Nissan Note E12. Instruction — part 576
DIAGNOSIS SYSTEM (AIR BAG)
SRC-9
< SYSTEM DESCRIPTION >
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DIAGNOSIS SYSTEM (AIR BAG)
Description
INFOID:0000000009518933
CAUTION:
• Never use electrical test equipment on any circuit related to the SRS unless instructed in this Ser-
vice Instruction. 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:0000000009518934
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 turning ON, 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 seconds and turns OFF, then turn ignition switch OFF within 2 seconds
after the lamp turns OFF.
NOTE:
When in Diagnosis Mode, the air bag warning lamp may illuminate for more than 7 seconds after the igni-
tion switch is turned ON. If this is the case, the ignition switch must still be cycled OFF after 7 seconds.
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 3 times 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 turning ON 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 turns ON.
2. Compare the air bag warning lamp operation pattern with the examples.
Air Bag Warning Lamp Examples:
Diagnosis tool
User mode
Diagnosis mode
Air bag warning lamp
×
×
CONSULT
–
×
SRC-10
< SYSTEM DESCRIPTION >
DIAGNOSIS SYSTEM (AIR BAG)
Air bag warning lamp flashing pattern (User Mode)
DIAGNOSIS MODE
NOTE:
Diagnosis Mode can not be entered if a malfunction is not 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 more times (3 times total).
5. Turn ignition switch ON.
SRS is now in Diagnosis Mode. Refer to
Warning lamp
SRS condition
Reference item
• No malfunction is detected.
• No further action is necessary.
—
The system is malfunctioning and
needs to be repaired.
Refer to
or
• Air bag is deployed.
• Seat belt pre-tensioner is deployed.
or
SR-7, "For Side and Rollover Col-
.
• Air bag diagnosis sensor unit is mal-
functioning.
• Air bag power supply circuit is mal-
functioning.
• SRS air bag warning lamp circuit is
malfunctioning.
Refer to
• Air bag diagnosis sensor unit is mal-
functioning.
• Air bag warning lamp circuit is mal-
functioning.
Refer to
SHIA0011E
SHIA0012E
SHIA0013E
SHIA0014E
DIAGNOSIS SYSTEM (AIR BAG)
SRC-11
< SYSTEM DESCRIPTION >
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Trouble Diagnosis with CONSULT
INFOID:0000000009518935
1. Connect CONSULT.
2. DTC is displayed on SELF-DIAG RESULTS.
NOTE:
If a malfunction is not detected on SELF-DIAG RESULTS [CURRENT], but a malfunction is detected during
SRS Operation Check, the following cases may exist:
• SELF-DIAG [PAST] memory might not be erased. Refer to
SRC-11, "Trouble Diagnosis with CONSULT"
• SRS system malfunctions intermittently. Refer to
SRC-24, "Inspection Procedure"
DIAGNOSIS MODE
1. Connect CONSULT.
2. If no DTCs are detected on “SELF-DIAG RESULTS [CURRENT]”, repair of SRS is completed. Go to step
4.
If any DTCs are detected on “SELF-DIAG RESULTS [CURRENT]”, the malfunction has not been repaired
completely or another malfunction is being detected. Perform SRS Operation Check again. Refer to
9, "On Board Diagnosis Function"
3. Touch “ERASE”.
NOTE:
Touching “ERASE” will clear the SRS memory of the malfunction (“SELF-DIAG [PAST]”). If “SELF-
DIAG [PAST]” is not erased, User Mode may show the previous system malfunction even if the
malfunction has been repaired completely.
4. Check that no malfunction is detected in “SELF-DIAG [PAST]”.
5. Exit Diagnosis Mode and disconnect the CONSULT.
6. Perform SRS Operation Check. Refer to
SRC-9, "On Board Diagnosis Function"
SRS HISTORY CHECK
1. Check repair history of the SRS. If no repairs have been made, perform
. If repairs have been made, GO TO step 2.
2. Erase ”SELF-DIAG [PAST]” after repair. Refer to
SRC-11, "Trouble Diagnosis with CONSULT"
CONSULT Function (AIR BAG)
INFOID:0000000009518939
CONSULT can display each diagnostic item using the diagnostic test modes shown following.
Diagnostic Test Mode
Diagnostic Item
Description
Self Diagnostic Result
SELF-DIAG RESULT [CURRENT]
A current Self-diagnosis result (also indicated by the number of
warning lamp flashes in the Diagnosis mode) is displayed on the
CONSULT screen in real time. This refers to a malfunctioning part
requiring repairs.
Data Monitor
DATA MONITOR
Displays air bag diagnosis sensor unit input/output data in real time.
ECU Identification
ECU DISCRIMINATED NO.
Air bag diagnosis sensor unit ECU discriminated number (identifica-
tion number) or part number is displayed. Air bag diagnosis sensor
unit has individual ECU discriminated number (identification num-
ber) or part number based on model and equipment.
Trouble Diagnostic Record
TROUBLE DIAG RECORD [PAST]
With TROUBLE DIAG RECORD, diagnosis results previously
erased by a reset operation can be displayed on the CONSULT
screen.
SRC-12
< ECU DIAGNOSIS INFORMATION >
DIAGNOSIS SENSOR UNIT
ECU DIAGNOSIS INFORMATION
DIAGNOSIS SENSOR UNIT
DTC Index
INFOID:0000000009015647
DTC
Diagnostic item
Explanation
Reference page
—
NO DTC IS DETECTED.
When malfunction is
indicated by the “AIR
BAG” warning lamp
in the user mode
Low battery voltage (Less than 9 V)
or High battery voltage (more than
16 V)
—
Self-diagnostic result is not erased
after repair
—
Intermittent malfunction is detected
in the past
—
No malfunction is detected
—
B1033
B1034
CRASH ZONE SEN
[UNIT FAIL]
Crash zone sensor is malfunctioning.
B1035
CRASH ZONE SEN
[COMM FAIL]
Crash zone sensor is malfunctioning.
B1049
DRIVER AIRBAG MODULE
[OPEN]
Driver air bag module circuit is open (including the spiral
cable).
B1050
DRIVER AIRBAG MODULE
[VB-SHORT]
Driver air bag module circuit is shorted to power supply
circuit (including the spiral cable).
B1051
DRIVER AIRBAG MODULE
[GND-SHORT]
Driver air bag module circuit is shorted to ground (including
the spiral cable).
B1052
DRIVER AIRBAG MODULE
[SHORT]
Driver air bag module circuits are shorted to each other
(including spiral cable).
B1065
ASSIST A/B MODULE
[OPEN]
Passenger air bag module circuit is open.
B1066
ASSIST A/B MODULE
[VB-SHORT]
Passenger air bag module circuit is shorted to power
supply circuit.
B1067
ASSIST A/B MODULE
[GND-SHORT]
Passenger air bag module circuit is shorted to ground.
B1068
ASSIST A/B MODULE
[SHORT]
Passenger air bag module circuits are shorted to each
other.
B1081
PRE-TEN FRONT RH
[OPEN]
Seat belt pre-tensioner RH circuit is open.
B1082
PRE-TEN FRONT RH
[VB-SHORT]
Seat belt pre-tensioner RH circuit is shorted to power
supply circuit.
B1083
PRE-TEN FRONT RH
[GND-SHORT]
Seat belt pre-tensioner RH circuit is shorted to ground.
B1084
PRE-TEN FRONT RH
[SHORT]
Seat belt pre-tensioner RH circuits are shorted to each
other.
B1086
PRE-TEN FRONT LH
[OPEN]
Seat belt pre-tensioner LH circuit is open.
B1087
PRE-TEN FRONT LH
[VB-SHORT]
Seat belt pre-tensioner LH circuit is shorted to power
supply circuit.
B1088
PRE-TEN FRONT LH
[GND-SHORT]
Seat belt pre-tensioner LH circuit is shorted to ground.
B1089
PRE-TEN FRONT LH
[SHORT]
Seat belt pre-tensioner LH circuits are shorted to each
other.
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