1995 ISUZU TROOPER Workshop Manual

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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
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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
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(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