Isuzu Rodeo UE. Manual — part 578

8D–160

WIRING SYSTEM

Parts Location

D08RX074

Legend

(1) Windshield Washer Motor
(2) H–13
(3) C–27
(4) C–36
(5) I–14, 42
(6) Alarm & Relay Control Unit
(7) FRT Windshield Wiper, Washer Switch
(8) Stater Switch

(9) Combination Switch

(10) C–16

(11) Relay and Fuse Box

(12) H–32
(13) I–31, I–46
(14) B–8
(15) Windshield Motor
(16) Windshield Washer Tank
(17) C–28

8D–161

WIRING SYSTEM

Diagnosis

Windshield Wiper Does Not Operate At Any Switch Position

Step

Action

Value(s)

Yes

No

1

Is the fuse 16 normal?

—

Go to Step 2

Replace the

fuse

2

Is C–36 grounded securely?

—

Go to Step 3

Ground it

securely

3

Disconnect the windshield wiper motor connector
C–27.

Is there continuity between harness side connector
C–27 terminal 3 and the ground?

—

Go to Step 5

Go to Step 4

4

Repair an open circuit between connector C–27
terminal 3 and the ground C–36.

Is the action complete?

—

Go to Step 3

5

1. Disconnect the windshield wiper & washer switch

connector I–31.

2. Turn the starter switch on.

Is the battery voltage applied between harness side
connector I–31 terminal 3 and the ground?

Approx. 12V

Go to Step 7

Go to Step 6

6

Repair an open circuit between the fuse 16 and
connector I–31 terminal 3.

Is the action complete?

—

Go to Step 5

—

7

Is the continity between the windshield wiper and
washer switch terminal normal?

—

Repair or

replace the

windshield

wiper motor

Repair or

replace the

switch

8D–162

WIRING SYSTEM

Windshield Wiper Does Not Operate At “INT” Position

Step

Action

Value(s)

Yes

No

1

1. Disconnect the windshield wiper and washer switch

connector I–31.

2. Turn the windshield wiper and washer switch to INT

position.

Is there continuity between switch side connector I–31
terminal 2 and 3, 5 and 6 and 8 and 13?

—

Go to Step 2

Repair or

replace the

switch

2

Is B–8 grounded securely?

—

Go to Step 3

Ground it

securely

3

1. Reconnect the windshield wiper and washer switch

connector I–31.

2. Disconnect the alarm and relay control unit

connector I–41 and I–42.

3. Turn the starter switch on.

Is the battery voltage applied between harness side
connector I–42 terminal 12 or 9 and the ground?

Approx. 12V

Go to Step 5

Go to Step 4

4

Repair an open circuit between connector I–31
terminal 2 and connector I–42 terminal 12 or connector
I–42 terminal 9.

Is the action complete?

—

Verify repair

—

5

Is the battery voltage applied between harness side
connector I–41 terminal 3 or connector I–41 terminal 25
and the ground?

Approx. 12V

Replace the

alarm and

relay control

unit

Go to Step 6

6

Repair an open circuit between the fuse 16 and
connector I–41 terminal 3 or connector I–41 terminal
25.

Is the action complete?

—

Verify repair

—

Intermittent Interval Does Not Change

Step

Action

Value(s)

Yes

No

1

Disconnect the windshield wiper and washer switch
connector I–31.

Does the resistance value between the switch side
connector I–31 terminal 8 and 13 vary within the range
specified in the value(s) column while the intermittent
knob is being turned?

0

W

– 2K

W

Go to Step 2

Replace the

switch

2

1. Reconnect the windshield wiper and washer switch

connector I–31.

2. Disconnect the alarm and relay control unit

connector I–41 and I–42.

Does the resistance value between harness side
connector I–42 terminal 21 or connector I–42 terminal 5
and the ground vary within the range specified in the
value(s) column while the intermittent knob is being
turned?

0

W

– 2K

W

Replace the

alarm and

relay control

unit

Go to Step 3

3

Repair a short circuit between connector I–31 terminal
8 and connector I–42 terminal 21 or connector I–42
terminal 5.

Is there action complete?

—

Verify repair

—

8D–163

WIRING SYSTEM

Windshield Wiper Does Not Operate At “LO” Position

Step

Action

Value(s)

Yes

No

1

Repair or replace the windshield wiper and washer
switch.

NOTE: There should be continuity between switch
side connector I–31 terminal 3 and 5 with the switch
turned to the LOW position.

Is the action complete?

—

Verify repair

—

Windshield Wiper Does Not Operate At “HI” Position

Step

Action

Value(s)

Yes

No

1

1. Disconnect the windshield wiper and washer switch

connector I–31.

2. Turn the windshield wiper and washer switch to the

HIGH position.

Is there continuity between switch side connector I–31
terminal 3 and 4?

—

Go to Step 2

Repair or

replace the

switch

2

1. Reconnect the windshield wiper and washer switch

connector I–31.

2. Disconnect the windshield wiper motor connector

C–27.

3. Turn the starter switch on.

Is the battery voltage applied between harness side
connector C–27 terminal 1 and the ground?

Approx. 12V

Repair or

replace the

windshield

wiper motor

Go to Step 3

3

Repair an open circuit between connector I–31
terminal 4 and connector C–27 terminal 1.

Is the action complete?

—

Verify repair

—