Dr Ing hc F Porsche Aktiengesellschaft

911 Carrera 2 OA/Ofl

911 Carrera 4 Fuel System - Electronic Control / fcC

Test point Description Page

Precautions 2

Important vehicle information 3

Testing requirements 4

Effect of faults (cross reference list) 7

DME control unit plug connections 8

1 Power supply 9

2 Idle speed contact 10

3 Full load contact 11

4 Engine temperature sensor 12

5 Air flow sensor 13

6 Idle speed control activation 14

7 Oxygen regulation stop 15

8 Oxygen sensor 16

9 I ntake air temperature sensor 16

10 Knock sensor 1 17

11 Knock sensor II 17

12 Control unit faulty 18

13 Hall signal 18

14 Control unit faulty 18

15 DME relays 19

16 Tank ventilating valve 19

17 Resonance plate 20

18 Check Engine warning lamp 21

19 Injection valves 21

20 Fuel pressure 23

21 Intake system leaks 24

22 Ground and plug connections 24

23 Speed/reference mark sensor 26

24 Ignition and output stage 27

25 Alternator/regulator 30

26 Leads K and L 30

CO and idle speed test 31

Coding of control unit 32

Check-Engine Lamp 33

24/28

Fuel System - Electronic Control

911 Carrera 2 911 Carrera 4

0 0

Post a comment