Group 23 EMS 2 Diagnostic function
44
SID 6, Code 7.6 Unit injector cylinder 6#
Reason:
Electric fault.
Compression or unit injector faulty.
Reaction:
The engine runs on 5 cylinders.
Abnormal sound.
Deteriorating performance.
Cylinder balancing interrupted -> Uneven operation
at low rpms and low load.
Remedy:
Check contact pressure in socket 40 in the upper
cable glove (A) to the engine control module.
Check that the cable harness to the unit injectors
has not been damaged.
Check that connections to the unit injector have
not been damaged.
Check fuel feed pressure.
Check the valve clearance.
Run a compression test and check
cylinder #6.
PID 153, Code 7.7 Crankcase ventilation pressure
Reason:
Crankcase ventilation pressure too high.
Reaction:
Warning indicator.
The engine is shut down.
Remedy:
Check whether the crankcase ventilation is
clogged.
Check whether cylinder liner, piston or piston rings
are worn or damaged.
PID 153, Code 7.8 Crankcase ventilation pressure
sensor
Reason:
Shorted to plus (+) or minus (-).
Break.
Reaction:
None.
Remedy:
Check that the crankcase ventilation pressure
sensor contact has been installed correctly.
Check that the cable harness to the crankcase
ventilation pressure sensor has not been dam-
aged.
Check that the crankcase ventilation pressure
sensor was installed correctly.
Check crankcase ventilation pressure sensor
function.
Check contact pressure in socket 28 in the lower
cable glove (B) to the engine control module.
PID 172, Code 7.9 Air temperature sensor, inlet
Reason:
Shorted to plus (+) or minus (-).
Break.
Reaction:
None.
Remedy:
Check that the air temperature sensor contact has
been installed correctly.
Check that the cable harness to the air tempera-
ture sensor has not been damaged.
Check that the air temperature sensor was in-
stalled correctly.
Check the air temperature sensor functionality.
Check contact pressure in socket 29 in the upper
cable glove (A) to the engine control module.

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