Group 23 EMS 2 Diagnostic function
42
PPID 8, Code 6.7 Piston cooling pressure
Reason:
Piston cooling pressure is too low.
Reaction:
Engine stopped, applies to both GE and VE en-
gines. The fault code is de-activated at engine
speeds below 1000 rpm.
Remedy:
Check that the oil pressure in the engine exceeds
175 kPa (25.4 psi).
PPID 8, Code 6.8 Piston cooling pressure sensor
Reason:
Shorted to plus (+) or minus (-).
Break.
Reaction:
None.
Remedy:
Check that the piston cooling pressure sensor
contact has been installed correctly.
Check that the cable harness to the piston cooling
pressure sensor has not been damaged.
Check that the piston cooling pressure sensor
was installed correctly.
Check the piston cooling pressure sensor func-
tionality.
Check contact pressure in socket 10 and 14 in
the lower cable glove (B) to the engine control
module.
PID 158, Code 6.9 Battery voltage, CIU
Reason:
Shorted to minus (-).
Faulty alternator
Battery, battery cables faulty.
Reaction:
Warning indicator.
Problem when starting motor.
Remedy:
Check feed voltage from the control module.
Check the battery.
Check alternator.
SID 1, Code 7.1 Unit injector cylinder #1
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 24 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 #1.
Check contact pressure in socket 24 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 #1.

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