interior lights ISUZU TROOPER 1998 Service Repair Manual

8DÐ180 WIRING SYSTEM
Interior Illumination Light
General Description
The circuit consists of a lighting switch, tail relay,
illumination controller and illumination lights.
All these lights come on when the lighting switch is
turned on with the switch turned to either parking or
headlight position.
The brightness of illumination lights except the ones
for ashtray, glove box and vanity mirror, can be
adjusted by the illumination controller.

8DÐ192 WIRING SYSTEM
Diagnosis
Interior Illumination Lights Inoperative
NOYES
REPAIR A POOR CONNECTION AT THE
CONNECTORS OR AN OPEN CIRCUIT
BETWEEN 2 I-7 AND B-19
NOYES
IS B-19 GROUNDED SECURELY?·
·IS THERE CONTINUITY BETWEEN 3 I-7 AND
THE GROUND?
YES
REPLACE THE ILLUMINATION CONTROLLER
GROUND IT SECURELY
REMOVE THE ILLUMINATION CONTROLLER
IS THERE CONTINUITY BETWEEN 2 I-7 AND
THE GROUND? ·
·
WITH THE LIGHTING SWITCH AT CLEARANCE LIGHT
POSITION, IS THE BATTERY VOLTAGE APPLIED BETWEEN
1 I-7 AND THE GROUND?·
NOYES
REPAIR A POOR CONNECTION AT THE
CONNECTORS OR AN OPEN CIRCUIT
BETWEEN 4 X-9 AND 1 I-7
NO
REPAIR A POOR CONNECTION AT THE
CONNECTORS OR AN OPEN CIRCUIT
BETWEEN TAIL RELAY AND 3 I-7