
SRS-6
< SYMPTOM DIAGNOSIS >
SUPPLEMENTAL RESTRAINT SYSTEM (SRS)
Direct-connect SRS Component Connectors
INFOID:0000000001703914
The following SRS components use direct-connect style harness connectors.
• Driver air bag module
• Passenger air bag module
• LH side curtain air bag module
• RH side curtain air bag module
• Front LH seat belt pre-tensioner
• Front RH seat belt pre-tensioner
Always pull up to release the locking tab prior to removing connector from SRS component.
Always push down to lock the locking tab after installing connector to
SRS component.  When locked, the locking tab is level with the con-
nector housing.
WHIA0103E 

TROUBLE DIAGNOSIS
SRS-9
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SRS Component Parts LocationINFOID:0000000001703916
1. Crash zone sensor 2. Spiral cable 3. Front passenger air bag off indicator
4. Front LH seat belt pre-tensioner
LH side air bag (satellite) sensor5. Air bag diagnosis sensor unit 6. Front LH side air bag module
7. Seat belt buckle switch (LH)
Seat belt buckle switch (RH)8. Occupant classification system control 
unit
Occupant classification system sensor9. Front RH seat belt pre-tensioner
RH side air bag (satellite) sensor
Belt tension sensor
10. Front RH side air bag module 11. RH side curtain air bag module 12. LH side curtain air bag module
13. Front passenger air bag module 14. Driver air bag module
WHIA0329E 

TROUBLE DIAGNOSIS
SRS-19
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Air bag warning lamp examples
Trouble Diagnosis with CONSULT-IIIINFOID:0000000001703922
DIAGNOSTIC PROCEDURE 2
Diagnostic code is displayed on "SELF-DIAG [CURRENT]".
If no malfunction is detected on "SELF-DIAG [CURRENT]", but malfunction is detected in "SRS Operation
Check", the following cases may exist:
• "SELF-DIAG [PAST]" memory might not be erased.
• The SRS system malfunctions intermittently.
Refer to "DIAGNOSTIC PROCEDURE 4"
“AIR BAG” warning lamp operation-User mode- SRS condition Reference item
• No malfunction is detected.
• No further action is necessary.—
• The system is malfunctioning and 
needs to be repaired as indicated.Go to SRS-19, "
Trouble Diagnosis 
with CONSULT-III" with CONSULT-
III or SRS-27, "
Trouble Diagnosis 
without CONSULT-III" without CON-
SULT-III.
• Air bag is deployed.
• Seat belt pre-tensioner is deployed.Go to SRS-46
.
• 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 SRS-30, "
Trouble Diagnosis: 
"AIR BAG" Warning Lamp Does Not 
Turn Off".
• Air bag diagnosis sensor unit is mal-
functioning.
• Air bag warning lamp circuit is mal-
functioning.Go to SRS-31, "
Trouble Diagnosis: 
"AIR BAG" Warning Lamp Does Not 
Turn On".
SHIA0011E
SHIA0012E
SHIA0013E
SHIA0014E 
![NISSAN TIIDA 2008  Service Repair Manual TROUBLE DIAGNOSIS
SRS-21
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SIDE MODULE RH
[OPEN]
[B1129]Front RH side air bag module circuit is open. 1. Visually check the wiring harness 
connect NISSAN TIIDA 2008  Service Repair Manual TROUBLE DIAGNOSIS
SRS-21
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SIDE MODULE RH
[OPEN]
[B1129]Front RH side air bag module circuit is open. 1. Visually check the wiring harness 
connect](/manual-img/5/57399/w960_57399-2654.png)
TROUBLE DIAGNOSIS
SRS-21
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SIDE MODULE RH
[OPEN]
[B1129]Front RH side air bag module circuit is open. 1. Visually check the wiring harness 
connection.
2. Replace the harness if it has visi-
ble damage.
3. Replace front RH seat back as-
sembly (front RH side air bag 
module).
4. Replace the air bag diagnosis 
sensor unit.
5. Replace the related harness. SIDE MODULE RH
[VB-SHORT]
[B1130]Front RH side air bag module circuit is shorted to some power 
supply circuit.
SIDE MODULE RH
[GND-SHORT]
[B1131]Front RH side air bag module circuit is shorted to ground.
SIDE MODULE RH
[SHORT]
[B1132]Front RH side air bag module circuits are shorted to each oth-
er.
SATELLITE SENS LH
[UNIT FAIL]
[ B 111 8 ]  o r  [ B 111 9 ]
SATELLITE SENS LH
[COMM FAIL]
[B1120]LH side air bag (satellite) sensor 1. Visually check the wiring harness 
connection.
2. Replace the harness if it has visi-
ble damage.
3. Replace the LH side air bag (sat-
ellite) sensor.
4. Replace the air bag diagnosis 
sensor unit.
5. Replace the related harness.
SATELLITE SENS RH
[UNIT FAIL]
[ B 111 3 ]  o r  [ B 111 4 ]
SATELLITE SENS RH
[COMM FAIL]
[ B 111 5 ]RH side air bag (satellite) sensor 1. Visually check the wiring harness 
connection.
2. Replace the harness if it has visi-
ble damage.
3. Replace the RH side air bag (sat-
ellite) sensor.
4. Replace the air bag diagnosis 
sensor unit.
5. Replace the related harness.
PRE-TEN FRONT LH
[OPEN]
[B1086]The circuit for front LH seat belt pre-tensioner is open.  1. Visually check the wiring harness 
connections.
2. Replace the harness if it has visi-
ble damage.
3. Replace front LH seat belt pre-
tensioner.
4. Replace the air bag diagnosis 
sensor unit.
5. Replace the related harness. PRE-TEN FRONT LH
[VB-SHORT]
[B1087]The circuit for front LH seat belt pre-tensioner is shorted to 
some power supply circuit.
PRE-TEN FRONT LH
[GND-SHORT]
[B1088]The circuit for front LH seat belt pre-tensioner is shorted to 
ground.
PRE-TEN FRONT LH
[SHORT]
[B1089]The circuits for the front LH seat belt pre-tensioner are shorted 
to each other.
PRE-TEN FRONT RH
[OPEN]
[B1081]The circuit for front RH seat belt pre-tensioner is open. 1. Visually check the wiring harness 
connections.
2. Replace the harness if it has visi-
ble damage.
3. Replace front RH seat belt pre-
tensioner.
4. Replace the air bag diagnosis 
sensor unit.
5. Replace the related harness. PRE-TEN FRONT RH
[VB-SHORT]
[B1082]The circuit for front RH seat belt pre-tensioner is shorted to 
some power supply circuit.
PRE-TEN FRONT RH
[GND-SHORT]
[B1083]The circuit for front RH seat belt pre-tensioner is shorted to 
ground.
PRE-TEN FRONT RH
[SHORT]
[B1084]The circuits for the front RH seat belt pre-tensioner are short-
ed to each other. Diagnostic item ExplanationRepair order
Recheck SRS at each replacement 
![NISSAN TIIDA 2008  Service Repair Manual SRS-22
< SYMPTOM DIAGNOSIS >
TROUBLE DIAGNOSIS
CURTAIN MODULE LH
[OPEN]
[B1150]The LH side curtain air bag module circuit is open. 1. Visually check the wiring harness 
connection.
2. Replace the harn NISSAN TIIDA 2008  Service Repair Manual SRS-22
< SYMPTOM DIAGNOSIS >
TROUBLE DIAGNOSIS
CURTAIN MODULE LH
[OPEN]
[B1150]The LH side curtain air bag module circuit is open. 1. Visually check the wiring harness 
connection.
2. Replace the harn](/manual-img/5/57399/w960_57399-2655.png)
SRS-22
< SYMPTOM DIAGNOSIS >
TROUBLE DIAGNOSIS
CURTAIN MODULE LH
[OPEN]
[B1150]The LH side curtain air bag module circuit is open. 1. Visually check the wiring harness 
connection.
2. Replace the harness if it has visi-
ble damage.
3. Replace LH side curtain air bag 
module.
4. Replace the air bag diagnosis 
sensor unit.
5. Replace the related harness. CURTAIN MODULE LH
[VB-SHORT]
[B1151]The LH side curtain air bag module circuit is shorted to some 
power supply circuits.
CURTAIN MODULE LH
[GND-SHORT]
[B1152]The LH side curtain air bag module circuit is shorted to 
ground.
CURTAIN MODULE LH
[SHORT]
[B1153]The circuits for the LH side curtain air bag module are shorted 
to each other.
CURTAIN MODULE RH
[OPEN]
[B1145]The RH side curtain air bag module circuit is open. 1. Visually check the wiring harness 
connection.
2. Replace the harness if it has visi-
ble damage.
3. Replace RH side curtain air bag 
module.
4. Replace the air bag diagnosis 
sensor unit.
5. Replace the related harness. CURTAIN MODULE RH
[VB-SHORT]
[B1146]The RH side curtain air bag module circuit is shorted to some 
power supply circuits.
CURTAIN MODULE RH
[GND-SHORT]
[B1147]The RH side curtain air bag module circuit is shorted to 
ground.
CURTAIN MODULE RH
[SHORT]
[B1148]The circuits for the RH side curtain air bag module are shorted 
to each other.
CONTROL UNIT
[B1XXX]Air bag diagnosis sensor unit is malfunctioning. 1. Visually check the wiring harness 
connection.
2. Replace the air bag diagnosis 
sensor unit.
OCCUPANT SENS C/U
[UNIT FAIL]
[B1017], [B1020] or [B1021]Occupant classification system is malfunctioning. 1. Replace RH front seat cushion/ 
occupant classification system 
control unit assembly.
OCCUPANT SENS C/U
[COMM FAIL]
[B1022]Communication between the occupant classification system 
control unit and air bag diagnosis sensor unit is interrupted.1. Visually check the wiring harness 
connection.
2. Replace the harness if it has visi-
ble damage.
3. Replace RH front seat cushion/ 
occupant classification system 
control unit assembly.
4. Replace the air bag diagnosis 
sensor unit.
5. Replace the related harness.
OCCUPANT SENS 
[UNIT FAIL]
[B1018]Occupant classification sensor is malfunctioning. 1. Replace RH front seat cushion/ 
occupant classification system 
control unit assembly.
BELT TENSION SENS 
[UNIT FAIL]
[B1019]Belt tension sensor is malfunctioning. 1. Visually check the wiring harness 
connection.
2. Replace the harness if it has visi-
ble damage.
3. Replace RH front seat belt as-
sembly.
4. Replace RH front seat cushion/ 
occupant classification system 
control unit assembly. Diagnostic item ExplanationRepair order
Recheck SRS at each replacement 
![NISSAN TIIDA 2008  Service Repair Manual SRS-26
< SYMPTOM DIAGNOSIS >
TROUBLE DIAGNOSIS
PRE-TEN FRONT LH
[OPEN]
[B1086]The circuit for front LH seat belt pre-tensioner is open.  1. Visually check the wiring harness 
connections.
2. Replace t NISSAN TIIDA 2008  Service Repair Manual SRS-26
< SYMPTOM DIAGNOSIS >
TROUBLE DIAGNOSIS
PRE-TEN FRONT LH
[OPEN]
[B1086]The circuit for front LH seat belt pre-tensioner is open.  1. Visually check the wiring harness 
connections.
2. Replace t](/manual-img/5/57399/w960_57399-2659.png)
SRS-26
< SYMPTOM DIAGNOSIS >
TROUBLE DIAGNOSIS
PRE-TEN FRONT LH
[OPEN]
[B1086]The circuit for front LH seat belt pre-tensioner is open.  1. Visually check the wiring harness 
connections.
2. Replace the harness if it has visi-
ble damage.
3. Replace front LH seat belt pre-
tensioner.
4. Replace the air bag diagnosis 
sensor unit.
5. Replace the related harness. PRE-TEN FRONT LH
[VB-SHORT]
[B1087]The circuit for front LH seat belt pre-tensioner is shorted to 
some power supply circuit.
PRE-TEN FRONT LH
[GND-SHORT]
[B1088]The circuit for front LH seat belt pre-tensioner is shorted to 
ground.
PRE-TEN FRONT LH
[SHORT]
[B1089]The circuits for the front LH seat belt pre-tensioner are shorted 
to each other.
PRE-TEN FRONT RH
[OPEN]
[B1081]The circuit for front RH seat belt pre-tensioner is open. 1. Visually check the wiring harness 
connections.
2. Replace the harness if it has visi-
ble damage.
3. Replace front RH seat belt pre-
tensioner.
4. Replace the air bag diagnosis 
sensor unit.
5. Replace the related harness. PRE-TEN FRONT RH
[VB-SHORT]
[B1082]The circuit for front RH seat belt pre-tensioner is shorted to 
some power supply circuit.
PRE-TEN FRONT RH
[GND-SHORT]
[B1083]The circuit for front RH seat belt pre-tensioner is shorted to 
ground.
PRE-TEN FRONT RH
[SHORT]
[B1084]The circuits for the front RH seat belt pre-tensioner are short-
ed to each other.
CURTAIN MODULE LH
[OPEN]
[B1150]The LH side curtain air bag module circuit is open. 1. Visually check the wiring harness 
connection.
2. Replace the harness if it has visi-
ble damage.
3. Replace LH side curtain air bag 
module.
4. Replace the air bag diagnosis 
sensor unit.
5. Replace the related harness. CURTAIN MODULE LH
[VB-SHORT]
[B1151]The LH side curtain air bag module circuit is shorted to some 
power supply circuits.
CURTAIN MODULE LH
[GND-SHORT]
[B1152]The LH side curtain air bag module circuit is shorted to 
ground.
CURTAIN MODULE LH
[SHORT]
[B1153]The circuits for the LH side curtain air bag module are shorted 
to each other.
CURTAIN MODULE RH
[OPEN]
[B1145]The RH side curtain air bag module circuit is open. 1. Visually check the wiring harness 
connection.
2. Replace the harness if it has visi-
ble damage.
3. Replace RH side curtain air bag 
module.
4. Replace the air bag diagnosis 
sensor unit.
5. Replace the related harness. CURTAIN MODULE RH
[VB-SHORT]
[B1146]The RH side curtain air bag module circuit is shorted to some 
power supply circuits.
CURTAIN MODULE RH
[GND-SHORT]
[B1147]
The RH side curtain air bag module circuit is shorted to 
ground.
CURTAIN MODULE RH
[SHORT]
[B1148]The circuits for the RH side curtain air bag module are shorted 
to each other.
CONTROL UNIT
[B1XXX]Air bag diagnosis sensor unit is malfunctioning. 1. Visually check the wiring harness 
connection.
2. Replace the air bag diagnosis 
sensor unit.
OCCUPANT SENS C/U
[UNIT FAIL]
[B1017], [B1020] or [B1021]Occupant classification system is malfunctioning. 1. Replace RH front seat cushion/ 
occupant classification system 
control unit assembly. Diagnostic item ExplanationRepair order
Recheck SRS at each replacement 

TROUBLE DIAGNOSIS
SRS-27
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NOTE:
Follow the procedures in numerical order when performing repairs. Confirm whether the repair has been suc-
cessful using air bag warning lamp or CONSULT-III after each repair. If malfunction is still observed, proceed
to the next step. When malfunction has been eliminated, further repair work is not required.
Trouble Diagnosis without CONSULT-IIIINFOID:0000000001703923
DIAGNOSTIC PROCEDURE 6
Inspect SRS Malfunction Using "AIR BAG" Warning Lamp—Diagnosis Mode
NOTE:
SRS will not enter Diagnosis mode if no malfunction is detected in User mode.
1. Turn ignition switch ON.
2. After “AIR BAG” warning lamp lights for 7 seconds, turn ignition switch OFF within 1 second.
3. Wait more than 3 seconds.
4. Repeat steps 1 to 3 two times.
5. Turn ignition switch ON.
SRS is now in Diagnosis mode.
"AIR BAG" warning lamp operates in Diagnosis mode according to the Warning Lamp Flash Code Chart:
OCCUPANT SENS C/U
[COMM FAIL]
[B1022]Communication between the occupant classification system 
control unit and air bag diagnosis sensor unit is interrupted.1. Visually check the wiring harness 
connection.
2. Replace the harness if it has visi-
ble damage.
3. Replace RH front seat cushion/ 
occupant classification system 
control unit assembly.
4. Replace the air bag diagnosis 
sensor unit.
5. Replace the related harness.
OCCUPANT SENS 
[UNIT FAIL]
[B1018]Occupant classification sensor is malfunctioning. 1. Replace RH front seat cushion/ 
occupant classification system 
control unit assembly.
BELT TENSION SENS 
[UNIT FAIL]
[B1019]Belt tension sensor is malfunctioning. 1. Visually check the wiring harness 
connection.
2. Replace the harness if it has visi-
ble damage.
3. Replace RH front seat belt as-
sembly.
4. Replace RH front seat cushion/ 
occupant classification system 
control unit assembly.
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 visi-
ble damage.
3. Replace front passenger air bag 
off indicator.
4. Replace the air bag diagnosis 
sensor unit.
5. Replace the related harness.
FRONTAL COLLISION
DETECTION
[B1209]Driver and front passenger air bag modules are deployed. Refer to SRS-46
.
SIDE COLLISION
DETECTION
[B1210]Side or curtain air bag modules are deployed. Diagnostic item ExplanationRepair order
Recheck SRS at each replacement 

TROUBLE DIAGNOSIS
SRS-31
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1.CHECK CONDITION OF AIR BAG MODULE
Inspect for any deployed air bag modules or seat belt pre-tensioners.
Are any air bag modules or seat belt pre-tensioners deployed?
Yes >> Refer to SRS-46.
No >> GO TO 2.
2.CHECK THE AIR BAG FUSE
Check 10A fuse [No. 1, located in the fuse block (J/B)].
Refer to PG-3
.
OK or NG
OK >> GO TO 4.
NG >> GO TO 3.
3.CHECK AIR BAG FUSE AGAIN
Replace 10A fuse [No. 1, located in the fuse block (J/B)] and turn ignition switch ON.
Does the fuse blow again?
Yes >> Repair harness.
No >> Inspection End.
4.CHECK AIR BAG DIAGNOSIS SENSOR UNIT
Connect CONSULT-III and touch “START”.
Is 
“AIR BAG” displayed on CONSULT-III?
Yes >> GO TO 5.
No >> Visually inspect the air bag diagnosis sensor unit harness connections. If the connections are OK,
replace the air bag diagnosis sensor unit.  Refer to SRS-44, "
Removal and Installation".
5.CHECK HARNESS CONNECTION
Check for loose connections between the combination meter and the air bag diagnosis sensor unit.
OK or NG
OK >> Replace air bag diagnosis sensor unit.  Refer to SRS-44, "Removal and Installation".
NG >> Properly connect the combination meter and air bag diagnosis sensor unit harness connectors. If
“AIR BAG” warning lamp still does not turn off, replace the wiring harness.
Trouble Diagnosis: "AIR BAG" Warning Lamp Does Not Turn OnINFOID:0000000001703925
DIAGNOSTIC PROCEDURE 8
1.CHECK METER FUSE
Check the 10A fuse [No. 13, located in the fuse block (J/B)] .
Refer to PG-3
.
OK or NG
OK >> GO TO 3.
NG >> GO TO 2.
2.REPLACE METER FUSE AND CHECK AGAIN
Replace 10A fuse [No. 13, located in the fuse block (J/B)] and turn ignition switch ON.
Does the fuse blow again?
Yes >> Replace harness.
No >> Inspection End.
3.CHECK HARNESS CONNECTIONS BETWEEN AIR BAG DIAGNOSIS SENSOR UNIT AND COMBINA-
TION METER
Inspect the harness and connectors between the air bag diagnosis sensor unit and the combination meter.
Do the harness or connectors have any visible damage?
Yes >> Replace harness.