Pinpoint Test 7: Radio Interference
PINPOINT TEST 7: RADIO INTERFERENCE
Normal Operation
The generator radio suppression equipment reduces interference transmitted through the speakers by the vehicle electrical system.
Possible Causes
- Generator
- Wiring, terminals or connectors
- In-vehicle entertainment system
Diagnostic Procedure
NOTE:If the OEM audio control module (ACM) has been replaced with an aftermarket unit, the vehicle may not pass this test. Return the vehicle to OEM condition before following this pinpoint test.
NOTE:If the engine is operated at greater than 2,000 RPM momentarily, the generator will self-excite. Make sure when the generator is disconnected the engine RPM stays below 2,000 RPM. If it does rise above 2,000 RPM, turn the ignition to the off position and start the test over again.
NOTE:Inspect for any after market accessories that have been added to the vehicle. Check the wiring for these accessories and be sure they have not been attached to the generator circuits and are positioned away from the generator wiring.
