Nissan Frontier D22. Manual — part 916

SRS-30

TROUBLE DIAGNOSIS

*: Intermittent malfunction areas cannot be easily located. For this reason, perform the procedures outlined under the repair order, then
make the final system check.

CONTROL UNIT

●

Diagnosis sensor unit is malfunctioning.

1. Visually check the wiring harness

connection.

2. Replace the harness if it has visible

damage.

3. If the harness check is OK, replace

the diagnosis sensor unit.

4. If the harness check is OK, replace

the diagnosis sensor unit.

Code B4
or
PASS A/B DEACT SW

●

Activate terminal is open.

1. Visually check wiring harness con-

nections.

2. Replace harness if it has visible

damage.

3. If the harness visual check result is

OK, replace passenger air bag
deactivation switch. (The key cylin-
der of passenger air bag deactiva-
tion switch does not have to be
replaced.)

●

Activate terminal is shorted to ground.

●

Deactivate terminal is open.

●

Deactivate terminal is shorted to ground.

●

Activate terminal and deactivate terminal are shorted to each
other.

Code B5
or
PASS A/B DEACT SW
INDICATOR

●

Passenger air bag deactivation switch indicator circuit is open.

1. Visually check wiring harness con-

nections.

2. Replace harness if it has visible

damage.

3. If the harness visual check result is

OK, replace passenger air bag
deactivation switch indicator.

●

Passenger air bag deactivation switch indicator circuit is
shorted to some power supply circuit.

●

Passenger air bag deactivation switch indicator circuit is
shorted to ground.

INDEFINITE FAILURES
[AIR BAGS]

●

Passenger air bag deactivation switch status is not identified.

1. Visually check wiring harness con-

nections.

2. Replace harness if it has visible

damage.

3. Replace passenger air bag deacti-

vation switch (the key cylinder of the
passenger air bag deactivation
switch does not have to be replaced)

4. Replace air bag diagnosis sensor

unit.

5. Replace the related harness.

Self-diagnosis result

Explanation

Repair order*

TROUBLE DIAGNOSIS

SRS-31

C

D

E

F

G

I

J

K

L

M

A

B

SRS

Trouble Diagnoses without CONSULT-II

EHS000T2

DIAGNOSTIC PROCEDURE 6

Inspecting SRS malfunctioning parts by using “AIR BAG” warn-
ing lamp — Diagnosis mode

NOTE:
SRS will not enter Diagnosis mode if no malfunction is detected
in User mode.

1.

Turn ignition switch “ON”.

2.

After “AIR BAG” warning lamp lights for 7 seconds, turn ignition
switch “OFF” within 1 second.

3.

Wait more than 3 seconds.

4.

Repeat steps 1 to 3 three times.

5.

Turn ignition switch “ON”.
SRS is now in Diagnosis mode.

6.

“AIR BAG” warning lamp operates in Diagnosis mode as follows:

NOTE:
If SRS does not enter Diagnosis mode even though malfunction is detected in User mode, check the battery
voltage.
If the battery voltage is less than 9V, charge the battery. Then refer to

SRS-35, "DIAGNOSTIC PROCEDURE

7"

.

If the battery voltage is OK, replace the diagnosis sensor unit.

SRS800

No.

“AIR BAG” warning lamp flash pattern — Diagnosis mode —

SRS condition

1

a through b are repeated.

●

Diagnosis
results (pre-
viously
stored in
the mem-
ory) might
not be
erased after
repair.

●

Intermittent
malfunction
has been
detected in
the past.

Go to

SRS-

36, "DIAG-
NOSTIC
PROCE-
DURE 8
(CONTIN-
UED FROM
DIAGNOS-
TIC PROCE-
DURE 6)"

.

2

a through d are repeated.
b — Driver and passenger air
bag and seat belt pre-tensioner
marker (For identifying driver air
bag, passenger air bag and/or
seat belt pre-tensioners mal-
functioning)
d — Indicates malfunctioning
part. The number of flash varies
with malfunctioning part (0.5
sec. ON and 0.5 sec. OFF is
counted as one flash.)

The system is
malfunction-
ing and needs
to be repaired.

SRS333

SRS341

SRS-32

TROUBLE DIAGNOSIS

7.

Malfunctioning part is indicated by the number of flashes (part d ). Compare the number of flashes to “Air
Bag Warning Lamp Flash Code Chart”. Refer to

SRS-33, "Air Bag Warning Lamp Flash Code Chart (Diag-

nosis Mode)"

, and locate malfunctioning part.

8.

Turn ignition switch “OFF”, and disconnect both battery cables.

9.

Repair the system as outlined by the “Repair order” in “Warning Lamp Flash Code Chart” that corre-
sponds to the flash code. For replacement procedure of component parts, refer to the applicable Removal
and Installation procedure.

10. After repairing the system, refer to

SRS-35, "DIAGNOSTIC PROCEDURE 7"

.

TROUBLE DIAGNOSIS

SRS-33

C

D

E

F

G

I

J

K

L

M

A

B

SRS

Air Bag Warning Lamp Flash Code Chart (Diagnosis Mode)

Warning

lamp

Flash code d
(# of flashes)

Explanation

Repair order

*Recheck SRS at each replacement.

“AI

R BAG

” wa

rn

in

g

la

mp

0

●

Self-diagnosis result (previously stored in the
memory) might not have been erased after
repair.

●

Intermittent malfunction has been detected in
the past.

Go to

SRS-36, "DIAGNOSTIC PROCEDURE 8

(CONTINUED FROM DIAGNOSTIC PROCE-
DURE 6)"

.

1

The driver seat belt pre-tensioner circuit is mal-
functioning.

1. Visually check wiring harness connections.

2. Replace harness if it has visible damage.

3. Replace driver seat belt pre-tensioner.

(Before disposing, it must be deactivated.)

4. Replace air bag diagnosis sensor unit.

5. Replace the related harness.

2

The driver air bag module circuit is malfunction-
ing.

1. Visually check wiring harness connections.

2. Replace harness if it has visible damage.

3. Replace spiral cable.

4. Replace driver air bag module.

(Before disposing of it, it must be deployed.)

5. Replace air bag diagnosis sensor unit.

6. Replace the related harness.

3

The passenger seat belt pre-tensioner circuit is
malfunctioning.

1. Visually check wiring harness connections.

2. Replace harness if it has visible damage.

3. Replace passenger seat belt pre-tensioner.

(Before disposing of it, it must be deactivated.)

4. Replace air bag diagnosis sensor unit.

5. Replace the related harness.

7

The air bag diagnosis sensor unit is malfunction-
ing.

1. Visually check wiring harness connections.

2. Replace harness if it has visible damage.

3. Replace air bag diagnosis sensor unit.

4. Replace the related harness.

8

The passenger air bag module circuit is malfunc-
tioning.

1. Visually check wiring harness connections.

2. Replace harness if it has visible damage.

3. Replace passenger air bag module.

(Before disposing of it, it must be deployed.)

4. Replace air bag diagnosis sensor unit.

5. Replace the related harness.

9

Passenger air bag deactivation switch is not iden-
tified.

1. Visually check wiring harness connections.

2. Replace harness if it has visible damage.

3. Replace passenger air bag deactivation

switch. (The key cylinder of the deactivation
switch does not have to be replaced.)

4. Replace air bag diagnosis sensor unit.

5. Replace the related harness.