Step
| Action
| Value(s)
| Yes
| No
|
|
Important: A short to ground will cause a open fuse(s). Before performing this
diagnostic procedure, inspect the fuse(s) for an open.
|
1
| Was the Radio/Audio Diagnostic System Check performed?
|
| Go to
Step 2
| Go to
Diagnostic System Check - Radio/Audio System
|
2
|
- Raise the vehicle on a hoist with the suspension safely supported
at ride height.
- Disconnect the radio connectors.
- Use the J 35616
in order to connect the J 39200
to the radio connector C1 cavities (CKT 817)
and 5 (CKT 350). Red to 16, Black to 5.
- Set the J 39200
to measure DC Volts.
- Push the Hz button 1 time on the J 39200
(Hz should be displayed on the right side of the J 39200
screen).
- Start the vehicle.
- Depress the brake pedal.
- Put the vehicle in forward gear.
- Release the pressure on the brake pedal.
- Accelerate the vehicle to maintain a constant speed of 40 kph
(25 mph).
- Inspect the value on displayed on the J 39200
Is the value within the specified range?
| 25-30 Hz
| Go to
Step 3
| Go to
Step 4
|
3
|
- Inspect for proper terminal contact at the receiver.
- Replace the receiver if there is proper terminal contact at the
receiver. Refer to
Radio Replacement
.
Is the repair complete?
|
| Go to
Step 6
| Go to
Step 5
|
4
| Repair the
open or high resistance in CKT 817 between the radio connector C1
terminal 16 and S221.
Is the repair complete?
|
| Go to
Diagnostic System Check - Radio/Audio System
|
|
5
| Repair the terminal. Refer to
Wiring Repairs
in Wiring Systems.
Is the repair complete?
|
| Go to
Diagnostic System Check - Radio/Audio System
|
|
6
| Replace the radio. Refer to
Radio Replacement
.
Is the repair complete?
|
| Go to
Diagnostic System Check - Radio/Audio System
|
|
