1998 NISSAN PATROL Door actuator

System Description
Power is supplied at all times
+through 40A fusible link (Letter
e, located in the fuse and fusible link box)
+to circuit breaker terminalj
1
+through circuit breaker terminalj2
+to smart entrance control unit terminalj11.
Ground is supplied to smart entrance control unit terminalj
18through body grounds.
INPUT
When the door lock & unlock switch (power window main switch) is in LOCKED position, ground signal is
supplied
+to smart entrance control unit terminalj
4
+through door lock & unlock switch terminalj14.
When the door lock & unlock switch (power window main switch) is in UNLOCKED position, ground signal is
supplied
+to smart entrance control unit terminalj
5
+through door lock & unlock switch terminalj7.
Driver side door key cylinder and driver side lock knob are connected to driver side door lock switch with a
rod. When driver side door lock switch is in UNLOCKED position, ground signal is supplied
+to smart entrance control unit terminalj
2
+through driver side door lock switch terminalj1(without multi-remote control system) or
+through driver side door lock actuator terminalj
2(with multi-remote control system).
When driver side door lock switch is in LOCKED position, ground signal is interrupted.
Door lock operates according to the conditions of the door lock & unlock switch (power window main switch)
and driver side door lock switch.
OUTPUT
Unlock
Ground is supplied
+to passenger side door lock actuator, rear door lock actuator LH and RH terminalj
3
+through smart entrance control unit terminalj15.
Power is supplied
+to passenger side door lock actuator, rear door lock actuator LH and RH terminalj
1
+through smart entrance control unit terminalj16.
Then, the doors are unlocked.
Lock
Ground is supplied
+to passenger side door lock actuator, rear door lock actuator LH and RH terminalj
1
+through smart entrance control unit terminalj16.
Power is supplied
+to passenger side door lock actuator, rear door lock actuator LH and RH terminalj
3
+through smart entrance control unit terminalj15.
Then, the doors are locked.
POWER DOOR LOCK
EL-204

Trouble Diagnosis
SYMPTOM CHART
REFERENCE PAGE EL-207 EL-208 EL-209 EL-210
SYMPTOM
MAIN POWER SUPPLY AND GROUND CIRCUIT CHECK
DIAGNOSTIC PROCEDURE 1
(Door lock/unlock switch check)
DIAGNOSTIC PROCEDURE 2
(Door lock actuator check)
DIAGNOSTIC PROCEDURE 3
(Driver side door lock switch check)
None of the doors lock/unlock when operat-
ing any switch.XX
One or more doors are not locked and/or
unlocked.X
Door lock/unlock switch does not operate. X
Door knob lock switch/key cylinder on driv-
er's door does not operate.X
Driver side door does not lock/unlock when
operating remote controller. (With multi-re-
mote control system)X
POWER SUPPLY AND GROUND CIRCUIT CHECK
Power supply circuit check
Terminal Ignition switch
Å@OFF ACC ON
j
11GroundBattery
voltageBattery
voltageBattery
voltage
Ground circuit check
Terminals Continuity
j
18- Ground Yes
SEL860UB
SEL854UD
POWER DOOR LOCK
EL-207

DIAGNOSTIC PROCEDURE 2
(Door lock actuator check)
CHECK DOOR LOCK ACTUATOR CIR-
CUIT.
Check voltage for door lock actuator.
OK
cNG
Replace control unit.
(Before replacing control
unit, perform DIAGNOSTIC
PROCEDURE 1.)
CHECK DOOR LOCK ACTUATOR.
1. Disconnect door lock actuator connec-
tor.
2. Apply 12V direct current to door lock
actuator and check operation.
OK
cNG
Replace door lock actuator.
Repair harness between control unit con-
nector and door lock actuator.
Door lock/unlock
switch conditionTerminals
Voltage
(V)
Å@
Lockj
15ground
Battery
voltage
Unlockj
16ground
Door lock actuator operationTerminalsÅ@
Unlocked®Lockedj
3j1
Locked®Unlockedj1j3
SEL863UB
SEL434V
.
.
POWER DOOR LOCK
Trouble Diagnosis (Cont'd)
EL-209

DIAGNOSTIC PROCEDURE 3
(Driver side door lock switch check)
CHECK DOOR LOCK SWITCH INPUT
SIGNAL.
Check voltage between control unit termi-
nalj
2and ground.
NG
cOK
Driver side door lock
switch is OK.
CHECK DOOR LOCK SWITCH.
1. Disconnect driver side door lock switch
or door lock actuator connector.
2. Check continuity between door lock
switch terminals.
Without multi-remote control system
With multi-remote control system
OK
cNG
Replace door lock switch.
Check the following.
+Ground circuit for door lock switch
+Harness for open or short between door
lock switch and control unit
Driver side door lock
switch conditionVoltage
(V)
Lock Approx. 12
Unlock 0
Terminals Condition Continuity
j
1-j2Locked No
Unlocked Yes
Terminals Condition Continuity
j
2-j4Locked No
Unlocked Yes
SEL861UB
SEL435V
SEL436V
.
.
POWER DOOR LOCK
Trouble Diagnosis (Cont'd)
EL-210

Before starting trouble diagnoses below, perform preliminary check, EL-223.
Symptom numbers in the symptom chart correspond with those of Preliminary check.
SYMPTOM CHART
REFERENCE PAGE EL-225 EL-226 EL-227 EL-228 EL-229 EL-230 EL-231 EL-232 EL-232 EL-233
SYMPTOM
Power supply and ground circuit check
Procedure 1
(Door unlock sensor check)
Procedure 2
(Door key cylinder switch check)
Procedure 3
(Door lock actuator check)
Procedure 4
(Super lock actuator check)
Procedure 5
(Door switch check)
Procedure 6
(NATS release signal check)
Procedure 7
(Key switch check)
Procedure 8
(Ignition switch ``ON'' circuit check)
Procedure 9
(Remote controller signal check)
1Power door lock does not operate
using any switch.XX X
2Power door lock does not operate
with any switch of driver side.X
3Power door lock does not operate
with any switch of passenger side.XX
4Speci®c door lock actuator does not
operate.X
5Super lock cannot be set by both
door key cylinders.XXX XX
6Super lock cannot be set by one of
door key cylinders.X
7*Super lock cannot be released by
one or both door key cylinders.X
8*Super lock cannot be released by
ignition key switch. (Signal from
NATS IMMU)X
9Speci®c super lock actuator does not
operate.X
10*Key reminder system does not
operate.XX
11Super lock cannot be set/released
by using multi-remote controller.X
X: Applicable
*: Make sure the power door lock system operates properly.
POWER DOOR LOCK Ð Super Lock Ð
Trouble Diagnoses (Cont'd)
EL-224

DIAGNOSTIC PROCEDURE 1
(Door unlock sensor check)
CHECK DOOR UNLOCK SENSOR
INPUT SIGNAL.
Check voltage between control unit termi-
nalsj
4orj5and ground.
Refer to wiring diagram in EL-215 (LHD),
EL-219 (RHD).
NG
cOK
Door unlock sensor is OK.
CHECK DOOR UNLOCK SENSOR.
1. Disconnect door unlock sensor connec-
tor.
2. Check continuity between door unlock
sensor terminals.
OK
cNG
Replace door lock actuator
assembly.
Check the following.
+Door unlock sensor ground circuit
+Harness for open or short between con-
trol unit and door unlock sensor
Terminals
ConditionVoltage
[V]
Å@
Driver
sidej4GroundLockedApprox.
5
Unlocked 0
Pas-
senger
sidej
5GroundLockedApprox.
5
Unlocked 0
Terminals Condition Continuity
j
2-j5Locked No
Unlocked Yes
SEL813UB
SEL814UB.
.
POWER DOOR LOCK Ð Super Lock Ð
Trouble Diagnoses (Cont'd)
EL-226

DIAGNOSTIC PROCEDURE 3
(Door lock actuator check)
CHECK OUTPUT SIGNAL FOR DOOR
LOCK ACTUATOR.
Check voltage for door lock actuator.
Before operating passenger side knob
lock switch, close all doors.
Refer to wiring diagram in EL-215 (LHD),
EL-219 (RHD).
OK
cNG
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.
Door lock actuator operation
Back door lock actuator operation
NG
cOK
Check harness between
control unit and door lock
actuator.
Replace door lock actuator assembly.
Knob lock switch
conditionTerminals
Voltage
(V)
Å@
Unlock®Lockj15GroundApprox. 12
(Approx. 5
seconds) Lock®Unlockj
14Ground
Door lock actuator operationTerminalsÅ@Unlocked®Lockedj6j3
Locked®Unlockedj3j6
Back door lock actuator operationTerminalsÅ@Unlocked®Lockedj3j1
Locked®Unlockedj1j3
SEL817UB
SEL818UB
SEL827UB
SEL434VA
.
.
POWER DOOR LOCK Ð Super Lock Ð
Trouble Diagnoses (Cont'd)
EL-228

DIAGNOSTIC PROCEDURE 4
[Super lock actuator (in door lock actuator assembly)
check]
CHECK OUTPUT SIGNAL FOR SUPER
LOCK ACTUATOR.
Check voltage for super lock actuator.
Put the system in set condition before
checking release signal.
Refer to wiring diagram in EL-215 (LHD),
EL-219 (RHD).
OK
cNG
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
actuator assembly and check operation.
NG
cOK
Check harness between
control unit and door lock
actuator assembly.
Replace door lock actuator assembly.
Door key cylinder
switch conditionTerminals
Voltage
(V)
Å@Lock (Set)j18Ground
Approx. 12
Unlock
(Released)j
13Ground
Super lock actua-
tor operationTerminals
Connection from
lever B to lever A
Å@Released®Setj1j4Disconnect
Set®Releasedj
4j1Connect
SEL819UB
SEL820UB
.
.
POWER DOOR LOCK Ð Super Lock Ð
Trouble Diagnoses (Cont'd)
EL-229