
Precautions for Service EquipmentNJHA0117RECOVERY/RECYCLING EQUIPMENTNJHA0117S01Follow the manufacturer’s instructions for machine operation and
machine maintenance. Never introduce any refrigerant other than
that specified into the machine.
ELECTRONIC LEAK DETECTORNJHA0117S02Follow the manufacture’s instructions for tester operation and
tester maintenance.
RHA270D
VACUUM PUMPNJHA0117S03The lubricant contained inside the vacuum pump is not compatible
with the specified lubricant for HFC-134a (R-134a) A/C systems.
The vent side of the vacuum pump is exposed to atmospheric
pressure. So the vacuum pump lubricant may migrate out of the
pump into the service hose. This is possible when the pump is
switched off after evacuation (vacuuming) and hose is connected
to it.
To prevent this migration, use a manual valve situated near the
hose-to-pump connection, as follows.
Usually vacuum pumps have a manual isolator valve as part
of the pump. Close this valve to isolate the service hose from
the pump.
For pumps without an isolator, use a hose equipped with a
manual shut-off valve near the pump end. Close the valve to
isolate the hose from the pump.
If the hose has an automatic shut off valve, disconnect the
hose from the pump: as long as the hose is connected, the
valve is open and lubricating oil may migrate.
Some one-way valves open when vacuum is applied and close
under a no vacuum condition. Such valves may restrict the pump’s
ability to pull a deep vacuum and are not recommended.
SHA533D
MANIFOLD GAUGE SETNJHA0117S04Be certain that the gauge face indicates R-134a or 134a. Make
sure the gauge set has 1/2″-16 ACME threaded connections for
service hoses. Confirm the set has been used only with refrigerant
HFC-134a (R-134a) along with specified lubricant.
RHA272D
SERVICE HOSESNJHA0117S05Be certain that the service hoses display the markings described
(colored hose with black stripe). All hoses must include positive
shut off devices (either manual or automatic) near the end of the
hoses opposite the manifold gauge.
PRECAUTIONSMANUAL
Precautions for Service Equipment
HA-6

RHA273D
SERVICE COUPLERSNJHA0117S06Never attempt to connect HFC-134a (R-134a) service couplers to
an CFC-12 (R-12) A/C system. The HFC-134a (R-134a) couplers
will not properly connect to the CFC-12 (R-12) system. However, if
an improper connection is attempted, discharging and contamina-
tion may occur.
Shut-off valve rotation A/C service valve
Clockwise Open
Counterclockwise Close
RHA274D
REFRIGERANT WEIGHT SCALENJHA0117S07Verify that no refrigerant other than HFC-134a (R-134a) and speci-
fied lubricants have been used with the scale. If the scale controls
refrigerant flow electronically, the hose fitting must be 1/2″-16
ACME.
CALIBRATING ACR4 WEIGHT SCALENJHA0117S09Calibrate the scale every three months.
To calibrate the weight scale on the ACR4:
1. PressShift/ResetandEnterat the same time.
2. Press8787.“A1” will be displayed.
3. Remove all weight from the scale.
4. Press0, then pressEnter.“0.00” will be displayed and change
to “A2”.
5. Place a known weight (dumbbell or similar weight), between
4.5 and 36.3 kg (10 and 80 lb) on the center of the weight
scale.
6. Enter the known weight using four digits. (Example 10 lb =
“10.00”, 10.5 lb = “10.50”)
7. PressEnter— the display returns to the vacuum mode.
8. PressShift/ResetandEnterat the same time.
9. Press6— the known weight on the scale is displayed.
10. Remove the known weight from the scale. “0.00” will be dis-
played.
11. PressShift/Resetto return the ACR4 to the program mode.
CHARGING CYLINDERNJHA0117S08Using a charging cylinder is not recommended. Refrigerant may be
vented into air from cylinder’s top valve when filling the cylinder
with refrigerant. Also, the accuracy of the cylinder is generally less
than that of an electronic scale or of quality recycle/recharge
equipment.
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PRECAUTIONSMANUAL
Precautions for Service Equipment (Cont’d)
HA-7

Trouble Diagnoses Introduction=NJRS0043CAUTION:
Do not use electrical test equipment on any circuit related to the SRS unless instructed to in this
Service Manual. SRS wiring harnesses can be identified by yellow harness connector.
Do not attempt to repair, splice or modify the SRS wiring harness. If the harness is damaged,
replace it with a new one.
Keep ground portion clean.
DIAGNOSIS FUNCTIONNJRS0043S01The SRS self-diagnosis results can be read by using “AIR BAG” warning lamp and/or CONSULT-II. The read-
ing of these results is accomplished using one of two modes — “User mode” and“Diagnosis mode”.
The User mode is exclusively prepared for the customer (driver). This modewarns the driver of a system
malfunction through the operation of the “AIR BAG” warning lamp.
The Diagnosis mode allows the technician to locate and inspect the malfunctioning part.
The mode applications for the “AIR BAG” warning lamp and CONSULT-II are as follows:
User mode Diagnosis mode Display type
“AIR BAG” warning lamp X X ON-OFF operation
CONSULT-II — X Monitoring
NOTE:
Seat belt pre-tensioner malfunction is indicated by “AIR BAG” warning lamp.
DIAGNOSIS MODE FOR CONSULT-IINJRS0043S02“SELF-DIAG [CURRENT]”
A current Self-diagnosis result (also indicated by the number of warning lamp flashes in the Diagnosis
mode) is displayed on the CONSULT-II screen in real time. This refers to a malfunctioning part requiring
repairs.
“SELF-DIAG [PAST]”
Diagnosis results previously stored in the memory are displayed on the CONSULT-II screen. The stored
results are not erased until memory erasing is executed.
“TROUBLE DIAG RECORD”
With TROUBLE DIAG RECORD, diagnosis results previously erased by a reset operation can be displayed
on the CONSULT-II screen.
“ECU DISCRIMINATED NO.”
The diagnosis sensor unit for each vehicle model is assigned with its own, individual classification num-
ber. This number will be displayed on the CONSULT-II screen, as shown below. When replacing the diag-
nosis sensor unit, refer to the part number for the compatibility. After installation, replacement with a cor-
rect unit can be checked by confirming this classification number on the CONSULT-II screen.
For NISSAN MODEL N16, the diagnosis sensor unit classification numbers are as follows:
DESTINATION MODEL ECU DISCRIMINATED NO.
Europe3-DOOR HATCHBACKModels with single air bag and seat belt pre-
tensionerA917
Models with dual air bags and seat belt pre-
tensionerA904
Models with dual air bags, side air bag and
seat belt pre-tensionerA905
5-DOOR HATCHBACK
and SEDANModels with single air bag and seat belt pre-
tensionerA917
Models with dual air bags and seat belt pre-
tensionerA904
Models with dual air bags, side air bag and
seat belt pre-tensionerA918
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SUPPLEMENTAL RESTRAINT SYSTEM (SRS)
Trouble Diagnoses Introduction
RS-41
![NISSAN ALMERA N16 2003 Electronic Repair Manual HOW TO ERASE SELF-DIAGNOSIS RESULTS=NJRS0043S05With CONSULT-IINJRS0043S0501“SELF-DIAG [CURRENT]”
A current Self-diagnosis result is displayed on the CONSULT-II screen in real time.
After the malfu NISSAN ALMERA N16 2003 Electronic Repair Manual HOW TO ERASE SELF-DIAGNOSIS RESULTS=NJRS0043S05With CONSULT-IINJRS0043S0501“SELF-DIAG [CURRENT]”
A current Self-diagnosis result is displayed on the CONSULT-II screen in real time.
After the malfu](/manual-img/5/57350/w960_57350-3074.png)
HOW TO ERASE SELF-DIAGNOSIS RESULTS=NJRS0043S05With CONSULT-IINJRS0043S0501“SELF-DIAG [CURRENT]”
A current Self-diagnosis result is displayed on the CONSULT-II screen in real time.
After the malfunction is repaired completely, no malfunction is detectedon “SELF-DIAG [CURRENT]”.
“SELF-DIAG [PAST]”
Return to the “SELF-DIAG [CURRENT]” CONSULT-II screen by pushing “BACK” key of CONSULT-II and
select “SELF-DIAG [CURRENT]” in SELECT DIAG MODE. Touch “ERASE” in “SELF-DIAG [CURRENT]”
mode.
NOTE:
If the memory of the malfunction in “SELF-DIAG [PAST]” is not erased, the User mode shows the sys-
tem malfunction by the operation of the warning lamp even if the malfunction is repaired completely.
SRS701
“TROUBLE DIAG RECORD”
The memory of “TROUBLE DIAG RECORD” cannot be erased.
Without CONSULT-IINJRS0043S0502After a malfunction is repaired, switch the ignition “OFF” for at least onesecond, then back “ON”. Diagnosis
mode returns to the User mode. At that time, the self-diagnostic result is cleared.
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SUPPLEMENTAL RESTRAINT SYSTEM (SRS)
Trouble Diagnoses Introduction (Cont’d)
RS-43
![NISSAN ALMERA N16 2003 Electronic Repair Manual SRS772
7. Diagnostic codes are displayed on “SELF-DIAG [CURRENT]”.
SRS701
If no malfunction is detected on “SELF-DIAG [CURRENT]” but mal-
function is indicated by the “AIR BAG” warning lam NISSAN ALMERA N16 2003 Electronic Repair Manual SRS772
7. Diagnostic codes are displayed on “SELF-DIAG [CURRENT]”.
SRS701
If no malfunction is detected on “SELF-DIAG [CURRENT]” but mal-
function is indicated by the “AIR BAG” warning lam](/manual-img/5/57350/w960_57350-3082.png)
SRS772
7. Diagnostic codes are displayed on “SELF-DIAG [CURRENT]”.
SRS701
If no malfunction is detected on “SELF-DIAG [CURRENT]” but mal-
function is indicated by the “AIR BAG” warning lamp, go to DIAG-
NOSTIC PROCEDURE 4, page RS-56, to diagnose the following
situations:
Self-diagnostic result “SELF-DIAG [PAST]” (previously stored
in the memory) might not be erased after repair.
The SRS system malfunctions intermittently.
8. Touch “PRINT”.
9. Compare diagnostic codes to “CONSULT-II Diagnostic Code
Chart”, RS-51.
10. Touch “BACK” key of CONSULT-II until “SELECT SYSTEM”
appears in order to return to User mode from Diagnosis mode.
11. Turn ignition switch “OFF”, then turn off and disconnect
CONSULT-II, and disconnect both battery cables.
12. Repair the system as outlined by the “Repair order” in “CON-
SULT-II Diagnostic Code Chart”, that corresponds to the self-
diagnostic result. For replacement procedure of component
parts, refer to RS-26.
13. After repairing the system, go to DIAGNOSTIC PROCEDURE
3, page RS-54 for final checking.
CONSULT-II DIAGNOSTIC CODE CHART (“SELF-DIAG
[CURRENT]”)
NJRS0048S0102
Diagnostic item ExplanationRepair order
Recheck SRS at each
replacement.
NO DTC IS DETECTED When malfunction is indicated
by the “AIR BAG” warning
lamp in User modeSelf-diagnostic result “SELF-
DIAG [PAST]” (previously
stored in the memory) might
not be erased after repair.
Intermittent malfunction has
been detected in the past.Go to DIAGNOSTIC PRO-
CEDURE 3 (RS-54).
No malfunction is detected. Go to DIAGNOSTIC PRO-
CEDURE 3 (RS-54).
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SUPPLEMENTAL RESTRAINT SYSTEM (SRS)
Trouble Diagnoses with CONSULT-II (Cont’d)
RS-51
![NISSAN ALMERA N16 2003 Electronic Repair Manual SRS701
7. If no malfunction is detected on “SELF-DIAG [CURRENT]”,
repair of SRS is completed. Go to step 8.
If any malfunction is displayed on “SELF-DIAG [CURRENT]”,
the malfunctioning part is NISSAN ALMERA N16 2003 Electronic Repair Manual SRS701
7. If no malfunction is detected on “SELF-DIAG [CURRENT]”,
repair of SRS is completed. Go to step 8.
If any malfunction is displayed on “SELF-DIAG [CURRENT]”,
the malfunctioning part is](/manual-img/5/57350/w960_57350-3086.png)
SRS701
7. If no malfunction is detected on “SELF-DIAG [CURRENT]”,
repair of SRS is completed. Go to step 8.
If any malfunction is displayed on “SELF-DIAG [CURRENT]”,
the malfunctioning part is not repaired completely or another
malfunctioning part is detected. Go to DIAGNOSTIC PROCE-
DURE 2, page RS-50, and repair malfunctioning part com-
pletely.
SRS773
8. 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.
SRS697
9. Touch “BACK” key of CONSULT-II to “SELECT SYSTEM”
screen. Touch “SELF-DIAG [PAST]”.
SRS702
10. Check that no malfunction is detected on “SELF-DIAG
[PAST]”.
11. Touch “BACK” key of CONSULT-II until “SELECT SYSTEM”
appears in order to return to User mode from Diagnosis mode.
12. Turn ignition switch “OFF”, then turn off and disconnect CON-
SULT-II.
13. Go to “SRS Operation Check”, page RS-49 to check SRS
operation by using “AIR BAG” warning lamp with User mode.
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SUPPLEMENTAL RESTRAINT SYSTEM (SRS)
Trouble Diagnoses with CONSULT-II (Cont’d)
RS-55
![NISSAN ALMERA N16 2003 Electronic Repair Manual SRS697
6. Touch “SELF-DIAG [PAST]”.
SRS700
7. If diagnostic codes are displayed on “SELF-DIAG [PAST]”, go
to step 10.
SRS702
If no malfunction is detected on “SELF-DIAG [PAST]”, touch
“B NISSAN ALMERA N16 2003 Electronic Repair Manual SRS697
6. Touch “SELF-DIAG [PAST]”.
SRS700
7. If diagnostic codes are displayed on “SELF-DIAG [PAST]”, go
to step 10.
SRS702
If no malfunction is detected on “SELF-DIAG [PAST]”, touch
“B](/manual-img/5/57350/w960_57350-3088.png)
SRS697
6. Touch “SELF-DIAG [PAST]”.
SRS700
7. If diagnostic codes are displayed on “SELF-DIAG [PAST]”, go
to step 10.
SRS702
If no malfunction is detected on “SELF-DIAG [PAST]”, touch
“BACK” and go back to “SELECT DIAG MODE”.
SRS697
8. Touch “TROUBLE DIAG RECORD”.
NOTE:
With “TROUBLE DIAG RECORD”, diagnosis results previ-
ously erased by a reset operation can be displayed.
SRS704
9. Diagnostic code is displayed on “TROUBLE DIAG RECORD”.
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SUPPLEMENTAL RESTRAINT SYSTEM (SRS)
Trouble Diagnoses with CONSULT-II (Cont’d)
RS-57

4 CHECK DIAGNOSIS SENSOR UNIT
Connect CONSULT-II and touch “START”.
Is “AIR BAG” displayed on CONSULT-II?
SRS771
YesorNo
Ye s G O T O 5 .
No Visually check the wiring harness connection of diagnosis sensor unit.If the harness
connection check result is OK, replace diagnosis sensor unit.
5 CHECK HARNESS CONNECTION
Is harness connection between warning lamp and diagnosis sensor unit OK?
OK or NG
OK Replace diagnosis sensor unit.
NG Connect “AIR BAG” warning lamp and diagnosis sensor unit connector properly. If “AIR
BAG” warning lamp still does not go off, replace harness.
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SUPPLEMENTAL RESTRAINT SYSTEM (SRS)
Trouble Diagnoses: “AIR BAG” Warning Lamp Does Not Turn Off (Cont’d)
RS-69