Isuzu Trooper (1998-2002 year). Service manual — part 983

8D–466

WIRING SYSTEM

7-3 While The Engine Is Operating, The Oil Pressure Warning Light Does Not Go Off

•

IS THE ENGINE OIL PRESSURE NORMAL?

YES

•

WITH THE OIL PRESSURE SWITCH CONNECTOR
E-1 OR E-2 DISCONNECTED, DOES THE
WARNING LIGHT GO OFF?

YES

REFER TO THE “ENGINE” SECTION

NO

REPAIR A SHORT CIRCUIT BETWEEN 1 E-1
OR 2 E-12 AND THE METER

NO

•

WHILE THE ENGINE IS OPERATING, IS THERE
CONTINUITY BETWEEN THE OIL PRESSURE SWITCH
CONNECTOR 1 E-1 AND THE BODY GROUND?

YES

REPLACE THE METER ASSEMBLY

REPLACE THE OIL PRESSURE SWITCH

NO

7-4 Even When The Fuel Tank Is Full With Fuel, The Low Fuel Warning Light Lights Up

•

WHEN THE ALARM & RELAY CONTROL UNIT
CONNECTOR B-7 IS DISCONNECTED,
DOES THE WARNING LIGHT GO OFF?

YES

•

IS THE FUEL TANK UNIT NORMAL?

YES

REPLACE THE METER ASSEMBLY

REPAIR A SHORT CIRCUIT BETWEEN THE ALARM
& RELAY CONTROL UNIT HARNESS SIDE
CONNECTOR 6 B-7 AND 18 I-10 (METER)

NO

REPLACE THE FUEL TANK UNIT

NO

WIRING SYSTEM

8D–467

7-5 Even When The Fuel Tank Is Empty, The Low Fuel Warning Light Does Not Light Up

•

DOES THE WARNING LIGHT HAVE A BURNED OUT
BULB, OR IS THE SOCKET POORLY CONNECTED?

•

•

DISCONNECT THE ALARM &
RELAY CONTROL UNIT
CONNECTOR B-7
WHEN CONNECT THE
HARNESS SIDE CONNECTOR
6 B-7 WITH THE GROUND,
DOES THE WARNING LIGHT
LIGHT UP?

YES

•

IS THE FUEL TANK UNIT NORMAL?

REPLACE THE BULB, OR REPAIR A POOR
CONNECTION AT THE SOCKET

NO

REPLACE THE FUEL TANK
UNIT

NO

YES

REPLACE THE ALARM &
RELAY CONTROL UNIT

REPAIR A POOR
CONNECTION AT THE
CONNECTORS OR AN OPEN
CIRCUIT BETWEEN 6 B-6
AND THE METER

NO

YES

8D–468

WIRING SYSTEM

A/T Shift Indicator

General Description

The circuit consists of mode switch, A/T shift indica-
tor control unit and A/T shift indicator (meter).
A/T shift indicator control unit controls to illuminate
A/T shift indicator light according to signals from
mode switch.

WIRING SYSTEM

8D–469

Circuit Diagram (RHD)-1

D08RW639

3.0

B/Y

0.85

R/B

0.85

G/R

0.85

R/B

C-3 10A

TURN,BACK

STARTER SW

(IG1)

STARTER SW

(ST)

12

C-93

13

C-93

1

C-93

H-7

17

H-41

TAIL RELAY

(4)

PCM

(E12)

PCM

(E7)

PCM

(F2)

PCM

(F3)

BACK UP

LIGHT

STARTER

RELAY

(5)

1

H-53

1

0.5

R/B

0.75

R/B

0.5

L/W

0.5

L/Y

0.5

L/B

0.5

L/W

0.5

L/Y

0.5

L/B

0.5

L/W

0.5

L/Y

0.5

L/B

0.5

Y/G

0.75

R/L

1.25

W/L

1.25

W/R

MODE

SW

M-25

5

6

8

H-11

M-25

A/T SHIFT INDICATOR CONTROL UNIT

2

C-93

H-53

2

M-25

6

3

C-93

H-53

3

M-25

7

H-53

4

M-25

2

H-11

7

M-25

3

H-10

15

M-25

4

M-25

1

H-10

16