Testing
SCOPE OF MODULE:Guidance through the menu, communication with the ECU, reading out the error memory and selection of the "Help" menus, actuator diagnosis, circuit inputs and system adaptation, engine-knock detection, sensor and event check for the tire-pressure monitor (RDK).
Reading out the error memory
Connect the System tester 9288.
Switch on the System tester, (possible with every key !)
Display:
PORSCHE
EPROM modul eng
Mod. intro. xx.xx.xx
If a specific instruction does not appear in a display, it is always possible to proceed by pressing the button >.
Due to the fact that the System tester 9288 can store error displays, the following display will appear if errors have been stored in the image memory:
Stored displays erased?
1 = yes
2 = no
Key 3
Display:
Print out displays: H
continue: >
H = Help menu or key 1
Display:
Vehicle types
1 = 944 S
2 = 911 Carrern4
3 = 928 S 4
Selection of the vehicle type with key 1, 2 or 3. After the vehicle type has been selected, the following instruction appears:
Connect adapter
cable to veh. plug.
Ignition "ON".
After completion: >
The following then appears:
Wait for
Data
Break off test: N
After a short pause, the System tester 9288 reports all the systems that are installed in the particular vehicle. If a system is preceded by " ", this means that at least 1 error is stored in that particular system.
Examples:
Installed systems
1 = # LH
2 = # EZK
3 = RDK
The particular system can be selected by means of key 1. 2 or 3. After selection (for instance with key 1), the following display appears:
LH
System: L01 LH-JET
Ser. No.: 92861812313
RB. No.: 0280002507
After pressing the key > , a selection menu is displayed:
Menu
1 = Fault memory
2 = Drive links
3 = Input signals >
< Menu
1 = System adaptation
In the example - press key 1. There then follows the display of the number of errors which are stored (if any).
Number of
faults
---> 2 <---
Proceed with key >
Error Output
Additional info to
every display with
key 1
continue: >
Proceed with key >
Error output:
1: Engine
temperature sensor 2
Short to ground
not present
If key 1 is pressed instead of the > key. the corresponding error code display appears (the last two digits of the flashing code).
Fault code: - 14 -
Proceed with key >
Further errors are displayed (if they exist):
2: Idle contact
Short to ground
present
If key 1 is pressed instead of > key the corresponding error code display appears (the last two digits of the flashing code).
Fault code: - 12 -
After the last displayed error, the following instruction appears:
Repair fault accord-
ing to repair
instructions
Continue: >
Proceed with key >
Fault repaired ?
1 = yes
3 = no
Return to display "No. of errors" with key 3.
Proceed with key 1:
Fault memory
1 = Erase
3 = Do not erase
If key 3 is pressed:
= Return to menu "error memory".
The error memory is not erased !
Proceed with key 1:
Fault memory
has been cleared
Return: N
The test scope "Read-out error memory" is terminated at this point.
Actuator diagnosis
If an actuator is selected. this is triggered by the Electronic Control Unit "ECU" so that it can be checked for correct functioning.
The various actuators components are gone through one after the other and are selected with the key.
Operate the System tester 9288 as described until the following menu display appears:
Menu
1 = Fault memory
2 = Drive links
3 = Input signals
After pressing key 2. the display for the first actuator appears:
Injector
to activate
1 = Start
Continue: >
If key > is pressed. the next actuator is selected.
Pressing key 1 results in the following instruction:
Can injectors be
heard/felt ?
1 = yes
3 = no
Key 1 selects the next actuator (e.g. idle actuator). Following instruction:
Repair fault accord-
ing to repair
instructions
Continue: >
After pressing key >, the following display appears:
Injector
to activate
1 = Start
Continue: >
Proceed with key 1
Can injectors be
heard/felt ?
1 = yes
3 = no
Proceed with key 1 to the next actuator.
Idle stabilizer
to activate
1 = Start
Continue: >
Proceed with key 1
Can idle stabilizer
be heard/felt ?
1 = yes
3 = no
By pressing key 1, the next actuator is selected. After pressing key 3, the next instruction appears:
Repair fault accord-
ing to repair
instructions
Continue: >
Proceed with key >.
Idle stabilizer
to activate
1 = Start
Continue: >
After pressing key 1, the following display appears:
Can idle stabilizer
be heard/felt ?
1 = yes
3 = no
By pressing key 1, the next actuator is selected. The actuators are selected one after the other and triggered until the following display appears:
Drive link test
completed
Return: N
By pressing the key N, the operator is returned to the menu.
Circuit inputs
In addition to the actuators, the System tester 9288 can also check circuit inputs. To this end, operate the System tester 9288 until this menu display appears:
Menu
1 = Fault memory
2 = Drive links
3 = Input signals
Press key 3.
Idle contact
1 = Start
Continue: >
By pressing key the next circuit input is selected.
The next display appears when key 1 is pressed.
Activate accl. pedal
Idle contact
- closed -
Continue: >
Operate the accelerator pedal, the following display appears:
Activate accl. pedal
Idle contact
- open -
Continue: >
The next circuit input is selected by pressing key > Repeat until this display appears:
Input signals
testing completed
Return: N
Press key N for return to menu
System adaptation
When the function "System adaptation" is triggered, the ECU registers the basic air requirement of the engine.
To this end, operate the System tester 9288 until the following menu display appears:
Menu
1 = Fault memory
2 = Drive links
3 = Input signals >
Proceed with key >.
< Menu
1 = System adaptation
Proceed with key 1.
Prerequisite:
Eng. at oper. temp.
with all consumers
and ignition off.
Proceed with key >.
System adaptation
1 = Start
Return: N
If key N is pressed
= return to menu.
If key 1 is pressed:
Start engine !
Following engine start there appears:
System is being
adapted
Please wait!
After approx. 30 secs there appears:
System adaptation
completed
Return: N
If it is impossible to carry out system adaptation (idle contact not closed, or defective), the following display appears:
No system adaptation
possible
Idle contact ?
Return: N
After completion of the system adaptation, return to the menu with key N.
Engine-knock registration
The engine-knock registration function can only be triggered through the EZK or DME control unit.
To this end, operate the System tester 9288 until the following display appears:
Installed systems
1 = # LH
2 = # EZK
3 = RDK
The particular system can be selected by means of key 1, 2 or 3.
For instance with key 2 the following display appears:
EZK
System: EO1EZK
Ser. No.: 92861812415
RB. No.: 0227400154
Proceed with key >
The following menu display appears:
< Menu
1 = Fault memory
2 = Knock registration
Proceed with key 2.
Condition:
Engine at operating
temperature
Proceed with key 2.
< Start knock
registration before
test drive
Proceed with key >
< A normal test
drive is a pre-
requisite
>
Proceed with key >
< Stop the test
drive only if the
display with the no.
of knocks comes on.
Proceed with key >
Knock registration
1 = Start
Return: N
Pressing key 1 activates the engine-knock counter:
Knock registration
in progress
Please wait!
The knock counter registers 10,000 ignitions before the display with the actual number of combustion "knocks" appears.
Number
Knocks: xxx
Combustion: xxxxx
Continue: >
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
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 are 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 = Ctrl. unit chart
if the key is pressed, a further section of the "Help" menu is displayed:
< Help menu
1 = Printer setting
2 = Switch off 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.
Store measurement displays (--->)
Using key (--->) 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
Show stored measurement displays (--->)
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