2001 NISSAN ALMERA check engine

SEL977W
Electrical Components InspectionNJEL0051FUEL WARNING LAMP OPERATION CHECKNJEL0051S011. Turn ignition switch ªOFFº.
2. Disconnect fuel level sensor unit harness connector B29
(Sedan with Gasoline engine or Hatchback) or B30 (Sedan
with Diesel engine).
3. Connect a resistor (80W) between fuel level sensor unit har-
ness connector terminals 4 and 1 (Sedan with Gasoline engine
or Hatchback) or 1 and 3 (Sedan with Diesel engine).
4. Turn ignition switch ªONº.
The fuel warning lamp should come on.
NOTE:
For QG Engine Only
ECM might store the DTC P0180 during this inspection. If the DTC
is stored in ECM memory, erase the DTC after reconnecting the
fuel level sensor unit and fuel pump harness connector. Refer to
EC-70, ªHOW TO ERASE EMISSION-RELATED DIAGNOSTIC
INFORMATIONº, ªEmission-related Diagnostic Informationº, ªON
BOARD DIAGNOSTIC SYSTEM DESCRIPTIONº.
MEL425F
OIL PRESSURE SWITCH CHECKNJEL0051S02
Oil pressure
kPa (bar, kg/cm2, psi)Continuity
Engine runningMore than 10 - 20
(0.10 - 0.20, 0.1 - 0.2,
1-3)No
Engine not runningLess than 10 - 20
(0.10 - 0.20, 0.1 - 0.2,
1-3)Ye s
Check the continuity between the terminals of oil pressure switch
and body ground.
SEL901F
DIODE CHECKNJEL0051S03+Check continuity using an ohmmeter.
+Diode is functioning properly if test results are as shown in the
figure at left.
+Check diodes at the combination meter harness connector
instead of on the combination meter assembly. Refer to
EL-185, ªWARNING LAMPº wiring diagrams.
NOTE:
Specification may vary depending on the type of tester. Before
performing this inspection, be sure to refer to the instruction
manual for the tester to be used.
WARNING LAMPS
Electrical Components Inspection
EL-194

Trouble DiagnosesNJEL0385AUDIO UNITNJEL0385S05
Symptom Possible causes Repair order
Audio unit inoperative (no
digital display and no
sound from speakers).1. 10A fuse
2. Poor audio unit case ground
3. Audio unit1. Check 10A fuse [No. 1, located in fuse block (J/B)].
Turn ignition switch ON and verify that battery posi-
tive voltage is present at terminal 3 of audio unit.
2. Check audio unit case ground.
3. Remove audio unit for repair.
Audio unit presets are lost
when ignition switch is
turned OFF.1. 15A fuse
2. Audio unit1. Check 15A fuse [No. 32, located in fuse block (J/B)]
and verify that battery positive voltage is present at
terminal 9 of audio unit.
2. Remove audio unit for repair.
Individual rear speaker is
noisy or inoperative.1. Each speaker
2. Output circuit to each speaker1. Check speaker.
2. Check the output circuits to each speaker
+between audio unit and speaker amp.
+between speaker amp. and each speaker.
AM/FM stations are weak
or noisy.1. Roof antenna
2. Audio unit ground
3. Audio unit1. Check roof antenna.
2. Check audio unit ground condition.
3. Remove audio unit for repair.
Audio unit generates noise
in AM and FM modes with
engine running.1. Poor audio unit ground
2. Loose or missing ground bonding straps
3. Ignition condenser or rear window defog-
ger noise suppressor condenser
4. Ignition coil or secondary wiring
5. Audio unit1. Check audio unit ground.
2. Check ground bonding straps.
3. Replace ignition condenser or rear window defogger
noise suppressor condenser.
4. Check ignition coil and secondary wiring.
5. Remove audio unit for repair.
Audio unit generates noise
in AM and FM modes with
accessories on (switch
pops and motor noise).1. Poor audio unit ground
2. Antenna
3. Accessory ground
4. Faulty accessory1. Check audio unit ground.
2. Check antenna.
3. Check accessory ground.
4. Replace accessory.
CD AUTOCHANGERNJEL0385S06Testing Magazines and DiscsNJEL0385S06011. Confirm discs are installed correctly into the magazine (not upside down).
2. Visually inspect/compare the customer's discs with each other and other discs.
Identify any of the following conditions:
+Discs with a large outside diameter. [Normal size is 120 mm (4.72 in).]
+Discs with rough or lipped edges.
+Discs with excessive thickness [Normal size is 1.2 mm (0.047 in).]
+Discs with scratches, abrasions, or pits on the surface.
+Discs with grease/oil, fingerprints, foreign material.
+Discs are warped due to excessive heat exposure.
3. Slide/place the discs in and out of the various magazine positions.
Identify any discs and/or positions that require additional force for placement/ejection. If interference
(sticking, excessive tensions) is found, replace the magazine or the discs.
NOTE:
+Discs which are marginally out of specification (ex. dirty, scratched and so on) may play correctly
on a home stereo.
However, when used in the automotive environment skipping may occur due to the added vehicle
movement and/or vibration due to road conditions. Autochangers should not be replaced when
discs are at fault.
+Use a soft damp cloth to wipe the discs starting from the center outward in radial direction. Never
use chemical cleaning solutions to clean the discs.
AUDIO
Trouble Diagnoses
EL-280

NATS SELF-DIAGNOSTIC RESULTS ITEM CHART=NJEL0410S04
Detected items (NATS program card
screen terms)P No. Code
(Self-diag-
nostic result
of ªENGINEºMalfunction is detected when .....
Reference page
ECM INT CIRC-IMMUNATS MAL-
FUNCTION
P1613The malfunction of ECM internal circuit of IMMU com-
munication line is detected. EL-435
CHAIN OF ECM-IMMUNATS MAL-
FUNCTION
P1612Communication impossible between ECM and IMMU
(In rare case, ªCHAIN OF ECM-IMMUº might be stored
during key registration procedure, even if the system is
not malfunctioning.)EL-436
DIFFERENCE OF KEYNATS MAL-
FUNCTION
P1615IMMU can receive the key ID signal but the result of ID
verification between key ID and IMMU is NG. EL-440
CHAIN OF IMMU-KEYNATS MAL-
FUNCTION
P1614IMMU cannot receive the key ID signal.
EL-441
ID DISCORD, IMM-ECMNATS MAL-
FUNCTION
P1611The result of ID verification between IMMU and ECM is
NG. System initialization is required. EL-443
LOCK MODENATS MAL-
FUNCTION
P1610When the starting operation is carried out five or more
times consecutively under the following conditions,
NATS will shift the mode to one which prevents the
engine from being started.
+Unregistered ignition key is used.
+IMMU or ECM's malfunctioning.EL-446
DON'T ERASE BEFORE
CHECKING ENG DIAGÐAll engine trouble codes except NATS trouble code has
been detected in ECM.EL-432
NATS (NISSAN ANTI-THEFT SYSTEM)
CONSULT-II (Cont'd)
EL-431

SYMPTOMDisplayed ªSELF-DIAG
RESULTSº on CON-
SULT-II screen.DIAGNOSTIC PROCE-
DURE
(Reference page)SYSTEM
(Malfunctioning part or
mode)REFERENCE PART
NO. OF ILLUSTRATION
ON SYSTEM DIAGRAM
+MIL staying ON
+Security indicator
lighting up*DON'T ERASE
BEFORE CHECKING
ENG DIAGWORK FLOW
(EL-432)Engine trouble data and
NATS trouble data have
been detected in ECMÐ
*: When NATS detects trouble, the security indicator lights up while ignition key is in the ªONº position.
*: When the vehicle is equipped with a dongle unit (RHD models for Europe), the security indicator blinks 6 times just after the ignition
switch is turned to ON. Then the security indicator lights up while the ignition key is in the ªONº position.
SYMPTOM MATRIX CHART 2NJEL0411S03(Non self-diagnosis related item)
SYMPTOMDIAGNOSTIC PROCEDURE
(Reference page)SYSTEM
(Malfunctioning part or mode)REFERENCE PART NO. OF
ILLUSTRATION ON SYSTEM
DIAGRAM
Security ind. does not light up.PROCEDURE 6
(EL-444)Security ind. Ð
Open circuit between Fuse and
IMMUÐ
Continuation of initialization
modeÐ
IMMU A
Security ind. does not blink just
after initialization even if the
vehicle is equipped with dongle
unit.
PROCEDURE 8
(EL-448)NATS might be initialized with-
out connecting dongle unit
properly.Ð
Open circuit in ground line of
dongle unit circuitC6
Security ind. does not blink just
after ignition switch is turned to
ON when some malfunction
related to NATS is detected
even if the vehicle is equipped
with dongle unit.Open or short circuit in com-
munication line between IMMU
and dongle unitC5
Dongle unit G
DIAGNOSTIC SYSTEM DIAGRAMNJEL0411S04
SEL028X
NATS (NISSAN ANTI-THEFT SYSTEM)
Trouble Diagnoses (Cont'd)
EL-434

DIAGNOSTIC PROCEDURE 2=NJEL0411S06Self-diagnostic results:
ªCHAIN OF ECM-IMMUº displayed on CONSULT-II screen
1 CONFIRM SELF-DIAGNOSTIC RESULTS
Confirm SELF-DIAGNOSTIC RESULTS ªCHAIN OF ECM-IMMUº displayed on CONSULT-II screen.
NOTE:
In rare case, ªCHAIN OF ECM-IMMUº might be stored during key registration procedure, even if the system is not mal-
functioning.
SEL366X
Is CONSULT-II screen displayed as above?
Ye s©GO TO 2.
No©GO TO SYMPTOM MATRIX CHART 1.
2 CHECK POWER SUPPLY CIRCUIT FOR IMMU
1. Disconnect IMMU connector.
2. Check voltage between terminal 8 of IMMU and ground with CONSULT-II or tester.
SEL302WB
OK or NG
OK©GO TO 3.
NG©Check the following
+10A fuse (No. 36, located in the fusible link and fuse box) Ð (Gasoline engine)
+20A fuse (No. 34, located in the fusible link and fuse box) Ð (Diesel engine)
+Harness for open or short between fuse and IMMU connector
Ref. Part No. C1
NATS (NISSAN ANTI-THEFT SYSTEM)
Trouble Diagnoses (Cont'd)
EL-436

5 CHECK COMMUNICATION LINE OPEN CIRCUIT
1. Disconnect ECM connector.
2. Check harness continuity between ECM terminal 116 (Gasoline engine) or 410 (Diesel engine) and IMMU terminal 1.
SEL305WB
OK or NG
OK©GO TO 6.
NG©Repair harness or connector.
Ref. part No. C4
6 CHECK COMMUNICATION LINE BATTERY SHORT CIRCUIT
1. Turn ignition ON.
2. Check voltage between ECM terminal 116 (Gasoline engine) or 410 (Diesel engine) or IMMU terminal 1 and ground.
SEL306WB
OK or NG
OK©GO TO 7.
NG©Communication line is short-circuited with battery voltage line or ignition switch ON line.
Repair harness or connectors.
Ref. part No. C4
NATS (NISSAN ANTI-THEFT SYSTEM)
Trouble Diagnoses (Cont'd)
EL-438

7 CHECK COMMUNICATION LINE GROUND SHORT CIRCUIT
1. Turn ignition switch OFF.
2. Check continuity between ECM terminal 116 (Gasoline engine) or 410 (Diesel engine) or IMMU terminal 1 and ground.
SEL307WB
OK or NG
OK©GO TO 8.
NG©Communication line is short-circuited with ground line.
Repair harness or connectors.
Ref. part No. C4
8 SIGNAL FROM ECM TO IMMU CHECK
1. Check the signal between ECM terminal 116 (Gasoline engine) or 410 (Diesel engine) and ground with CONSULT-II or
oscilloscope when ignition switch is turned ªONº.
2. Make sure signals which are shown in the figure below can be detected during 750 msec. just after ignition switch is
turned ªONº.
SEL730W
OK or NG
OK©IMMU is malfunctioning.
Replace IMMU.Ref. part No. A
Perform initialization with CONSULT-II.
For the operation of initialization, refer to ªCONSULT-II Operation Manual NATSº.
NG©ECM is malfunctioning.
Replace ECM.Ref. part No. B
Perform initialization with CONSULT-II.
For the operation of initialization, refer to ªCONSULT-II Operation Manual NATSº.
NATS (NISSAN ANTI-THEFT SYSTEM)
Trouble Diagnoses (Cont'd)
EL-439

DIAGNOSTIC PROCEDURE 4=NJEL0411S08Self-diagnostic results:
ªCHAIN OF IMMU-KEYº displayed on CONSULT-II screen
1 CONFIRM SELF-DIAGNOSTIC RESULTS
Confirm SELF-DIAGNOSTIC RESULTS ªCHAIN OF IMMU-KEYº displayed on CONSULT-II screen.
SEL368X
Is CONSULT-II screen displayed as above?
Ye s©GO TO 2.
No©GO TO SYMPTOM MATRIX CHART 1.
2 CHECK NATS IGNITION KEY ID CHIP
Start engine with another registered NATS ignition key.
Does the engine start?
Ye s©Ignition key ID chip is malfunctioning.
Replace the ignition key.
Ref. part No. E
Perform initialization with CONSULT-II.
For initialization, refer to ªCONSULT-II Operation Manual NATSº.
No©Models without dongle unit
IMMU is malfunctioning.
Replace IMMU.Ref. part No. A
Perform initialization with CONSULT-II.
For initialization, refer to ªCONSULT-II Operation Manual NATSº.
Models with dongle unit
GO TO 3.
3 CHECK HARNESS CONNECTOR CONNECTION
Check harness connector connection between M31 and M102.
Does the engine start?
Ye s©System is OK. (The malfunction is caused by improper connector connection.)
No©GO TO 4.
NATS (NISSAN ANTI-THEFT SYSTEM)
Trouble Diagnoses (Cont'd)
EL-441