Murano Cross Cabriolet Z51 (2012 year). Manual — part 85
OCCUPANT CLASSIFICATION SYSTEM CONTROL UNIT
SR-33
< REMOVAL AND INSTALLATION >
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OCCUPANT CLASSIFICATION SYSTEM CONTROL UNIT
Removal and Installation
INFOID:0000000007566550
For removal and installation
The occupant classification system control unit and seat sensor mat are an integral part of the front passenger
seat cushion and are replaced as an assembly. Refer to
SE-39, "Removal and Installation"
Revision: 2013 February
2012 Murano CrossCabriolet
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RESTRAINTS
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SECTION
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CONTENTS
SRS AIRBAG CONTROL SYSTEM
PRECAUTION . . . . . . . . . . . ...
PRECAUTIONS . . . . . . . . . . . . ...
Precaution for Battery Service . . . . . . . . ..
Service Procedure Precautions for Models with a
Pop-up Roll Bar . . . . . . . . . . . . . .....
SYSTEM DESCRIPTION . . . . . . . ..
COMPONENT PARTS . . . . . . . . . .
Component Parts Location . . . . . . . . . ....
Component Description . . . . . . . . . . .....
SYSTEM . . . . . . . . . . . . . . . .
System Diagram . . . . . . . . . . . . . ..
System Description . . . . . . . . . . . . .
DIAGNOSIS SYSTEM (AIR BAG) . . . . . .
Description . . . . . . . . . . . . . . . ..
On Board Diagnosis Function . . . . . . . . .
CONSULT Function . . . . . . . . . . . .
ECU DIAGNOSIS INFORMATION . . . ..
DIAGNOSIS SENSOR UNIT . . . . . . . ..
DTC Index . . . . . . . . . . . . . . . ..
WIRING DIAGRAM . . . . . . . . . ..
SRS AIR BAG SYSTEM . . . . . . . . . .
Wiring Diagram . . . . . . . . . . . . . ...
BASIC INSPECTION . . . . . . . . ...
DIAGNOSIS AND REPAIR WORK FLOW . .
Work Flow . . . . . . . . . . . . . . . ...
DTC/CIRCUIT DIAGNOSIS . . . . . . .
B1001, B1002, B1003, B1004, B1005 DIAG-
NOSIS SENSOR UNIT . . . . . . . . . ..
DTC Logic . . . . . . . . . . . . . . . .
Diagnosis Procedure . . . . . . . . . . . ...
B1006, B1007, B1008, B1009, B1010 DIAG-
NOSIS SENSOR UNIT . . . . . . . . . ..
DTC Logic . . . . . . . . . . . . . . . .
Diagnosis Procedure . . . . . . . . . . . ...
B1011, B1012, B1013, B1014, B1015 DIAG-
NOSIS SENSOR UNIT . . . . . . . . . ..
DTC Logic . . . . . . . . . . . . . . . .
Diagnosis Procedure . . . . . . . . . . . ...
B1017, B1020, B1021 OCCUPANT SENS C/U
...
DTC Logic . . . . . . . . . . . . . . . .
Diagnosis Procedure . . . . . . . . . . . ...
B1018 OCCUPANT SENS . . . . . . . .
DTC Logic . . . . . . . . . . . . . . . .
Diagnosis Procedure . . . . . . . . . . . ...
B1022 OCCUPANT SENS C/U . . . . . . .
DTC Logic . . . . . . . . . . . . . . . .
Diagnosis Procedure . . . . . . . . . . . ...
B1023 PASSENGER AIR BAG OFF INDICA-
TOR . . . . . . . . . . . . . . . . ...
DTC Logic . . . . . . . . . . . . . . . .
Diagnosis Procedure . . . . . . . . . . . ...
B1025, B1032, B1048 OCS SENSOR . . . ..
DTC Logic . . . . . . . . . . . . . . . .
Diagnosis Procedure . . . . . . . . . . . ...
B1026, B1027, B1028, B1029, B1030, B1031
DIAGNOSIS SENSOR UNIT . . . . . . . .
DTC Logic . . . . . . . . . . . . . . . .
Diagnosis Procedure . . . . . . . . . . . ...
Revision: 2013 February
2012 Murano CrossCabriolet
SRC-2
B1033, B1034 CRASH ZONE SENSOR . . ...
DTC Logic . . . . . . . . . . . . . . . ...
Diagnosis Procedure . . . . . . . . . . . ..
B1035 CRASH ZONE SENSOR . . . . . .
DTC Logic . . . . . . . . . . . . . . . ...
Diagnosis Procedure . . . . . . . . . . . ..
B1036 CRASH ZONE SENSOR . . . . . .
DTC Logic . . . . . . . . . . . . . . . ...
Diagnosis Procedure . . . . . . . . . . . ..
B1037, B1039, B1041 CRASH ZONE SEN-
SOR . . . . . . . . . . . . . . . . .
DTC Logic . . . . . . . . . . . . . . . ...
Diagnosis Procedure . . . . . . . . . . . ..
B1042, B1043, B1044, B1045, B1046, B1047
DIAGNOSIS SENSOR UNIT . . . . . . . ..
DTC Logic . . . . . . . . . . . . . . . ...
Diagnosis Procedure . . . . . . . . . . . ..
B1049, B1054 DRIVER AIR BAG MODULE . .
DTC Logic . . . . . . . . . . . . . . . ...
Diagnosis Procedure . . . . . . . . . . . ..
B1050, B1055 DRIVER AIR BAG MODULE . .
DTC Logic . . . . . . . . . . . . . . . ...
Diagnosis Procedure . . . . . . . . . . . ..
B1051, B1056 DRIVER AIR BAG MODULE . .
DTC Logic . . . . . . . . . . . . . . . ...
Diagnosis Procedure . . . . . . . . . . . ..
B1052, B1057 DRIVER AIR BAG MODULE . .
DTC Logic . . . . . . . . . . . . . . . ...
Diagnosis Procedure . . . . . . . . . . . ..
B1058, B1059, B1060, B1061, B1062, B1063
DIAGNOSIS SENSOR UNIT . . . . . . . ..
DTC Logic . . . . . . . . . . . . . . . ...
Diagnosis Procedure . . . . . . . . . . . ..
B1065, B1070 PASSENGER AIR BAG MOD-
ULE . . . . . . . . . . . . . . . . .
DTC Logic . . . . . . . . . . . . . . . ...
Diagnosis Procedure . . . . . . . . . . . ..
B1066, B1071 PASSENGER AIR BAG MOD-
ULE . . . . . . . . . . . . . . . . .
DTC Logic . . . . . . . . . . . . . . . ...
Diagnosis Procedure . . . . . . . . . . . ..
B1067, B1072 PASSENGER AIR BAG MOD-
ULE . . . . . . . . . . . . . . . . .
DTC Logic . . . . . . . . . . . . . . . ...
Diagnosis Procedure . . . . . . . . . . . ..
B1068, B1073 PASSENGER AIR BAG MOD-
ULE . . . . . . . . . . . . . . . . .
DTC Logic . . . . . . . . . . . . . . . ...
Diagnosis Procedure . . . . . . . . . . . ...
B1074, B1075, B1076, B1077, B1078, B1079
DIAGNOSIS SENSOR UNIT . . . . . . . .
DTC Logic . . . . . . . . . . . . . . . ...
Diagnosis Procedure . . . . . . . . . . . ...
B1080, B1096 DRIVER AIR BAG MODULE . .
DTC Logic . . . . . . . . . . . . . . . ...
Diagnosis Procedure . . . . . . . . . . . ...
B1081 SEAT BELT PRE-TENSIONER RH . ...
DTC Logic . . . . . . . . . . . . . . . ...
Diagnosis Procedure . . . . . . . . . . . ...
B1082 SEAT BELT PRE-TENSIONER RH . ...
DTC Logic . . . . . . . . . . . . . . . ...
Diagnosis Procedure . . . . . . . . . . . ...
B1083 SEAT BELT PRE-TENSIONER RH . ...
DTC Logic . . . . . . . . . . . . . . . ...
Diagnosis Procedure . . . . . . . . . . . ...
B1084 SEAT BELT PRE-TENSIONER RH . ...
DTC Logic . . . . . . . . . . . . . . . ...
Diagnosis Procedure . . . . . . . . . . . ...
B1086 SEAT BELT PRE-TENSIONER LH . ...
DTC Logic . . . . . . . . . . . . . . . ...
Diagnosis Procedure . . . . . . . . . . . ...
B1087 SEAT BELT PRE-TENSIONER LH . ...
DTC Logic . . . . . . . . . . . . . . . ...
Diagnosis Procedure . . . . . . . . . . . ...
B1088 SEAT BELT PRE-TENSIONER LH . ...
DTC Logic . . . . . . . . . . . . . . . ...
Diagnosis Procedure . . . . . . . . . . . ...
B1089 SEAT BELT PRE-TENSIONER LH . ...
DTC Logic . . . . . . . . . . . . . . . ...
Diagnosis Procedure . . . . . . . . . . . ...
B1090, B1091, B1092, B1093, B1094, B1095
DIAGNOSIS SENSOR UNIT . . . . . . . .
DTC Logic . . . . . . . . . . . . . . . ...
Diagnosis Procedure . . . . . . . . . . . ...
B1106, B1107, B1108, B1109, B1110, B1111
DIAGNOSIS SENSOR UNIT . . . . . . . .
DTC Logic . . . . . . . . . . . . . . . ...
Diagnosis Procedure . . . . . . . . . . . ...
B1113, B1114 SATELLITE SENSOR RH . . .
DTC Logic . . . . . . . . . . . . . . . ...
Diagnosis Procedure . . . . . . . . . . . ...
B1115 SATELLITE SENSOR RH . . . . . ..
DTC Logic . . . . . . . . . . . . . . . ...
Diagnosis Procedure . . . . . . . . . . . ...
B1116 SATELLITE SENSOR RH . . . . . ..
Revision: 2013 February
2012 Murano CrossCabriolet
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DTC Logic . . . . . . . . . . . . . . . ...
Diagnosis Procedure . . . . . . . . . . . ...
B1118, B1119 SATELLITE SENSOR LH . . ..
DTC Logic . . . . . . . . . . . . . . . ...
Diagnosis Procedure . . . . . . . . . . . ...
B1120 SATELLITE SENSOR LH . . . . . ...
DTC Logic . . . . . . . . . . . . . . . ...
Diagnosis Procedure . . . . . . . . . . . ...
B1121 SATELLITE SENSOR LH . . . . . ...
DTC Logic . . . . . . . . . . . . . . . ...
Diagnosis Procedure . . . . . . . . . . . ...
B1122, B1123, B1124, B1125, B1126, B1127
DIAGNOSIS SENSOR UNIT . . . . . . . ..
DTC Logic . . . . . . . . . . . . . . . ...
Diagnosis Procedure . . . . . . . . . . . ...
B1129 SIDE AIR BAG MODULE RH . . . ...
DTC Logic . . . . . . . . . . . . . . . .
Diagnosis Procedure . . . . . . . . . . . .
B1130 SIDE AIR BAG MODULE RH . . . ...
DTC Logic . . . . . . . . . . . . . . . .
Diagnosis Procedure . . . . . . . . . . . .
B1131 SIDE AIR BAG MODULE RH . . . ...
DTC Logic . . . . . . . . . . . . . . . .
Diagnosis Procedure . . . . . . . . . . . .
B1132 SIDE AIR BAG MODULE RH . . . ...
DTC Logic . . . . . . . . . . . . . . . .
Diagnosis Procedure . . . . . . . . . . . .
B1134 SIDE AIR BAG MODULE LH . . . ...
DTC Logic . . . . . . . . . . . . . . . .
Diagnosis Procedure . . . . . . . . . . . .
B1135 SIDE AIR BAG MODULE LH . . . ...
DTC Logic . . . . . . . . . . . . . . . .
Diagnosis Procedure . . . . . . . . . . . .
B1136 SIDE AIR BAG MODULE LH . . . ...
DTC Logic . . . . . . . . . . . . . . . .
Diagnosis Procedure . . . . . . . . . . . .
B1137 SIDE AIR BAG MODULE LH . . . ...
DTC Logic . . . . . . . . . . . . . . . .
Diagnosis Procedure . . . . . . . . . . . .
B1138, B1139, B1140, B1141, B1142, B1143
DIAGNOSIS SENSOR UNIT . . . . . . .
DTC Logic . . . . . . . . . . . . . . . .
Diagnosis Procedure . . . . . . . . . . . .
B1144 DIAGNOSIS SENSOR UNIT . . . . .
DTC Logic . . . . . . . . . . . . . . . .
Diagnosis Procedure . . . . . . . . . . . .
B1154, B1155, B1156, B1157, B1158, B1159
DIAGNOSIS SENSOR UNIT . . . . . . ...
DTC Logic . . . . . . . . . . . . . . . ..
Diagnosis Procedure . . . . . . . . . . . .
B1170, B1171, B1172, B1173, B1174, B1175
DIAGNOSIS SENSOR UNIT . . . . . . ...
DTC Logic . . . . . . . . . . . . . . . ..
Diagnosis Procedure . . . . . . . . . . . .
B1186, B1187, B1188, B1189, B1190, B1191
DIAGNOSIS SENSOR UNIT . . . . . . ...
DTC Logic . . . . . . . . . . . . . . . ..
Diagnosis Procedure . . . . . . . . . . . .
B1202, B1203, B1204, B1205, B1206, B1207
DIAGNOSIS SENSOR UNIT . . . . . . ...
DTC Logic . . . . . . . . . . . . . . . ..
Diagnosis Procedure . . . . . . . . . . . .
B1209 FRONTAL COLLISION DETECTION ..
Description . . . . . . . . . . . . . . . .
DTC Logic . . . . . . . . . . . . . . . ..
Diagnosis Procedure . . . . . . . . . . . .
B1210 SIDE COLLISION DETECTION . . ..
Description . . . . . . . . . . . . . . . .
DTC Logic . . . . . . . . . . . . . . . ..
Diagnosis Procedure . . . . . . . . . . . .
B1211 ROLLOVER DETECTION . . . . ...
Description . . . . . . . . . . . . . . . .
DTC Logic . . . . . . . . . . . . . . . ..
Diagnosis Procedure . . . . . . . . . . . .
B1212, B1213, B1214 SATELLITE SENSOR
RH . . . . . . . . . . . . . . . . .
DTC Logic . . . . . . . . . . . . . . . ..
Diagnosis Procedure . . . . . . . . . . . .
B1215, B1216, B1217 SATELLITE SENSOR
LH . . . . . . . . . . . . . . . . .
DTC Logic . . . . . . . . . . . . . . . ..
Diagnosis Procedure . . . . . . . . . . . .
B1218, B1219, B1220, B1221, B1222, B1223
DIAGNOSIS SENSOR UNIT . . . . . . ...
DTC Logic . . . . . . . . . . . . . . . ..
Diagnosis Procedure . . . . . . . . . . . .
B1234, B1235, B1236, B1237, B1238, B1239
DIAGNOSIS SENSOR UNIT . . . . . . ...
DTC Logic . . . . . . . . . . . . . . . ..
Diagnosis Procedure . . . . . . . . . . . .
B1250, B1251, B1252, B1253, B1254, B1255
DIAGNOSIS SENSOR UNIT . . . . . . ...
DTC Logic . . . . . . . . . . . . . . . ..
Diagnosis Procedure . . . . . . . . . . . .
Revision: 2013 February
2012 Murano CrossCabriolet
SRC-4
B1257 DOOR-MOUNTED CURTAIN AIR BAG
MODULE RH . . . . . . . . . . . . .
Description . . . . . . . . . . . . . . . .
DTC Logic . . . . . . . . . . . . . . . ..
Diagnosis Procedure . . . . . . . . . . . .
B1258 DOOR-MOUNTED CURTAIN AIR BAG
MODULE RH . . . . . . . . . . . . .
Description . . . . . . . . . . . . . . . .
DTC Logic . . . . . . . . . . . . . . . ..
Diagnosis Procedure . . . . . . . . . . . .
B1259 DOOR-MOUNTED CURTAIN AIR BAG
MODULE RH . . . . . . . . . . . . .
Description . . . . . . . . . . . . . . . .
DTC Logic . . . . . . . . . . . . . . . ..
Diagnosis Procedure . . . . . . . . . . . .
B1260 DOOR-MOUNTED CURTAIN AIR BAG
MODULE RH . . . . . . . . . . . . .
Description . . . . . . . . . . . . . . . .
DTC Logic . . . . . . . . . . . . . . . ..
Diagnosis Procedure . . . . . . . . . . . .
B1262 DOOR-MOUNTED CURTAIN AIR BAG
MODULE LH . . . . . . . . . . . . .
Description . . . . . . . . . . . . . . . .
DTC Logic . . . . . . . . . . . . . . . ..
Diagnosis Procedure . . . . . . . . . . . .
B1263 DOOR-MOUNTED CURTAIN AIR BAG
MODULE LH . . . . . . . . . . . . .
Description . . . . . . . . . . . . . . . .
DTC Logic . . . . . . . . . . . . . . . ..
Diagnosis Procedure . . . . . . . . . . . .
B1264 DOOR-MOUNTED CURTAIN AIR BAG
MODULE LH . . . . . . . . . . . . .
Description . . . . . . . . . . . . . . . .
DTC Logic . . . . . . . . . . . . . . . ..
Diagnosis Procedure . . . . . . . . . . . .
B1265 DOOR-MOUNTED CURTAIN AIR BAG
MODULE LH . . . . . . . . . . . . .
Description . . . . . . . . . . . . . . . .
DTC Logic . . . . . . . . . . . . . . . ..
Diagnosis Procedure . . . . . . . . . . . .
B1289 POP-UP ROLL BAR RH . . . . . ..
Description . . . . . . . . . . . . . . . .
DTC Logic . . . . . . . . . . . . . . . ..
Diagnosis Procedure . . . . . . . . . . . .
B1290 POP-UP ROLL BAR RH . . . . . ..
Description . . . . . . . . . . . . . . . .
DTC Logic . . . . . . . . . . . . . . . ..
Diagnosis Procedure . . . . . . . . . . . .
B1291 POP-UP ROLL BAR RH . . . . . ..
Description . . . . . . . . . . . . . . . .
DTC Logic . . . . . . . . . . . . . . . .
Diagnosis Procedure . . . . . . . . . . . .
B1292 POP-UP ROLL BAR RH . . . . . ...
Description . . . . . . . . . . . . . . .
DTC Logic . . . . . . . . . . . . . . . .
Diagnosis Procedure . . . . . . . . . . . .
B1294 POP-UP ROLL BAR LH . . . . . ...
Description . . . . . . . . . . . . . . .
DTC Logic . . . . . . . . . . . . . . . .
Diagnosis Procedure . . . . . . . . . . . .
B1295 POP-UP ROLL BAR LH . . . . . ...
Description . . . . . . . . . . . . . . .
DTC Logic . . . . . . . . . . . . . . . .
Diagnosis Procedure . . . . . . . . . . . .
B1296 POP-UP ROLL BAR LH . . . . . ...
Description . . . . . . . . . . . . . . .
DTC Logic . . . . . . . . . . . . . . . .
Diagnosis Procedure . . . . . . . . . . . .
B1297 POP-UP ROLL BAR LH . . . . . ...
Description . . . . . . . . . . . . . . .
DTC Logic . . . . . . . . . . . . . . . .
Diagnosis Procedure . . . . . . . . . . . .
B1298 POP-UP ROLL BAR . . . . . . . .
Description . . . . . . . . . . . . . . .
DTC Logic . . . . . . . . . . . . . . . .
Diagnosis Procedure . . . . . . . . . . . .
B1336, B1337 SATELLITE SENSOR RH . .
DTC Logic . . . . . . . . . . . . . . . .
Diagnosis Procedure . . . . . . . . . . . .
B1338, B1340, B1341, B1342 SATELLITE
SENSOR RH . . . . . . . . . . . . . .
DTC Logic . . . . . . . . . . . . . . . .
Diagnosis Procedure . . . . . . . . . . . .
B1339 SATELLITE SENSOR RH . . . . . .
DTC Logic . . . . . . . . . . . . . . . .
Diagnosis Procedure . . . . . . . . . . . .
B1343, B1344 SATELLITE SENSOR LH . .
DTC Logic . . . . . . . . . . . . . . . .
Diagnosis Procedure . . . . . . . . . . . .
B1345, B1347, B1348, B1349 SATELLITE
SENSOR LH . . . . . . . . . . . . . .
DTC Logic . . . . . . . . . . . . . . . .
Diagnosis Procedure . . . . . . . . . . . .
B1346 SATELLITE SENSOR LH . . . . . .
DTC Logic . . . . . . . . . . . . . . . .
Diagnosis Procedure . . . . . . . . . . . .
B1350, B1351 SATELLITE SENSOR . . . ..
DTC Logic . . . . . . . . . . . . . . . .
Diagnosis Procedure . . . . . . . . . . . .
Revision: 2013 February
2012 Murano CrossCabriolet
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SYMPTOM DIAGNOSIS . . . . . . .
SRS AIR BAG WARNING LAMP DOES NOT
TURN OFF . . . . . . . . . . . . . .
Diagnosis Procedure . . . . . . . . . . . .
SRS AIR BAG WARNING LAMP DOES NOT
TURN ON . . . . . . . . . . . . . .
Diagnosis Procedure . . . . . . . . . . . .
SRS AIR BAG WARNING LAMP BLINKS . .
Diagnosis Procedure . . . . . . . . . . . .
Revision: 2013 February
2012 Murano CrossCabriolet
SRC-6
< PRECAUTION >
PRECAUTIONS
PRECAUTION
PRECAUTIONS
Precaution for Supplemental Restraint System (SRS) "AIR BAG" and "SEAT BELT
PRE-TENSIONER"
INFOID:0000000007564572
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 “SRS AIR BAG” and “SEAT BELT” of this
Service Manual.
WARNING:
Always observe the following items for preventing accidental activation.
• To avoid rendering the SRS inoperative, which could increase the risk of personal injury or death in
the event of a collision that 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 “SRS AIR BAG”.
• Never use electrical test equipment on any circuit related to the SRS unless instructed to in this Ser-
vice Manual. SRS wiring harnesses can be identified by yellow and/or orange harnesses or harness
connectors.
PRECAUTIONS WHEN USING POWER TOOLS (AIR OR ELECTRIC) AND HAMMERS
WARNING:
Always observe the following items for preventing accidental activation.
• When working near the Air Bag Diagnosis Sensor Unit or other Air Bag System sensors with the
ignition ON or engine running, never 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 3 minutes before performing any service.
Precaution for Battery Service
INFOID:0000000007564573
Before disconnecting the battery, lower both the driver and passenger windows. This will prevent any interfer-
ence between the window edge and the vehicle when the door is opened/closed. During normal operation, the
window slightly raises and lowers automatically to prevent any window to vehicle interference. The automatic
window function will not work with the battery disconnected.
Service Procedure Precautions for Models with a Pop-up Roll Bar
INFOID:0000000007564574
WARNING:
Always observe the following items for preventing accidental activation.
• Risk of passenger injury or death may increase if the pop-up roll bar does not deploy during a roll
over collision. In order to reduce the chance of an incident where the pop-up roll bar is inoperative,
all maintenance must be performed by a NISSAN or INFINITI dealer.
• Before removing and installing the pop-up roll bar component parts and harness, always turn the
ignition switch OFF, disconnect the battery negative terminal, and wait for 3 minutes or more. (The
purpose of this operation is to discharge electricity that is accumulated in the auxiliary power supply
circuit in the air bag diagnosis sensor unit.)
• When repairing, removing, and installing a pop-up roll bar, always refer to SRS AIR BAG and SRS
AIR BAG CONTROL warnings in the Service Manual.
Revision: 2013 February
2012 Murano CrossCabriolet
COMPONENT PARTS
SRC-7
< SYSTEM DESCRIPTION >
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SYSTEM DESCRIPTION
COMPONENT PARTS
Component Parts Location
INFOID:0000000007564575
1.
Combination meter
Refer to
.
2.
Combination switch (spiral cable)
3.
Driver air bag module
4.
Passenger air bag module
5.
Front door satellite sensor LH
6.
Door-mounted curtain air bag mod-
ule LH
7.
Seat belt pre-tensioner LH
8.
Satellite sensor LH
9.
Side air bag module LH
JMHIA2073ZZ
Revision: 2013 February
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SRC-8
< SYSTEM DESCRIPTION >
COMPONENT PARTS
Component Description
INFOID:0000000007564576
10. Occupant Classification System con-
trol unit
11.
Pop-up roll bar
12. Air bag daignosis sensor unit
13. Crash zone sensor
A.
View with door finisher removed
B.
Behind door finisher assembly
C.
Behind center piller lower garnish
D.
View with seatback pad removed
E.
Behind rear seat assembly
F.
Behind center console assembly
G.
Radiator core support assembly
Component
Function
Air bag diagnosis sensor unit
• Detects a collision and supplies power supply for deployment to air bag module and
pre-tensioner seat belt.
• Contains the “G” sensors for both frontal and side collisions and spare battery func-
tion in case of main battery damage in collision.
BCM
Receives the collision detection signal when air bag diagnosis sensor unit detects col-
lision.
Combination meter (air bag warning lamp)
Indicates air bag malfunctioning and deployment by blinking and illuminating air bag
warning lamp.
Combination switch (spiral cable)
Supplies power supply to driver air bag module on steering wheel.
Crash zone sensor
• Transmits signal to air bag diagnosis sensor unit when a frontal collision occurs.
• Crash zone sensor is a G sensor that outputs voltage signal at the time when a ve-
hicle frontal collision that is more than the specified limit is detected.
Door-mounted curtain air bag module LH/RH
• Deploys according to collision judgment of G sensor, pressure sensor, and safing
sensor.
• Receives collision signal from air bag diagnosis sensor unit, ignites, and burns ig-
nition material by electric ignition system, when side collision exceeds setting limit
of the vehicle. Gas is generated by chemical reaction of ignition material, passes
filter, and deploys air bag.
• Air bag module mainly consists of air bag and inflator that deploys air bag.
Driver air bag module
• Receives signal from air bag diagnosis sensor unit and deploys air bag.
• In case of frontal collision where acceleration is more than the specified level, the
ignition materials are ignited by electric ignition system. The system burns the gas
generating materials resulting in a chemical reaction. This generates hot gases that
flow into the air bag through a filter and expand the bag.
Front door satellite sensor LH/RH
• Transmits signal to air bag diagnosis sensor unit when a side collision occurs.
• When air bag diagnosis sensor unit defines both signal voltage of the “G” sensor,
pressure sensor and the safing algorithm to be that of collision which is more than
the specified level, the driving circuit switches on and feeds the electric ignitor of
both the side air bag, curtain air bag and pre-tensioner.
Occupant Classification System control unit
Detects passenger seat occupant and judges whether or not passenger seat air bag
is deployed.
Passenger air bag module
• Receives signal from air bag diagnosis sensor unit and deploys air bag.
• In case of frontal collision where acceleration is more than the specified level, the
ignition materials are ignited by electric ignition system. The system burns the gas
generating materials resulting in a chemical reaction. This generates hot gases that
flow into the air bag through a filter and expand the bag.
Passenger air bag OFF indicator
Indicates whether or not passenger air bag is in the activation mode based on the
judgement of occupant classification system.
Satellite sensor LH/RH
• Transmits signal to air bag diagnosis sensor unit when a side collision occurs.
• When air bag diagnosis sensor unit defines both signal voltage of the “G” sensor,
pressure sensor and the safing algorithm to be that of collision which is more than
the specified level, the driving circuit switches on and feeds the electric ignitor of
both the side air bag and curtain air bag and seat belt pre-tensioner.
Seat belt buckle switch LH/RH
Controls deployment timing depending on the seat belt condition that is fastened or
unfastened.
Revision: 2013 February
2012 Murano CrossCabriolet
COMPONENT PARTS
SRC-9
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Seat belt pre-tensioner LH/RH
• Receives signal from air bag diagnosis sensor unit and deploys seat belt pre-ten-
sioner and lap pre-tensioner.
• In the case of a frontal collision or side collision that exceeds specified impact level,
the air bag diagnosis sensor unit detects the deceleration caused by collision. It re-
strains the passenger with seat belt easing the stress on passengers chest with
load limiter.
Side air bag module LH/RH
• Receives signal from air bag diagnosis sensor unit and deploys air bag.
• In case of side collision where acceleration is more than the specified level, the ig-
nition materials are ignited by electric ignition system. The system burns the gas
generating materials resulting in a chemical reaction. This generates hot gases that
flow into the air bag through a filter and expand the bag.
Pop-up roll bar
It receives signal from diagnosis sensor unit and deploys.
Component
Function
Revision: 2013 February
2012 Murano CrossCabriolet
SRC-10
< SYSTEM DESCRIPTION >
SYSTEM
SYSTEM
System Diagram
INFOID:0000000007564577
System Description
INFOID:0000000007564578
Supplemental Restraint System (SRS) activates air bag module and seat belt pre-tensioner when it detects a
frontal collision or a side collision that is more than the specified limit.
Together with other safety devices, it reduces the impact that occupant receives when vehicle collision occurs.
Air bag diagnosis sensor unit supplies power supply to air bag module and pre-tensioner seat belt when decel-
eration that is more than the specified limit is detected by G sensor in air bag diagnosis sensor unit, crash
zone sensor, satellite sensor, or front door satellite sensor.
JMHIA2074GB
Revision: 2013 February
2012 Murano CrossCabriolet
SYSTEM
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< SYSTEM DESCRIPTION >
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Air bag module is composed of electric igniter (squib), filter, pyrotechnic material, and gas generating material.
When air bag module receives a signal from air bag diagnosis sensor unit, air bag module ignites pyrotechnic
material using electric igniter (squib) so that gas generating material generates high temperature nitrogen gas.
The gas through filter activates air bag. At the same time, pre-tensioner seat belt receives power supply from
air bag diagnosis sensor unit, gas generator is activated, and then gas is generated.
Balls in pipe are moved according to generated gas pressure and strike pinion gear on ELR shaft.
ELR shaft rotates and retracts seat belt.
AIR BAG DIAGNOSIS SENSOR UNIT FUNCTIONS
Air bag diagnosis sensor unit has the following functions.
• Detects a collision and supplies the energy for deploying air bag and seat belt pre-tensioner.
• Detects and records electrical malfunction in air bag system and seat belt pre-tensioner system, and blinking
air bag warning lamp.
• Detects and records the deployment of air bag and seat belt pre-tensioner, and turns ON air bag warning
lamp.
• Indicates malfunctioning portion via the number of blinks from the air bag warning lamp in the diagnosis
mode.
• Indicates the malfunction record via CONSULT.
• Suppresses the deployment of passenger air bag when passenger seat is empty or occupied by child or
child-seat.
• When passenger seat is occupied by child or child seat, turns ON passenger air bag OFF indicator.
• When judges that passenger seat is occupied by a adult or a child and passenger seat belt is not fasten,
turns ON seat belt warning lamp. Further information for the seat belt warning system.
COLLISION MODES
The operation of SRS is different depending on the collision modes applications. For example, the driver air
bag module, passenger air bag module, and seat belt pre-tensioner are activated in a frontal collision or side
collision.
SRS configurations that are activated for the following collision modes.
×
: Apply —: Not apply
OCCUPANT CLASSIFICATION SYSTEM
Occupant Classification System has the following functions.
• Suppresses the deployment of passenger air bag when passenger seat is empty, or when occupied by child
and child-seat.
• Turns on front passenger air bag OFF indicator when passenger seat is occupied by child-seat and child.
• Indicates malfunction portion via the number of blinks from the air bag warning lamp in the diagnosis mode.
• Indicates the malfunctioning record via CONSULT.
NOTE:
Operation of air bag diagnosis sensor unit when air bag diagnosis sensor unit receives information from Occu-
pant Classification System.
SRS configuration
Frontal collision
Left side collision
Right side collision
Roll over
Driver air bag module
×
—
—
—
Passenger air bag module
×
—
—
—
Seat belt pre-tensioner LH
×
×
—
×
Seat belt pre-tensioner RH
×
—
×
×
Side air bag module LH
—
×
—
—
Side air bag module RH
—
—
×
—
Door-mounted curtain air bag module LH
—
×
—
×
Door-mounted curtain air bag module RH
—
—
×
×
Pop-up roll bar LH
—
—
—
×
Pop-up roll bar RH
—
—
—
×
Revision: 2013 February
2012 Murano CrossCabriolet
SRC-12
< SYSTEM DESCRIPTION >
SYSTEM
Status
(front passenger seat)
Passenger air bag
Front passenger air
bag OFF indicator
Air bag warning lamp
Seat belt warning lamp
(when front passenger
seat is unbuckled)
Empty
Suppress
OFF
OFF
OFF
Child/ child-seat
Suppress
ON
OFF
ON
Adult
Enable to deploy
OFF
OFF
ON
Malfunction
Suppress
ON
Blinking
OFF
Revision: 2013 February
2012 Murano CrossCabriolet
DIAGNOSIS SYSTEM (AIR BAG)
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DIAGNOSIS SYSTEM (AIR BAG)
Description
INFOID:0000000007564579
CAUTION:
• Never use electrical test equipment on any circuit related to the SRS unless instructed in this Ser-
vice Manual. SRS wiring harnesses can be identified by yellow and/or orange harnesses or harness
connectors.
• Never repair, splice or modify the SRS wiring harness. If the harness is damaged, replace it with a
new one.
• Keep ground portion clean.
DIAGNOSIS FUNCTION
• The SRS self-diagnostic results can be read with air bag warning lamp and/or CONSULT.
• The user mode is exclusively prepared for the customer (driver). This mode warns the driver of a system
malfunction through the operation of the air bag warning lamp.
• The diagnosis mode allows the technician to locate and inspect the malfunctioning part.
• The mode applications for the air bag warning lamp and CONSULT are as per the following items.
×
: Application, —: Not application
On Board Diagnosis Function
INFOID:0000000007564580
ON-BOARD DIAGNOSIS
There are two self diagnosis functions with air bag warning lamp per the following items.
• USER MODE
• DIAGNOSIS MODE
METHOD OF STARTING
• Diagnosis mode changes from user mode to diagnosis mode when changing operation is performed.
• In user mode, when SRS air bag warning lamp is not blinking, changing to diagnosis mode by ignition switch
operation is not possible.
• In diagnosis mode, when repair is complete and system is normal, the mode changes to user mode when
ignition switch is turned from OFF to ON.
Procedure to Change Diagnosis Mode
1.
Turn ignition switch from OFF to ON.
2.
SRS air bag lamp turns ON for 7 second and turns OFF, then turn ignition switch OFF within 1second after
the lamp turns OFF.
3.
After turning ignition switch OFF, wait for 3 seconds or more.
4.
Repeat operation 1 to 3 for 2 times so that operation 1 to 3 is repeated for 3times in total.
5.
Turn ignition switch from OFF to ON. Diagnosis mode changes.
USER MODE
In USER MODE, air bag warning lamp on combination meter blinks when a malfunction is detected and warns
the customer (driver).
How to Read Air Bag Warning Lamp
1.
Turn the ignition switch from OFF to ON, and check that the air bag warning lamp blinks.
2.
Compare the air bag warning lamp blinking pattern with the examples.
Air Bag Warning Lamp Examples
Diagnosis tool
User mode
Diagnosis mode
Air bag warning lamp
×
×
CONSULT
–
×
Revision: 2013 February
2012 Murano CrossCabriolet
SRC-14
< SYSTEM DESCRIPTION >
DIAGNOSIS SYSTEM (AIR BAG)
DIAGNOSIS MODE
The diagnosis mode can only be switched when a malfunction is detected in the user mode. Malfunctioning
system is indicated according to blinking pattern of air bag warning lamp.
How to Read Air Bag Warning Lamp
1.
Follow the procedures of “PROCEDURE TO CHANGE DIAGNOSIS MODE”, and switch to the diagnosis
mode.
2.
Turn ignition switch ON. Check the blinking pattern of air bag warning lamp.
There are 2 blinking patterns for the air bag warning lamp as per the following items.
• Front air bag system: 3 second blink followed by a 0.5 second blink repeated.
Air bag warning lamp operation (user mode)
SRS condition
Reference item
• No malfunction is detected
• No further action is necessary
—
• The system is malfunctioning
• Self diagnostic result is not erased af-
ter repair
Erase “Self Diagnostic Result”
Refer to
, How to Erase Self-diagnostic
Result
Low battery voltage (Less than 9 V) or
high battery voltage (more than 16V)
Check “Cause of Warning Lamp”
with CONSULT
Refer to
Occupant Classification function is dis-
abled
Refer to
Intermittent malfunction is detected in
the past
Go to
GI-40, "Intermittent Incident"
• Air bag is deployed
• Seat belt pre-tensioner is deployed
Go to
or
• Air bag diagnosis sensor unit is mal-
functioning
• Air bag power supply circuit is mal-
functioning
• Air bag warning lamp circuit is mal-
functioning
Go to
• Air bag diagnosis sensor unit is mal-
functioning
• Air bag warning lamp circuit is mal-
functioning
Go to
SHIA0011E
SHIA0012E
SHIA0013E
SHIA0014E
Revision: 2013 February
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DIAGNOSIS SYSTEM (AIR BAG)
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• Side air bag system: Two 1.5 second blinks followed by a 0.5 second blink repeated.
Front air bag system
Side air bag system
How to Erase Self-diagnostic Result
After a malfunction is repaired, turn the ignition switch OFF for one second or more, then turn ignition switch
ON. The diagnosis mode returns to the user mode. At that time the self-diagnostic result is cleared.
EXAMPLE OF AIR BAG WARNING LAMP OPERATION IN THE DIAGNOSIS MODE
System Normal
When system is normal.
Single System Malfunction
• Front air bag system
Number of 0.5 second blinks
Malfunctioning items
0
• Self-diagnostic result is not erased after repair
• Intermittent malfunction is detected in the past
1
Seat belt pre-tensioner RH
2
Driver air bag module
3
Seat belt pre-tensioner LH
5
Occupant detction system control unit
6
Crash zone sensor
7
Air bag diagnosis sensor unit
8
Passenger air bag module
11
Front passenger air bag OFF indicator
17
Air bag diagnosis sensor unit
Number of 0.5-second blinks
Malfunctioning items
1
Side air bag module RH
2
Side air bag module LH
3
Satellite sensor RH
4
Satellite sensor LH
5
Curtain air bag module RH
6
Curtain air bag module LH
9
Front door satellite sensor RH
10
Front door satellite sensor LH
14
Door-mounted curtain air bag module RH
15
Door-mounted curtain air bag module LH
18
Pop-up roll bar RH
19
Pop-up roll bar LH
20
Front door satellite sensor LH/RH
JMHIA0945GB
Revision: 2013 February
2012 Murano CrossCabriolet
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