8005 External Harman amplifier: Diagnosis/troubleshooting

DIAGNOSIS/TROUBLESHOOTING - 8005 EXTERNAL HARMAN AMPLIFIER

Work instruction			Display OK	If not OK
1	Read out external amplifier fault memory	Connect the Porsche System Tester II 9588 to the diagnostic socket; switch on the ignition and the Porsche System Tester II 9588 Select 986 as the vehicle type and start the automatic control module search In the Control units menu, select PCM2 In the PCM2 menu, select External amplifier Make a selection in the Fault memory menu and start with the ">>" key Read out fault memory Erase fault memory Remove ignition key and switch on ignition again Read out fault memory Extract ambient data, press the ">>" key	-> End	Fault code is still displayed Step 2
2	Check wiring harness and left door loudspeaker	Switch off ignition Pull off plug A on the amplifier Check resistance on plug A, pins 7 and 16	= 4 Step 7	Step 3
3	Check wiring harness to left door loudspeaker	Pull off the plug on the left door speakers Check the resistance in the wire between pin 7 on plug A of the amplifier and pin 2 of the plug for the front right door loudspeaker	< 0.5 Step 4	Repair open circuit in wiring harness -> End
4	Check wiring harness to left door loudspeaker	Pull off the plug on the left door loudspeaker Check the resistance in the wire between pin 16 on plug A of the amplifier and pin 1 of the plug for the left door loudspeaker	< 0.5 Step 5	Repair open circuit in wiring harness -> End
5	Check wiring harness to left door loudspeaker	Pull off the plug on the door loudspeaker Check the resistance in the wire from pin 7 on plug A of the amplifier to pin 16	Step 6	Repair short circuit in wiring harness -> End
6	Check wiring harness to left door loudspeaker	Check the resistance in the wire between pin 7 on plug A of the amplifier and pin 14	Step 9	Repair short circuit to ground in wiring harness -> End
7	Check wiring harness to left door loudspeaker	Check the resistance in the wire from pin 7 on plug A of the amplifier to ground	Step 8	Repair short circuit to ground in the wiring harness -> End
8	Check wiring harness to left door loudspeaker	Check the voltage of the wire from pin 7 on plug A of the amplifier to ground Switch ignition on	< 0 V Step 8	Repair short circuit to B+ in the wiring harness -> End
9	Check wiring harness to left door loudspeaker	Check the voltage of the wire from pin 16 on plug A of the amplifier to ground Switch ignition on	0 V Step 10	Repair short circuit to B+ in the wiring harness -> End
10	Replace front left door loudspeaker		-> End	Step 10
11	Replace amplifier		-> End	-