Isuzu Trooper (1998-2002 year). Service manual - part 945

8D–314

WIRING SYSTEM

5  Windshield Wiper Does Not Operate At “HI” Position

•

•

DISCONNECT THE CONNECTOR OF THE WINDSHIELD WIPER &
WASHER SWITCH
WITH THE SWITCH SET AT “HI” POSITION, IS THERE
CONTINUITY BETWEEN THE SWITCH CONNECTOR TERMINALS
3   B-52   AND  4   B-52   ?

YES

NO

•

•

•

DISCONNECT THE CONNECTOR OF THE WINDSHIELD WIPER
MOTOR
CONNECT THE MOTOR CONNECTOR 1   C-38    TO THE BATTERY
(+) TERMINAL, AND 3   C-38   TO THE BATTERY (–) TERMINAL
DOES THE MOTOR ROTATE AT A HIGH SPEED?

REPAIR OR REPLACE THE WINDSHIELD WIPER &
WASHER SWITCH

YES

NO

REPAIR A POOR CONNECTION AT THE CONNECTORS OR AN
OPEN CIRCUIT BETWEEN 4   B-52   AND 1  C-38

REPAIR OR REPLACE THE WINDSHIELD WIPER
MOTOR

WIRING SYSTEM

8D–315

6  Auto-Stop Function of The Windshield Wiper Motor Does Not Operate

•

•

DISCONNECT THE CONNECTOR OF THE WINDSHIELD WIPER &
WASHER SWITCH
WITH THE SWITCH SET AT “OFF” POSITION, IS THERE
CONTINUITY BETWEEN THE SWITCH CONNECTOR TERMI-
NALS 5   B-52   AND 6  B-52   ?

YES

NO

•

•

•

DISCONNECT THE CONNECTOR OF THE WINDSHIELD WIPER
MOTOR 
CONNECT THE MOTOR CONNECTOR 2   C-38   TO THE BATTERY
(+) TERMINAL AND 3   C-38   TO THE (–) TERMINAL, AND THEN
CHANGE THE CONNECTION OF THE BATTERY (+) TERMINAL
TO THE CONNECTOR 6   C-38   WHILE THE MOTOR ROTATING
AT A LOW SPEED
WHEN CONNECTING THE CONNECTOR TERMINALS 2  C-38   AND
5    C-38   IN THIS CONDITION, DOES THE MOTOR STOP AT AUTO-
STOP POSITION?

REPAIR OR REPLACE THE WINDSHIELD WIPER &
WASHER SWITCH

REPLACE THE ALARM & RELAY CONTROL UNIT

REPAIR A POOR CONNECTION AT THE CONNECTORS
OR AN OPEN CIRCUIT BETWEEN 5   C-38   AND
12  B-7

YES

NO

YES

NO

•

•

TURN THE STARTER SWITCH ON
IS THERE ANY BATTERY VOLTAGE APPLIED BETWEEN THE 
WINDSHIELD WIPER MOTOR HARNESS SIDE CONNECTOR 
TERMINAL 6   C-38  AND GROUND?

REPAIR OR REPLACE THE WINDSHIELD WIPER MOTOR

YES

NO

•

•

DISCONNECT THE CONNECTOR OF THE ALARM & RELAY
CONTROL UNIT
IS THERE CONTINUITY BETWEEN THE HARNESS SIDE
CONNECTOR 12  B-7   AND THE WINDSHIELD WIPER MOTOR
HARNESS SIDE CONNECTOR 5   C-38   ?

REPAIR A POOR CONNECTION AT THE CONNECTORS
OR AN OPEN CIRCUIT BETWEEN THE FUSE C-5 (15A)
AND 6   C-38

8D–316

WIRING SYSTEM

7  Rotation of The Windshield Wiper Motor Does Not Stop

•

IS THE CONTINUITY IN THE WINDSHIELD WIPER & WASHER
SWITCH NORMAL?

YES

NO

REPAIR OR REPLACE THE WINDSHIELD WIPER &
WASHER SWITCH

REPAIR OR REPLACE THE WINDSHIELD WIPER
MOTOR

WIRING SYSTEM

8D–317

8  Windshield Washer Motor Does Not Operate

•

IS FUSE C-5 (15A) NORMAL?

YES

•

•

DISCONNECT THE CONNECTOR OF THE WINDSHIELD WIPER &
WASHER SWITCH
WITH THE WASHER BUTTON DEPRESSED, IS THERE
CONTINUITY BETWEEN THE SWITCH SIDE CONNECTOR
TERMINALS 1  B-52   AND 7  B-52  ? 

REPLACE FUSE C-5 (15A)

NO

YES

NO

•

•

TURN THE STARTER SWITCH ON
IS THE BATTERY VOLTAGE APPLIED BETWEEN THE WIND-
SHIELD WIPER & WASHER SWITCH HARNESS SIDE CONNECTOR
TERMINAL 1  B-52   AND THE GROUND?

REPAIR OR REPLACE THE WINDSHIELD WIPER &
WASHER SWITCH

REPAIR A POOR CONNECTION AT THE CONNECTORS
OR AN OPEN CIRCUIT BETWEEN FUSE C-5 (15A) AND
1  B-52

YES

NO

DISCONNECT THE CONNECTOR OF THE WINDSHIELD WIPER
WASHER MOTOR
TURN THE STARTER SWITCH ON
WITH THE WASHER BUTTON OF THE WINDSHIELD WIPER &
WASHER SWITCH DEPRESSED, IS THE BATTERY VOLTAGE
APPLIED BETWEEN THE WASHER MOTOR HARNESS SIDE
CONNECTOR TERMINAL 1    C-35    AND THE GROUND?

•

•

•

REPAIR A POOR CONNECTION AT THE CONNECTORS
OR AN OPEN CIRCUIT BETWEEN 7  B-52   AND
1   C-35

YES

NO

IS 4   I-39   GROUNDED SECURELY?

•

GROUND IT SECURELY

YES

NO

CONNECT THE MOTOR SIDE CONNECTOR 1   C-35   OF THE WIND-
SHIELD WASHER MOTOR TO THE BATTERY (+) TERMINAL, AND
THE CONNECTOR 2   C-35   TO THE (–) TERMINAL
DOES THE MOTOR ROTATE?

•

•

REPLACE THE WINDSHIELD WASHER MOTOR

YES

NO

REPAIR A POOR CONNECTION AT THE CONNECTORS OR
AN OPEN CIRCUIT BETWEEN 2   C-35   AND THE GROUND