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5.5 Loudspeaker Systems (LS)  >   12 Diagnosis - Complaint Related Diagnostic Chart

Complaint/Problem Possible cause Test step/Remedy 1) Loudspeaker system not functioning Left/right audio power amplifier (N40/3) Radio (A2) 23 1.0 Left front door speaker group (H4/1) not functioning H4/1 Left/right audio power amplifier (N40/3) Radio (A2) 23 2.0 Right front door speaker group (H4/2) not functioning H4/2 Left/right audio power amplifier (N40/3) Radio (A2) 23 3.0 Sedan Left rear door speaker (H4/3) not functioning Coupé Left front door speaker (H4/5) not functioning H4/3 or H4/5 Left/right audio power amplifier (N40/3) Radio (A2) 23 4.0 Sedan Right rear door speaker (H4/4) not functioning Coupé Right front door speaker (H4/6) not functioning H4/4 or H4/6 Left/right audio power amplifier (N40/3) Radio (A2) 23 5.0 Left rear speaker group (H4/7) not functioning H4/7 Left/right audio power amplifier (N40/3) Radio (A2) 23 6.0 Right rear speaker group (H4/8) not functioning H4/8 Left/right audio power amplifier (N40/3) Radio (A2) 23 7.0 Center fill tweeter speaker (H4/11), in mirror base, not functioning H4/11 Left/right audio power amplifier (N40/3) Radio (A2) 23 8.0 1) Observe Preparation for Test, see 22.