Isuzu D-Max / Isuzu Rodeo (TFR/TFS). Manual - part 1559

8-336  ELECTRICAL-BODY AND CHASSIS

  INSPECTION AND REPAIR

Switch side

REAR DEFOGGER SWITCH

Rear Defogger Switch Connections

Terminal No.

SW position

3

5

4

6

2

ON

OFF

REAR DEFOGGER RELAY

Check continuity between the relay terminals.

1

- 

5

........................ No continuity

(When battery voltage is applied between 

2

 and 

4

)

1

- 

5

........................ Continuity

INSPECTION OF REAR DEFOGGER HEAT

WIRE

• Heat wires are printed on the inner side of glass.

To  clean,  use  a  soft  cloth  and  wipe  horizontally  along  the

wires.

• Never use glass cleaner or equivalent.
• When measuring voltage, wind a piece of tin foil around the

tip of the negative probe and press the foil against the wire

with your finger as shown.

(1) Turn the ignition switch on.

(2) Turn the defogger switch on.

(3) Measure  the  voltage  between  the  three  points  on  the  heat

wire and the (-) terminal with a voltmeter.

(4) Check that the voltage becomes smaller from 

A

 to 

B

 to 

C

.

ELECTRICAL-BODY AND CHASSIS  8-337

(5) If  there  is  a  place  where  the  voltage  suddenly  changes  to

0V,  there  is  a  broken  wire  between  there  and  the  power

side.

(6) Move  the  tester  probe  from  the  position  where  the  voltage

changes  to  0V  toward  the  power  side  and  find  where  the

voltage suddenly increases.

REPAIR OF BROKEN HEAT WIRE

(1) Clean broken wire tips with white gasoline.

(2) Place masking tape along both sides of wire to be repaired.

(3) Thoroughly mix the repair agent (Dupont paste No. 4817 or

equivalent).

(4) Using a fine tip brush, apply a small amount to the wire.

(5) After a couple of minutes, remove the masking tape.

(6) Allow to stand at least 24 hours.

8-338  ELECTRICAL-BODY AND CHASSIS

RADIATOR LEVEL CONTROL WARNING SYSTEM

PARTS LOCATION

ELECTRICAL-BODY AND CHASSIS  8-339

CIRCUIT DIAGRAM