Infiniti FX35, FX50 (S51). Manual — part 1714
DIAGNOSIS SYSTEM (AIRBAG)
SRC-21
< SYSTEM DESCRIPTION >
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After selecting “AIR BAG” on the “SELECT SYSTEM” screen, User mode automatically changes to Diagnosis
mode.
From Diagnosis Mode to User Mode
To return to User mode from Diagnosis mode, touch the “BACK” key of CONSULT-III until “SELECT SYSTEM”
appears, then diagnosis mode automatically changes to User mode.
DIAGNOSIS MODE FOR CONSULT-III
HOW TO ERASE SELF-DIAGNOSTIC RESULTS
• “Self Diagnostic Result”
A current self-diagnosis result is displayed on CONSULT-III screen in real time.
After the malfunction is repaired completely, no malfunction is detected on “Self Diagnostic Result”.
• “SELF-DIAG [PAST]”
Return to “Self Diagnostic Result” CONSULT-III screen by touching the “BACK” key of CONSULT-III and
select “Self Diagnostic Result” in SELECT DIAG MODE. Touch “ERASE” in “Self Diagnostic Result” mode.
NOTE:
If the memory of the malfunction in “SELF-DIAG [PAST]” is not erased, the user mode shows the system
malfunction by the operation of the warning lamp even if the malfunction is repaired completely.
• “TROUBLE DIAG RECORD”
The memory of “TROUBLE DIAG RECORD” cannot be erased.
Diagnosis mode
Description
Ecu Identification
Air bag diagnosis sensor unit ECU discriminated number (identification num-
ber) is displayed. Air bag diagnosis sensor unit has individual ECU discriminat-
ed number (identification number) based on model and equipment.
Self Diagnostic Result
The current self diagnosis results (also indicated with the number of air bag
warning lamp blinks in the diagnosis mode) are displayed on CONSULT-III
screen in real time. This refers to a malfunctioning part requiring repairs.
Refer to
Function Test
CAR COMPUTER DIAG.
Test result is indicated using “OK” or “NG” so that the customer recognizes eas-
ily.
Special function
SELF-DIAG [PAST]
Diagnosis results previously stored in the memory are displayed on CONSULT-
III screen. The stored results are not erased until memory erasing is executed.
TROUBLE DIAG RECORD
With TROUBLE DIAG RECORD, diagnosis results previously erased by a re-
set operation can be displayed on CONSULT-III screen.
SRC-22
< SYSTEM DESCRIPTION >
DIAGNOSIS SYSTEM (OCCUPANT DETECTION SYSTEM)
DIAGNOSIS SYSTEM (OCCUPANT DETECTION SYSTEM)
CONSULT-III Function
INFOID:0000000005241060
ZERO POINT RESET DESCRIPTION
This vehicle adopts occupant detection system with a weight detecting method. When replacing, or removing
and installing passenger seat, always perform “zero point rest” so that the vehicle recognizes zero point.
If zero point reset is incomplete, occupant detection sensor does not operate normally.
WORK SUPPORT
Monitor item
Description
Zero point reset function
Perform zero point reset. Refer to
SET : Special Repair Requirement"
.
B1001, B1002, B1003, B1004, B1005 DIAGNOSIS SENSOR UNIT
SRC-23
< DTC/CIRCUIT DIAGNOSIS >
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DTC/CIRCUIT DIAGNOSIS
B1001, B1002, B1003, B1004, B1005 DIAGNOSIS SENSOR UNIT
Description
INFOID:0000000005241061
Checks the entire SRS and displays the malfunction either by illuminating or blinking the air bag warning lamp
on the combination meter. Malfunctioning part can be detected by on board self-diagnosis system and CON-
SULT-III.
OPERATION
It detects a shock that exceeds a specified level and monitors whether the driver and passenger air bags, front
side air bag, side curtain air bag, and pre-tensioner seat belts operate normally.
STRUCTURE
It contains the “G” sensors for both frontal and side collisions and spare battery function in case of main bat-
tery damage in collision.
INSTALLATION
Air bag diagnosis sensor unit is installed under the center console with fixed bolts.
DTC Logic
INFOID:0000000005241062
DTC CONFIRMATION PROCEDURE
1.
CHECK SELF-DIAG RESULT
With CONSULT-III
1.
Turn ignition switch ON.
2.
Perform “AIR BAG” Self Diagnostic Result.
Without CONSULT-III
1.
Turn ignition switch ON.
2.
Check the air bag warning lamp status. Refer to
SRC-16, "Air Bag Warning Lamp Diagnosis"
.
NOTE:
SRS does not enter diagnosis mode if no malfunction is detected in user mode.
Is malfunctioning part detected?
YES
>> Refer to
NO
>> INSPECTION END
Diagnosis Procedure
INFOID:0000000005241063
WARNING:
• Before servicing, turn ignition switch OFF, disconnect battery negative terminal and wait at least 3
minutes. (To discharge backup capacitor.)
• Never use unspecified tester or other measuring device.
1.
CHECK HARNESS CONNECTOR
Check the harness connector.
Is the inspection result normal?
YES
>> GO TO 2.
NO
>> Replace harness connectors.
2.
CHECK WIRING HARNESS
Check the wiring harness externals.
DTC No.
Trouble diagnosis name
DTC detecting condition
Possible cause
B1001
B1002
B1003
B1004
B1005
CONTROL UNIT
Air bag diagnosis sensor unit is mal-
functioning or out of the specification
• Malfunction in air bag diagnosis sen-
sor unit
• Configuration in air bag diagnosis
sensor unit does not match the vehi-
cles specification
SRC-24
< DTC/CIRCUIT DIAGNOSIS >
B1001, B1002, B1003, B1004, B1005 DIAGNOSIS SENSOR UNIT
Is the inspection result normal?
YES
>> GO TO 3.
NO
>> Replace wiring harness.
3.
REPLACE AIR BAG DIAGNOSIS SENSOR UNIT
1.
Replace air bag diagnosis sensor unit. Refer to
2.
Perform DTC confirmation procedure. Refer to
.
Is DTC detected?
YES
>> GO TO 1.
NO
>> INSPECTION END
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