2002 NISSAN TERRANO Service Repair Manual

DIAGNOSTIC PROCEDURE 1
(Door unlock sensor check)
CHECK DOOR UNLOCK SENSOR
INPUT SIGNAL.
Check voltage between time control unit
connector terminals
U35orU36and
ground.
NG
EOK
Door unlock sensor is OK.
CHECK DOOR UNLOCK SENSOR.
1) Disconnect door unlock sensor con-
nector.
2) Check continuity between door unlock
sensor terminals.
OK
ENG
Replace door lock actuator
assembly.
Check the following:
IDoor unlock sensor ground circuit.
IHarness for open or short-circuit
between control unit and door unlock
sensor
Terminals
Condi-
tionVoltage
[V]
!@
Driver
side
U35GroundLockedApprox.
2
(Approx.
20 sec.)
Unlocked 0
Pas-
senger
side
U36GroundLockedApprox.
12
(Approx.
20 sec.)
Unlocked 0
Terminals Condition Continuity
q
2-q5Locked No
Unlocked Yes
YEL301D
YEL302D
H
H
POWER DOOR LOCK Ð SUPER LOCK Ð
Trouble Diagnoses (Cont'd)
EL-161

DIAGNOSTIC PROCEDURE 2
(Door key cylinder switch check)
CHECK DOOR KEY CYLINDER SWITCH
INPUT SIGNAL (LOCK SIGNAL).
Check voltage 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 cyl-
inder switch terminals.
OK
ENG
Replace key cylinder
switch.
Check the following:
IHarness connectors
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 Voltage [V]
Between neutral and lock 0
Unlock/neutral Approx. 5
Terminals Key position Continuity
q
1-q2
Neutral No
Between neu-
tral and lockYe s
Unlock/neutral No
Full stroke
(Lock)No
YEL303D
YEL304D
H
H
POWER DOOR LOCK Ð SUPER LOCK Ð
Trouble Diagnoses (Cont'd)
EL-162

DIAGNOSTIC PROCEDURE 3
(Door lock actuator check)
CHECK DOOR LOCK ACTUATOR CIR-
CUIT.
Check voltage for door lock actuator.
Before operating passenger side knob
lock switch, close all doors.
OK
ENG
Door lock actuator is OK.
CHECK DOOR LOCK ACTUATOR.
1. Disconnect door lock actuator connec-
tor.
2. Apply 12V direct current to door lock
actuator and check operation.
Front door
Rear door
NG
EOK
Check harness between
control unit and door lock
actuator.
Replace door lock actuator assembly.
Knob lock
switch
conditionTerminals
Voltage
(V)
!@
Unlock,
Lock
U41GroundApprox.
12
(Approx.
5 sec-
onds) Lock,
Unlock
U44Ground
Door lock actuator
operationTerminals
!@
Unlocked,
Lockedq
6q3
Locked,
Unlockedq3: (LHD)
q
4: (RHD)q
6: (LHD)
q
1: (RHD)
Door lock actuator
operationTerminals
!@
Unlocked,
Lockedq
6: (LH)
q
1: (RH)q
3: (LH)
q
4: (RH)
Locked,
Unlockedq
3: (LH)
q
4: (RH)q
6: (LH)
q
1: (RH)
YEL305D
YEL306D
YEL307D
H
H
POWER DOOR LOCK Ð SUPER LOCK Ð
Trouble Diagnoses (Cont'd)
EL-163

DIAGNOSTIC PROCEDURE 4
(Super lock actuator check)
CHECK SUPER LOCK ACTUATOR CIRCUIT.
Check voltage for super lock actuator.
Note:
Put the system in set condition before check-
ing release signal.
OK
ENG
Super lock actuator is
OK.
CHECK SUPER LOCK ACTUATOR.
1. Disconnect door lock actuator assembly
connector.
2. Set lever A in lock position.
3. Apply 12V direct current to door lock actua-
tor assembly and check operation.
Front door
Rear door
NG
EOK
Check harness
between control unit
and door lock actuator
assembly.
Replace door lock actuator assembly.
Door key
cylinder
switch con-
ditionTerminals
Voltage
(V)
!@
Lock (Set)
U40Ground
Approx. 12
Unlock
(Released)
U44Ground
Super lock
actuator
operationTerminalsConnec-
tion from
lever A to
lever B !@
Released
,Setq
1q4Discon-
nect
Set,
Releasedq
4q1Connect
Super lock
actuator
operationTerminalsConnec-
tion from
lever A to
lever B !@
Released
,Setq
1: (LH)
q
6: (RH)q
4: (LH)
q
3: (RH)Discon-
nect
Set,
Releasedq
4: (LH)
q
3: (RH)q
1: (LH)
q
6: (RH)Connect
YEL308D
YEL309D
YEL310D
YEL311D
H
H
POWER DOOR LOCK Ð SUPER LOCK Ð
Trouble Diagnoses (Cont'd)
EL-164

DIAGNOSTIC PROCEDURE 5
(Door switch check)
CHECK DOOR SWITCH INPUT SIGNAL.
Check voltage 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
IHarness for open or short between con-
trol unit and door switch
Termi-
nalsCondition Voltage [V]
Driver
side door
B07Opened 0
Closed Approx. 12
Other
door
B01Opened 0
Closed Approx. 12
Terminals Condition Continuity
Other
door
switchesq
1-
groundClosed No
Open Yes
YEL312D
YEL313D
H
H
POWER DOOR LOCK Ð SUPER LOCK Ð
Trouble Diagnoses (Cont'd)
EL-165

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
H
H
H
POWER DOOR LOCK Ð SUPER LOCK Ð
Trouble Diagnoses (Cont'd)
EL-166

DIAGNOSTIC PROCEDURE 7
(Ignition switch check)
CHECK IGNITION SWITCH INPUT SIG-
NAL.
Check voltage between control unit termi-
nal
U22and ground.
NG
EOK
Ignition switch is OK.
CHECK IGNITION SWITCH POWER
SUPPLY.
Check voltage between ignition switch
harness terminalq
2and ground.
Battery voltage should exist.
OK
ENG
Check the following.
I10A fuse [No.
16,
located in fuse block
(J/B)]
IHarness for open or
short between ignition
switch and fuse
CHECK IGNITION SWITCH.
1) Disconnect ignition switch connector.
2) Check continuity between ignition
switch terminals.
OK
ENG
Replace ignition switch.
Check harness for open or short between
control unit and ignition switch.
Condition of key switch Voltage [V]
Key is inserted Approx. 12
Key withdrawn 0
Terminals Condition Continuity
q
1-q2
Key is
inserted.Ye s
Key is with-
drawn.No
DIAGNOSTIC PROCEDURE 8
(Ignition switch ªONº circuit check)
Terminals Ignition switch position
!@OFF ACC ON
U01Ground 0V 0V Battery voltage
If NG, check the following.
I10A fuse [No.
26, located in the fuse block (J/B)]
IHarness for open or short
YEL316D
YEL317D
YEL318D
YEL319D
H
H
H
POWER DOOR LOCK Ð SUPER LOCK Ð
Trouble Diagnoses (Cont'd)
EL-167

Schematic
YEL159D
MULTI-REMOTE CONTROL SYSTEM
EL-168