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.

DIAGNOSTIC PROCEDURE CHART

PINPOINT TEST 7		RADIO INTERFERENCE
STEP	INSPECTION		ACTION
1	VERIFY THE GENERATOR IS THE SOURCE OF THE RADIO INTERFERENCE Start the engine and allow the engine to idle. Tune the ACM to a station where the interference is present. Key in OFF position. Start the engine and allow the engine to idle, determine if the interference is still present. Is the interference present with the generator disconnected?	Yes	See ENTERTAINMENT SYSTEM for diagnosis and testing of the in-vehicle entertainment system.
1		No	INSTALL a new generator. See GENERATOR REMOVAL/INSTALLATION - 2.5L or GENERATOR REMOVAL/INSTALLATION - 3.0L . TEST the system for normal operation.