sensor NISSAN PRIMERA 1999 Electronic Repair Manual

SRS-Operation Check
DIAGNOSTIC PROCEDURE 1
Checking Air Bag Operation by using ªAIR BAGº Warning
Lamp Ð User mode
1. After turning ignition switch from ªOFFº to ªONº, ªAIR BAGº
warning lamp operates.
2. Compare ªAIR BAGº warning lamp operation to the chart
below.
NOTE:
If ªAIR BAGº warning lamp operates differently from the
operations shown above, refer to ªAIR BAGº warning lamp
operation Ð Diagnosis mode Ð, DIAGNOSTIC PROCEDURE
6 (step 4), RS-48.
SRS800
ªAIR BAGº warning lamp operation Ð User mode Ð SRS condition Reference item
MRS095A
No malfunction is
detected. No further
action is necessary.
Ð
MRS096A
The system is malfunc-
tioning and needs to be
repaired as indicated.Go to DIAGNOSTIC
PROCEDURE 2, or 6
(RS-38 or 48 ).
MRS097A
Air bag or/and seat belt
pre-tensioner is
deployed.Go to COLLISION DIAG-
NOSIS (RS-57).
Air bag fuse, diagnosis
sensor unit or harness is
malfuncitoning and
needs to be repaired.Go to DIAGNOSTIC
PROCEDURE 9 (RS-56).
MRS098A
One of the following has
occurred and needs to
be repaired.
lMeter fuse is blown.lªAIR BAGº warning
lamp circuit has open
or short.
lDiagnosis sensor unit
is malfunctioning.Go to DIAGNOSTIC
PROCEDURE 10 (RS-
56).
IGN ON
ON
OFF7 sec.
IGN ON
ON
OFF
0.5 sec. 0.5 sec.
IGN ON
ON
OFF
IGN ON
ON
OFF
TROUBLE DIAGNOSES Ð Supplemental Restraint System (SRS)
RS-37

If no malfunction is detected on ªSELF-DIAG [CURRENT]º but
malfunction is indicated by the ªAIR BAGº, warning lamp, go to
DIAGNOSTIC PROCEDURE 4, page RS-43, to diagnose the
following situations:
lSelf-diagnostic result ªSELF-DIAG [PAST]º (previously
stored in the memory) might not be erased after repair.
lThe SRS system malfunctions intermittently.
8. Touch ªPRINTº.
9. Compare diagnostic codes to ªCONSULT-II Diagnostic Code
Chartº, page RS-39.
10. Touch ªBACKº key of CONSULT-II until ªSELECT SYSTEM º
appears in order to return to User mode from Diagnosis
mode.
11. Turn ignition switch ªOFFº, then turn off and disconnect CON-
SULT-II and both battery cables.
12. Repair the system as outlined by the ªRepair orderº in ªCON-
SULT-II Diagnostic Code Chartº, that corresponds to the self-
diagnostic result. For replacement procedure of component
parts, refer to RS-13.
13. After repairing the system, go to DIAGNOSTIC PROCE-
DURE 3, page RS-42 for final checking.
CONSULT-II Diagnostic Code Chart
(ªSELF-DIAGNOSISº)
Diagnostic item ExplanationRepair order
Recheck SRS at each
replacement.
NO DTC IS DETECTED. When malfunction is indi-
cated by the ªAIR BAGº
warning lamp in User mode
lLow battery voltage (Less
than 9V).lGo to DIAGNOSTIC PRO-
CEDURE 3 (RS-42) after
charging battery.
lSelf-diagnostic result
ªSELF-DIAG [PAST]º (pre-
viously stored in the
memory) might not be
erased after repair.
lIntermittent malfunction has
been detected in the past.Go to DIAGNOSTIC PROCE-
DURE 4 (RS-43).
No malfunction is detected.
lGo to DIAGNOSTIC PRO-
CEDURE 3 (RS-42).
AIRBAG MODULE
[OPEN]
lDriver's air bag module circuit is open. (including the spiral
cable)1. Visually check the wiring
harness connection.
2. Replace the harness if it
has visible damage.
3. Replace driver's air bag
module.
(Before disposing of it, it
must be deployed.)
4. Replace the spiral cable.
5. Replace the diagnosis
sensor unit.
6. Replace the related har-
ness.
C2SDC02
TROUBLE DIAGNOSES Ð Supplemental Restraint System (SRS)
Trouble Diagnoses with CONSULT-II
(Cont'd)
RS-39

Diagnostic item ExplanationRepair order
Recheck SRS at each
replacement.
AIRBAG MODULE
[VB-SHORT]
lDriver's air bag module circuit is shorted to a power supply
circuit. (including the spiral cable)1. Visually check the wiring
harness connection.
2. Replace the harness if it
has visible damage.
3. Replace the spriral cable.
4. Replace driver's air bag
module.
(Before disposing of it, it
must be deployed.)
5. Replace the diagnosis
sensor unit.
6. Replace the related har-
ness. AIRBAG MODULE
[GND-SHORT]
lDriver's air bag module circuit is shorted to ground. (includ-
ing the spiral cable)
AIRBAG MODULE
[SHORT]
lDriver's air bag module circuits are shorted to each other.
ASSIST A/B MODULE
[VB/SHORT]
lPassenger's air bag module circuit is shorted to some
power supply circuit.1. Visually check the wiring
harness connection.
2. Replace the harness if it
has visible damage.
3. Replace passenger's air
bag module. (Before dis-
posal of it, it must be
deployed.)
4. Replace the diagnosis
sensor unit.
5. Replace the related har-
ness. ASSIST A/B MODULE
[OPEN]
lPassenger's air bag module circuit is open.
ASSIST A/B MODULE
[GND-SHORT]
lPassenger's air bag module circuit is shorted to ground.
ASSIST A/B MODULE
[SHORT]
lPassenger's air bag module circuits are shorted to each
other.
SIDE MODULE LH
[OPEN]
lSide air bag module (LH) circuit is open. 1. Visually check the wiring
harness connection.
2. Replace the harness if it
has visible damage.
3. Replace the side air bag
module (LH). (Before
disposal, it must be
deployed.)
4. Replace the diagnosis
sensor unit.
5. Replace the related har-
ness. SIDE MODULE LH
[VB-SHORT]
lSide air bag module (LH) circuit is shorted to some power
supply circuits.
SIDE MODULE LH
[GND-SHORT]
lSide air bag module (LH) circuit is shorted to ground.
SIDE MODULE LH
[SHORT]
lSide air bag module (LH) circuits are shorted to each other.
SIDE MODULE RH
[OPEN]
lSide air bag module (RH) circuit is open. 1. Visually check the wiring
harness connection.
2. Replace the harness if it
has visible damage.
3. Replace the side air bag
module (RH). (Before
disposal, it must be
deployed.)
4. Replace the diagnosis
sensor unit.
5. Replace the related har-
ness. SIDE MODULE RH
[VB-SHORT]
lSide air bag module (RH) circuit is shorted to some power
supply circuits.
SIDE MODULE RH
[GND-SHORT]
lSide air bag module (RH) circuit is shorted to ground.
SIDE MODULE RH
[SHORT]
lSide air bag module (RH) circuits are shorted to each
other.
SATELLITE SENS LH
[UNIT FAIL]
SATELLITE SENS LH
[COMM FAIL]
lSatellite sensor (LH) 1. Visually check the wiring
harness connection.
2. Replace the harness if it
has visible damage.
3. Replace the satellite sen-
sor (LH).
4. Replace the diagnosis
sensor unit.
5. Replace the related har-
ness.
TROUBLE DIAGNOSES Ð Supplemental Restraint System (SRS)
Trouble Diagnoses with CONSULT-II
(Cont'd)
RS-40

Diagnostic item ExplanationRepair order
Recheck SRS at each
replacement.
SATELLITE SENS RH
[UNIT FAIL]
SATELLITE SENS RH
[COMM FAIL]
lSatellite sensor (RH) 1. Visually check the wiring
harness connection.
2. Replace the harness if it
has visible damage.
3. Replace the satellite sen-
sor (RH).
4. Replace the diagnosis
sensor unit.
5. Replace the related har-
ness.
PRE-TEN LH
[OPEN/VB-SHORT]
lThe circuit for LH pre-tensioner is open or shorted to some
power supply circuit.1. Visually check the wiring
harness connections.
2. Replace the harness if it
has visible damage.
3. Replace LH seat belt.
(Before disposing, it must
be deactivated.)
4. Replace the diagnosis
sensor unit
5. Replace the related har-
ness. PRE-TEN LH
[GND-SHORT]
lThe circuit for LH pre-tensioner is shorted to ground.
PRE-TEN RH
[OPEN/VB-SHORT]
lThe circuit for RH pre-tensioner is open or shorted to some
power supply circuit.1. Visually check the wiring
harness connections.
2. Replace the harness if it
has visible damage.
3. Replace RH seat belt.
(Before disposing, it must
be deactivated.)
4. Replace the diagnosis
sensor unit
5. Replace the related har-
ness. PRE-TEN RH
[GND-SHORT]
lThe circuit for RH pre-tensioner is shorted to ground.
CONTROL UNIT
lLow battery voltage or diagnosis sensor unit is out of order. 1. Charge battery.
2. Visually check wiring har-
ness connections.
3. Replace diagnosis sensor
unit.
CONTROL UNIT
lLow battery voltage (Less than 9V)lGo to DIAGNOSTIC PRO-
CEDURE 3 (RS-42) to after
charging battery.
lDiagnosis sensor unit is malfunctioning. 1. Visually check wiring har-
ness connections.
2. Replace the harness if it
has visible damage.
3. Replace diagnosis sensor
unit.
4. Replace the related har-
ness.
* Follow the procedures in numerical order when repairing malfunctioning parts. Confirm whether malfunction is eliminated
using the air bag warning lamp or CONSULT-II 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.
TROUBLE DIAGNOSES Ð Supplemental Restraint System (SRS)
Trouble Diagnoses with CONSULT-II
(Cont'd)
RS-41

Intermittent Malfunction Diagnostic Code Chart
(ªSELF DIAG [PAST]º or ªTROUBLE DIAG RECORDº)
Diagnostic item Explanation Repair order
NO DTC IS DETECTED. When malfunction is indi-
cated by the ªAIR BAGº
warning lamp in User mode
lLow battery voltage (Less
than 9V).lGo to DIAGNOSTIC PRO-
CEDURE 3 (RS-42) after
charging battery.
No malfunction is detected.
lGo to DIAGNOSTIC PRO-
CEDURE 3 (RS-42).
AIRBAG MODULE
[OPEN]
lDriver's air bag module circuit is open. (including the spiral
cable)1. Visually check the wiring
harness connection.
2. Replace the harness if it
has visible damage.
3. If the harness check result
is OK, replace driver's air
bag module (Before dis-
posal of it, it must be
deployed.), diagnosis sen-
sor unit and spiral cable. AIRBAG MODULE
[VB-SHORT]
lDriver's air bag module circuit is shorted to some power
supply circuit. (including the spiral cable)
AIRBAG MODULE
[GND-SHORT]
lDriver's air bag module circuit is shorted to ground. (includ-
ing the spiral cable)
AIRBAG MODULE
[SHORT]
lDriver's air bag module circuits are shorted to each other.
ASSIST A/B MODULE
[VB/SHORT]
lPassenger's air bag module circuit is shorted to some
power supply circuit.1. Visually check the wiring
harness connection.
2. Replace the air bag har-
ness if it has visible dam-
age.
3. If the harness check result
is OK, replace front air
bag module (Before dis-
posal of it, it must be
deployed.), and diagnosis
sensor unit. ASSIST A/B MODULE
[OPEN]
lPassenger's air bag module is open.
ASSIST A/B MODULE
[GND-SHORT]
lPassenger's air bag module circuit is shorted to ground.
ASSIST A/B MODULE
[SHORT]
lPassenger's air bag module circuits are shorted to each
other.
SIDE MODULE LH
[OPEN]
lSide air bag module (LH) circuit is open. 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 and side air
bag module (LH). (Before
disposing the side air bag
module (LH), it must be
deployed.) SIDE MODULE LH
[VB-SHORT]
lSide air bag module (LH) circuit is shorted to some power
supply circuits.
SIDE MODULE LH
[GND-SHORT]
lSide air bag module (LH) circuit is shorted to ground.
SIDE MODULE LH
[SHORT]
lSide air bag module (LH) circuits are shorted to each other.
SIDE MODULE RH
[OPEN]
lSide air bag module (RH) circuit is open. 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 and side air
bag module (RH). (Before
disposing the side air bag
module (RH), it must be
deployed.) SIDE MODULE RH
[VB-SHORT]
lSide air bag module (RH) circuit is shorted to some power
supply circuits.
SIDE MODULE RH
[GND-SHORT]
lSide air bag module (RH) circuit is shorted to ground.
SIDE MODULE RH
[SHORT]
lSide air bag module (RH) circuits are shorted to each
other.
SATELLITE SENS LH
[UNIT FAIL]
SATELLITE SENS LH
[COMM FAIL]
lSatellite sensor (LH) 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 and satellite
sensor (LH).
TROUBLE DIAGNOSES Ð Supplemental Restraint System (SRS)
Trouble Diagnoses with CONSULT-II
(Cont'd)
RS-46

Diagnostic item Explanation Repair order
SATELLITE SENS RH
[UNIT FAIL]
SATELLITE SENS RH
[COMM FAIL]
lSatellite sensor (RH) 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 and satellite
sensor (RH).
PRE-TEN LH
[OPEN/VB-SHORT]
lThe circuit for LH seat belt pre-tensioner is open or shorted
to some power supply circuit.1. Visually check the wiring
harness connections.
2. Replace the harness if it
has visible damage.
3. If the harness check is
OK, replace the diagnosis
sensor unit and LH seat
belt. (Before disposing the
LH seat belt pre-tensioner,
if must be deployed.) PRE-TEN LH
[GND-SHORT]
lThe circuit for LH seat belt pre-tensioner is shorted to
ground.
PRE-TEN RH
[OPEN/VB-SHORT]
lThe circuit for RH seat belt pre-tensioner is open or shorted
to some power supply circuit.1. Visually check the wiring
harness connections.
2. Replace the harness if it
has visible damage.
3. If the harness check is
OK, replace the diagnosis
sensor unit and RH seat
belt. (Before disposing the
RH seat belt pre-tensioner,
if must be deployed.) PRE-TEN RH
[GND-SHORT]
lThe circuit for RH seat belt pre-tensioner is shorted to
ground.
CONTROL UNIT
lDiagnosis 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.
* Follow the procedures in numerical order when repairing malfunctioning parts, then make the final system check.
TROUBLE DIAGNOSES Ð Supplemental Restraint System (SRS)
Trouble Diagnoses with CONSULT-II
(Cont'd)
RS-47

Trouble Diagnoses without CONSULT-II
DIAGNOSTIC PROCEDURE 6
Inspecting SRS malfunction parts by using ªAIR BAGº
warning lamp Ð Diagnosis mode
NOTE:
SRS will not enter Diagnosis mode if no malfunction is
detected in User mode.
1. Turn ignition switch ªONº.
2. After ªAIR BAGº warning lamp lights for 7 seconds, turn igni-
tion switch ªOFFº within 1 second.
3. Wait more than 3 seconds.
4. Repeat steps 1 to 3 three times.
5. Turn ignition switch ªONº.
SRS is now in Diagnosis mode.
6. ªAIR BAGº warning lamp operates in Diagnosis mode as fol-
lows:
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 go
to DIAGNOSTIC PROCEDURE 7, page RS-53.
If the battery voltage is OK, replace the diagnosis sensor unit.
SRS800
TROUBLE DIAGNOSES Ð Supplemental Restraint System (SRS)
RS-48

Air Bag Warning Lamp Flash Code Chart (Diagnosis
mode)
lDiagnosis results (previ-
ously stored in the
memory) might not be
erased after repair.
lIntermittent malfunction
has been detected in the
past.Flash pattern
SRS333
pathroughpb
are repeated.
Repair order
lGo to DIAGNOSTIC PROCEDURE 8 (RS-55).
The driver's air bag module
circuit is malfunctioning.
(
pd: 2 flashes)Flash patternSRS334
pathroughpd
are repeated.
pdÐ Two flashes
indicated malfunc-
tioning driver's air
bag module circuit.
Repair order (ªRecheck SRS at each replacement.º)
1. Visually check the wiring harness connection.
2. Replace the harness if it has visible damage.
3. Replace the spiral cable.
4. Replace driver's air bag module.
(Before disposal, it must be deployed.)
5. Replace the diagnosis sensor unit.
6. Replace the related harness.
The diagnosis sensor unit is
malfunctioning.
(
pd: 7 flashes)Flash pattern
SRS335
pathroughpd
are repeated.
pdÐ Seven
flashes indicate
malfunctioning diag-
nosis sensor unit.
Repair order (ªRecheck SRS at each replacement.º)
1. Visually check the wiring harness connection.
2. Replace the harness if it has visible damage.
3. Replace the diagnosis sensor unit.
4. Replace the related harness.
IGN ON
ON
OFF
7 sec.3 sec.
2 sec.
IGN ON
ON
OFF
7 sec.3 sec.
2 sec. 2 sec.
IGN ON
ON
OFF
7 sec.
2 sec. 1.5 sec.2 sec.
TROUBLE DIAGNOSES Ð Supplemental Restraint System (SRS)
Trouble Diagnoses without CONSULT-II
(Cont'd)
RS-50

The passenger's air bag
module circuit is malfunc-
tioning.
(
pd: 8 flashes)Flash patternSRS336
pathroughpd
are repeated.
pdÐ Eight
flashes indicated
malfunctioning pas-
senger's air bag
module circuit.
Repair order (ªRecheck SRS at each replacement.º)
1. Visually check the wiring harness connection.
2. Replace the harness if it has visible damage.
3. Replace passenger's air bag module.
(Before disposal, it must be deployed.)
4. Replace the diagnosis sensor unit.
5. Replace the related harness.
The RH seat belt pre-ten-
sioner circuit is malfunction-
ing. (
pd1 flash)Flash pattern
SRS801
pathroughpd
are repeated.
pdÐ One flash
indicates malfunc-
tioning RH seat belt
pre-tensioner cir-
cuit.
Repair order (ªRecheck SRS at each replacement.º)
1. Visually check the wiring harness connection.
2. Replace the harness if it has visible damage.
3. Replace RH seat belt pre-tensioner.
(Before disposing, it must be deactivated.)
4. Replace the diagnosis sensor unit.
5. Replace the related harness.
The LH seat belt pre-ten-
sioner circuit is malfunction-
ing. (
pd3 flash)Flash pattern
SRS802
pathroughpd
are repeated.
pdÐ Three flash
indicates malfunc-
tioning LH seat belt
pre-tensioner cir-
cuit.
Repair order (ªRecheck SRS at each replacement.º)
1. Visually check the wiring harness connection.
2. Replace the harness if it has visible damage.
3. Replace LH seat belt pre-tensioner.
(Before disposing, it must be deactivated.)
4. Replace the diagnosis sensor unit.
5. Replace the related harness.
3 sec.
IGN ON
ON
OFF
7 sec.
2 sec.3 sec. IGN ON
ON
OFF
7 sec.
2 sec.2 sec.
2 sec.
IGN ON
ON
OFF
7 sec.
2 sec. 2 sec.3 sec.
TROUBLE DIAGNOSES Ð Supplemental Restraint System (SRS)
Trouble Diagnoses without CONSULT-II
(Cont'd)
RS-51

The side air bag module
(RH) circuit is malfunction-
ing.
(
pf: 1 flash)Flash patternSRS338
pathroughpf
are repeated.
pfÐ One flash
indicates malfunc-
tioning side air bag
module (RH) circuit.
Repair order (ªRecheck SRS at each replacement.º)
1. Visually check the wiring harness connection.
2. Replace the harness if it has visible damage.
3. Replace side air bag module (RH).
(Before disposal, it must be deployed.)
4. Replace the diagnosis sensor unit.
5. Replace the related harness.
The side air bag module
(LH) circuit is malfunction-
ing.
(
pf: 2 flashes)Flash patternSRS337
pathroughpf
are repeated.
pfÐ Two flashes
indicate malfunc-
tioning side air bag
module (LH) circuit.
Repair order (ªRecheck SRS at each replacement.º)
1. Visually check the wiring harness connection.
2. Replace the harness if it has visible damage.
3. Replace side air bag module (LH).
(Before disposal, it must be deployed.)
4. Replace the diagnosis sensor unit.
5. Replace the related harness.
The satellite sensor (RH) is
malfunctioning.
(
pf: 3 flashes)Flash patternSRS340
pathroughpf
are repeated.
pfÐ Three
flashes indicated
malfunctioning sat-
ellite sensor (RH)
circuit.
Repair order (ªRecheck SRS at each replacement.º)
1. Visually check the wiring harness connection.
2. Replace the harness if it has visible damage.
3. Replace the satellite sensor (RH).
4. Replace the diagnosis sensor unit.
5. Replace the related harness.
IGN ON
ON
OFF
7 sec.
2 sec.2 sec.
1.5 sec.
0.5 sec. 1.5 sec.
IGN ON
ON
OFF
7 sec.
2 sec.
1.5 sec.
0.5 sec.1.5 sec.2 sec.
IGN ON
ON
OFF
7 sec.
2 sec.
1.5 sec. 0.5 sec.
1.5 sec.2 sec.
TROUBLE DIAGNOSES Ð Supplemental Restraint System (SRS)
Trouble Diagnoses without CONSULT-II
(Cont'd)
RS-52