Isuzu Rodeo UE. Manual - part 594

8D–224

WIRING SYSTEM

Step

No

Yes

Value(s)

Action

3

Is the engine coolant temperature unit normal?

—

Repair a poor

connection at

the connector

Replace the

unit

4

Is the circuit between the engine coolant temperature
gauge and the engine coolant temperature unit
normal?

—

Replace the

meter

assembly

Replace a

poor

connection of

the

connectors or

an open

circuit.

Gauge Reading Is Too Low (Or High)

Step

Action

Value(s)

Yes

No

1

Does the thermostat operate normally?

—

Go to Step 2

Replace the

thermostat

2

Turn the starter switch on.

When inserting and pulling out the thermostat
connector E–19 terminal 1 several times, does the
indication of the gauge vary?

—

Go to Step 3

Go to Step 4

3

Repair a poor connection at the connector of the
thermo unit.

—

4

Is the engine coolant temperature unit normal?

—

Repair an

open or short

circuit

Replace the

unit

Needle Overshoots (Or Goes Up To The “H” Range)

Step

Action

Value(s)

Yes

No

1

Disconnect the connector of the engine coolant
temperature unit.

When the starter sw is turned on, does the pointer
reach to the “H” range?

—

Go to Step 2

Replace the

unit

2

Is there a short circuit between the engine coolant
temperature unit and the engine coolant temperature
(ECT) gauge?

—

Go to Step 3

Go to Step 4

3

Repair the short circuit.

Is the action complete?

—

Verify repair

—

4

Is the printed circuit of the meter assembly grounded
securely?

—

Go to Step 5

Repair or

replace the

printed circuit

board

5

Check the ECT gauge, and replace it if necessary.

Is the action complete?

—

Verify repair

—

8D–225

WIRING SYSTEM

Diagnosis

Even When The Tank Is Not Full Of Fuel, The Needle Overshoots (Or Goes Up To “F”)

Step

Action

Value(s)

Yes

No

1

1. Disconnect the connector of the fuel tank unit.
2. Turn the starter sw on.

Does the needle still point to “F”?

—

Go to Step 4

Go to Step 2

2

Remove the fuel tank unit.

Does the float arm operate smoothly?

—

Go to Step 3

Replace the

fuel tank unit.

3

Are the resistance values of the fuel tank unit at “E” and
“F” points normal?

—

Replace the

fuel tank unit.

4

Is the circuit between the fuel tank unit and the fuel
gauge normal?

—

Go to Step 5

Repair a

short circuit in

the circuit.

5

Is the printed circuit of the meter assembly grounded
securely?

—

Check the

fuel gauge,

and replace it

if necessary.

Repair or

replace the

printed circuit

board.

When The Parking Brake Lever Is Pulled, The Indicator Light Does Not Light Up

Step

Action

Value(s)

Yes

No

1

1. Disconnect the parking brake switch connector.
2. Connect the harness side connector to the ground.
3. Turn the starter switch on.

Does the indicator light light up?

—

Go to Step 4

Go to Step 2

2

Does the indicator light have a burned out bulb, or is the
socket poorly connected?

—

Replace the

bulb or repair

the poor

connection at

the socket.

Go to Step 3

3

Is there continuity in the circuit between the parking
brake switch connector B–23 terminal 1 and I–1
terminal 8 (meter)?

—

—

Repair a poor

connection at

the

connectors or

an open

circuit in the

circuit.

4

Is the parking brake switch installed to the correct
position?

—

Go to Step 5

Adjust the

installation

position.

5

Pull the parking brake.

Is there continuity between the switch connector B–23
terminal 1 and ground?

—

Ground the

parking brake

switch

securely.

Repair or

replace the

parking brake

switch.

8D–226

WIRING SYSTEM

Even When The Parking Brake Lever Is Released, The Indicator Light Does Not Go Off

Step

Action

Value(s)

Yes

No

1

Is the parking brake switch installed to the correct
position, and does it operate normally?

—

Go to Step 2

Adjust the

switch

installation

position.

2

Disconnect the parking brake switch connector B–23.

Does the indicator light go off?

—

Repair or

replace the

switch.

Go to Step 3

3

Is the brake fluid sufficient?

—

Go to Step 4

Replenish the

brake fluid.

4

Is the brake fluid switch normal?

—

Go to Step 5

Replace the

brake fluid

tank.

5

Repair a short circuit between the parking brake switch
connector B–23 terminal 1 and I–1 terminal 8, or the
brake fluid switch connector I–1 terminal 8 and C–6
terminal 2.

Is the action complete?

—

Verify repair

—

While The Engine Is Operating, The Oil Pressure Warning Light Does Not Go Off

Step

Action

Value(s)

Yes

No

1

Is the engine oil pressure normal?

—

Go to Step 2

Refer to the

“Engine”

section of this

manual.

2

Disconnect the oil pressure switch connector E–1
disconnected.

Does the warning light go off?

—

Go to Step 3

Repair a

short circuit

between

connector

E–1 terminal

1 and I–1

terminal 4

(meter).

3

Is there continuity between the oil pressure switch
connector E–1 terminal 1and the body ground?

—

—

Replace the

oil pressure

switch.

Even When The Fuel Tank Is Full Of Fuel, The Fuel Warning Light Lights Up

Step

Action

Value(s)

Yes

No

1

Disconnect the fuel tank unit connector F–1.

Does the warning light go off?

—

Go to Step 2

Repair a

short circuit

between the

fuel tank unit
harness side

connectors

PCM B15 and

connector I–9

terminal 9

(meter).

2

Is the fuel tank unit normal?

—

—

Replace the

fuel tank unit.

8D–227

WIRING SYSTEM

Even When The Fuel Tank Is Empty, The Fuel Warning Light Does Not Light Up

Step

Action

Value(s)

Yes

No

1

Does the warning light have a burned out bulb, or is the
socket poorly connected?

—

Replace the

bulb, or repair

a poor

connection at

the socket.

Go to Step 2

2

Is the fuel tank unit normal?

—

Go to Step 3

Replace the

fuel tank unit.

3

Repair a poor connection at the connector or an open
circuit in the circuit between the harness side connector
F–1 terminal 4 and I–2 terminal 13 (meter).

Is the action complete?

—

Verify repair

—

Starter Switch

Refer to “START AND CHARGING” in this section.

Lighting Switch / Dimmer Passing Switch /
Headlight

Refer to “HEADLIGHT AND FOG LIGHT” in the section.

Turn Signal Switch

Refer to “TURN SIGNAL LIGHT, HAZARD WARNING
LIGHT, CORNERING LIGHT, BACKUP LIGHT AND
HORN” in this section.

Illumination Controller

Refer to “FRONT SIDE MAKER LIGHT, PARKING
LIGHT, TAILLIGHT,LICENSE PLATE LIGHT AND
ILLUMINATION LIGHT” in the section.