Nissan Versa Note. Instruction — part 756
B142A IGNITION VOLTAGE
SRC-87
< DTC/CIRCUIT DIAGNOSIS >
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B142A IGNITION VOLTAGE
Description
INFOID:0000000009761217
DTC B142A IGNITION VOLTAGE
Ignition voltage is supplied to the air bag diagnosis sensor unit when the ignition is in the ON position. The air
bag diagnosis sensor unit will monitor for low or high ignition voltage.
PART LOCATION
SRC-5, "Component Parts Location"
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DTC Logic
INFOID:0000000009761218
DTC DETECTION LOGIC
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
NO
>> Inspection End.
Diagnosis Procedure
INFOID:0000000009761219
NOTE:
Follow the procedures in numerical order when repairing malfunctioning parts. Confirm whether malfunction is
eliminated using air bag warning lamp each time repair is finished. If malfunction is still observed, proceed to
the next step. When malfunction is eliminated, further repair work is not required.
1.
HARNESS CONNECTOR
Is there any visible damage to the connector?
YES or NO
YES
>> Replace the harness.
NO
>> GO TO 2
2.
WIRING HARNESS
Is there any visible damage to the harness?
YES or NO
YES
>> Replace the harness.
NO
>> GO TO 3
3.
AIR BAG DIAGNOSIS SENSOR UNIT
CONSULT name
DTC
DTC detecting condition
Repair order
IGN VOLTAGE
[LOW]
B142A
Ignition voltage low at air bag diagnosis sensor unit. Refer to
.
IGN VOLTAGE
[HIGH]
Ignition voltage high at air bag diagnosis sensor unit.
SRC-88
< DTC/CIRCUIT DIAGNOSIS >
B142A IGNITION VOLTAGE
Replace the air bag diagnosis sensor unit. Refer to
SR-29, "Removal and Installation"
>> GO TO 4
4.
RELATED HARNESS
Replace the related harness.
>> END
U1000 CAN COMM CIRCUIT
SRC-89
< DTC/CIRCUIT DIAGNOSIS >
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U1000 CAN COMM CIRCUIT
Description
INFOID:0000000009761220
CAN (Controller Area Network) is a serial communication system for real time application. It is an on-vehicle
multiplex communication system with high data communication speed and excellent error detection ability.
Many electronic control units are equipped into vehicles, and each control unit shares information and links
with other control units during operation. With CAN communication, control units are connected with two com-
munication lines (CAN-H line, CAN-L line) allowing a high rate of information transmission with less wiring.
Each control unit transmits and receives data but selectively reads required data only. Refer to
COMMUNICATION SYSTEM : CAN Communication Signal Chart"
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DTC Logic
INFOID:0000000009761221
DTC DETECTION LOGIC
DTC CONFIRMATION PROCEDURE
1.
PERFORM SELF-DIAGNOSIS
1. Turn ignition switch ON and wait for 7 seconds or more.
2. Using CONSULT, perform SELF-DIAGNOSIS RESULTS of AIR BAG.
3. Check if any DTC is displayed in the self-diagnosis results.
Is DTC detected?
YES
>> Refer to
NO
>> Refer to
GI-41, "Intermittent Incident"
.
Diagnosis Procedure
INFOID:0000000009761222
1.
CHECK CAN COMMUNICATION SYSTEM
Check CAN communication system. Refer to
LAN-15, "Trouble Diagnosis Flow Chart"
.
>> Inspection End.
CONSULT name
DTC
DTC detecting condition
Repair order
CAN COMMUNICATION FAILURE
U1000
When air bag diagnosis sensor unit is not
transmitting or receiving CAN communi-
cation signals for 2 or more seconds.
Refer to
.
SRC-90
< DTC/CIRCUIT DIAGNOSIS >
U1010 CONTROL UNIT (CAN)
U1010 CONTROL UNIT (CAN)
Description
INFOID:0000000009761223
Air bag diagnosis sensor performs self-tests on key ON. If CAN communication failure within control unit is
detected, DTC is set.
DTC Logic
INFOID:0000000009761224
DTC DETECTION LOGIC
DTC CONFIRMATION PROCEDURE
1.
PERFORM SELF-DIAGNOSIS
1. Turn ignition switch ON.
2. Using CONSULT, perform SELF DIAGNOSIS RESULTS of AIR BAG.
3. Check if DTC is displayed in the self-diagnosis results.
Is DTC detected?
YES
>> Refer to
NO
>> Inspection End.
Diagnosis Procedure
INFOID:0000000009761225
1.
REPLACE AIR BAG DIAGNOSIS SENSOR UNIT
Replace air bag diagnosis sensor unit. Refer to
SR-29, "Removal and Installation"
.
>> Inspection End.
CONSULT name
DTC
DTC detecting condition
Repair order
CAN CONTROL UNIT FAILURE
U1010
CAN communication error is detected in
control unit.
.
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