Step
| Action
| Yes
| No
|
DEFINITION: This table is used
to test the antenna ground plane.
Test the alternator and chassis grounds before the antenna ground is
checked. The whole chassis is used to create a ground plane.
|
1
| Was the
customer complaint verified?
| Go to
Step
2
| Verify the complaint
|
2
|
- Start the engine and RUN at 1500 RPM for at least 2 minutes
to allow the battery to surface charge.
- With the engine at idle, tune the radio to a known strong AM or
FM radio station and set the volume to a comfortable level.
- Connect the J 39200
set to AC Volts across the battery terminals.
- Turn the headlamps on.
Is the measured voltage less than 50 millivolts AC?
| Go to
Step 3
| Go to Charging System Check
|
3
|
- Connect the RED lead of the J 39200
to the battery NEGATIVE cable.
- Connect the BLACK lead of the J 39200
to a "non-painted" surface of the A-pillar of the vehicle.
- With the meter set to AC Volts, the value displayed should be
less than 25 millivolts.
Is the value less than 25 millivolts AC?
| Go to
Step 5
| Go to
Step 4
|
4
|
- Install a braided ground strap between the cowl area and the engine.
- With the meter set to AC Volts, the value displayed should be
less than 25 millivolts.
Is the value less than 25 millivolts AC?
| Go to
Step 5
| Go to Charging System Check
|
5
|
- Connect the RED lead of the J 39200
to the previously tested area of the "A" pillar.
- Connect the BLACK lead of the J 39200
to a "non-painted" surface of the "B" pillar of the vehicle.
- With the meter set to AC Volts, the value displayed should be
less than 25 millivolts.
Is the value less than 25 millivolts AC?
| Go to
Step 7
| Go to
Step 6
|
6
|
- Install a braided ground strap between the seat track area and
the base of the "B" pillar.
- With the meter set to AC Volts, the value displayed should be
less than 25 millivolts.
Is the value less than 25 millivolts now?
| Go to
Step 8
| Go to Charging System Check
|
7
|
- Connect the RED lead of the J 39200
to the "B" pillar.
- Connect the BLACK lead to the window grid.
- The voltage displayed should be less than 25 millivolts.
Is the AC Voltage less than 25 millivolts now?
| Ground Plane OK
| Go to
Step 8
|
8
|
- Install a braided ground strap between the antenna module and
the "C" pillar.
- The voltage displayed should be less than 25 millivolts.
Is the AC Voltage less than 25 millivolts now?
| Ground Plane OK
| Go to Charging System
Check
|
