Isuzu KB P190. Service manual — part 1343

8A-434 ELECTRICAL-BODY AND CHASSIS

INSPECTION AND REPAIR

B8

RTW78ASH002901

Power Window Relay

Check continuity between the relay terminals.

2

-

1

. . . . . . No continuity

(When battery voltage is applied between

3

and

4

)

2

-

1

. . . . . . Continuity

Harness side

D20

D5

Driver’s Side Power Window & Door Lock
Switch

1. Harness Side Connector Circuit

Disconnect the switch connector, and check voltage and

continuity between the harness side connector terminals as

shown in the following table.

Terminal

No.

Wire

color

Connecting to

Check item

Connectin

g terminal

Check condition

Standard

6 G/R

Power window

relay

Voltage

6-Ground

Starter SW “ON”

Approx.

12V

7 BR/R

Power window

8 BR/W

motor

3 B

Ground Continuity

3-Ground

- Continuity

Harness side

D10

Front Passenger’s Power Window Switch

1. Harness Side Connector Circuit

Disconnect the switch connector, and check voltage and

continuity between the harness side connector terminals as

shown in the following table.

Continuity

-

7-8

Continuity

ELECTRICAL-BODY AND CHASSIS 8A-435

Terminal

No.

Wire

color

Connecting to

Check item

Connectin

g terminal

Check condition

Standard

6 G/R

Power window

relay

Voltage

6-Ground

Starter SW “ON”

Approx.

12V

8 BR/R

7 BR/W

Power window

motor

Continuity 8-7

-

Continuity

1,3 B

Ground Continuity

1,3-Ground

-

Continuity

Harness side

D12

D16

Rear Power Window Switch-LH & RH

1. Harness Side Connector Circuit

Disconnect the switch connector, and check voltage and

continuity between the harness side connector terminals as

shown in the following tables.

D12

(RR-LH)

Terminal

No.

Wire

color

Connecting to

Check item

Connectin

g terminal

Check condition

Standard

6 G/R

Power window

relay

Voltage

6-Ground

Starter SW “ON”

Approx.

12V

8 BR/R

7 BR/W

Power window
motor

Continuity 8-7

-

Continuity

3 B

4 B

Ground Continuity

3,4-Ground - Continuity

D16

(RR-RH)

Terminal

No.

Wire

color

Connecting to

Check item

Connectin

g terminal

Check condition

Standard

6 G/R

Power window

relay

Voltage

6-Ground

Starter SW “ON”

Approx.

12V

8 BR/R

7 BR/W

Power window
motor

Continuity 8-7

-

Continuity

3 B

Ground Continuity

3-Ground

- Continuity

8A-436 ELECTRICAL-BODY AND CHASSIS

Harness side

D5

Driver’s Side Power Window Motor

1. Driver’s Side Power Window & Door Lock Switch

Connector Circuit

Disconnect the switch connector, apply the battery voltage

(12V) to the harness side connector terminals and check

operation.

Connecting terminals

Operation

7 (BR/R)

8 (BR/W)

direction

-

+

DOWN

+

-

UP

D1

2. Driver’s Side Power Window Motor Connector Circuit

Disconnect the switch connector, apply the battery voltage

(12V) to the motor side connector terminals and check

operation.

Connecting terminals

Operation

1 2

direction

+

-

DOWN

-

+

UP

ELECTRICAL-BODY AND CHASSIS 8A-437

Harness side

D10

Front Passenger’s Power Window Motor

1. Front Passenger’s Power Window Switch Connector

Circuit

Disconnect the motor connector, apply the battery voltage

(12V) to the harness side connector terminals and check

operation.

Connecting terminals

Operation

8 (BR/R)

7 (BR/W)

direction

-

+

DOWN

+

-

UP

D6

2. Front Passenger’s Power Window Motor Connector

Circuit

Disconnect the switch connector, apply the battery voltage

(12V) to the motor side connector terminals and check

operation.

Connecting terminals

Operation

1 2

direction

+

-

DOWN

-

+

UP