Nissan Maxima. Instruction — part 1097
SRC-16
< DTC/CIRCUIT DIAGNOSIS >
B1049 – B1052, B1054 – B1057 DRIVER AIRBAG MODULE
DTC/CIRCUIT DIAGNOSIS
B1049 – B1052, B1054 – B1057 DRIVER AIRBAG MODULE
Description
INFOID:0000000009466492
DTC B1049 – B1052, B1054 – B1057 DRIVER AIRBAG MODULE
The driver air bag module is dual stage and wired to the air bag diagnosis sensor unit through the spiral cable.
The air bag diagnosis sensor unit will monitor for opens and shorts in detected lines to the driver air bag mod-
ule including the spiral cable.
PART LOCATION
SRC-7, "SRS Component Parts Location"
DTC Logic
INFOID:0000000009466493
DTC DETECTION LOGIC
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
YES (Past DTC)>>GO TO 2.
NO
>> Inspection End.
2.
ERASE SELF-DIAG RESULT
Erase the DTC using CONSULT.
Can the DTC be erased?
CONSULT name
DTC
DTC detecting condition
Repair order
DRIVER AIRBAG MODULE
[OPEN]
B1049
Driver air bag module circuit (DR1) is open
(including the spiral cable).
1.
Visually check the wiring harness connection.
2.
Replace the harness if it has visible damage.
3.
Inspect spiral cable circuit.
4.
Replace the air bag diagnosis sensor unit.
5.
Replace the driver air bag module.
6.
Replace the related harness.
B1054
Driver air bag module circuit (DR2) is open
(including the spiral cable).
DRIVER AIRBAG MODULE
[VB-SHORT]
B1050
Driver air bag module circuit (DR1) is
shorted to a power supply circuit
(including the spiral cable).
B1055
Driver air bag module circuit (DR2) is
shorted to a power supply circuit
(including the spiral cable).
DRIVER AIRBAG MODULE
[GND-SHORT]
B1051
Driver air bag module circuit (DR1) is
shorted to ground
(including the spiral cable).
B1056
Driver air bag module circuit (DR2) is
shorted to ground
(including the spiral cable).
DRIVER AIRBAG MODULE
[SHORT]
B1052
Driver air bag module circuits (DR1) are
shorted to each other
(including the spiral cable).
B1057
Driver air bag module circuits (DR2) are
shorted to each other
(including the spiral cable).
B1049 – B1052, B1054 – B1057 DRIVER AIRBAG MODULE
SRC-17
< DTC/CIRCUIT DIAGNOSIS >
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YES
>> Inspection End.
NO
>> Refer to
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-14, "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
NO
>> Inspection End.
Diagnosis Procedure
INFOID:0000000009466494
1.
HARNESS CONNECTOR
Visually inspect all applicable harness connectors for the following:
• Visible damage to connector or terminal
• Loose terminal
• Poor connection
NOTE:
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-41, "Intermittent Incident"
.
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.
CHECK SPIRAL CABLE CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect driver air bag module connector and combination switch (spiral cable) connector.
3. Check continuity between driver air bag module harness connector and combination switch (spiral cable)
harness connector.
SRC-18
< DTC/CIRCUIT DIAGNOSIS >
B1049 – B1052, B1054 – B1057 DRIVER AIRBAG MODULE
4. Check continuity between driver air bag module harness connector and ground.
Is the inspection result normal?
YES
>> GO TO 4
NO
>> Replace combination switch (spiral cable). Refer to
SR-15, "Removal and Installation"
.
5.
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 6.
NO
>> Refer to
GI-41, "Intermittent Incident"
.
6.
AIR BAG DIAGNOSIS SENSOR UNIT
1. Replace the air bag diagnosis sensor unit. Refer to
SR-31, "Removal and Installation"
.
2. Turn ignition switch ON.
3. Check for DTC using CONSULT.
Is DTC still current?
YES
>> GO TO 7.
NO
>> Clear DTC. Inspection End.
7.
FRONT DRIVER AIR BAG MODULE
1. Replace the driver air bag module. Refer to
SR-12, "Removal and Installation"
2. Turn ignition switch ON.
3. Check for DTC using CONSULT.
Is DTC still current?
YES
>> GO TO 8.
NO
>> Clear DTC. Inspection End.
8.
RELATED HARNESS
Replace the related harness.
>> END
Driver air bag module
Combination switch (spiral cable)
Continuity
Connector
Terminal
Connector
Terminal
M105
1
M29
28
YES
2
30
M106
3
29
4
30
Driver air bag module
Ground
Continuity
Connector
Terminal
M105
1
NO
2
M106
3
4
B1065 – B1068, B1070 – B1073 PASSENGER AIRBAG MODULE
SRC-19
< DTC/CIRCUIT DIAGNOSIS >
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B1065 – B1068, B1070 – B1073 PASSENGER AIRBAG MODULE
Description
INFOID:0000000009466495
DTC B1065 – B1068, B1070 – B1073 PASSENGER AIR BAG MODULE
The passenger air bag module is dual stage and wired to the air bag diagnosis sensor unit. The air bag diag-
nosis sensor unit will monitor for opens and shorts in detected lines to the passenger air bag module.
PART LOCATION
SRC-7, "SRS Component Parts Location"
DTC Logic
INFOID:0000000009466496
DTC DETECTION LOGIC
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
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
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-14, "Trouble Diagnosis without CONSULT"
NOTE:
CONSULT name
DTC
DTC detecting condition
Repair order
ASSIST A/B MODULE
[OPEN]
B1065
Front passenger air bag module circuit
(AS1) is open.
1.
Visually check the wiring harness connection.
2.
Replace the harness if it has visible damage.
3.
Replace the air bag diagnosis sensor unit.
4.
Replace the front passenger air bag module.
5.
Replace the related harness.
B1070
Front passenger air bag module circuit
(AS2) is open.
ASSIST A/B MODULE
[VB-SHORT]
B1066
Front passenger air bag module circuit
(AS1) is shorted to a power supply circuit.
B1071
Front passenger air bag module circuit
(AS2) is shorted to a power supply circuit.
ASSIST A/B MODULE
[GND-SHORT]
B1067
Front passenger air bag module circuit
(AS1) is shorted to ground.
B1072
Front passenger air bag module circuit
(AS2) is shorted to ground.
ASSIST A/B MODULE
[SHORT]
B1068
Front passenger air bag module circuits
(AS1) are shorted to each other.
B1073
Front passenger air bag module circuits
(AS2) are shorted to each other.
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