 6
5.OCS CONTROL UNIT HARNESS CONNECTOR
Is the OCS control unit or body harness connector disconnected?
YES or NO
YES >> Connect the harness. Clear the DTC.
NO >> GO TO 13
6.CHECK CURRENT DTC
Does CONSULT-III indicate B1018?
YES or NO
YES >> GO TO 7
NO >> GO TO 8
7.OCS SENSOR HARNESS CONNECTOR
Is the OCS sensor harness connector disconnected?
YES or NO
YES >> Connect the harness. Clear the DTC.
NO >> GO TO 8
8.CHECK CURRENT DTC
Does CONSULT-III indicate B1020?
YES or NO
YES >> GO TO 9
NO >> GO TO 10
9.BELT TENSION SENSOR
Inspect the belt tension sensor, belt tension sensor connector and harness.
Are the inspection results normal?
YES >> GO TO 10
NO >> GO TO 12
10.CHECK CURRENT DTC
Does CONSULT-III indicate B1019?
YES or NO
YES >> GO TO 11
NO >> GO TO 12
11 .BELT TENSION SENSOR HARNESS CONNECTOR
Revision: March 2010 2008 QX56

SRC-70
< COMPONENT DIAGNOSIS >
B1017 – B1022 OCCUPANT CLASSIFICATION SYSTEM
Is the belt tension sensor harness connector disconnected?
YES or NO
YES >> Connect the harness. Clear the DTC.
NO >> GO TO 12
12.REPLACE RH FRONT SEAT BELT ASSEMBLY
Replace the RH front seat belt assembly.
>> GO TO 13
13.REPLACE RH FRONT SEAT CUSHION ASSEMBLY
Replace the RH front seat cushion assembly. Refer to SE-49, "
Removal and Installation".
>> GO TO 14
14.AIR BAG DIAGNOSIS SENSOR UNIT
Replace the air bag diagnosis sensor unit. Refer to SR-17, "
Removal and Installation".
>> END.
Revision: March 2010 2008 QX56

B1209 – B1211 COLLISION DETECTIONSRC-71
< COMPONENT DIAGNOSIS >
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B1209 – B1211 COLLISION DETECTION
DescriptionINFOID:0000000001735357
DTC B1209 - B1211 COLLISION DETECTION
The air bag diagnosis sensor unit will set this DTC if it has detected a collision or rollover which has resulted in
a deployment of one or more air bags or pre-tensioners. If this DTC is detected after a SRS repair, the air bag
diagnosis sensor unit has not yet been replaced. This DTC can not be erased.
PA R T L O C AT I O N
Refer to SRC-7, "SRS Component Parts Location".
DTC LogicINFOID:0000000001735358
DTC DETECTION LOGIC
With CONSULT-lll
DTC CONFIRMATION PROCEDURE (With CONSULT-lll)
1.INSPECTION START
Turn ignition switch ON.
>> GO TO 2.
2.CHECK SELF-DIAG RESULT
Check for the DTC on CONSULT-lll.
Is the DTC detected?
YES >> Refer to SRC-71, "Diagnosis Procedure (Component Diagnosis)".
NO >> Inspection End.
Diagnosis Procedure (C omponent Diagnosis)INFOID:0000000001735359
Refer to SR-19, "For Frontal Collision" or SR-20, "For Side and Rollover Collision".
CONSULT-III name DTC DTC detecting condition Repair order
FRONTAL COLLISION DETECTION B1209Driver and/or front passenger air bag mod-
ules are deployed. Refer to SR-19, "
For Frontal Collision".
SIDE COLLISION DE- TECTION B1210
Side and/or curtain air bag modules are
deployed. Refer to SR-20, "
For Side and Rollover Collision".
ROLLOVER DETEC- TION B1211Curtain air bag module and seat belt pre-
tensioner are deployed.
Revision: March 2010
2008 QX56

SRC-72
< ECU DIAGNOSIS >
DIAGNOSIS SENSOR UNIT
ECU DIAGNOSIS
DIAGNOSIS SENSOR UNIT
Wiring DiagramINFOID:0000000001735360
AWHWA0002GB
Revision: March 20102008 QX56