Trionic T5 OBD II

- Power supply +30
- Power supply +15
- Reference ground Ground
- Crankshaft position sensorCrankshaft Position Sensor
- Manifold absolute pressure sensor
- Intake air temperature sensor Air Temperature Sensor ( Ambient / Intake )
- Engine coolant temperature sensor
- Throttle position sensor Throttle Position Sensor
- Oxygen sensor 1 (before catalytic converter) Oxygen Sensor
- Oxygen sensor 2 (after catalytic converter) Oxygen Sensor
- Ignition discharge module
- EVAP canister purge valve Canister Purge Control Valve





- Fuel tank pressure sensor
- Brake light switch
- A/C - ACC Heating and Air Conditioning
- Cruise control
- Speed
- Diagnostic tool communications
- DRIVE position on cars with automatic transmission
- Torque reduction on cars with automatic transmission
- CHECK ENGINE request on cars with automatic transmission
- Low fuel level Description and Operation

Control Module Outputs





- Sensor reference ground Ground
- 5V supply to sensor 5V Supply
- Oxygen sensor 1 preheating Oxygen Sensor
- Oxygen sensor 2 preheating Oxygen Sensor
- Ignition discharge module
- Injectors Fuel Injector
- Boost pressure control valve Turbocharger
- Idle air control valve
- EVAP canister purge valve Canister Purge Control Valve
- EVAP canister close valve Canister Purge Control Valve
- Main relay





- Fuel pump relay
- CHECK ENGINE lamp Trionic T5
- SHIFT-UP lamp Description and Operation
- A/C compressor Compressor HVAC
- Engine speed
- Throttle position Throttle Position Sensor
- Fuel consumption
- Intake manifold pressure
- Diagnostic tool communications
- SID message

Control Module













Saab Trionic controls principally
- ignition (performed by the ignition discharge module)
- fuel injection (sequential)
- boost pressure (via a solenoid valve)

The Trionic control module has a 70-pin connector and is located by the right-hand A-pillar. When removing the powertrain, the control module connector and cable must be extracted through the bulkhead.
The control module contains a 32-bit processor that can perform 2 million calculations per second.
A number of sensors provide the control module with information that is processed using matrices stored in the control module after optimizing the engine operation. Ignition timing, fuel and boost pressure are examples of these matrices.
The control module is programmed specifically for the engine variant in question and must be used only for this engine in the Saab 9-3.
The control module can be damaged by static electricity or short circuits on any of its outputs and great care must be observed when handling the control module during fault diagnosis with the Break Out Box, for example.
The control module is powered continuously with +30 and will lose any adapted values and diagnostic trouble codes stored in its memory if this supply is terminated.
The control module is adapted for a voltage of between 8-16 V when the car is being driven.
When the ignition is turned on, the control module will be activated and the CHECK ENGINE lamp will go on for a functional check. The control module will then await impulses from the crankshaft position sensor.
The principal quantity to be measured for fuel injection is provided by the manifold absolute pressure sensor. Substitute functions are available for all the sensors except the crankshaft position sensor.
After the ignition has been turned off, all the sensors supplied with 5 V will remain active for 15 minutes. Diagnosis can still be performed with the diagnostic tool during this time. After 15 minutes, only the memory will be active. Adapted values are stored in the memory.
Adaptation is essential to performance, driveability, fuel consumption and emissions. Therefore, the control module must never be removed unnecessarily or be de-energized in any other way.

IMPORTANT
The Saab Trionic control module has different part numbers for cars with manual gearbox and automatic transmission respectively.

Diagnosis
- If the control module program memory ROM or working memory RAM is defective, diagnostic trouble code P0605 will be generated.

Control Module Power Supply









+30
The main relay is supplied with +30 from maxifuse 2. Control module pins 1 and 48 are powered from fuse 28. The control module uses +30 for its memory.

Diagnosis
If +30 is absent, the engine will not start and the system cannot be contacted with the diagnostic tool.









+15
Control module pin 60 is supplied with +15 from fuse 17. When +15 is applied to pin 60, the control module will be activated.

Diagnosis
- If +15 is absent, the engine will not start and the system cannot be contacted with the diagnostic tool.