Ford Falcon. Manual — part 209

303-14-50

Powertrain Control Management

303-14-50

DESCRIPTION AND OPERATION (Continued)

G98133 en

303-14-51

Powertrain Control Management

303-14-51

DESCRIPTION AND OPERATION (Continued)

Flow

Problem

Possible Cause

Possible solution

DTCs

Additional comments

Chart

that may

Output

be set

Number

1

VCT controller not

Throttle pedal is not

Check for correct

at idle mode.

fully closed.

throttle pedal

operation.

Engine RPM is to

Check and rectify

high for entry into

air leaks, throttle

VCT idle mode.

malfunction and

other problems that

allow engine to idle

to be excessively

high.

2

Engine idle rough

OCV is

Remove valve,

P1383

Ref: OCV Cleaning

and/or high RPM

contaminated,

perform cleaning

P1388

Procedure

idle. One camshaft

jammed or faulty.

procedure and

is retarded when the

inspect.

its OCV duty is

PCM VCT output 1 or Check and repair

P1383

Check by

equal to zero.

2 wiring is shorted to wiring/PCM.

P1388

disconnecting both

ground. (This

P0340

OCVs and re-running

problem will power

P1340

‘VCT TEST1 IDLE’ in

up one of the OCVs).

the diagnostic flow

chart.

VCT Phaser is

Remove and

P1383

Most problems can

jammed or faulty.

replace Phaser.

P1388

be attributed to the

OCV, ensure that the

OCV is checked and

cleaned before

replacing Phaser Ref:

Engine Section

303-01a, b & c.

Engine performance Camshaft or CID

Check camshaft

Ref: Engine Section

and/or Idle quality is timing is incorrect or

and engine timing

303-01a, b & c.

poor. Camshaft is

slipped, moved or

including CID

not at ‘Locked

damaged.

timing.

position’ when the

OCV duty cycles are

= 0

G98133 en

303-14-52

Powertrain Control Management

303-14-52

DESCRIPTION AND OPERATION (Continued)

Flow

Problem

Possible Cause

Possible solution

DTCs

Additional comments

Chart

that may

Output

be set

Number

3

Engine stalls or runs

Check for correct

P1383

This will only be a

VCT OCV or CID

poorly when throttle

OCV wiring

P1388

problem if the engine

sensor wiring is

is opened. Engine

orientation.

P1381

wiring has been

connected back the

operates normally

P1386

removed and

front.

for only 10sec after

replaced, or the

start.

history of the vehicle

is not known.

NOTE: Engine may

recover 5sec after

Open circuit/faulty

Check VCT1 and

P1381

throttle is opened

OCV wiring.

VCT2 wiring.

P1386

when the PCM

P0340

Identifies a problem,

P1340

turns VCT off and

One OCV is jammed Remove and clean

P1381

Ref: OCV Cleaning

sets a DTC.

in the fully closed

the OCV that is

P1386

Procedure.

position.

jammed or replace

faulty valve.

Oil supply or filter

Check the oil filter

P1381

Ref: Engine Section

blocked on one

in #1 cam cap.

P1386

303-01a, b & c.

camshaft.
VCT Phaser stuck in

Replace VCT

P1381

This is not a very

locked position i.e.

Phaser.

P1386

common fault ensure

locking pin jammed.

that the oil supply,

Phaser is therefore

OCV, wiring and

unable to move when

PCM are operating

a duty cycle is

correctly before

applied to the OCV.

replacing Phaser.

Ref: Engine Section

303-01a, b & c for

Phaser replacement.

G98133 en

303-14-53

Powertrain Control Management

303-14-53

DESCRIPTION AND OPERATION (Continued)

Flow

Problem

Possible Cause

Possible solution

DTCs

Additional comments

Chart

that may

Output

be set

Number

4

Cam_dc_0_ or

OCV blocked,

Remove OCV,

P1381

Ref: OCV Cleaning

Cam_dc_1 is high,

jammed, worn or

perform cleaning

P1386

Procedure.

cam retard is slow

faulty.

procedure, inspect

or cam error is

and re-install.

large.

Blocked VCT oil

Remove OCVs and

P1381

Ref: Engine Section

filter/s in #1 cam cap, cam caps inspect

P1386

303-01a, b & c.

or blocked oil supply. and clean oil filters,

oil galleries and

OCV. Re-install

and re-test.

Cam_dc_0_ or

OCV worn or faulty.

Check condition of

P1388

Ref: Engine Section

Cam_dc_1_ is low

OCVs

P1383

303-01a, b & c.

But not zero, cam

Phaser return spring

Check condition of

P1388

Ref: Engine Section

error is large and

is broken or faulty.

Phaser return

P1383

303-01a, b & c.

negative.

spring.

Cam friction is high.

Check cam, journal

P1388

Ref: Engine Section

and valve train

P1383

303-01a, b & c.

condition.

When throttle is

A ‘Critical Sensor’

Run KOEO, KOER

P1388

Stop engine, check

opened Both

has failed

and check DTCs

P1383

stored DTCs, and

Cam_dc_ are = 0,

P1381

clear. Re-run flow

Check stored

Failed PCM VCT

i.e. has been VCT is

P1386

chart tests.

DTCs for failed

outputs or wiring, i.e.

disabled

P0340

Check DTCs that

VCT outputs.

OCVs not connected

P1340

indicate that the

or wiring damaged.

P1380

listed ‘critical

Failed CID/Cam

Check CID

P1385

sensors’ have failed.

position sensor or

sensors,

MAP

NOTE: During a test

Wiring

associated wiring,

EOT

if a fault is found the

and stored DTCs

ACT

VCT will be disabled

CHT

VCT control system

Check OCVs,

and the stored DTC

TP

unable to move

associated wiring,

is set.

camshafts to desired and stored DTCs

position.

5

Poor VCT

Oil condition is poor

Change oil and oil

P1388

Ref: Engine Section

performance.

and/or engine oil filter filter.

P1383

303-01a, b & c.

Causing poor

is blocked.

P1381

drivability. Engine

P1386

runs well during

Engine oil pressure is Check oil pressure

P1388

cruise conditions.

low.

is within

P1383

specification.

P1381

P1386

G98133 en