Ford Falcon. Manual — part 175

303-04b-10

Fuel Charging and Controls — Turbocharger

303-04b-10

DIAGNOSIS AND TESTING (Continued)

Test Step

Result / Action to Take

A5

INSPECT THE TURBOCHARGER TURBINE VANES FOR

DAMAGE

Remove the exhaust pipe and the dump-pipe from the turbocharger.

Yes

INSTALL a new turbocharger. REFER to

Inspect the turbine vanes for damage.

Removal and Installation - Turbocharger.
SOURCE and rectify the cause of the damage to
the turbine blades.
TEST the system for normal operation.

No

Go to A1

Are there any signs of damage?

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303-04b-11

Fuel Charging and Controls — Turbocharger

303-04b-11

DIAGNOSIS AND TESTING (Continued)

PINPOINT TEST B : BLUE EXHAUST SMOKE WITHOUT EXCESSIVE TURBOCHARGER NOISE

Test Step

Result / Action to Take

B1

CHECK THE TURBOCHARGER OIL RETURN PIPE

Yes

NOTE:

New sealing gaskets should be installed when refitting the oil

Go to Symptom Chart in this section for further

return pipe.

blue smoke diagnostics.

Disconnect the turbocharger oil return tube from the turbocharger and

No

from the engine sump

INSTALL a new turbocharger oil return tube.

Remove the turbocharger oil return tube.

INSTALL a new turbocharger.
REFER to Removal and Installation -

Check the turbocharger oil return tube for a blockage or signs of

Turbocharger.

damage.

TEST the system for normal operation.

Is the turbocharger oil return tube OK?

PINPOINT TEST C : POOR ENGINE PERFORMANCE

Test Step

Result / Action to Take

C1

CHECK THE WASTEGATE ACTUATOR CONTROL

HOSE

Remove the wastegate actuator control hose.

Yes

INSTALL a new wastegate actuator control

Check that the hose has no cracks or holes, and that it is not blocked. hose.

TEST the system for normal operation.

No

Go to C2

Is the hose damaged?

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303-04b-12

Fuel Charging and Controls — Turbocharger

303-04b-12

DIAGNOSIS AND TESTING (Continued)

Test Step

Result / Action to Take

C2

CHECK THE WASTEGATE ACTUATOR DIAPHRAGM

FOR LEAKS

Yes

NOTE:

The wastegate control actuator is factory set and must not be

Go to C3

adjusted or modified. If the wastegate control actuator is not operating
correctly, the complete turbocharger assembly must be replaced.

No

INSTALL a new turbocharger.

Connect one end of the wastegate actuator control hose to the

REFER to Removal and Installation -

wastegate actuator.

Turbocharger

Connect the other end of the wastegate control actuator hose to a

TEST the system for normal operation.

hand pressure pump.

Using the hand pressure pump apply 35-45 kPa to the wastegate
actuator.

Description

Item
1

Wastgate Actuator Rod

2

Wastgate Actuator Control Hose

Does the wastegate actuator rod move and hold its new position
until the pressure is released?

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303-04b-13

Fuel Charging and Controls — Turbocharger

303-04b-13

DIAGNOSIS AND TESTING (Continued)

Test Step

Result / Action to Take

C3

CHECK THE WASTEGATE CONTROL SOLENOID

Yes

NOTE:

The wastegate control solenoid is factory set and must not be

REPLACE the wastegate control solenoid.

adjusted.

REFER to Removal and Installation - Wastegate
Control Solenoid.

NOTE:

If a fault develops in the turbo wastegate control system, a

TEST the solenoid.

standby function is carried out. The wastegate solenoid is forced fully open
(0% duty cycle) allowing minimum mechanical boost to be delivered. If the

No

boost pressure is still higher than desired, torque-limiting by cylinder

Go to C4

cut-out will occur. The appropriate trouble code will be logged in memory
for retrieval during Self Test mode.

Connect a WDS tester to the diagnostic connector.

Check for Diagnostic Trouble Codes at:
- Key-On-Engine-Off (KOEO)
- Key-On-Engine-Running (KOER)
- Engine Running (cont)

DTC

TEST

CONDITION

MODE

P0243

KOEO,

Wastegate Solenoid Circuit

KOER, Cont Malfunction

P1227

Cont

Wastegate Control System

Failed - Wastegate Closed

(Over Pressure)

P1228

Cont

Wastegate Control System

Failed - Wastegate Open

(Under Pressure)

Is the solenoid operation faulty?

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