INSPECTION PROCEDURE 11: Noise: Sound mixed with noise, only at night (AM): Diagnosis
- STEP 1. Check the vehicle's lighting system.
Q: Does the noise disappear when the vehicles headlights are turned "OFF"?
YES: Go to Step 2.
NO: Go to Step 3.
- STEP 2. Check if the noise disappears when tuned to a different station.
Tune to a station with a stronger signal.
Q: Is there more noise than on radio in other vehicles?
YES: Consult the radio manufacturer's service center.
NO: Check that there is no noise.
- STEP 3. Check that the noise fades away when the vehicle harness is moved away from the radio (if the harness is not in the proper position).
Q: Does the noise fade away when the vehicle harness is moved any from the radio (If the harness is not in the proper position) ?
YES: Consult the radio manufacturer's service center.
NO: If there is more noise than other radios, consult the radio manufacturer's service center.