Perkins 1106D Troubleshooting Manual page 207

SENR9982
Use this procedure if another procedure has directed
you here. Use this procedure if any of the following
diagnostic codes are active:
•
526-05 Turbo Wastegate Drive current low
•
526-06 Turbo Wastegate Drive current high
•
526-07 Turbo Wastegate Drive not responding
properly
Some engine models will have a turbocharger with
an electronically controlled wastegate. Typically, the
wastegate is a mechanical valve that is used in the
turbocharger in order to regulate the intake manifold
pressure to a set value.
The control system for the electronically controlled
wastegate precisely regulates the intake manifold
pressure by using a wastegate solenoid to control
the wastegate.
The required intake manifold pressure is calculated
by the software that is contained in the Electronic
Control Module (ECM). The ECM uses the wastegate
solenoid to control the wastegate in order to provide
the precise value of intake manifold pressure. The
wastegate solenoid is controlled by a PWM signal
from the ECM.
If there is a fault with the wastegate solenoid, one
of the following conditions must be met in order for
these diagnostic codes to be active:
•
The "Turbo Wastegate Solenoid Output" is active.
•
The ECM is controlling boost with the wastegate
solenoid during normal operation.
Note: Attempting to defeat the wastegate could
cause a permanent derate. Factory passwords will
be required to return full power to the engine.
Table 61
Sensor Pin
1
2
Pin Connections
Function
Ground
Signal
Troubleshooting Section
P2 Pin Connection
44
17
207