LEMON Manuals: Even more car manuals for everyone
Home >> Porsche >> 2011 >> 911 Speedster >> Repair and Diagnosis >> External Pages >> Different car >> Section 8 (Radio, Navigation & Pcm Diagnosis - 911 CARRERA (996)) >> 8003 External Harman amplifier >> Diagnosis/troubleshooting for Harman

Diagnosis/troubleshooting for Harman

WARNING: This page does not describe the selected car, but rather 7 other vehicles, including the 2005 Porsche 911, 2004 Porsche 911, 2003 Porsche 911, 2002 Porsche 911, and 2001 Porsche 911. However, it is still accessible from the selected car via links, so may be relevant.
DIAGNOSIS/TROUBLESHOOTING (8003 EXTERNAL HARMAN AMPLIFIER)

Work instruction Display OK If not OK
1 Read out external amplifier fault memory
  • Connect and start the Porsche System Tester II 9588 and switch on the ignition.
  • Select 911 (996) in the Vehicle type menu and confirm with the "FORWORD" key.
  • Select PCM in the Control units menu and confirm with the "FORWORD" key.
  • Select External Harman amplifier in the 911 (996) PCM2 function selection and confirm with the "FORWORD" key.
  • Select Fault memory in the External Harman amplifier function selection and confirm with the "FORWORD" 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 "FORWORD" key.
 -> End Fault code is still displayed
Step 2
2 Check wiring harness and left dashboard loudspeaker
  • Switch off ignition.
  • Pull off plug A on the amplifier.
  • Measure resistance on plug A, pins 5 and 14.
 = 4
5		 Step 3
3 Check wiring harness to left dashboard loudspeaker
  • Pull off the plugs on the loudspeakers.
  • Check the resistance in the wire between pin 5 on plug A of the amplifier and pin 2 of the plug for the front right door speaker.
 < 0.5
Step 4		 Repair circuit in wiring harness
-> End
4 Check wiring harness to left dashboard loudspeaker
  • Pull off the plug on the left dashboard loudspeaker.
  • Check the resistance in the wire between pin 14 on plug A of the amplifier and pin 1 of the plug for the front right door speaker.
 < 0.5
Step 6		 Repair open circuit in wire
-> End
5 Check wiring harness to left dashboard loudspeaker
  • Pull off the plugs on the loudspeakers.
  • Check the resistance in the wire from pin 5 on plug A of the amplifier to pin 14.
 Step 6 Repair short circuit in wiring harness
-> End
6 Check wiring harness to left dashboard loudspeaker
  • Check the resistance in the wire from pin 14 on plug A of the amplifier to ground.
 Step 7 Short circuit to ground. Repair wiring harness
-> End
7 Check wiring harness to left dashboard loudspeaker
  • Check the resistance in the wire from pin 5 on plug A of the amplifier to ground.
 Step 8 Short circuit to ground. Repair wiring harness
-> End
8 Check wiring harness to left dashboard loudspeaker
  • Check the voltage of the wire from pin 5 on plug A of the amplifier to ground.
  • Switch ignition on.
 0 V
Step 9		 Repair short circuit to B+ in the wiring harness
-> End
9 Check wiring harness to left dashboard loudspeaker
  • Check the voltage of the wire from pin 14 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 Check wiring harness and right dashboard loudspeaker
  • Switch off ignition.
  • Pull off plug A on the amplifier.
  • Measure resistance on plug A, pins 6 and 15.
 = 4
13		 Step 11
11 Check wiring harness and right dashboard loudspeaker
  • Pull off the plugs on the loudspeakers.
  • Check the resistance in the wire between pin 6 on plug A of the amplifier and pin 1 of the plug for the front right door speaker.
 < 0.5
Step 12		 Repair open circuit in wiring harness
-> End
12 Check wiring harness and right dashboard loudspeaker
  • Check the resistance in the wire between pin 15 on plug A of the amplifier and pin 2 of the plug for the front right door speaker.
 < 0.5
Step 13		 Repair open circuit in wire
-> End
13 Check wiring harness and right dashboard loudspeaker
  • Check the resistance in the wire from pin 6 on plug A of the amplifier to pin 14.
 Step 14 Repair short circuit in wiring harness
-> End
14 Check wiring harness to right dashboard loudspeaker
  • Check the resistance in the wire from pin 15 on plug A of the amplifier to ground.
 Step 15 Short circuit to ground. Repair wiring harness
-> End
15 Check wiring harness to right dashboard loudspeaker
  • Check the resistance in the wire from pin 6 on plug A of the amplifier to ground.
 Step 16 Short circuit to ground. Repair wiring harness
-> End
16 Check wiring harness to right dashboard loudspeaker
  • Check the voltage of the wire from pin 6 on plug A of the amplifier to ground.
  • Switch ignition on.
 0 V
Step 17		 Repair short circuit to B+ in the wiring harness
-> End
17 Check wiring harness to right dashboard loudspeaker
  • Check the voltage of the wire from pin 15 on plug A of the amplifier to ground.
  • Switch ignition on.
 0 V
Step 18		 Repair short circuit to B+ in the wiring harness -> End
18 Check left dashboard loudspeaker
  • Check resistance on plug A of the loudspeaker, pins 1 and 2.
 = 4
Step 19		 Step 20
19 Check right dashboard loudspeaker
  • Check resistance on plug A of the loudspeaker, pins 1 and 2.
 = 4
Step 22		 Step 21
20 Replace left dashboard loudspeaker -> End Step 19
21 Replace right dashboard loudspeaker -> End Step 11
22 Replace amplifier -> End  
scientia non olet · About LEMON Manuals