PRE-RELEASE
(TA232-0338) Air leak testing, intake system, B207
TECHNICAL ADVICE - Quick information for your help | |
Bulletin Nbr: | TA232-0338 |
Date: ........... | July 2003 |
Market: | All |
Air leak testing, intake system, B207 |
VEHICLES CONCERNED |
Saab 9-3 with petrol engine alternative B207 E/L/R, M03-
BACKGROUND |
The car may have certain fault symptoms without a diagnostic trouble code being generated. This can be due to an air leak in the intake system.
The following fault diagnosis covers air leak testing of the intake system . If a diagnostic trouble code arises then relevant fault diagnosis must first be used . The following method is supplementary if the fault cannot be located by normal fault diagnosis .
CONDITIONS |
The car may have one or more of the following symptoms:
• |
Poor driveability
|
• |
Reduced performance
|
• |
Engine has uneven/low idling speed
|
• |
Surge or hesitation upon acceleration
|
Tools and Materials
83 95 659 Plug set with pressure regulator83 94 595 Plug
83 93 514 Measuring equipment for charge pressure
30 07 739 Pliers for hose clip
M12 bolt or equivalent plug for the crankcase ventilation hose
Leakage (detection) spray or soap solution
Tech 2
ACTION |
1. |
Copy the Checklist in this document in 2 copies. Enter the values
from Tech 2 into one of the copies before any action is taken.
|
2. |
Remove the upper engine cover in order to uncover the intake system
and the throttle.
|
3. |
Connect the measuring equipment for charge pressure 83 93 514
via a T-pipe to the hose between the fuel pressure regulator and the intake
manifold.
|
5. |
Replace the existing plug in kit 83 95 659 with plug 83 94 595.
If necessary a new hose clamp must be used in order to keep the hose tight
on plug 8394595.
|
6. |
Undo the intake hose by the air filter can. Fit plug 83 94 595
in the hose and then connect the pressure regulator to an external compressed
air outlet.
Caution Close the pressure regulator before connecting it to the air pressure outlet. |
7. |
Pressurise the intake system by carefully turning the pressure
regulator until the maximum 0.6 bar overpressure is reached. Read the pressure
on charge pressure meter 83 93 514.
|
9. |
Remove plug 83 94 595 from the intake hose. Connect the hose to
the air filter can.
|
10. |
Remove the plug from the crankcase ventilation hose. Connect the
hose to the camshaft cover.
|
11. |
Remove the charge pressure meter. Connect the hose to the fuel
pressure regulator.
|
12. |
Fit the upper engine cover.
|
13. |
Read out the control module software version (Software Module
Identifier #1) in Tech 2. If there is a later software version in TIS2000
then this must be programmed into the control module.
NOTE: If new software is not programmed into the control module then the fuel adaptation must be reset to zero before step 12 is carried out. |
14. |
Perform the fuel adaptation and check it using Tech 2 as follows:
|
14.A. |
Switch off the A/C or ACC
|
14.B. |
The engine temperature must exceed 80°C and the engine must
have been running for at least 3.5 minutes in order that fuel adaptation can
be performed.
|
14.C. |
Drive on a level road within the engine speed range 1500 - 2750
rpm in 5th, or 4th gear, preferably with the accelerator pedal completely
still for approx . 3 minutes.
|
14.D. |
Stop the car and allow the engine to run at idling speed for approx
. 3 minutes.
|
14.E. |
Read "Multiplicative adaptation " on Tech 2.
|
14.F. |
Read off "Additive adaptation" on Tech 2.
If the adaptations did not change from 0, switch off and start the engine again and repeat step 14c - 14f. |
15. |
Fill out the second copy of the checklist.
|
16. |
Disconnect Tech 2
|
17. |
If the problems have not been solved, contact the importer's technical
support. Have the checklists that were filled out ready.
|
Checklist |
1 | Describe the fault symptom ...................................................................... ...................................................................... ...................................................................... | ||||||||||
2 | Connect Tech 2. | ||||||||||
3 |
Switch off the A/C or ACC and let the engine idle. Coolant temperature
must be over 80°C
|
||||||||||
4 | Read and note any diagnostic trouble codes: ...................................................................... ...................................................................... | ||||||||||
5 | Select "Engine" - "Engine management system" - "Read values" in Tech 2. Read and note the following values: | ||||||||||
Unit | Ignition On | Idle | Desired value | ||||||||
Engine speed | rpm | ............ | 650 - 900 | ||||||||
Air mass/Combustion | mg/c | ............ | 70 - 150 | ||||||||
Requested air mass/combustion | mg/c | ............ | 70 - 150 | ||||||||
Coolant temperature | °C | 80 - 100 | |||||||||
Intake air temperature | °C | 20 - 60 | |||||||||
Atmospheric absolute pressure | kPa | 90 - 115 | |||||||||
Charge air absolute pressure | kPa | 90 - 115 | |||||||||
Intake manifold absolute pressure | kPa | 25 - 60 | |||||||||
Additive adaptation | mg/c | ± 1.5 | |||||||||
Multiplicative adaptation | % | ± 10 |
Number of knockings | Number of misfires | |
Cylinder 1 | ||
Cylinder 2 | ||
Cylinder 3 | ||
Cylinder 4 |
Under "All" - "ECU Information / System information" - "ECM" there is information on Vehicle Identification Number and software version for Trionic 8.
Chassis number (compulsory) | |
Software Module Identifier #1 or Software Version (compulsory) | |
Programming date (compulsory) |