Glass Antenna Test
| 1. |
Wrap aluminum foil (A) around the tip of the
tester probe (B) as shown.
|
| 2. |
Touch one tester probe to the glass antenna
terminal (A) and move the other tester probe along the antenna wires
to check that continuity exists.
|
Glass Antenna Repair
|
To make an effective repair, the broken
section must be no longer than one
inch. |
| 1. |
Lightly rub the area around the broken section
(A) with fine steel wool, and then clean it with
alcohol.
|
| 2. |
Carefully mask above and below the broken
portion of the glass antenna wire (B) with cellophane tape
(C). |
| 3. |
Using a small brush, apply a heavy coat of
silver conductive paint (A) extending about 1/8″on both sides of the
break. Allow 30 minutes to dry.
|
Thoroughly mix the paint before
use. |
|
| 4. |
Check for continuity in the repaired
wire. |
| 5. |
Apply a second coat of paint in the same way.
Let it dry three hours before removing the
tape. |
Glass Antenna Circuit Inspection
| 1. |
Remove the right side rear quarter
trim.
Then disconnect the antenna feeder cable (A)
from the glass antenna amp. |
| 2. |
Turn the radio ON.
Measure the voltage between the harness side
feeder cable (A) and body ground (B).
OK :
approximately 12V
(ACC+)
|
|
| 3. |
Check for FM wire resistance between terminals
of No.1 and 3
1. FM antenna grid terminal
2. AM antenna grid terminal
3. Body ground.
Standard value
: 80~120KΩ
Short :
Approx. 0Ω
Open
: ∞ Ω
| |
| 4. |
Check for AM wire resistance between terminals
of No.2 and 3.
Standard value
: 120~170KΩ
Short
: Approx. 0Ω
Open
: ∞ Ω
| |
| 5. |
Check the grid lines for
continuity. |
| 6. |
When a poor radio reception is not repaired
through the above inspection methods, replace the amp.
If the radio reception is still poor, check
the radio cable for short and radio head unit for
failure. |
Antenna Cable
| 1. |
Remove the antenna jack (A) from the AVN unit
and antenna.
|
| 2. |
Check for continuity between the center poles
of antenna cable.
|
| 3. |
Check for continuity between the outer poles
of antenna cable. There should be continuity.
|
| 4. |
If there is no continuity, replace the antenna
cable. |
| 5. |
Check for continuity between the center pole
(A) and window antenna pole (B). There should be
continuity.
|
| 6. |
If there is not continuity, replace the
external amplifier. |
| 7. |
Check for continuity between the center pole
(A) and outer pole (B) of antenna cable. There should be no
continuity.
|
| 8. |
If there is continuity, replace the antenna
cable. |
