Infiniti FX35, FX50 (S51). Manual — part 1747
B1215, B1216, B1217 LH1 SAT-SENS
SRC-153
< DTC/CIRCUIT DIAGNOSIS >
C
D
E
F
G
I
J
K
L
M
A
B
SRC
N
O
P
3.
REPLACE SATELLITE SENSOR
1.
Replace LH satellite sensor. Refer to
2.
Perform DTC confirmation procedure. Refer to
Is DTC detected?
YES
>> GO TO 4.
NO
>> INSPECTION END
4.
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
SRC-154
< DTC/CIRCUIT DIAGNOSIS >
B1218, B1219 DIAGNOSIS SENSOR UNIT
B1218, B1219 DIAGNOSIS SENSOR UNIT
Description
INFOID:0000000005241259
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:0000000005241260
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
SRC-119, "Diagnosis Procedure"
NO
>> INSPECTION END
Diagnosis Procedure
INFOID:0000000005241261
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.
Is the inspection result normal?
YES
>> GO TO 3.
DTC No.
Trouble diagnosis name
DTC detecting condition
Possible cause
B1218
B1219
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
B1218, B1219 DIAGNOSIS SENSOR UNIT
SRC-155
< DTC/CIRCUIT DIAGNOSIS >
C
D
E
F
G
I
J
K
L
M
A
B
SRC
N
O
P
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
SRC-156
< ECU DIAGNOSIS INFORMATION >
DIAGNOSIS SENSOR UNIT
ECU DIAGNOSIS INFORMATION
DIAGNOSIS SENSOR UNIT
DTC Index
INFOID:0000000005241262
Diagnostic item
Explanation
Reference page
NO DTC IS DETECT-
ED.
When malfunction is in-
dicated by the “AIR
BAG” warning lamp in
User mode
Low battery voltage (Less than 9 V)
Self-diagnostic result is not erased after
repair
SRC-16, "Air Bag Warning Lamp Diag-
nosis"
.
Intermittent malfunction is detected in
the past
GI-36, "Intermittent Incident"
No malfunction is detected
—
CONTROL UNIT
[B1001-B1015]
Air bag diagnosis sensor unit is malfunctioning or out of the speci-
fied specification
•
.
•
.
•
.
OCCUPANT SENS C/U
[UNIT FAIL]
[B1017]
[B1020]
[B1021]
Malfunction occurs in Occupant Detection System control unit
OCCUPANT SENS
[UNIT FAIL]
[B1018]
Malfunction occurs in Occupant Detection System sensor
OCCUPANT SENS C/U
[COMM FAIL]
[B1022]
Malfunction occurs in Occupant Detection System control unit, cir-
cuit of Occupant Detection System control unit air bag diagnosis
sensor unit, or air bag diagnosis sensor unit
PASS A/B INDCTR CKT
[B1023]
Front passenger air bag OFF indicator circuit is open or shorted to
ground or the circuits are shorted each other
OCS SENSOR
[B1025]
[B1032]
[B1048]
Malfunction occurs in Occupant Detection System control unit, cir-
cuit of Occupant Detection System control unit air bag diagnosis
sensor unit, or air bag diagnosis sensor unit
CONTROL UNIT
[B1026-B1031]
Air bag diagnosis sensor unit is malfunctioning or out of the speci-
fied specification
CRASH ZONE SEN
[UNIT FAIL]
[B1033]
[B1034]
Crash zone sensor is malfunctioning
CRASH ZONE SEN
[COMM FAIL]
[B1035]
[UNMATCH]
[B1036]
Crash zone sensor is malfunctioning or out of the specified speci-
fication
CRASH ZONE SEN1
[B1037]
[B1039]
[B1041]
Crash zone sensor is malfunctioning
CONTROL UNIT
[B1042-B1047]
Air bag diagnosis sensor unit is malfunctioning or out of the speci-
fied specification
DRIVER AIRBAG MOD-
ULE
[OPEN]
[B1049] [B1054]
Driver air bag module circuit is open (including the spiral cable)
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