Diagnosis/troubleshooting - BOSE

DIAGNOSIS/TROUBLESHOOTING - 8004 EXTERNAL BOSE 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 front right loudspeaker	Switch off ignition Pull off plug A on the amplifier Measure resistance on plug A, pins 29 and 24	= 4 Step 3	Open circuit in the wire/short circuit to ground; Repair wiring harness Step 4
3	Check the rear left and right wiring harness and loudspeakers	Switch off ignition Pull off plug A on the amplifier Check resistance on plug A, pins 23 and 28	< 0.5 Step 4	Step 6
4	Check wiring harness, front right loudspeaker	Pull off plug on the loudspeaker Check the resistance in the wire between pin 26 on plug A of the amplifier and pin 2 of the plug for the front right door loudspeaker	< 0.5 Step 5	Repair wiring harness -> End
5	Check wiring harness, front right loudspeaker	Pull off plug on the loudspeaker Check the resistance in the wire between pin 31 on plug A of the amplifier and pin 1 of the plug for the front right door loudspeaker	< 0.5 Step 8	Repair wiring harness. -> End
6	Check the rear left and right loudspeaker wire	Check the resistance in the wire between pin 23 on plug A of the amplifier and pin 3 of the plug for the rear left and right loudspeaker	< 0.5 Step 7	Open circuit in the wire/short circuit to ground; Repair wiring harness -> End
7	Check the rear left and right loudspeaker wire	Check the resistance in the wire between pin 28 on plug A of the amplifier and pin 4 of the plug for the rear left and rear right loudspeaker	< 0.5 Step 9	Open circuit in the wire/short circuit to ground; Repair wiring harness -> End
8	Replace front right loudspeaker		-> End	Step 10
9	Replace the rear left and right loudspeakers		-> End	Step 10
10	Replace amplifier		-> End	-