Nissan Frontier D40. Manual - part 991

SRC-16

< FUNCTION DIAGNOSIS >

ON BOARD DIAGNOSTIC (OBD) SYSTEM

HOW TO CHANGE SELF-DIAGNOSIS MODE 

DIAGNOSTIC PROCEDURE 3

Final Check of SRS Using CONSULT-III—Diagnosis Mode

1.

Connect CONSULT-III.

2.

If no DTC is detected on “SELF-DIAG [CURRENT]”, repair of SRS is completed. Go to step 3.
If any DTC is detected on “SELF-DIAG [CURRENT]”, the malfunctioning part has not been repaired com-
pletely or another malfunctioning part is being detected. Perform DIAGNOSTIC PROCEDURE 2.  Refer to

SRC-13, "SRS Operation Check"

.

3.

Touch “ERASE”.
NOTE:
Touch “ERASE” to clear the memory of the malfunction (“SELF-DIAG [PAST]”).
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.

4.

Touch “BACK” key of CONSULT-III.  Touch “SELF-DIAG [PAST]”.

5.

Check that no malfunction is detected on “SELF-DIAG [PAST]”.

6.

Touch “BACK” key of CONSULT-III to return to User mode from Diagnosis mode.

7.

Turn ignition switch OFF and then turn off and disconnect CONSULT-III.

8.

Go to 

SRC-13, "SRS Operation Check"

.

DIAGNOSTIC PROCEDURE 4

Check SRS Repair History

1.

CONSIDER POSSIBILITY THAT SELF-DIAGNOSTIC RESULT WAS NOT ERASED AFTER REPAIR

Check repair history of the SRS.

Have any previous repairs been made to the SRS?

YES

>> Self-diagnostic result “SELF-DIAG [PAST]” (previously stored in the memory) might not be erased

after repair. Perform DIAGNOSTIC PROCEDURE 3.  Refer to 

SRC-15, "Self-Diagnosis Function

(Without CONSULT-III)"

.

NO

>> Perform DIAGNOSTIC PROCEDURE 2.  Refer to 

SRC-13, "SRS Operation Check"

.

SHIA0183E

B1049 – B1052, B1054 – B1057 DRIVER AIRBAG MODULE

SRC-17

< COMPONENT DIAGNOSIS >

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COMPONENT DIAGNOSIS

B1049 – B1052, B1054 – B1057 DRIVER AIRBAG MODULE

Description

INFOID:0000000005274385

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

Refer to 

SRC-7, "SRS Component Parts Location"

.

DTC Logic

INFOID:0000000005274386

DTC DETECTION LOGIC 

With CONSULT-lll

Without CONSULT-lll

DTC CONFIRMATION PROCEDURE (With CONSULT-lll)

CONSULT-III 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.

Replace the driver air bag module.

4.

Replace the spiral cable.

5.

Replace the air bag diagnosis sensor unit.

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).

WHIA0260E

SRC-18

< COMPONENT DIAGNOSIS >

B1049 – B1052, B1054 – B1057 DRIVER AIRBAG MODULE

1.

INSPECTION START

Turn ignition switch ON.

>> GO TO 2.

2.

CHECK SELF-DIAG RESULT

Check for the DTC on CONSULT-lll.

Is the DTC detected?

YES

>> Refer to 

SRC-18, "Diagnosis Procedure (Component Diagnosis)"

.

NO

>> Inspection End.

DTC CONFIRMATION PROCEDURE (Without CONSULT-lll)

NOTE:
SRS will not enter diagnosis mode if no malfunction is detected in user mode.

1.

IGNITION SWITCH

Turn ignition switch ON.

>> GO TO 2

2.

IGNITION SWITCH

After air bag warning lamp lights for 7 seconds, turn ignition switch OFF within 1 second.

>> GO TO 3

3.

WAIT TIME

Wait more than 3 seconds.

>> GO TO 4

4.

REPEAT STEPS

Repeat steps 1 to 3 twice.

>> GO TO 5

5.

IGNITION SWITCH

Turn ignition switch ON.

>> GO TO 6

6.

DIAGNOSTIC MODE

SRS system is now in diagnostic mode and AIR BAG warning lamp flashes. Refer to 

SRC-15, "Trouble Diag-

nosis without CONSULT-III"

.

>> END

Diagnosis Procedure (Component Diagnosis)

INFOID:0000000005274387

Recheck SRS after each replacement.

1.

HARNESS CONNECTOR

Is there any visible damage to the connector?
YES or NO

YES

>> Replace the harness.

NO

>> GO TO 2

B1049 – B1052, B1054 – B1057 DRIVER AIRBAG MODULE

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2.

WIRING HARNESS

Is there any visible damage to the harness?
YES or NO

YES

>> Replace the harness.

NO

>> GO TO 3

3.

DRIVER AIR BAG MODULE

Replace the driver air bag module.  Refer to 

SR-4, "Removal and Installation"

.

>> GO TO 4

4.

SPIRAL CABLE

Replace the spiral cable.  Refer to 

SR-6, "Removal and Installation"

.

>> GO TO 5

5.

AIR BAG DIAGNOSIS SENSOR UNIT

Replace the air bag diagnosis sensor unit.  Refer to 

SR-15, "Removal and Installation"

.

>> GO TO 6

6.

RELATED HARNESS

Replace the related harness.

>> END