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OPM-143/G

SPN

FMI Test Translation

DTC

677

Engine Starter is controlled by two relays actuators one for Low Side and one for High Side. Both power stages are
monitored by Hardware for electric failures.

2A4-6

723

The Engine Position Management module is responsible for signals from camshaft and crankshaft sensor evaluation:
angle and speed determination, signal plausibility and quality are monitored by this module. Plausibility of number and
position of the camshaft edges detected by camshaft speed sensor is monitored here.

2D3-8

977

The post drive control, controls the system state which is activated by switching key15 off. Test and management tasks
are carried out here. Shut off time of CY320 (power stage supplier) is monitored.

3D1-C

1076

A loose contact in the wiring of the metering unit can result in a malfunction of the metering unit and lead to fuel
pressure oscillations (irregular engine running, possible Fuel pressure failures detected). A permanent loosen contact is
detected by the electrical monitoring (SCB,SCG,OL Monitorings), but very short contact loosing (e.g. due to vibration)
are not detected. Therefore this monitoring counts the number “short term loosen contacts” (shorter than debouncing
of electrical failure) in the way, that a counter is incremented by one each time a loosen contact is recognized, and
decremented by 1, if the time between 2 loosen contact recognitions is longer than 3,00s. If the counter reaches or
exceeds 1000,00- a “bad contact” will be recognized.

434-2

1076

The power stage of the fuel metering unit to common rail (MeUn) is monitored electrically for voltage and current by
hardware.
The Power stage of Metering Unit at Low Side is monitored by Hardware for electric failures.

434-5

1076

434-6

1081

The Power stage for the control lamp for Glow Plug activation is controlled by Hardware for electrical failures

439-5

1081

The Power stage for the control lamp for Glow Plug activation is controlled by Hardware for electrical failures

439-6

1127

Boost pressure value is monitored, if actual boost pressure is higher than target boost pressure beside a defined threshold
a failure is detected.

467-10

1127

Pressure Charger Regulatior is monitored for any deviation of actual boost pressure from target pressure. Underboost is
detected if the engine is running within the specified working area and a positive boost pressure deviation is detected.

467-12

1188

The Power stage of Bitron actuator is monitored by Hardware for electric failures.

4A4-5

1188

The Power stage of VGT actuator is monitored by Hardware for electric failures.
The Power stage of Bitron actuator is monitored by Hardware for electric failures.

4A4-6

1209

The turbine upstream pressure is acquired via hardware connected sensor. The raw voltage signal is acquired in the
message Exh_uRawPTrbnUs. This signal is checked for the Signal Range Errors and then transformed into physical value
Exh_pSensPTrbnUs.

4B9-3

1209

4B9-4

1221

Communication between ECM processor and power stage controller over SPI bus is monitored. Error is detected if no
response or an erroneous response is detected by the processor.

4C5-2

1239

The Fuel Rail pressure control is executed with a device: Metering Unit (MeUn) as feeding quantity control and an
overpressure valve allocate in the rail (PRV). The desired fuel flow is adjusted by feed back control for reaching the
desired fuel pressure. If this needed fuel flow exceeds a maximal expected fuel flow by more than a fuel flow dependent
value (15700,00mm3/s at 4500,00mm3/s to 14000,00mm3/s at 14330,00mm3/s), leakage in the system must be
assumed.

4D7-0

1485

“The Main relay is controlled by the ECU itself: After Key 15 off the ECU goes into the “”After-run””, where mainly
following actions are made: - storage of the failures into the memory - counting of driving cycles and the corresponding
reactions (pending --> validated failure, failure declared as long time failure etc.) Therefore the Main Relay is controlled by
the ECU to assure the After-run. The main Relay is switched off by the ECU itself after the After-run has finished. After the
request of “Main Relay switch off” the ECU expects, that the supply voltage drops below limit within 500,00ms. If not, it is
assumed that the main relay is stuck in closed position.

5CD-7

1485

The Main relay is controlled by the ECU itself: After Key 15 off the ECU goes into the “”After-run””, where mainly following
actions are made: - storage of the failures into the memory - counting of driving cycles and the corresponding reactions
(pending --> validated failure, failure declared as long time failure etc.) Therefore the Main Relay is controlled by the ECU
to assure the After-run. The main Relay is switched off by the ECU itself after the After-run has finished. This means, that
all this actions can not be done, if the Main relay switches off before the After-run has finished. Therefore the correct
opening of Main Relay is monitored. At each start a bit in the EEPROM is set, which is reset to 0 at the end of the After-
run immediately before the ECU switches off the Main Relay. At next start the System checks the state of the bit in the
EEPROM: If it is still set, this means that the Main Relay was switched off before the request of the ECU.

5CD-E

2791

The Power stage of electric EGR Valve actuator (H-Bridge) is monitored by Hardware for electric failures.
The Power stage of electric EGR Valve actuator (H-Bridge) is monitored by Hardware for electric failures. The H-Bridge
has 2 switches (High side and Low side). Each circuit is monitored separately.
The Power stage of electric EGR Valve actuator (H-Bridge) is monitored by Hardware for electric failures.

AE7-5