Saab 9-5

since 1997 of release

Repair and car operation



Saab 9-5
+ Saab 9-5 Cars
+ Governing bodies and operation receptions
+ Settings and routine maintenance of the car
+ Engine
+ Systems of cooling of the engine, heating, ventilation and air conditioning
+ the Power supply system and production of the fulfilled gases
- Systems of electric equipment of the engine
   - Systems of ignition, preheat and engine management
      Main data and security measures
      Search of malfunctions - the general information and preliminary checks
      Removal and ECM installation
      Candles and modules of ignition of petrol engines
      Removal and installation of components of system of preheat of the diesel engine
      Removal and installation of sensors of a control system by the engine
   + Diagnostics of systems of electronic control and diagnostic equipment
   + charge and start Systems
+ Manual box of gear shifting
+ Automatic transmission
+ Coupling and power shafts
+ Brake system
+ Suspension bracket and steering
+ Body
+ Onboard electric equipment





Systems of ignition, preheat and engine management

Main data and security measures

The system of ignition provides ignition submitted to chambers of combustion of cylinders of petrol engines of an air and fuel mix. For formation of a spark of demanded intensity 12-volt tension of an onboard network will be transformed in ignition coils to high-voltage tension (30 000 In).

The electronic system of direct ignition is an integral part of a control system of the engine. Its main working components are candles and ignition modules with the built-in coils. Giving distribution In/in tension on spark plugs the block of electronic control (ECM) operates.

Manual adjustment of the moment of ignition is not made, - at violation of demanded installations it is necessary to make replacement of the failed components.

Elements of management of system of ignition are not subject to wear and regular service do not need. According to the maintenance schedule (see. Head of Control and routine maintenance of the car) it is necessary to make only replacement of spark plugs.

The system of preheat of the diesel engine is intended for warming up of chambers of combustion for the purpose of sure ignition of diesel fuel. As heating elements the glow plugs which work the corresponding electronic block operates are used.

The main data on work and sensors of systems an upravleniyadvigatel and injection of fuel are stated in Head of the Power supply system and production of the fulfilled gases. Work schemes to control systems of engines are provided on illustrations.

Control system of petrol engines (Trionic T7)

Control system of the petrol V6 engine (Trionic T7)

Tech 2 — the Diagnostic scanner
Trionic — the Control unit the engine (ECM)
102 — the Relay of the fuel pump
133 — the Sensor of provision of a pedal
couplings
134 — the Sensor of provision of a pedal
brakes
141 — the Switch темпостата
156 — the To/in compressor Relay
179 (a) — the Control valve of air
pressurization
202 — the Sensor of temperature of OZh (ECT)
205 — the Sensor of an air stream (MAF)
206 — Injectors/nozzle
229 — the Main relay
243 — the Sensor of level impellent
oils
29 — Д/В stoplights
321 — the Valve of a purge of an adsorber
EVAP systems
324 — the SAI system Relay
326 — the SAI system Pump
345 — the Sensor of situation cranked
shaft (CKP)
346 (F/R) — ignition Modules (forward /
back)
379 — the Sensor of provision of a pedal of gas
(APP)
382 — the ABS/TC Control unit

398 — Glow plugs
407 — the Sensor of temperature it is soaked up -
го air (IAT)
408 — the Sensor of turns cranked
shaft
431 — the Sensor of absolute pressure in
inlet pipeline (MAP)
502 — the Control unit transmission
(TCM)
540 — the Display of a combination of devices
540B — the Control unit a combination
devices
547 — the ABS Control unit
555 — the Sensor situation distribute -
telny shaft (CMP) ***
585 — the Sensor of pressure of EVAP system
588 — the Valve of an otsechka of EVAP system
592Fa — the Lambda probe 1 (forward)
592Ra — the Lambda probe 2 (back)
596 — the Control unit preheat
diesel engine
603 — the Sensor of absolute pressure
forced air
604 — the throttle Case
605 — Perepuskna the control valve
606 — Ø/m the EGR system valve
607 — Ø/m the valve of emergency operation
608 — the Control unit the engine
(ECM)

Control system of the diesel V6 engine (Denso ECD U2P)

628 — the Control unit the dashboard (DICE)
632 — the Control unit anticreeping system (TWICE)
640 — the Relay Ý/m the valve of emergency operation
651 — the Sensor of temperature of diesel fuel
652 — the Control valve of pressure of fuel in the distributive highway of the diesel engine

653 — the Sensor of pressure of fuel in the distributive highway of the diesel engine
654 — the Sensor of position of shovels of a turbokompressor
655 — the Control unit the engine (ECM)
656 — the Electric cascade of nozzles
671 — the ESP Control unit

Security measures at work with systems of ignition, preheat and management of fuel injection

For the purpose of prevention of a travmirovaniye and/or failure of components of electric and electronic systems it is necessary to observe the following:

  • Do not touch electroconducting of system of ignition and do not separate its sockets at the working engine / a rotating starter.
  • Make detachment/connection топливопроводов control systems of injection/electroconducting of system of ignition, and also connection/shutdown of any diagnostic and measuring equipment only at the switched-off ignition.
  • Works on service by electronic system of ignition by people with the implanted pacemaker are not allowed.