ECU ISUZU TROOPER 1995 Repair Manual

CHASSIS ELECTRICAL 8-211
1-1. WINDSHIELD WIPER DOES NOT OPERATE AT ANY SWITCH
POSITION
• IS FUSE C-5 (15A) NORMAL? I
J
YES I NO I
I
• DISCONNECT THE CONNECTOR OF THE WINDSHIELD WIPER & REPLACE THE FUSE I WASHER SWITCH
• TURN THE STARTER SWITCH ON
• IS THERE A BATTERY VOLTAGE APPLIED BETWEEN THE SWITCH
HARNESS SIDE CONNECTOR 1 I B-521 AND THE GROUND?
I
YES I NO I
I
• IS CONTINUITY IN THE WINDSHIELD WIPER & WASHER
I
REPAIR A POOR CONNECTION OF THE SWITCH NORMAL? CONNECTORS OR AN OPEN CIRCUIT BETWEEN THE FUSE C-5 (15A) AND 1 ~
I
YES I NO I
I
• IS 3 IC-391 GROUNDED SECURELY? I REPAIR OR REPLACE THE SWITCH I
I
YES
I NO I
I
• DISCONNECT THE CONNECTOR OF THE WINDSHIELD WIPER MOTOR GROUND IT SECURELY I • WITH THE MOTOR CONNECTOR 2 IC-3BI CONNECTED TO
THE BATTERY(+) TERMINAL, AND THE CONNECTOR 3 IC-381 TO THE(-) TERMINAL, DOES THE MOTOR ROTATE AT A LOW
SPEED?
• AND WITH THE CONNECTOR 1 IC-3BI CONNECTED TO THE(+) TERMINAL, DOES THE MOTOR ROTATE AT A HIGH SPEED?
I
YES I NO I
I
REPAIR
A POOR CONNECTION OF THE CONNECTORS OR AN OPEN J REPAIR OR REPLACE THE WINDSHIELD WIPER MOTOR
CIRCUIT
BETWEEN 3 ~ AND 3 ~

8-212 CHASSIS ELECTRICAL
1-2. WINDSHIELD WIPER DOES NOT OPERATE AT uiNT" POSITIOr~
~
• DISCONNECT THE CONNECTORS OF THE WINDSHIELD WIPER & WASHER SWITCH
• SET THE SWITCH AT THE uiNTu POSITION
• IS THERE CONTINUITY BETWEEN THE SWITCH CONNECTOR ,, TERMINALS 1 IB-521 -2 ~ ; .. .!..·
L
YES I NO I
I
• IS IB-191 GROUNDED SECURELY I REPAIR OR REPLACE THE WINDSHIELD WIPER 8
I WASHER SWITCH
I
YES
j NO I
I
• IS THERE CONTINUITY BETWEEN THE WINDSHIELD WIPER & GROUND IT SECURELy I WASHER SWITCH HARNESS SIDE CONNECTOR TERMINALS THE
14
~ -IB-191 7
I
YES I NO I
I
• DISCONNECT THE CONNECTOR OF THE WINDSHIELD WIPER REPAIR A POOR CONNECTION OF THE CONNEC TORS ~ INTERMITTENT
RELAY OR AN OPEN CIRCUIT BETWEEN 14~ AND ~ • SET THE SWITCH AT THE uiNTu POSITION AND TURN THE
STARTER SWITCH ON
• IS THE BATTERY VOLTAGE APPLIED BETWEEN 4IX-13I AND THE GROUND?
I
YES
I NO I
I
• IS THERE CONTINUITY BETWEEN 5 IX-131 AND BIB-521 7 I REPAIR A POOR CONNECTION OF THE CONNEC ORS
OR AN OPEN CIRCUIT BETWEEN 4[&jj AND 2 ~
I
YES I NO I
I
REPLACE
THE WINDSHIELD INTERMITTENT RELAY I REPAIR A POOR CONNECTION OF THE CONNE.C ORS
OR AN OPEN CIRCUIT BETWEEN SIX-131 AND aiB-521
~
•

CHASSIS ELECTRICAL 8-217
1-8. WINDSHIELD WASHER MOTOR DOES NOT OPERATE
• IS FUSE C-5 115AI NORMAL? I
I
YES I NO I
I
• DISCONNECT THE CONNECTOR OF THE WINDSHIELD WIPER & REPLACE FUSE C-5 (15AI I WASHER SWITCH
• WITH THE WASHER BUTTON DEPRESSED, IS THERE
CONTINUITY BETWEEN THE SWITCH SIDE CONNECTOR
TERMINALS 1 ~ AND 7 ~?
_l L
YES I NO I
• TURN THE STARTER SWITCH ON REPAIR OR REPLACE THE WINDSHIELD WIPER &
I • IS THERE A BATTERY VOLTAGE APPLIED BETWEEN THE WIND-WASHER SWITCH SHIELD WIPER & WASHER SWITCH HARNESS SIDE CONNECTOR TERMINAL 1IB-52I AND THE GROUND?
I
YES I NO I
I
• DISCONNECT THE CONNECTOR OF THE WINDSHIELD WIPER REPAIR A POOR CONNECTION OF THE CONNECTORS
WASHER MOTOR OR A OPEN CIRCUIT BETWEEN FUSE C-5 (15AI AND
• TURN THE STARTER SWITCH ON 1~
• WITH THE WASHER BUTTON OF THE WINDSHIELD WIPER &
WASHER SWITCH DEPRESSED, IS THERE A BATTERY VOLTAGE APPLIED BETWEEN THE WASHER MOTOR HARNESS SIDE CONNECTOR TERMINAL 1 ~ AND THE GROUND?
I
YES I NO I
I
• IS 1 ~ GROUNDED SECURELY? I REPAIR A POOR CONNECTION OF THE CONNECTORS
OR AN OPEN CIRCUIT BETWEEN 1 I C-351 AND 71 B-521
I
YES I NO I
I
• CONNECT THE MOTOR SIDE CONNECTOR 1 ~ OF THE WIND-GROUND IT SECURELy I SHIELD WASHER MOTOR TO THE BATTERY (+I TERMINAL, AND THE CONNECTOR 2 I C-351 TO THE H TERMINAL
• DOES THE MOTOR ROTATE?
I
YES I NO I
I
REPAIR A POOR CONNECTION OF THE CONNECTORS OR AN I REPAIR OR REPLACE THE WINDSHIELD WASHER
J OPEN CIRCUIT BETWEEN 2 !C-35j AND 1 jC-391 MOTOR

8-218 CHASSIS ELECTRICAL
2-1. REAR WIPER MOTOR DOES NOT OPERATE
• IS FUSE C-6 (10A) NORMAL? I
I
I I
YES
I NO I
I I
• DISCONNECT THE CONNECTOR OF THE REAR WIPER & REPLACE FUSE C-6 (10A) I WASHER SWITCH
• IS CONTINUITY IN THE REAR WIPER & WASHER SWITCH NORMAL
I
I
l
YES j NO l
I I
• TURN THE STARTER SWITCH ON
REPAIR OR REPLACE THE REAR WIPER & WASHER I
• IS THERE A BATIERY VOLTAGE APPLIED BETWEEN THE REAR SWITCH
WIPER & WASHER SWITCH HARNESS SIDE CONNECTOR
TERMINAL 7 ~ AND GROUND?
I
I I
YES I NO I
I I
• DISCONNECT THE CONNECTOR OF THE REAR WIPER MOTOR REPAIR A POOR CONNECTION OF THE CONNECTORS
• WITH THE MOTOR SIDE CONNECTOR 21 G-61 CONNECTED TO OR AN OPEN CIRCUIT BETWEEN FUSE C-6 (10A) THE BATIERY (+)TERMINAL AND THE CONNECTOR 4 I G-6 I TO AND 7 [[i§J
THE(-) TERMINAL, DOES THE MOTOR ROTATE?
I
I I
YES
I NO I
I I
• IS [8]] GROUNDED SECURELY? I REPAIR OR REPLACE THE REAR WIPER MOTOR I
I
I I
YES I NO I
I I
• DISCONNECT THE CONNECTOR OF THE REAR WIPER MOTOR GROUND IT SECURELY J • TURN THE STARTER SWITCH ON
• WITH THE REAR WIPER & WASHER SWITCH AT WIPER
POSITION, IS THE BATIERY VOLTAGE APPLIED BETWEEN
21 G-6 I AND THE GROUND?
I
I I
YES
/ NO I
I I
• DISCONNECT THE [Kij CONNECTOR REPAIR A POOR
CONNECTION OF THE CONNECTORS
• IS THE BATIERY VOLTAGE APPLIED BETWEEN(]]] AND OR AN OPEN CIRCUIT BETWEEN alii'§] AND 41 B-211.
THE GROUND? 2IB-21IAND2IG-61
I
I
I
YES I NO I
I l
REPLACE THE REAR INTERMITIENT RELAY I REPAIR A POOR CONNECTION OF THE CONNECTORS OR AN OPEN CIRCUIT BETWEEN 41 G-61 AND 4 (]U]
•

8 -222 CHASSIS ELECTRICAL
2-6. REAR WASHER MOTOR DOES NOT OPERATE
• IS FUSE C-6 (10A) NORMAL? l
I
YES I NO I
I
• DISCONNECT THE CONNECTOR OF THE REAR WIPER & WASHER SWITCH REPLACE THE FUSE I
• WITH THE SWITCH SET AT WIPER & WASHER POSITION, IS THERE CONTINUITY BETWEEN THE SWITCH CONNECTOR TERMINALS 7 [i;ill -6[Iill 7
I
YES I NO I
I
• TURN THE STARTER SWITCH ON REPAIR OR REPLACE THE REAR WIPER & WASHER SW l
• IS THERE A BATTERY VOLTAGE APPLIED BETWEEN THE REAR
WIPER & WASHER SWITCH HARNESS SIDE CONNECTOR 7 [i;ill AND GROUND?
I
YES I NO I
I
• DISCONNECT THE CONNECTOR OF THE REAR WASHER MOTOR REPAIR A POOR CONNECTION OF THE CONNECTORS
• TURN THE STARTER SWITCH ON OR AN OPEN CIRCUIT BETWEEN THE FUSE C-6 (10A)
• WITH THE REAR WIPER & WASHER SWITCH SET AT WIPER &
AND 7 [i;ill WASHER POSITION, IS THERE A BATTERY VOLTAGE APPLIED BETWEEN THE REAR WASHER MOTOR HARNESS SIDE
CONNECTOR 1 I G-21 AND GROUND?
I
YES I NO I
I
• CONNECT THE MOTOR SIDE CONNECTOR TERMINAL 1 ~ TO REPAIR A POOR CONNECTION OF THE CONNECTORS
THE BATTERY(+) TERMINAL AND 2 ~ TO THE(-) TERMINAL OR AN OPEN CIRCUIT BETWEEN 1 ~ AND 6 ~
• DOES THE MOTOR ROTATE?
I
YES I NO I
I
• IS~ GROUNDED SECURELY? I REPAIR OR REPLACE THE REAR WASHER MOTOR I
I
YES I NO I
I
REPAIR A POOR CONNECTION OF THE CONNECTORS OR AN
I
GROUND IT SECURELy I
OPEN CIRCUIT BETWEEN 2 I G~2 I AND c::B;TI
•

~ INSPECTION
I 4131 2 1 i~~j
l~ 101918 71615 jJ [ill]
~
s 6 7 8 2 3 s position
CD
OFF
~ ON o-~
...... ~ ~ ...... OFF
CD ~ ON o-~
Fig. 8-263
Check
the continuity between the connector
terminals of the switch. (Fig. 8-263)
Repair
or replace the switch when the result of
inspection is found abnormal.
E) REMOVAL (FIG. 8-264)
Preparation: Disconnect the battery ground cable.
This illustration is based on rear defogger SW removal.
Fig. 8-264
'-"' 1. Front console assembly
2. lower cluster assembly
3. Instrument panel driver lower cover
4. Instrument panel cluster assembly
CHASSIS ELECTRICAL 8-227
o Refer to FOG LIGHT SWITCH removal steps in
this section.
5. Rear wiper & washer switch
• To remove the switch, pushing the lock from
the back side of the cluster assembly.
B INSTALLATION
To install, follow the removal steps in the reverse
order, noting the
following point.
1. Push the switch with your fingers until it locks
securely.
REAR WIPER MOTOR
~ INSPECTION
Fig. 8-265
With the battery
(+)terminal connected to the wiper
motor connector termina12l G-6 land the H terminal
to the connector 41 G-6 I, check to see if the motor
rotates. (Fig. 8-265)
Repair
or replace the motor when the result of
inspection is found abnormal.
E) REMOVAL (FIG. 8-266)
Preparation: Disconnect the battery ground cable.
-,
Fig. 8-266

CHASSIS ELECTRICAL 8-237
1. HEADLIGHT WIPERS AND WASHER DO NOT OPERATE
ON EITHER SIDE
• IS FUSE C-7 (10A) NORMAL? I
I
YES
I NO I
I
• TURN THE STARTER SWITCH ON REPLACE THE FUSE C-7 (10A) I
• IS THERE BATTERY VOLTAGE APPLIED
BETWEEN 111 H-8 I (MALE CONNECTOR OF BODY HARNESS SIDE) AND GROUND?
I
YES I NO I
I
• IS IB-19IGROUNDED SECURELY? I REPAIR A POOR CONNECTION AT THE CONNECTORS OR AN OPEN CIRCUIT BETWEEN FUSE C-7 (10A) AND 111 H-81
I
YES
I NO I
I
• DISCONNECT THE HEADLIGHT WIPER
GROUND IT SECURELY J SWITCH CONNECTOR
• IS THE CONTINUITY IN THE SWITCH
NORMAL?
I
YES I NO
I
REPAIR A POOR CONNECTION AT THE CONNECTORS
REPAIR OR REPLACE THE HEADLIGHT OR AN OPEN CIRCUIT BETWEEN 6(}DAND IB-191 WIPER SW

CHASSIS ELECTRICAL 8-241
5. WASHER MOTOR DOES NOT OPERATE
• DISCONNECT THE HEADLIGHT WASHER MOTOR
CONNECTOR
• TURN THE STARTER SWITCH ON
• IS THERE BATTERY VOLTAGE APPLIED BETWEEN THE WASHER MOTOR HARNESS SIDE
CONNECTOR 1 IC-361 AND THE GROUND?
I
YES I NO I I I
• CONNECT THE MOTOR SIDE CONNECTOR REPAIR A POOR CONNECTION OF THE TERMINAL 1IC-36I TO THE BATTERY !+l CONNECTORS OR AN OPEN CIRCUIT
TERMINAL, AND 2IC-36I TO THE H TERMINAL BETWEEN 1IC-36IAND 11! H-BI
• DOES THE MOTOR ROTATE?
I
YES I NO I
I
• DISCONNET THE HEADLIGHT WIPER TIMER REPAIR OR REPLACE THE WASHER MOTOR I CONNECTOR
• TURN THE STARTER SWITCH ON
• IS THERE BATTERY VOLTAGE APPLIED BETWEEN
THE
TIMER HARNESS SIDE CONNECTOR 1IC-44I AND THE GROUND?
I
YES I NO I
I
• IS THERE BATTERY VOLTAGE APPLIED BETWEEN THE REPAIR A POOR CONNECTION OF THE HARNESS SIDE CONNECTOR 4IC-44I AND THE GROUND? CONNECTORS OR AN OPEN CIRCUIT
BETWEEN 1 lc-441 AND 11 I H-al
I
YES I NO I I I
• IS sl C-391 GROUNDED SECURELY? I REPAIR A POOR CONNECTION OF THE CONNECTORS OR AN OPEN CIRCUIT
BETWEEN 2IC-36I AND 4 IC-441
I
YES I NO J
I
• IS THERE CONTINUITY BETWEEN THE HARNESS GROUND IT SECURELY
SIDE CONNECTORS 2IC-44! AND s!C-39! ,
s!C-23! AND 3!C-44!?
I
YES I NO I
I
REPLACE THE HEADLIGHT WIPER TIMER I REPAIR A POOR CONNECTION OF THE CONNECTORS OR AN OPEN CIRCUIT IN THE CIRCUIT THAT HAS NO CONTINUITY

8-242 CHASSIS ELECTRICAL
STARTER SWITCH
Refer to "START AND CHARGING" of this section.
HEADLIGHT WIPER SWITCH (FIG. 8-
286)
Fig. 8-286
The start and stop
of the wiper motor and the washer
motor can be controlled by operating this switch with
the starter switch on.
The switch returns to its
original position with the
power off when it is released.
(1!] INSPECTION
rfiil Check the continuity between the connector ter­
L:::.I minals while operating the switch. (Fig. 8-287)
Replace the switch when the result of inspection
is
found abnormal.
[ill
[I
roo8___8tillJ1
lsl7lslsi4IJ ill
' )
~· s 4 5 6 7 8 2 1 3
OFF o--o o-f-o
~ ON o-f-0--f-0
Fig. 8-287
B REMOVAL (FIG. 8-288)
Preparation: Disconnect the battery ground cable. ~
This illustration is based on fog light switch removal.
Fig. 8-288
1.
Front console assembly
2. Lower cluster assembly
3. Instrument panel driver lower cover
4. Instrument panel cluster assembly
• Refer to FOG LIGHT SWITCH removal steps in
this section.
5.
Headlight wiper switch
• To remove the switch, pushing the lock from
the back side of the cluster assembly.
B INSTALLATION
To install, follow the removal steps in the reverse
order, noting the
following point:
1. Push the switch in with your fingers until it gets
locked securely.
•

8-250 CHASSIS ELECTRICAL
DIAGNOSIS
1. CIGARETIE LIGHTER DOES NOT HEAT SUFFICIENTLY
• IS FUSE C-12 (20Al NORMAL? I
I
YES I NO I
I
• IS (]'I] SECURELY GROUNDED? I REPLACE THE FUSE I
I
YES I NO I
I
• REMOVE THE CIGARETTE LIGHTER GROUND IT SECURELY J • SET THE STARTER SWITCH TO EITHER uACCu OR uON"
POSITION
• IS THE BATTERY VOLTAGE APPLIED BETWEEN THE BIMETAL AT THE CENTER OF THE CASE AND THE CASE?
I
YES I NO
I
REPLACE THE CIGARETTE LIGHTER ASSEMBLy I REPAIR A POOR CONNECTION AT THE
CONNECTORS OR AN OPEN CIRCUIT BETWEEN
FUSE C-12 (20Al AND 1 ~
2. CIGARETTE LIGHTER DOES NOT SPRING OUT AFTER BEING
HEATED
REPLACE THE CIGARETTE LIGHTER
ASSEMBLY