system NISSAN TERRANO 2002 Service Repair Manual

POWER SUPPLY AND GROUND CIRCUIT CHECK
Main power supply circuit check
Terminals Ignition switch position
!@OFF ACC ON
U09GroundBattery
voltageBattery
voltageBattery
voltage
U01Ground 0V 0VBattery
voltage
Ground circuit check
Terminals Continuity
U16- Ground Yes
NEL606
YEL336D
THEFT WARNING SYSTEM
Trouble Diagnoses (Cont'd)
EL-233

DIAGNOSTIC PROCEDURE 1-(1)
(Door switch check)
CHECK DOOR SWITCH INPUT SIGNAL.
Remove time control unit from fuse block.
Note: Junction block (J/B) is very frag-
ile. TCU should be removed carefully
to avoid breaking the locking bars.
Check continuity between fuse block (J/B)
and ground.
NG
EOK
Door switch is OK.
CHECK DOOR SWITCH.
1) Disconnect door switch connector.
2) Check continuity between door switch
terminals.
OK
ENG
Replace door switch.
Check the following.
IDoor switch ground condition (Except
driver side)
IHarness for open or short between
control unit and door switch
Termi-
nalsCondition Continuity
Driver
side door
B07Opened Yes
Closed No
Other
door
B01Opened Yes
Closed No
Terminals Condition Continuity
q
1- groundClosed No
Open Yes
YEL337D
YEL338D
H
H
THEFT WARNING SYSTEM
Trouble Diagnoses (Cont'd)
EL-234

DIAGNOSTIC PROCEDURE 1-(2)
(Hood switch check)
CHECK HOOD SWITCH INPUT SIGNAL.
Remove time control unit from fuse block.
Note: Junction block (J/B) is very frag-
ile. TCU should be removed carefully
to avoid breaking the locking bars.
Check continuity between control unit ter-
minal
U32and ground.
OK
EOK
Hood switch is OK.
CHECK HOOD SWITCH.
1. Disconnect hood switch connector.
2. Check continuity between hood switch
terminals.
OK
ENG
Replace hood switch.
Check the following.
IHood switch ground circuit
IHarness for open or short between con-
trol unit and hood switch
Condition Continuity
Hood is open. Yes
Hood is closed. No
Terminals Condition Continuity
q
1-q2Pushed No
Released Yes
YEL339D
YEL340D
H
H
THEFT WARNING SYSTEM
Trouble Diagnoses (Cont'd)
EL-235

DIAGNOSTIC PROCEDURE 2
(Security indicator check)
CHECK INDICATOR LAMP OUTPUT
SIGNAL.
1) Remove time control unit from fuse
block.
Note: Junction block (J/B) is very
fragile. TCU should be removed
carefully to avoid breaking the lock-
ing bars.
2) Check voltage between time control
unit terminal
U18and ground.
Battery voltage should exist.
NG
EOK
Security indicator lamp is
OK.
CHECK INDICATOR LAMP.
OK
ENG
Replace indicator lamp.
CHECK POWER SUPPLY CIRCUIT FOR
INDICATOR.
1) Disconnect security indicator connec-
tor.
2) Check voltage between indicator termi-
nalq
27and ground.
Battery voltage should exist.
OK
ENG
Check the following:
I10A fuse [No.
16,
located in the fuse block
(J/B)]
IHarness for open or
short between combina-
tion meter and fuse
Check harness for open or short between
security indicator and time control unit.
YEL603D
YEL341D
H
H
H
THEFT WARNING SYSTEM
Trouble Diagnoses (Cont'd)
EL-236

DIAGNOSTIC PROCEDURE 3
(Door unlock sensor check)
CHECK DOOR UNLOCK SENSOR INPUT SIG-
NAL.
Remove time control unit from fuse block.
Note: Junction block (J/B) is very fragile.
TCU should be removed carefully to avoid
breaking the locking bars.
Check continuity between time control unit termi-
nalsq
25,q35,q36and ground.
NG
EOK
Door unlock sensor
is OK.
CHECK DOOR UNLOCK SENSOR.
1. Disconnect door unlock sensor connector.
2. Check continuity between door unlock sensor
terminals.
OK
ENG
Replace door
unlock sensor.
Check the following:
IDoor unlock sensor ground circuit
IHarness for open or short between control unit
and door unlock sensor
Terminals
Condition Continuity
!@
Driver
side door
U35GroundLocked No
Unlocked Yes
Passen-
ger
side door
U36GroundLocked No
Unlocked Yes
Rear
door
U25GroundLocked No
Unlocked Yes
Terminals Condition Continuity
Front with
super lock
and rearq
2-q5Locked No
Unlocked Yes
Front with-
out super
lockq
2-q4Locked No
Unlocked Yes
YEL342D
YEL343D
H
H
THEFT WARNING SYSTEM
Trouble Diagnoses (Cont'd)
EL-237

DIAGNOSTIC PROCEDURE 4
(Door key cylinder switch check)
CHECK DOOR KEY CYLINDER SWITCH
INPUT SIGNAL (LOCK SIGNAL).
Remove time control unit from fuse block.
Note: Junction block (J/B) is very frag-
ile. TCU should be removed carefully
to avoid breaking the locking bars.
Check continuity between time control
unit connector terminal
U29and ground.
NG
EOK
Door key cylinder switch is
OK.
CHECK DOOR KEY CYLINDER
SWITCH.
1) Disconnect door key cylinder switch
connector.
2) Check continuity between door key
cylinder switch terminals.
OK
ENG
Replace key cylinder
switch.
Check the following:
IHarness connectors between key cylin-
der switch and time control unit
IDoor key cylinder switch ground circuit
IHarness for open or short-circuit
between super lock control unit and
door key cylinder.
Key cylinder switch operation Continuity
Between neutral and lock Yes
Unlock/neutral No
Terminals Key position Continuity
q
1-q2
Neutral No
Between neu-
tral and lockYe s
Unlock/neutral No
Full stroke
(Lock)No
NEL613
NEL614
H
H
THEFT WARNING SYSTEM
Trouble Diagnoses (Cont'd)
EL-238

DIAGNOSTIC PROCEDURE 5
(Theft warning horn alarm check)
CHECK THEFT WARNING HORN
ALARM OPERATION.
1. Remove time control unit from fuse
block.
Note: Junction block (J/B) is very
fragile. TCU should be removed
carefully to avoid breaking the lock-
ing bars.
2. Apply ground to time control unit con-
nector terminal
U43.
Does horn alarm activate?
No
EYe s
Horn alarm is OK.
Check theft warning horn relay.
OK
ENG
Replace.
CHECK POWER SUPPLY FOR THEFT
WARNING HORN RELAY.
1) Disconnect theft warning horn relay
connector.
2) Check voltage between terminalq
1and
ground, andq
3and ground.
Battery voltage should exist.
OK
ENG
Check the following:
I10A fuse (No.
16 ,
located in the fuse and
fusible link box)
IHarness for open or
short between theft
warning horn relay and
fuse
CHECK THEFT WARNING HORN RELAY
CIRCUIT.
1. Disconnect theft warning horn relay
connector.
2. Check continuity between theft warn-
ing horn relayq
2and time control unit
terminal
U43.
Continuity should exist.
3. Check continuity between theft warn-
ing horn relayq
5and theft warning
horn connector terminal.
Continuity should exist.
OK
ENG
Repair harness.
Check harness for open or short between
theft warning horn relay and time control
unit.
NEL615
NEL616
YEL344D
H
H
H
H
THEFT WARNING SYSTEM
Trouble Diagnoses (Cont'd)
EL-239

DIAGNOSTIC PROCEDURE 6
(Hazard lamp alarm check)
Push hazard switch to ON.
Check hazard lamp operation.
NG
EOK
Replace time control unit.
1. Remove time control unit from fuse
block (J/B).
Note: Junction block (J/B) is very
fragile. TCU should be removed
carefully to avoid breaking the lock-
ing bars.
2. Check harness continuity between
fuse block (J/B) terminals
U11and
U15and ground.
Continuity should exist.
OK
ENG
Check the following.
IHarness connectors
IFuse block (J/B)
ITurn signal lamps
IHarness between time
control unit and turn sig-
nal lamps, turn signal
lamps and ground.
Replace time control unit.
NEL618
H
H
THEFT WARNING SYSTEM
Trouble Diagnoses (Cont'd)
EL-240

Use the chart below to find out what each wiring
diagram code stands for.
Refer to the wiring diagram code in the alphabetical
index to find the location (page number) of each
wiring diagram.
Code Section Wiring Diagram Name
1STSIG AT A/T 1ST. SIGNAL
2NDSIG AT A/T 2ND. SIGNAL
3RDSIG AT A/T 3RD. SIGNAL
4THSIG AT A/T 4TH. SIGNAL
A/C, M HA MANUAL AIR CONDITIONER
A/CCUT EC AIR CONDITIONER CUT CONTROL
ABS BR ANTI-LOCK BRAKE SYSTEM
ACC/SW EC ACCELERATOR SWITCH (FC)
ACL/SW ECACCELERATOR POSITION
SWITCH
APS AT, ECACCELERATOR POSITION SEN-
SOR
AT/C EC A/T CONTROL
AUDIO EL AUDIO
BA/FTS ATA/T FLUID TEMPERATURE SEN-
SOR AND TCM POWER SUPPLY
BACK/L EL BACK-UP LAMP
BOOST ECTURBOCHARGER BOOST SEN-
SOR
BRK/SW EC BRAKE SWITCH
CHARGE SC CHARGING SYSTEM
CHIME EL WARNING CHIME
CIGAR EL CIGARETTE LIGHTER
CKPS ECCRANK SHAFT POSITION SEN-
SOR (OBD)
CLOCK EL CLOCK
COOL/F EC COOLING FAN CONTROL
D/LOCK EL POWER DOOR LOCK
DEF EL REAR WINDOW DEFOGGER
DTRL ELHEADLAMP Ð WITH DAYTIME
LIGHT SYSTEM
ECMRLY EC ECM RELAY
ECTS ECENGINE COOLANT TEMPERA-
TURE SENSOR
EGRC/V ECEGR VALVE AND EVAP CANISTER
PURGE CONTROL SOLENOID
VA LV E
EGVC/V EC EGR VOLUME CONTROL VALVE
ENGSS AT ENGINE SPEED SIGNAL
F/FOG EL FRONT FOG LAMP
Code Section Wiring Diagram Name
FTS ATA/T FLUID TEMPERATURE SEN-
SOR
GLOW EC QUICK GLOW SYSTEM
H/AIM ELHEADLAMP AIMING CONTROL
SYSTEM
H/LAMP EL HEADLAMP
HEATER HA HEATER SYSTEM
HEATUP EC HEAT UP SWITCH
HLC EL HEADLAMP CLEANER
HORN EL HORN
HSEAT EL HEATED SEAT
ILL EL ILLUMINATION
INJPMP ECELECTRONIC CONTROL FUEL
INJECTION PUMP
INT/L EL INTERIOR AND MAP LAMPS
INT/V ECINTAKE AIR CONTROL VALVE
CONTROL SOLENOID VALVE
LPSV ATLINE PRESSURE SOLENOID
VA LV E
MAFS EC MASS AIR FLOW SENSOR
MAIN ATMAIN POWER SUPPLY AND
GROUND CIRCUIT
MAIN ECMAIN POWER SUPPLY AND
GROUND CIRCUIT
METER ELSPEEDOMETER, TACHOMETER,
TEMP. AND FUEL GAUGES
MIL/DL ECMIL AND DATA LINK CONNEC-
TORS
MIRROR EL DOOR MIRROR
MULTI ELREMOTE KEYLESS ENTRY SYS-
TEM
NATS EL NISSAN ANTI-THEFT SYSTEM
NLS EC NEEDLE LIFT SENSOR
NONDTC AT NON-DETECTABLE ITEMS
OILPSW EC OIL PRESSURE SWITCH
OVRCSV ATOVER RUN CLUTCH SOLENOID
VA LV E
PNP/SW ATPARK/NEUTRAL POSITION
SWITCH
PNP/SW EC NEUTRAL POSITION SWITCH
R/FOG EL REAR FOG LAMP
REMOTE ELAUDIO (REMOTE CONTROL
SWITCH)
S/LOCK ELPOWER DOOR LOCK-SUPER
LOCK
S/SIG EC START SIGNAL
WIRING DIAGRAM CODES (CELL CODES)
EL-291

Code Section Wiring Diagram Name
SROOF EL SUNROOF
SRS RSSUPPLEMENTAL RESTRAINT SYS-
TEM
SSV/A AT SHIFT SOLENOID VALVE A
SSV/B AT SHIFT SOLENOID VALVE B
START SC STARTING SYSTEM
STOP/L EL STOP LAMP
SWL/V ECSWIRL CONTROL VALVE CON-
TROL SOLENOID VALVE
TAIL/L ELPARKING, LICENSE, TAIL AND
STOP LAMPS
TCV ATTORQUE CONVERTER CLUTCH
SOLENOID VALVE
THEFT ELVEHICLE SECURITY (THEFT
WARNING) SYSTEM
THLCNT ECTHROTTLE CONTROL SOLENOID
VA LV ECode Section Wiring Diagram Name
TURN ELTURN SIGNAL AND HAZARD
WARNING LAMP
TVC&SO EC TVC AND SHUT OFF
VNT ECVARIABLE NOZZLE TURBO-
CHARGER CONTROL SOLENOID
VA LV E
VSS EC VEHICLE SPEED SENSOR
VSSA/T ATVEHICLE SPEED SENSOR A/T
(REVOLUTION SENSOR)
VSSMTR AT VEHICLE SPEED SENSOR MTR
WARN EL WARNING LAMPS
WINDOW EL POWER WINDOW
WIP/R EL REAR WIPER AND WASHER
WIPER EL FRONT WIPER AND WASHER
WIRING DIAGRAM CODES (CELL CODES)
EL-292