Audio - Whistling Noises When Playing Cassette Tape: Overview

911 (996)

2/99 9110

Binder - 9, Electrics

6/24/99

PCM Cassette Player Noises

Date: 6-24-99

Vehicle Type:
911 (996) (with M662)

Model Year:
As of 1999 (X)

Concern:

Whistling noise from the loudspeakers when playing a cassette tape on vehicles equipped with the Porsche Communication Management System (PCM).

Information:
It is possible for PCM equipped vehicles (M662) produced before April 30, 1998 to exhibit a whistling noise from the loudspeakers when playing a cassette tape. The noise is usually heard at low volume levels and changes with engine/alternator rpm. A suppressor kit can be retrofitted into vehicles produced prior to April 30, 1998 to address customer complaints concerning this noise.

Parts Info.:

000 043 204 29 Interference-suppression choke kit.
Includes: Interference-suppression choke, wiring harness and retaining bracket (Figure 1), 2 hexagon-head bolts M 6 x 25, piece of foam insulation

Tools Required:

Hole punch or sharp knife
10 mm wrench
Porsche System Tester 2 (PST2)
Torx TX5 socket
Shop lamp

Working Time:

Labor Operation Time Units Description

91 10 41 03 90 TU Repairing display and operator control unit (PCM).
Includes: Installing interference-suppression choke alarm system function test, entering PCM code, erasing DME fault memory.

Literature:

911 Carrera (996), Group 9, section:
91 10 19 - Removing and installing display and operator control unit (PCM).