2004 NISSAN TERRANO Service Repair Manual

Before starting trouble diagnoses below, perform ªPRELIMINARY CHECKº, EL-171.
Symptom numbers in the symptom chart correspond with those of Preliminary check.
SYMPTOM CHART
REFERENCE PAGEEL-173 EL-174 EL-175 EL-176 EL-177 EL-178
SYMPTOM
Power supply and ground circuit check
Procedure 1
(Door unlock sensor check)
Procedure 2
(Door lock/unlock switch check)
Procedure 3
(Door lock actuator check)
Procedure 4
(Door switch check)
Procedure 5
(Ignition key switch check)
1 Power door lock does not oper-
ate using any switch. XX X
2 Power door lock does not oper-
ate using door lock/unlock
switch. X
3 Power door lock does not oper-
ate with any switch of driver side. X
4 Power door lock does not oper-
ate with any switch of passenger
side. XX
5 Specific door lock actuator does
not operate. X
6 *Key reminder system does not
operate. XX
X: Applicable
*: Make sure the power door lock system operates properly.
POWER DOOR LOCK
Trouble Diagnoses (Cont'd)
EL-172
http://vnx.su/

POWER SUPPLY AND GROUND CIRCUIT CHECK
Main power supply circuit check
TerminalsIgnition switch position
!@ LOCK ACC ON
U08GroundBattery
voltage Battery
voltage Battery
voltageU09
Ground circuit check
Terminals Continuity
U16- GroundYes
YEL978E
YEL300D
POWER DOOR LOCK
Trouble Diagnoses (Cont'd)
EL-173
http://vnx.su/

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.
I Harness for open or short-circuit
between control unit and door unlock
sensor
Terminals
Condi-
tion Voltage
(V)
!@
Driver
side
U35Ground Locked Approx.
12
(Approx. 20 sec.)
Unlocked 0
Pas-
senger
side
U36Ground Locked Approx.
12
(Approx. 20 sec.)
Unlocked 0
Terminals Condition Continuity
q
2- q4Locked
No
Unlocked Yes
YEL301D
YEL908E
H
H
POWER DOOR LOCK
Trouble Diagnoses (Cont'd)
EL-174
http://vnx.su/

DIAGNOSTIC PROCEDUE 2
(Door lock/unlock switch check)
Check voltage between power window
main switch terminalsq
7,q14and ground.
NG
EOK
Power window main switch
(door lock/unlock switch) is
OK.
CHECK POWER WINDOW MAIN
SWITCH.
1) Disconnect power window main switch
harness connector.
2) Check continuity between power win- dow main switch terminals q
7,q14and
q
3.
OK
ENG Repair or replace power
window main switch.
Check the following.
IHarness between TCU and power win-
dow main switch.
I Power window main switch ground cir-
cuit
I Door lock switch relay
I Harness between fuse block and door
lock relay, door lock relay and power
window main switch
Terminals
Condi-
tion Voltage
(V)
!@
q
7Ground Locked 5
Unlocked 0
q
14Ground Locked 0
Unlocked 12
Terminals Condi-
tion Continu-
ity
q
7
q3
Locked No
Unlocked Yes
q
14Locked Yes
Unlocked No
YEL909E
YEL910E
H
H
POWER DOOR LOCK
Trouble Diagnoses (Cont'd)
EL-175
http://vnx.su/

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
ENGDoor 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.
OK
ENG Replace door lock actuator
assembly.
Check harness between control unit and
door lock actuator.
Knob lock
switch
condition Terminals
Voltage
(V)
!@
Unlock ,
Lock
U41Ground Approx.
12
(Approx. 5 sec-onds)U42
Lock ,
UnlockU44Ground
Door lock actuator operation Terminals
!@
Unlocked ,
Locked q
1q3
Locked
,
Unlocked q3q1
YEL911E
YEL912E
H
H
POWER DOOR LOCK
Trouble Diagnoses (Cont'd)
EL-176
http://vnx.su/

DIAGNOSTIC PROCEDURE 4
(Door switch check)
CHECK DOOR SWITCH INPUT SIGNAL.
Check voltage between fuse block (J/B)
and ground.
NG
EOKDoor 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
I Harness for open or short between con-
trol unit and door switch
Termi-
nals Condition Voltage (V)
Driver
side door
B07Opened 0 Closed Approx. 12
Other
door
B01Opened 0 Closed Approx. 12
Terminals Condition Continuity
q
1- ground Closed No
Open Yes
YEL312D
YEL913E
H
H
POWER DOOR LOCK
Trouble Diagnoses (Cont'd)
EL-177
http://vnx.su/

DIAGNOSTIC PROCEDURE 5
(Key switch check)
CHECK KEY SWITCH INPUT SIGNAL.
Check voltage between control unit termi-
nal
U22and ground.
NG
EOKKey switch is OK.
CHECK KEY SWITCH POWER SUPPLY.
Check voltage between key switch har-
ness terminal q
2and ground.
Battery voltage should exist.
OK
ENG Check the following.
I10A fuse [No.
16,
located in fuse block
(J/B)]
I Harness for open or
short between key
switch and fuse
CHECK KEY SWITCH.
1) Disconnect key switch connector.
2) Check continuity between ignition switch terminals.
OK
ENG Replace key switch.
Check harness for open or short between
control unit and key switch.
Condition of key switch Voltage (V)
Key is inserted Approx. 12Key withdrawn 0
Terminals Condition Continuity
q
1-q2
Key is
inserted. Ye s
Key is with- drawn. No
YEL316D
YEL979E
YEL914E
H
H
H
POWER DOOR LOCK
Trouble Diagnoses (Cont'd)
EL-178
http://vnx.su/

Component Parts Location
YEL298D
POWER DOOR LOCK Ð SUPER LOCK Ð
EL-179
http://vnx.su/