lock ISUZU TROOPER 1995 Workshop Manual

"T1 !0 (X) I ... (X) N
(
RR
DOOR
LOCK
ACTUATOR
(RHI
DOOR
LOCK
KEY
SW
"-
FRT
DOOR
LOCK
& POWER
WINDOW SW
(RHI
RELAY
& FUSE
BOX (FL-11~
BATTERY
' ,,
( TAILGATE
LOCK
ACTUATOR
(LHI
RR
DOOR
LOCK
ACTUATOR
(LHI
h.=
I //If/:
I
FRT
DOOR
LOCK
& POWER
WINDOW
SW
(LHI
FRT
DOOR
LOCK
ACTUATOR
(LHI
FUSE
BOX
(C-181
(
~ ~ r-0 n ~ 0
2
(") J: )> en
en (i) m r­m ~ :a g r­eo I ...a t

8 -144 CHASSIS ELECTRICAL
CIRCUIT DIAGRAM
FL-1 86/R 80AMAIN SW 5W + o---+=-=-4 P-2 ~
GJ
GJ
/
1 H-14 SW
~~P-1ol~ BODY ENG. FRAME 1.25 LG/W
5W
1 C-18 J 20A DOOR LOCK
4 RELAY; POWER WINDOW 141 ITO PAGE 8-1!58)
...
r---D~D~~~1o~------------~~5~7-----,
§*f-----+------+--.51
RE' AY· I I'V'K RELAY; UP 1__;;=.l...v----J--·m~;:;:::::I--·~RELAY; DOWN I ~ ~ ~ 1.25LG IC H-23f----.----------------t--------~
R~LOCK 8 5 ~--r-_)~~i_~t~~~~l~~o~t~--~----~ID-si~~~1-~25~LG~~~~--H~~--~----+---~---4----~--~--~
~!
-
RELAY; UP RELAY; DOWN
D-30JI D-30/1 D-30j ~ 1 2
0 14 2 H-22 H-23
14 2
H-18 H-19
"' BODY-RHij~
3 1
0.5 L!Y
H-19
"' tQ~------------~
"' H-23
"' "' N "' BODY-LH II B-181---------------_J
22 21 H-32 0 -32
3 5 e 3 3 e H-19 H-19
H-34 H-34 H-28 H-28
" .... IQ ~ -' s "' ~ ::!
~ ~ II! s s g s 2
~ IQ
IQ ~ ~ "' IQ H-38 ~ N -' -' -' -'
s ~
"' ;, N ::! "'
Fo.~ Fo-~ Fo-i'f1 Fo-~ ~~ Fo-~ Fo-~ ~2~ Faf1 f. r.1
M M
FAT DOOR LOCK FAT DOOR LOCK ACTUATOA-LH ACTUA TOR-AH
Fig. 8-183
M
ARDOORLOCK ACTUATOR-RH
M
RADOOALOCK ACTUATOA-LH TAILGATE
ACTUATOR· H
•

8 -146 CHASSIS ELECTRICAL
DIAGNOSIS
QUICK CHART FOR CHECK POINTS ~
~
Fuse FRT Door FRT Door
Door Door Door
lock actuator
lock lock
lock key lock key
Cable IC-18 I& power I& power 20AI window)
window) switch switch FRT-LH FRT-RH RR-LH RR-RH Tailgate
arness
T SW-LH SW-RH FRT-LH FRT-RH
1. All the doors do not
lock and unlock by
door lock SW-LH 0(1) 0131
P121
2. All the doors do not
get locked (or
0(1) 0121 Pl31 unlocked) by FRT door lock SW-RH
3. FRT door-LH does not 0(1) P121 get locked {or unlocked)
4. FRT door-RH does not 0111 P121 get
locked (or unlocked)
5. RR door-LH does not 0(1) P121 get locked (or unlocked)
6. RR door-RH does not 0111 P121 get
locked (or unlocked)
7. Tailgate does
not get 0111 P121 locked (or unlocked)
8. Door lock does not
operate when operated 0111 0131 p(2) from the door lock key SW-LH
9. Door lock does not ~ operate when operated Om 0131 P121 from the door lock key SW-RH
Note: Figure in parenthesis "( )" indicates the order of inspection.
~
•

•
•
•
•
•
CHASSIS ELECTRICAL 8-147
1. ALL THE DOORS DO NOT LOCK AND UNLOCK BY DOOR LOCK
SW-LH
IS FUSE C-18 (20Al NORMAL? I
I
YES I NO I
I
IS I
B-181 GROUNDED SECURELY? I REPLACE THE FUSE I
I
YES
j NO I
l
DISCONNECT THE DOOR LOCK SW-LH CONNECTOR
GROUND IB-18ISECURELY
IS
BATTERY VOLTAGE APPLIED BETWEEN 10~
AND GROUND?
l
YES I NO I
l
IS THERE ANY CONTINUITY BETWEEN 11 D-5 I I REPAIR A POOR CONNECTION OF CONNECTORS
AND I B-181 OR AN OPEN CIRCUIT BETWEEN FUSE C-18 (20A)
AND 10 I D-51
I
YES I NO I
I
REPAIR
OR REPLACE THE DOOR LOCK SW-LH J REPAIR A POOR CONNECTION OF CONNECTORS
OR AN OPEN CIRCUIT BETWEEN 11 D-5 I AND
I B-181

8-148 CHASSIS ELECTRICAL
2. ALL THE DOORS DO NOT GET LOCKED (OR UNLOCKED) B~
FRT DOOR LOCK SW-RH
• CHECK THE DOOR LOCKING CONDITION BY
DOOR LOCK SW-LH
I
I
YES I
I
• IS CONTINUITY IN THE FAT DOOR LOCK SW-RH
NORMAL?
I
I
YES I
I
• IS(]}] GROUNDED SECURELY?
I
I
YES I
1
REPAIR A POOR CONNECTION OF CONNECTORS OR
AN OPEN CIRCUIT BETWEEN 2 I D-301 AND 31 D-141
OR 1 I D-301 AND 41 D-141
I
I
I NO I
I
I REFER TO ITEM NO. 1 IN THIS DIAGNOSIS I
I
I NO I
I
I REPAIR OR REPLACE THE DOOR LOCK SW-L -1 I
I
I NO I
I
I GROUND[]]]SECURELY I
3. FRT DOOR-LH DOES NOT GET LOCKED (OR UNLOCKED)
4. FRT DOOR-RH DOES NOT GET LOCKED (OR UNLOCKED
5. RR DOOR-LH DOES NOT GET LOCKED (OR UNLOCKED)
6. RR DOOR-RH DOES NOT GET LOCKED (OR UNLOCKED)
7. TAILGATE DOES NOT GET LOCKED (OR UNLOCKED)
I REPLACE THE DOOR LOCK ACTUATOR I
..

CHASSIS ELECTRICAL 8 -149
8. DOOR LOCK DOES NOT OPERATE WHEN
OPERATED FROM THE DOOR LOCK KEY SW-LH
• CHECK THE DOOR LOCKING CONDITION OPERATED
BY DOOR LOCK SW-LH
l
YES I NO l
1
• DISCONNECT THE DOOR LOCK KEY SW-LH CONNECTOR REFER TO ITEM 1 IN THIS DIAGNOSIS l
• IS BATTERY VOLTAGE APPLIED BETWEEN 1 I D-8 lOR
2 [Q]JAND GROUND?
I
YES I NO I
I
• IS CONTINUITY IN THE DOOR LOCK KEY SW-LH NORMAL? REPAIR A POOR CONNECTION OF CONNECTORS
OR AN OPEN CIRCUIT BETWEEN 1~AND
2ID-30I OR 2[@AND 3ID-30I
I
YES I NO l
I
REPAIR A POOR CONNECTION OF CONNECTORS OR AN OPEN REPAIR OR REPLACE THE DOOR LOCK KEY
CIRCUIT BETWEEN 3 [];[]AND IB-18 I SW-LH

8 -150 CHASSIS ELECTRICAL
9. DOOR LOCK DOES NOT OPERATE WHEN OPERATED
FROM THE FRONT DOOR LOCK KEY SW-RH
• CHECK THE DOOR LOCKING CONDITION OPERATED BY DOOR LOCK SW-LH
YES I
• DISCONNECT THE DOOR LOCK KEY SW-RH CONNECTOR
• ISBATTERYVOLTAGEAPPLIEDBETWEEN 1ID-171 OR 21 D-171 AND GROUND?
YES I
• IS CONTINUITY IN THE DOOR LOCK KEY SW-RH NORMAL?
YES I
REPAIR A POOR CONNECTION OF CONNECTORS OR AN OPEN
CIRCUIT BETWEEN 31 D-171 AND(]]]
I
NO I
I
REFER TO ITEM 1 IN THIS DIAGNOSIS l
I
NO I
I
REPAIR A POOR CONNECTION OF CONNECTO S
OR AN OPEN CIRCUIT BETWEEN 11 D-171 ANC
2ID-30I OR 2ID-17I AND 3ID-30I
I
NO I
I
REPAIR OR REPLACE THE DOOR LOCK KEY
SW-RH
•

(b!] INSPECTION OF THE DOOR LOCK
t!l CIRCUIT
~ Check the voltage and the continuity between
the
front door lock (& power window) switch
harness side connector terminals. (Fig. 8-185)
[E)
,, r=1 ,
f.~B
~ slal7lal911o D
Ter­Connec- minal tor No. Wire
Item to Connecting
color Connected to be
checked terminal
No.
1
7
8
D-5
B
LIB
Ground
Power window
relay
LG/B Lock actuator
(Unlock)
Continuity 1-Ground
Voltage 7-Ground
8-9
CHASSIS ELECTRICAL8 -151
Checking conditions Standard
Continuity
Starter SW
"ON" Approx. 12V
Continuity
9 LG
(There is Continuity 1------.,..--+----------t e
Lock actuator 9-8 -som (Lock) resistance)
10 LG/W Fuse C-18
Voltage 10-Ground Approx.12V
1
(20A)
LG/L Door lock
SW-RH
(Unlock) 1-Ground
Door
lqck SW Unlock Continuity
Lock
No continuity
2 LG/R Door lock 2-Ground Door lock
SW-RH
or
door lock key
SW-LH & RH
Lock Continuity
D-30
3
SW-RH (Lock)
Door lock key
Continuity
SW-LH
& RH
(Lock)
L/Y Door lock key
SW-LH & RH
(Unlock) Unlock
No continuity
3-Ground
Door lock Unlock Continuity
key
SW-LH &
RH Lock No continuity
Fig 8-185
FRONT DOOR LOCK (& POWER
WINDOW) SWITCH-LH
The front door lock (&power window) switch sends
out to each door lock actuator the lock/unlock signals
received
from both door lock switch and door lock
key switch.
Fig 8-186

8 -152 CHASSIS ELECTRICAL
~ INSPECTION
I t!ll Remove the connectors of the front door lock
(& power window) switch, and check the
continuity and the voltage between the switch
side connector terminals. (Fig. 8-186)
(Connect the
(+)terminal of the battery to
10 I D-51 and the(-) terminal to 11 D-51)
11 D-51 -91 D-51 ...... Continuity
1 I D-51 -81 D-51 ...... Continuity
(Then, ground 2ID-30I.)
9 [[[] ...... Current flow for approx. 1 second.
(Disconnect the
ground of 2ID-30l , and ground
1 lD-30l )
8
[]]] ...... Current flow for approx. 1 second.
Replace the
controller when the result of
inspection is found abnormal.
~ DOOR LOCK OPERATION TEST
ltUI After confirming tha~ there is continuity
between the harness s1de connector terminals
8l D-51 and 91 D-51 of the front door lock
switch-LH, apply battery voltage
to each of the
terminals to conduct the operation test. (Fig. 8-
187) When the
door lock will not operate, check
the
door lock actuator for any trouble.
~
E~j
~ sT sT7Islg 10 J
Harness side
Connecting
terminal Operation
8 (LG/8) 9(LG)
,+, ,_, Unlock ~
1-1 1+1 Lock
Fig. 8-187
,._,., REMOVAL AND INSTALLATION
j .. .-j Refer to the removal and installation steps of
the POWER WINDOW SWITCH (DRIVER SIDE)
in POWER WINDOW in this section.
DOOR LOCK (& POWER WINQOW)
SWITCH-RH
i
The door lock switch on the front passenger~s door -
sends out the lock/unlock signals to the fro t door
lock (&power window) switch-LH. (Fig. 8-18 )
Fig. 8-188
~ INSPECTION
lt!ll Check to see if there is any continuity b~tween
the connector terminals of the front door 'ock (&
power window) switch-RH. (Fig. 8-189) 1
Replace the switch when the result of ins~ection ....-...
is found abnormal. ' --.-
SW position
Lock
Unlock
Fig. 8-189
0 REMOVAL AND INSTALLATION ' c:J I
r::J Refer to the removal and installation sfps of
t::.l the POWER WINDOW SWITCH (PASS NGER
SIDE) in POWER WINDOW in this sectio .
•

DOOR LOCK KEY SWITCH
~ INSPECTION
l'fiil Check to see if there is any continuity between
~ the connector terminals of the door lock key
switch. (Fig.
8-190)
Replace the switch when the result of inspection
is found abnormal.
~lo-nl
•
~ s 1 2 3
Lock 0 0
Unlock o--o
Fig. 8-190
E) REMOVAL AND INSTALLATION
1••1 Refer to the removal and installation steps of
the DOOR LOCK ASSEMBLY in section 10.
Door lock key switch
connector Key
switch
(W/Anti-theft)
Door
lock
assembly
To actuator
Fig. 8-191
CHASSIS ELECTRICAL 8 -153
DOOR LOCK ACTUATOR (FOR ALL
DOORS INCLUDING TAILGATE)
Receiving the forward or reverse current from the
front door lock (& power window) switch-LH, the
door lock actuator locks or unlocks the door with the
rod connected
to the door lock mechanism. (Fig. 8-
192)
Fig. 8-192
~ INSPECTION OF THE DOOR LOCK
ACTUATOR
Apply the battery voltage to the connector
terminals
of the door lock actuator to check the
operation. (Fig. 8-193)
When the
door lock actuator is checked on the
vehicle and there is no continuity, and when the
door lock actuator itself is checked and no
trouble is found, check the circuit between the
door lock actuator and the front door lock (&
power window) switch-LH for any failure.