Isuzu D-Max / Isuzu Rodeo (TFR/TFS). Manual - part 1225

8-240  ELECTRICAL-BODY AND CHASSIS 

WARNING AND INCIDATOR LIGHT 

1.  When the parking brake lever is pulled, the indicator light does not light up 
 

Checkpoint  

Trouble 

Cause 

 

Countermeasure 

 

Replace or reinstall the bulb

Bulb burned out or loose
contact

NG

Adjust or replace the parking
brake SW.

Parking brake SW. installation
position and function

Incorrect SW. adjustment or
poor SW. point contact

Repair open circuit or
connector contact

Continuity between the
parking brake SW. connector
1 

C-39

 (4

´4: 1 

R-4

) and 12

B-23

Open circuit or poor connector
contact

NG

NG

OK

OK

Brake indicator light bulb
continuity

Replace the parking brake
SW.

Continuity between the
parking brake SW. connector
1 

C-39

 (4

´4: 1 

R-4

) and

the ground when the parking
brake is operated

Parking brake SW.
malfunction

NG

OK

 

 
 

ELECTRICAL-BODY AND CHASSIS  8-241 

2.  Even when the parking brake lever is pulled, the indicator light does not go off 
 

Checkpoint  

Trouble 

Cause 

 

Countermeasure 

 

Adjust the SW. installation
position or replace the parking
brake SW.

Incorrect the parking brake
SW. adjustment or brake SW.
faulty

NG

Thermo unit malfunction

Replace the brake fluid level
SW., or vacuum SW., or
repair a short circuit between
the parking brake SW.
connector 1 

C-39

(4

´4: 1 

R-4

) and 12 

B-23

or the brake fluid level SW.
connector 3 

C-37

 and 12

B-23

, or the vacuum SW.

connector 1 

C-38

 and 

B-23

Check to see if the indicator
light goes off when the parking
brake SW. connector 1 

C-39

(4

´4: 1 

R-4

) is disconnected

Brake fluid level SW. or
vacuum SW. faulty or short
circuit

NG

OK

Parking brake SW. installation
position and function

 

 
 
3.  Oil pressure warning light does not go off while engine is running 
 

Refer to ENGINE Section

Refer to ENGINE Section

NG

Thermo unit malfunction

Repair a short circuit between
1 

P-11

 and 10 

B-23

Check to see the warning light
goes off when the oil pressure
SW. connector
1 

P-11

 is disconnected

Short circuit

Replace the oil pressure unit
(or the oil pressure SW.)

Continuity between the oil
pressure SW. connector

1 

P-11

 and the body ground

when the engine is operating

Oil pressure unit (or oil
pressure SW) faulty

NG

NG

OK

OK

Engine oil pressure

 

 
 

8-242  ELECTRICAL-BODY AND CHASSIS 

 

  REMOVAL AND INSTALLATION 

 

 

 

METER ASSEMBLY 

Removal 

1.  Instrument Panel Driver Lower Cover 

·  Refer to the removal steps of “INSTRUMENT PANEL” in

Section 10 “CAB”. 

2.  Lower Cluster Assembly 
 

·  Refer to the removal steps of “INSTRUMENT PANEL” in 

Section 10 “CAB”. 

3.  Instrument Panel Cluster Assembly 

·  Refer to the removal steps of “INSTRUMENT PANEL” in

Section 10 “CAB” 

4. Meter Assembly 

·  Remove four screws of the meter assembly. 
·  Disconnect the meter connectors. 

 

 
 

 

 

Installation 

Follow the removal procedure in the reverse order to install the 
meter. 
Pay close attention to the important points mentioned in the 
following paragraphs. 
 

 
 

 

Connector 

Be absolutely sure that the meter connectors are securely 
connected. 
This will prevent a poor contact and an open circuit. 
 

 
 

 

Wire Harness 

Do not pinch the wire harness between the cluster and the 
meter hood during the meter assembly installation procedure.
Wire damage will result. 
 

ELECTRICAL-BODY AND CHASSIS  8-243 

 

METERS AND GAUGES 

 
 

Installation 

To Install, follow the removal steps in the reverse order. 
 

 

 
 
 

WARNING LIGHT BULB, INDICATOR 

LIGHT BULB AND ILLUMINATION LIGHT 

BULB 

Removal 

Turn the bulb socket counterclockwise and pull the bulb out. 
 

 
 

Installation 

To Install, follow the removal steps in the reverse order. 
 

 

 

 
 

FUEL TANK UNIT 

Removal 

Dismount the fuel tank first, then remove the fuel tank unit. 
1.  Disconnect the fuel tank unit connector. 
2.  Loosen the screws. 
 
 
 
 

3.  Remove the fuel tank unit from the fuel tank.