2002 NISSAN TERRANO check engine

Trouble Diagnoses
Symptom Possible cause Repair order
Radio inoperative (no digital
display and no sound from
speakers).1. 10A Fuse
2. Poor radio case ground
3. Radio1. Check 10A fuse [No.
3 , located in fuse block (J/B)].
Turn ignition switch ON and verify battery positive volt-
age is present at terminalq
3of radio.
2. Check radio case ground.
3. Remove radio for repair.
Radio controls are
operational, but no sound is
heard from any speaker.1. Radio output
2. Radio1. Check radio output voltages.
2. Remove radio for repair.
Radio presets are lost when
ignition switch is turned OFF.1. 15A fuse
2. Radio1. Check 15A fuse [No.
35 , located in fuse and fusible
box] and verify battery positive voltage is present at
terminalq
9of radio.
2. Remove radio for repair.
Individual speaker is noisy or
inoperative.1. Speaker
2. Radio output
3. Speaker circuit
4. Radio1. 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. Radio1. 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. Radio1. 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 accessory1. Check radio ground.
2. Check antenna.
3. Check accessory ground.
4. Replace accessory.
AUDIO
EL-124

DIAGNOSTIC PROCEDURE 6
(NATS release signal check)
Does engine start properly?
Ye s
ENo
Check 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-
nalq
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 super lock control unit.
Ignition switch conditionVoltage
[V]
LOCK
12
More than 10 seconds after ignition
switch turned to ªONº position
For 10 seconds after ignition
switch turned to ªONº positionPulse
YEL314D
YEL315D
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POWER DOOR LOCK Ð SUPER LOCK Ð
Trouble Diagnoses (Cont'd)
EL-166

HOW TO READ SELF-DIAGNOSTIC RESULTS
NATS SELF-DIAGNOSTIC RESULTS ITEM CHART
Detected items
(NATS program card screen
terms)P No. Code
(Self-diagnos-
tic result of
ªENGINEº)Malfunction is detected when ... Reference page
ECM INT CIRC-IMMUNATS MAL-
FUNCTION
P1613The malfunction of ECM internal circuit of IMMU communication line is
detected.EL-198
CHAIN OF ECM-IMMUNATS MAL-
FUNCTION
P1612Communication impossible between ECM and IMMU EL-199
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-201
CHAIN OF IMMU-KEYNATS MAL-
FUNCTION
P1614IMMU 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-202
ID DISCORD, IMM-ECMNATS MAL-
FUNCTION
P1611The result of ID verification between IMMU and ECM is NG. System initializa-
tion is required.EL-204
DON'T ERASE BEFORE
CHECKING ENG DIAGÐAll engine trouble codes except NATS trouble code have been detected in
ECM.EL-195
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 pre-
vents the engine from being started.
IUnregistered ignition key is used.
IIMMU or ECM is malfunctioning.EL-206
SEL308W
NATS (Nissan Anti-Theft System)
CONSULT-II (Cont'd)
EL-194

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*.INITIALISATION
(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-195

SYMPTOM MATRIX CHART 1
(Self-diagnosis related item)
SYMPTOMDisplayed ªSELF-DIAG
RESULTSº on
CONSULT-II screenDIAGNOSTIC
PROCEDURE
(Reference page)SYSTEM
(Malfunctioning part or mode)REFERENCE PART NO.
OF ILLUSTRATION ON
NEXT PAGE
ISecurity indicator light-
ing up*
IEngine does not startECM INT CIRC-IMMUPROCEDURE 1
(EL-198)ECM B
ISecurity indicator light-
ing up*
IEngine does not startCHAIN OF ECM-IMMUPROCEDURE 2
(EL-199)Open circuit in battery voltage line
of IMMU circuitC1
Open circuit in ignition line of IMMU
circuitC2
Open circuit in ground line of IMMU
circuitC3
Open circuit in communication line
between IMMU and ECMC4
Short circuit between IMMU and
ECM communication line and bat-
tery voltage lineC4
Short circuit between IMMU and
ECM communication line and
ground lineC4
ECM B
IMMU A
DIFFERENCE OF KEYPROCEDURE 3
(EL-201)Unregistered key D
IMMU A
CHAIN OF IMMU-KEYPROCEDURE 4
(EL-202)Malfunction of key ID chip E
IMMU A
Open circuit in ground line of
dongle circuitC6
Open or short circuit in communica-
tion line between IMMU and dongle
control unitC5
Dongle control unit G
ID DISCORD, IMM-ECMPROCEDURE 5
(EL-204)System initialisation has not yet
been completed.F
ECM B
LOCK MODEPROCEDURE 7
(EL-206)LOCK MODE D
IMI staying ON
ISecurity indicator light-
ing up*DON'T ERASE BEFORE
CHECKING ENG DIAGWORK FLOW
(EL-195)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-196

DIAGNOSTIC PROCEDURE 4
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 initialisation
with CONSULT-II.
For the initialisation
procedure, refer to
ªCONSULT-II operation
manual NATSº.
CHECK NATS IMMU INSTALLATION.
Refer to ªHow to Replace NATS IMMUº in
EL-208.
OK
ENG
Reinstall NATS IMMU cor-
rectly.
Is this vehicle equipped with dongle con-
trol unit (RHD models)?
Ye s
ENo
IMMU is malfunctioning.
1. Replace IMMU.
Ref part No. A
2. Perform initialisation
with CONSULT-II
For the initialisation
procedure, refer to
ªCONSULT-II operation
manual NATSº.
qA
YEL480B
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H
NATS (Nissan Anti-Theft System)
Trouble Diagnoses (Cont'd)
EL-202

qA
CHECK HARNESS CONNECTOR CON-
NECTION.
Check the following harness connector
connection.
M720
Does the engine start?
No
EYe s
System is OK.
(The malfunction is caused
by improper connector
connection.)
CHECK GROUND CIRCUIT FOR
DONGLE UNIT.
Check continuity between dongle control
unit terminalq
3and ground.
Continuity should exist.
Ye s
ENo
Repair harness.
CHECK INTERFACE CIRCUIT.
1. Check continuity between IMMU termi-
nalq
2and dongle control unit terminal
q
5(Open circuit check)
Continuity should exist.
2. Check continuity between IMMU termi-
nalq
2and ground. (Short circuit check)
Continuity should not exist.
Ye s
ENo
Repair harness.
Dongle unit is malfunctioning.
1. Replace dongle control unit.
2. Perform initialisation with CONSULT-II.
For the initialisation procedure, refer to
ªCONSULT-II operation manual NATSº.
YEL327D
YEL328D
YEL329D
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NATS (Nissan Anti-Theft System)
Trouble Diagnoses (Cont'd)
EL-203

DIAGNOSTIC PROCEDURE 6
ªSECURITY INDICATOR LAMP DOES NOT LIGHT UPº
Check 10A fuse (No.16 , located in the
fuse block).
OK
ENG
Replace fuse.
NATS INITIALISATION
1) Install the 10A fuse.
2) Perform initialisation with CON-
SULT-II.
For the operation of initialisation,
refer to ªCONSULT-II operation
manual NATSº.
Turn ignition switch ªOFFº.
Start engine and turn ignition switch
ªOFFº.
Check the security ind. lighting.
NG
EOK
INSPECTION END
Check voltage between combination meter
connector terminalq
27and ground.
Voltage: Battery voltage
OK
ENG
Check harness for open or
short between fuse and
combination meter.
CHECK SECURITY INDICATOR LAMP.
OK
ENG
Repair or replace combina-
tion meter.
CHECK NATS IMMU FUNCTION.
1. Connect NATS IMMU connector.
2. Disconnect combination meter connec-
tor.
3. Check continuity between NATS IMMU
terminalq
5and ground.
Continuity should exist intermit-
tently.
OK
ENG
NATS IMMU is malfunc-
tioning. Replace IMMU.
Perform initialisation
with CONSULT-II.
For the operation of
initialisation, refer to
ªCONSULT-II opera-
tion manual NATSº.
Check harness for open or short between
combination meter and NATS IMMU.
YEL330D
YEL331D
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NATS (Nissan Anti-Theft System)
Trouble Diagnoses (Cont'd)
EL-205