Opel Frontera UBS. Service manual — part 1615
8D–138
WIRING SYSTEM
1–5. Both Headlights In High-Beam Inoperative
•
DISCONNECT THE DIMMER•
PASSING SW CONNECTOR (COMBINATION SW)
YES
REPAIR A POOR CONNECTION AT THE CONNECTORS
OR AN OPEN CIRCUIT BETWEEN
15 B-12 AND 16 H-16
REPAIR OR REPLACE THE DIMMER•
PASSING SW
NO
•
WITH THE SWITCH AT HIGH-BEAM, IS THERE
CONTINUITY BETWEEN THE SWITCH CONNECTOR TERMINALS
15 B-12 AND 16 B-12 ?
1–6. Headlight High-Beam On The Left (Or Right) Side Inoperative
•
IS THE HEADLIGHT BULB ON THE
LEFT (OR RIGHT) SIDE NORMAL?
YES
•
IS THE FUSE F–4 (15A) (OR F–5 (15A))
NORMAL?
YES
REPLACE THE BULB
NO
•
DISCONNECT THE DIMMER·PASSING SW CONNECTOR
•
WITH THE SWITCH AT THE HIGH–BEAM POSITION, IS THERE
CONTINUITY BETWEEN 15 B–12 AND 16 B–12 ?
YES
REPLACE THE FUSE
NO
REPAIR A POOR CONNECTION AT THE CONNECTORS
OR AN OPEN CIRCUIT BETWEEN 3 C–21 AND F–4
(15A) (OR 3 C–32 AND F–5 (15A))
NO
REPAIR OR REPLACE THE DIMMER·PASSING SW
REPAIR A POOR CONNECTION AT THE CONNECTORS OR AN
OPEN CIRCUIT BETWEEN 15 B–12 AND 2 C–21 (OR 15 B–12
AND 2 C–32 )
•
IS THE CONTINUITY BETWEEN
3 C–21 AND F–4 (15A) (OR 3 C–32
AND F–5 (15A)) NORMAL?
NO
YES
WIRING SYSTEM
8D–139
1-7. Headlight Beam Does Not Change
1-8. Headlights Remain On When The Lighting SW Is Turned Off
YES
•
DISCONNECT THE DIMMER•PASSING
SW
REPAIR OR REPLACE THE DIMMER•PASSING SW
NO
•
DOES THE LEVER OF THE DIMMER•
PASSING SW OPERATE SMOOTHLY AND SECURELY?
•
WITH THE SWITCH AT THE LOW-BEAM POSITION, IS
THERE CONTINUITY BETWEEN 13 B-12 AND 16 B-12 ?
ALSO, WITH IT AT THE HIGH-BEAM POSITION, IS THERE
CONTINUITY BETWEEN 15 B-12 AND 16 B-12 ?
NO
REPAIR OR REPLACE THE DIMMER•PASSING SW
YES
•
REPLACE THE LIGHTING RELAY
NO
•
IS THE LIGHTING RELAY NORMAL?
REPAIR OR REPLACE THE LIGHTING SW
NO
DISCONNECT THE LIGHTING SW CONNECTOR
•
IS THE CONTINUITY BETWEEN
THE SWITCH CONNECTOR TERMINALS 1 B-12 AND
7 B-12 NORMAL?
YES
REPAIR A SHORT CIRCUIT BETWEEN
5 X-1 AND 1 B-12
8D–140
WIRING SYSTEM
REPAIR OR REPLACE THE LIGHTING SW
1-10. Passing Lights Inoperative
•
DISCONNECT THE DIMMER•PASSING SW CONNECTOR
YES
REPAIR A POOR CONNECTION AT THE CONNECTORS
OR AN OPEN CIRCUIT BETWEEN 5 H-15 AND
14 B-12
REPAIR OR REPLACE THE SWITCH
NO
•
WITH THE SWITCH AT PASSING POSITION, IS THERE
CONTINUITY BETWEEN THE SWITCH CONNECTOR TERMINALS
14 B-12 AND 16 B-12 , AND 15 B-12 AND 16 B-12 ?
1-9. Headlights Come On With The Lighting SW At The Clearance Light Position
WIRING SYSTEM
8D–141
2-1. Both Headlights Inoperative
•
IS THE LIGHTING RELAY NORMAL?
YES
REPLACE THE RELAY
NO
•
IS B-19 GROUNDED SECURELY?
YES
NO
GROUND IT SECURELY
•
IS THE DIODE NORMAL ?
YES
NO
REPLACE THE DIODE
•
IS THE DIMMER RELAY NORMAL?
YES
NO
REPLACE THE RELAY
•
•
DISCONNECT THE LIGHTING SW CONNECTOR
YES
NO
•
•
REMOVE THE LIGHTING SW
YES
NO
REPAIR A POOR CONNECTION AT THE CONNECTORS
OR AN OPEN CIRCUIT BETWEEN THE FUSIBLE LINK
FL-1 (80A) AND 1 B-12
REPAIR OR REPLACE THE LIGHTING SW
REPAIR A POOR CONNECTION AT THE CONNECTORS OR
AN OPEN CIRCUIT BETWEEN THE LIGHTING SW HARNESS SIDE
CONNECTOR 7 B-12 AND B-19
IS THE BATTERY VOLTAGE APPLIED BETWEEN THE
HARNESS SIDE CONNECTOR 1 B-12 AND GROUND?
IS THERE CONTINUITY BETWEEN 1 B-12 AND 7 B-12 WHEN
SETTING THE LIGHTING SW AT THE HEADLIGHT POSITION?
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