Saab 9-5

Since 1997 of release

Repair and car operation



Saab 9-5
+ Cars Saab 9-5
+ Controls and operation receptions
+ Options and car routine maintenance
+ The engine
+ Systems of cooling of the engine, heating, ventilation and air conditioning
+ The power supply system and release of the fulfilled gases
+ Systems of an electric equipment of the engine
+ Manual box of a gear change
- Automatic transmission
   The general information
   Search of malfunctions - the general information
   Removal and installation of assemblage of the lever of the selector of modes АТ and its casing
   Removal, installation and adjustment of a cable of the selector of modes АТ
   Removal and installation of the lever of the selector of modes АТ and dismantling of its casing
   Removal and installation э/м valves AT, their case and its cover
   Removal and installation of gauges of speed
   Removal and installation of hydraulic lines АТ
   Removal and installation TCM
   Replacement and adjustment of the gauge of position of the selector of modes АТ
   Removal and installation АТ
   Replacement of epiploons of power shafts
+ Coupling and power shafts
+ Brake system
+ Suspension bracket and steering
+ Body
+ Onboard electric equipment





The general information

The site of identification number АТ and its decoding are described in Section transmission Identification.

On cars considered in the present Management till 2002 were established АТ type AF30, and since 2002 – АТ AF33-5.

Components of management АТ

245 — The Gauge of position of the selector of modes АТ
502 — TCM
506 — The mode Switch «Winter»
532 — The Gauge of speed of a primary shaft
533 — The Gauge of speed of a secondary shaft
535 — The Gauge of temperature ATF
537 — The mode Switch «Sport»
540 — The Combination of devices

541 — SID
632 — the Block of management TWICE
S1-S5 — Э/м switching valves
Transfers 1-5
SLS — (SL) Э/м the valve of pressure of coupling
SLT — (ST) Э/м the pressure valve in system
SLU — Э/м the blocking valve
Trionic — ECM (430/600)

During start of motion АТ acts in a role of ordinary coupling, and during movement performs work on a gear change.

The basic knots АТ are: the converter of a twisting moment (hydrotransformer), a planetary reducer, hydraulic or electronic blocks of management. To transition to other transfer relation in a planetary reducer are applied гидроприводные disk brakes and disk coupling.

The scheme of hydraulic management АТ

The twisting moment converter on the functions corresponds to hydraulic coupling. Its problem includes coupling realisation at a start of motion and a gear change. The hydrotransformer is equipped blocking муфтой, carrying out direct coupling of the engine with АТ:

  • On АТ AF33-5 – on 3-5 transfers (on petrol engines V6 – only on 4 and 5 transfers)
  • On АТ AF30 – on 3 and 4 transfers.

Thus on АТ AF33-5 movement on 3rd transfer with the included blocking instead of 4th transfer without blocking, and on AT AF30 – on 2nd transfer with the included blocking instead of 3rd transfer without blocking is possible. Besides, blocking муфта hydrotransformer AT AF33-5 at slow acceleration can slip, supposing a difference of turns of a cranked shaft and primary shaft АТ within 50 ÷ 200 rpm. It allows to switch off lowering transfer later.

The control system of transmission is a component of a control system of the engine and on the basis of the analysis of the data arriving from various information gauges (not necessarily directly related to functioning actually transmissions), are chosen optimum from the point of view of profitability, smoothness of switchings and other by a mode of functioning АТ. Besides, it is possible to correct work АТ manually, choosing between a sports, winter or normal mode (Controls and operation receptions see the Head). At failure detection in memory of the block of management the corresponding code (Systems of an electric equipment of the engine see) registers.

Unique procedure of service АТ which performance should be made on a regular basis, replacement of its working liquid (ATF) is and check of level ATF, which order of performance is stated in the Head of Adjustment and car routine maintenance.

Near to a radiator of system of cooling of the engine cooler ATF is established.

Thanks to application Д/В of modes «P» / »N» engine start can be carried out only when selector AT lever is in position «Р» or «N» that allows to prevent casual movement of the car at start attempt.

In the present Chapter the general procedures of service АТ lying within qualification of the average mechanic-fan are considered only most.