Nissan Pathfinder. Manual — part 1104
B142X COLLISION DETECTION
SRC-101
< DTC/CIRCUIT DIAGNOSIS >
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B142X COLLISION DETECTION
Description
INFOID:0000000009726846
DTC B142X COLLISION DETECTION
The air bag diagnosis sensor unit will set this DTC if it has detected a collision which has resulted in a deploy-
ment of one or more air bags or pre-tensioners. If this DTC is detected after a SRS repair, the air bag diagno-
sis sensor unit has not yet been replaced. This DTC can not be erased.
PART LOCATION
SRC-5, "Component Parts Location"
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DTC Logic
INFOID:0000000009726847
With CONSULT
DTC CONFIRMATION PROCEDURE (With CONSULT)
1.
INSPECTION START
Turn ignition switch ON.
>> GO TO 2.
2.
CHECK SELF-DIAG RESULT
Check for the DTC on CONSULT.
Is the DTC detected?
YES
>> Refer to
SRC-101, "Diagnosis Procedure"
NO
>> Inspection End.
Diagnosis Procedure
INFOID:0000000009726848
SR-7, "For Side and Rollover Collision"
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CONSULT name
DTC
DTC detecting condition
Repair order
FRONTAL COLLISION DETECTION
B1421
Frontal collision detected. Driver and/or
front passenger air bag modules are de-
ployed.
Refer to
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SIDE COLLISION DETECTION
B1422
Side collision detected. Curtain air bag
module and seat belt pre-tensioner are
deployed.
Refer to
SRC-102
< DTC/CIRCUIT DIAGNOSIS >
B14XX AIR BAG DIAGNOSIS SENSOR UNIT
B14XX AIR BAG DIAGNOSIS SENSOR UNIT
Description
INFOID:0000000009726831
DTC B14XX AIR BAG DIAGNOSIS SENSOR UNIT
The air bag diagnosis sensor unit will run self diagnostics when the ignition switch is turned ON. It has the
potential to set many diagnostic trouble codes which will conform to the B14XX format, but will not match any
other SRS diagnostic trouble codes. Refer to
SRC-16, "CONSULT Function (AIR BAG)"
PART LOCATION
SRC-5, "Component Parts Location"
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DTC Logic
INFOID:0000000009726832
With CONSULT
DTC CONFIRMATION PROCEDURE (With CONSULT)
1.
CHECK SELF-DIAG RESULT
1. Turn ignition switch ON.
2. Check for DTC using CONSULT.
Is the DTC detected?
YES (Current DTC)>>Refer to
SRC-102, "Diagnosis Procedure"
YES (Past DTC)>>GO TO 2.
NO
>> Inspection End.
2.
ERASE SELF-DIAG RESULT
Erase the DTC using CONSULT.
Can the DTC be erased?
YES
>> Inspection End.
NO
>> Refer to
SRC-102, "Diagnosis Procedure"
DTC CONFIRMATION PROCEDURE (Without CONSULT)
1.
CHECK SELF-DIAG RESULT
1. Turn ignition switch ON.
2. Check the air bag warning lamp status. Refer to
SRC-16, "Trouble Diagnosis without CONSULT"
NOTE:
SRS will not enter diagnosis mode if no malfunction is detected in user mode.
Is the DTC detected?
YES
>> Refer to
SRC-102, "Diagnosis Procedure"
NO
>> Inspection End.
Diagnosis Procedure
INFOID:0000000009726833
1.
HARNESS CONNECTOR
Visually inspect all applicable harness connectors for the following:
• Visible damage to connector or terminal
• Loose terminal
• Poor connection
NOTE:
CONSULT name
DTC
DTC detecting condition
Repair order
CONTROL UNIT
[UNIT FAIL]
B14XX
Air bag diagnosis sensor unit is malfunc-
tioning.
Refer to
SRC-102, "Diagnosis Procedure"
AIRBAG DISPOSAL
COMPLETION
B14XX AIR BAG DIAGNOSIS SENSOR UNIT
SRC-103
< DTC/CIRCUIT DIAGNOSIS >
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All harness connectors should be inspected from the air bag diagnosis sensor unit to the end component
(including any in-line connectors).
Is the inspection result normal?
YES
>> GO TO 2.
NO
>> Perform one of the following repairs:
• Visible damage: Replace the harness.
• Loose terminal: Secure the terminal.
• Poor connection: Secure the connection.
2.
CONFIRM DTC
1. Reconnect all harness connectors.
2. Turn ignition switch ON.
3. Check for DTC using CONSULT.
Is DTC still current?
YES
>> GO TO 3.
NO
>> Refer to
GI-49, "Intermittent Incident"
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3.
WIRING HARNESS
Check the wiring harness for visible damage.
NOTE:
The entire wiring harness should be inspected from the air bag diagnosis sensor unit to the end component
(including any in-line connectors).
Is the inspection result normal?
YES
>> GO TO 4.
NO
>> Replace the harness.
4.
CONFIRM DTC
1. Reconnect all harness connectors.
2. Turn ignition switch ON.
3. Check for DTC using CONSULT.
Is DTC still current?
YES
>> GO TO 5.
NO
>> Refer to
GI-49, "Intermittent Incident"
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5.
AIR BAG DIAGNOSIS SENSOR UNIT
1. Replace the air bag diagnosis sensor unit. Refer to
SR-27, "Removal and Installation"
2. Turn ignition switch ON.
3. Check for DTC using CONSULT.
Is DTC still current?
YES
>> GO TO 6.
NO
>> Clear DTC. Inspection End.
6.
RELATED HARNESS
Replace the related harness.
>> END
SRC-104
< SYMPTOM DIAGNOSIS >
SRS AIR BAG WARNING LAMP DOES NOT TURN ON
SYMPTOM DIAGNOSIS
SRS AIR BAG WARNING LAMP DOES NOT TURN ON
AIR BAG Warning Lamp Does Not Turn On
INFOID:0000000009177050
1.
CHECK METER FUSE
Check the 10A fuse [No. 13, located in the fuse block (J/B)].
Is the fuse blown?
YES
>> GO TO 2.
NO
>> GO TO 3.
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 fuse and 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.
NO
>> GO TO 4.
4.
CHECK COMBINATION METER
Disconnect the air bag diagnosis sensor unit harness connectors and turn ignition switch ON.
Does AIR BAG warning lamp turn on?
YES
>> Replace the air bag diagnosis sensor unit. Refer to
SR-27, "Removal and Installation"
.
NO
>> Replace the combination meter. Refer to
MWI-82, "Removal and Installation"
.
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