2004 NISSAN TERRANO check engine

INSPECTION/REVOLUTION SIGNAL
CHECK ECM OUTPUT SIGNAL.
1. Start engine.
2. Check voltage between combination meter terminal 23 and ground at idle
and 2,000 rpm.
Higher rpm = Higher voltage
Lower rpm = Lower voltage
Voltage should change with rpm.
OK
ENG Check harness for open or
short between ECM and
meter.
Engine revolution signal is OK.
INSPECTION/FUEL LEVEL SENSOR UNIT
CHECK GROUND CIRCUIT FOR FUEL
LEVEL SENSOR UNIT.
1. Disconnect fuel level sensor unit har-
ness connector.
2. Check continuity between fuel level sensor unit terminal 3 and ground.
Continuity should exist.
OK
ENG Repair harness or connec-
tor.
CHECK FUEL LEVEL SENSOR UNIT.
Refer to ªFUEL LEVEL SENSOR UNIT
CHECKº (EL-98).
OK
ENGReplace fuel level sensor
unit.
CHECK HARNESS FOR OPEN OR
SHORT.
1. Disconnect fuel level sensor unit har-
ness connector and combination meter
harness connector.
2. Check continuity between combination meter terminal 13 and fuel level sensor
unit terminal 2 (TD27Ti engine) or 1
(ZD30DDTi engine).
Continuity should exist.
3. Check continuity between combination meter terminal 13 and ground.
Continuity should not exist.ENG Repair harness or connec-
tor.
YEL881E
YEL882E
YEL883E
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METER AND GAUGES
Trouble Diagnoses (Cont'd)
EL-96
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Electrical Components Inspection
DIODE CHECK
ICheck continuity using an ohmmeter.
I Diode is functioning properly if test results are as shown in the
figure at left.
I Check diodes at the combination meter harness connector
instead of on the combination meter assembly. Refer to ªWarn-
ing Lamp/Wiring Diagramº, EL-100.
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.
Oil Pressure Switch Check
Check the continuity between the terminals of oil pressure switch
and body ground.
Oil pressure
kPa (bar, kg/cm2, psi) Continuity
Engine start More than 10 - 20 (0.10
- 0.20, 0.1 - 0.2, 1.4 - 2.8) NO
Engine stop Less than 10 - 20 (0.10 -
0.20, 0.1 - 0.2, 1.4 - 2.8) YES
SEL901F
SEL748K
WARNING LAMPS AND CHIME
EL-110
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Trouble Diagnoses
SymptomPossible cause Repair order
Radio inoperative (no digital
display and no sound from
speakers). 1. 10A Fuse
2. Poor radio ground
3. Radio 1. Check 10A fuse [No.
3 , located in fuse block (J/B)].
Turn ignition switch ON and verify battery positive volt-
age is present at terminal q
3of radio.
2. Check radio ground.
3. Remove radio for repair.
Radio controls are
operational, but no sound is
heard from any speaker. 1. Radio output
2. Radio
1. Check radio output voltages.
2. Remove radio for repair.
Radio presets are lost when
ignition switch is turned OFF. 1. 15A fuse
2. Radio 1. Check 15A fuse [No.
33 , located in fuse and fusible
box] and verify battery positive voltage is present at
terminal q
9of radio.
2. Remove radio for repair.
Individual speaker is noisy or
inoperative. 1. Speaker
2. Radio output
3. Speaker circuit
4. Radio 1. Check speaker.
2. Check radio output voltages.
3. Check wires for open or short between radio and
speaker.
4. Remove radio for repair.
Radio stations are weak or
noisy. 1. Antenna
2. Poor radio ground
3. Radio 1. Check antenna.
2. Check radio ground.
3. Remove radio for repair.
Radio generates noise in AM
and FM modes with engine
running. 1. Poor radio ground
2. Loose or missing ground bonding
straps
3. Ignition condenser or rear window defogger noise suppressor con-
denser
4. Alternator
5. Ignition coil or secondary wiring
6. Radio 1. Check radio ground.
2. Check ground bonding straps.
3. Replace ignition condenser or rear window defogger
noise suppressor condenser.
4. Check alternator
5. Check ignition coil and secondary wiring.
6. Remove radio for repair.
Radio generates noise in AM
and FM modes with accesso-
ries on (switch pops and
motor noise). 1. Poor radio ground
2. Antenna
3. Accessory ground
4. Faulty accessory 1. Check radio ground.
2. Check antenna.
3. Check accessory ground.
4. Replace accessory.
AUDIO
EL-147
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DIAGNOSTIC PROCEDURE 6
(NATS release signal check)
Does engine start properly?
Ye s
ENoCheck NATS system.
CHECK NATS SIGNAL CIRCUIT.
1) Disconnect control unit connector and
NATS IMMU connector.
2) Check continuity between control unit terminal
U26and NATS IMMU termi-
nal q
3.
Continuity should exist.
3) Check continuity between control unit terminal
U26and ground.
Continuity should not exist.
OK
ENG Repair harness.
CHECK NATS RELEASE SIGNAL.
1) Connect control unit connector and
NATS IMMU connector.
2) Check voltage between control unit terminal
U26and ground.
OK
ENG Check NATS system.
Replace time control unit.
Ignition switch condition Voltage
(V)
LOCK 12
More than 10 seconds after ignition
switch turned to ªONº position
For 10 seconds after ignition
switch turned to ªONº position Pulse
YEL314D
YEL315D
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POWER DOOR LOCK Ð SUPER LOCK Ð
Trouble Diagnoses (Cont'd)
EL-200
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HOW TO READ SELF-DIAGNOSTIC RESULTS
NATS SELF-DIAGNOSTIC RESULTS ITEM CHART
Detected items
(NATS program card screen terms) Malfunction is detected when ... Reference page
CHAIN OF ECM-IMMU Communication impossible between ECM and IMMU EL-234
DIFFERENCE OF KEY IMMU can receive the key ID signal but the result of ID verification between key ID and IMMU
is NG. EL-236
CHAIN OF IMMU-KEY IMMU cannot receive the key ID signal. Or the registered ID signal from dongle unit can not be
received when the IMMU request the ID. EL-237
ID DISCORD, IMM-ECM The result of ID verification between IMMU and ECM is NG. System initialization is required. EL-239
DON'T ERASE BEFORE
CHECKING ENG DIAG All engine trouble codes except NATS trouble code have been detected in ECM. EL-231
LOCK MODE When 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.
I
Unregistered ignition key is used.
I IMMU or ECM is malfunctioning. EL-240
SEL308W
NATS (Nissan Anti-Theft System)
CONSULT-II (Cont'd)
EL-230
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Trouble Diagnoses
WORK FLOW
CHECK IN
Listen to customer complaints or request. (Get symptoms)
TROUBLEKEY SERVICE REQUEST (Additional key ID registration)H
Verify the security indicator and MI*.INITIALIZATION
(Refer to CONSULT-II operation
manual NATS.)
EUsing the CONSULT-II program card for NATS check the
ªSELF-DIAG RESULTSº with CONSULT-II.F
Self-diagnostic results referring to NATS, but no information
about engine self-diagnostic results is displayed on CONSULT-
II.
Turn ignition switch ªOFFº.
Repair NATS.
(If necessary, carry out ªC/U INITIALIZATIONº with CONSULT-
II.)
Turn ignition switch ªONº.
Erase the NATS ªSELF-DIAG RESULTSº by using CONSULT-
II. (Touch ªERASEº.)
Start the engine.
NGVerify no lighting up of the security indicator.
OK
CHECK OUT
Perform running test with CONSULT-II in engine ªSELF-DIAG
RESULTSº mode.
NGVerify ªNO DTC IS DETECTEDº displayed on the CONSULT-II
screen.
OK
CHECK OUT
Self-diagnostic results referring to NATS and ªDON'T
ERASE BEFORE CHECKING ENG DIAGº are displayed on
CONSULT-II.
(This means that engine trouble data has been detected in
ECM.)
Turn ignition switch ªOFFº.
Repair NATS according to self-diagnostic results referring to
NATS.
(If necessary, carry out ªC/U INITIALIZATIONº with CON-
SULT-II.)
Do not erase the NATS ªSELF-DIAG RESULTSº by using
CONSULT-II.
Check the engine ªSELF-DIAG RESULTSº with CONSULT-II
by using the CONSULT-II generic program card.
(Engine diagnostic software included)
OK
F
Repair engine control system (Refer to EC section.) when
self-diagnostic results except ªNATS MALFUNCTIONº are
detected. When only ªNATS MALFUNCTIONº is detected,
erase the self-diagnostic results and go to the next step.
Start the engine. Does the engine start properly?NG
Erase the NATS and engine ªSELF-DIAG RESULTSº by
using the CONSULT-II program card for NATS and generic
program card.
Start the engine.
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NATS (Nissan Anti-Theft System)
EL-231
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SYMPTOM MATRIX CHART 1
(Self-diagnosis related item)
SYMPTOMDisplayed ªSELF-DIAG
RESULTSº on
CONSULT-II screen DIAGNOSTIC
PROCEDURE
(Reference page) SYSTEM
(Malfunctioning part or mode) REFERENCE PART NO.
OF ILLUSTRATION ON NEXT PAGE
I Security indicator light-
ing up*
I Engine does not start CHAIN OF ECM-IMMU
PROCEDURE 1
(EL-234) Open circuit in battery voltage line
of IMMU circuit
C1
Open circuit in ignition line of IMMU
circuit C2
Open circuit in ground line of IMMU
circuit C3
Open circuit in communication line
between IMMU and ECM C4
Short circuit between IMMU and
ECM communication line and bat-
tery voltage line C4
Short circuit between IMMU and
ECM communication line and
ground line C4
ECM B
IMMU A
DIFFERENCE OF KEY PROCEDURE 2
(EL-236) Unregistered key D
IMMU A
CHAIN OF IMMU-KEY PROCEDURE 3
(EL-237) Malfunction of key ID chip E
IMMU A
Open circuit in ground line of
dongle circuit
C6
Open or short circuit in communica-
tion line between IMMU and dongle
control unit C5
Dongle control unit G
ID DISCORD, IMM-ECM PROCEDURE 4
(EL-239) System initialization has not yet
been completed.
F
ECM B
LOCK MODE PROCEDURE 5
(EL-240) LOCK MODE D
I MI staying ON
I Security indicator light-
ing up* DON'T ERASE BEFORE
CHECKING ENG DIAG
WORK FLOW
(EL-231) Engine trouble data and NATS
trouble data have been detected in
ECM.
Ð
*: When NATS detects trouble, the security indicator lights up while ignition key is in the ªONº position.
*: When the vehicle is equipped with dongle control unit (RHD models), the security indicator blinks 6 times just after ignition switch is turned
to ON. Then the security indicator lights up while ignition key is in the ªONº position.
NATS (Nissan Anti-Theft System)
Trouble Diagnoses (Cont'd)
EL-232
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DIAGNOSTIC PROCEDURE 3
Self-diagnostic results:
ªCHAIN OF IMMU-KEYº displayed on CONSULT-II screen
Confirm SELF-DIAGNOSTIC
RESULTS ªCHAIN OF IMMU-KEYº
displayed on CONSULT-II screen.
OK
CHECK NATS IGNITION KEY ID CHIP.
Can the engine start with another regis-
tered NATS ignition key?
No
EYe s IIgnition key ID chip is
malfunctioning.
1. Replace the ignition key.
Ref. part No. E
2. Perform initialization with CONSULT-II.
For the initialization
procedure, refer to
ªCONSULT-II operation
manual NATSº.
CHECK NATS IMMU INSTALLATION.
Refer to ªHow to Replace NATS IMMUº in
EL-242.
OK
ENG Reinstall NATS IMMU cor-
rectly.
Is this vehicle equipped with dongle con-
trol unit (RHD models)?
Ye s
ENoIMMU is malfunctioning.
1. Replace NATS IMMU.
Ref part No. A
2. Perform initialization with CONSULT-II
For the initialization
procedure, refer to
ªCONSULT-II operation
manual NATSº.
qA
YEL480B
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NATS (Nissan Anti-Theft System)
Trouble Diagnoses (Cont'd)
EL-237
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