92 KENR6933
Troubleshooting Section
Possible Performance E ffect:
The performance will not be affected unless both
speed signals are lost. The loss of the signals from
both speed/ti
ming sensors will cause the ECM to shut
down the engine. The engine will not restart if the
signal from the secondary speed/timing sensor is lost.
Troubleshooting:
Perform the fo
llowing diagnostic procedure: “Engine
Speed/Timing Sensor Circuit - Test”
Results:
•
OK – STOP.
i02527043
CID 0526 FMI 05
Conditions W
hich Generate This Code:
The Electronic Control Module (ECM) detects the
following co
nditions:
•
A low current condition in the output from the ECM
to the soleno
id for the wastegate regulator
•
No 0168 diagnostic codes are active.
System Response:
The ECM will
log the diagnostic code. If equipped,
the warning lamp will turn on once the diagnostic
code has been active for 30 seconds. After the derate
has been act
ivated, the electronic service tool will
indicate “Turbo Protection Derate Active”.
Possible Pe
rformance Effect:
The engine will be derated while this diagnostic code
is active.
Troubleshooting:
This diagnostic code indicates a fault in the circuit for
the solenoid in the wastegate regulator that is most
likely to b
e an open circuit.
Perform the following diagnostic procedure:
“Wastegat
e Solenoid - Test”
Results:
•
OK – STOP.
i02527044
CID 0526 FMI 06
Conditions Which Generate This Code:
The Electronic Control Module (ECM) detects the
following conditions:
•
A high current condition in the output from the ECM
to the solenoid in the wastegate regulator
•
No 0168 diagnostic codes are active.
System Respon
se:
The ECM will log the diagnostic code. If equipped,
the warning la
mp will turn on once the diagnostic
code has been active for 30 seconds. After the derate
has been activated, the electronic service tool will
indicate “Tu
rbo Protection Derate Active”.
Possible Performance Effect:
The engine will be derated while this diagnostic code
is active.
Troubleshooting:
This diagnos
tic code indicates a fault in the circuit for
the solenoid in the wastegate regulator. This problem
is most likely to be caused by a high side short to
ground or a l
ow side short to power.
Perform the following diagnostic procedure:
“Wastegate
Solenoid - Test”
Results:
•
OK – STOP.
i02752060
CID 0526 FMI 07
Conditions Which Generate This Code:
This diagnostic code indicates that the intake
manifold pressure is not being controlled correctly.
The Electronic Control Module (ECM) will detect the
following conditions:
•
The ECM has been powered for more than 4
seconds.
•
Diagnostic code 0168-01 is not active.
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