Porsche 944 - Manual (Page 51)

944 Self-diagnosis
03
The knock counter registers 10,000 ignitions before the display
with the actual number of combustion "knocks" appears.
Number
Knocks:
Combustion:
Continue:
xxx
xxxxx
>
Proceed with key >
Knock registration
completed
Return: N
If knock registration is impossible (due to lack of engine-speed
signal), the following display appears:
No knock regist-
ration possible.
RPM signal?
Return: N
Following completion of the knock registration test, return to the
menu with key N.
3.6 Help menu
The "Help" menu can be selected from every display by pressing
key H. Return to the initial display with key N.
Help menu
1 = Illumination
2 = Display stored
3 = Ctrl. unit chart >
Proceed, for instance with key 1:
Key 1:
The scale illumination is switched on and the tester returns to the
previous display.
Or with key 2:
Data display stored
1 = Print
2 = Clear
Proceed with key 1
Stored displays ara printed out (If printer connected).
Proceed with key 2
Stored displays are erased.
With the "Help" menu, for instance
Help menu
1 = Illumination
2 = Display stored
3 = Crtl. unit chart >
If the key > is pressed, a further section of the "Help" menu is
displayed:
< Help menu
1 = Printer setting
2 = Switch of! equip.
3 = Baud Rate
Proceed for instance with key 1
Printer setting
1 = IBM
2 = HP Quiet Jet
3 = EPSON
The selection of the printer results in the tester being set up for
the printer type in question.
3.7 Store measurement displays (Key )
Using key , all displays can be stored manually.
The following displays are stored automatically:
- ECU-Identity
- Installed systems
- All existing errors
When the memory limit is reached, the following instruction
is displayed:
Data display mem.
full !
Return: N
3.8 Show stored measurement displays (Key )
Using the keys < or >, the stored displays for the selected
system can be shown.
The stored displays can be called up by means of the key.
The system selection (LH - EZK - RDK) takes place with the keys
1, 2 or 3.
4. Service and wear parts (BOSCH)
Fig. BOSCH Part No. Designation Comment
1/3
4/1
4/2
4/3
1 687 335 002
1 684 483 152
1 684 485 170
1 680 552 005
1 684 465 193
1 684 465 194
NC- battery
Plug
Socket
Screwed cap
Printer cable
(Standard D25)
Printer cable
(EPSON)
9 pole
4.1 Service parts (Porsche)
Designation Porsche Part No. Special tool No.
Systemtester 9288
Adapter cable
Battery charger
Module (D)
Module (GB/USA)
Module (F)
Module (I)
Module (E)
000.721.928.80
000.721.928.81
000.721.928.82
000.721.928.84
000.721.928.85
000.721.928.86
000.721.928.87
000.721.928.88
9288
9288/1
9288/2
9288/4
9288/5
9288/6
9288/7
9288/8
Operating instructions for System Tester 9288
Printed in Germany - XXIV, 1991
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