Alarm System - Activates Intermittently, Dead Battery
90porsche03 February 15, 1990Subject: Alarm System Malfunction/
Battery Discharged
Model Group
911 C2/4 9
Part Identifier Number
9604 9001
ATTENTION: Service Manager/Service Technician
Models Affected: 911 Carrera 2 and 911 Carrera 4
Condition: Alarm system activates intermittently. Battery discharges.
Repair Information: The following contact areas should be checked:
Figure 1:
1. Switch for Engine Compartment Light.
Check the operation of the engine compartment light by lifting the closed lid in the area of the engine compartment light switch approximately 1-3 mm. If the light comes on or alarm activates with alarm system switched on, remove the switch and install an additional washer (2 in Figure 1) PN 900 031 001 60.
Note: Operation of the engine compartment light can be observed through the cooling air inlet with the spoiler raised.
2. Switch for Luggage Compartment Light.
Check adjustment of switch stop bracket. Mounting screws should be in the center of the elongated bracket holes. Install larger washers on mounting screws;
Part Number: N 011 665 3.
Note: If luggage compartment light is on, engine compartment light also comes on. Refer to Wiring Diagram Sheets 1 and 2.
Figure 2:
3. Alarm Contact on Radio Mounting Frame.
The alarm system uses an additional alarm contact on the right side of the radio mounting frame (CD player excluded). An alarm contact insulator (Figure 2) is installed on the right side of the radio. Check insulator for damage and proper installation.
Note: If insulator is damaged or not installed, engine and luggage compartment lights come on. Refer to Wiring Diagram Sheets 1, 2 and 9.