Timing ASTON MARTIN V8 VANTAGE 2010 Manual Online

AML EOBD System Operation Summary

Rory O’Curry Aston Martin Lagonda CONFIDENTIAL 1 May 2009
[email protected] AML EOBD Monitors 07 ROC.doc Page 29 of 43

The Intake Manifold Runner Control (IMRC) is a syst em which uses dual intake runners to supply air to
each cylinder. The secondary runners are normally closed, but the PCM opens them under high rpm
conditions when the driver is demanding additiona l power from the engine. The IMRC system can be
actuated using an electric motor or a vacuum moto r. The IMRC system is functionally checked by
monitoring the runner control plates using switches. If the actual position of the runner control plates does
not match the commanded position, a malfunction of the IMRC system is indicated (P1518, P1519).

The Swirl Control Valve (SCV) is a system which uses di fferent regions of the Intake plenum to influence
the pattern of the airflow into the combustion chamber.

It is important to note that this functional / rationality check may or may not be a MIL Code. This is
dependent on whether the EOBD Thresholds are exceeded.

IMRC / SCV System Check Operation:
DTCs P1520 (IMRC input switch electrical check)
P1518, P 1519 (IMRC stuck open functional check)
Monitor execution continuous
Monitor Sequence none
Monitoring Duration 5 seconds

Typical IMRC functional check malfunction thresholds
IMRC plates do not match commanded position (functional)
IMRC switches open/shorted (electrical)


Camshaft Position Control (also known as Variable Cam Ti ming) is a system which is able to advance and
retard camshaft timing relative to the crankshaft. Th is phasing is controlled by a duty-cycled output. The
output driver is checked electrically for opens and s horts (P1380). The system is checked functionally by
monitoring the closed loop phase control correction. If the proper phasing cannot be maintained and the
system has an advance or retard error greater than the malfunction threshold, a CPC control malfunction is
indicated (P1381, P1383).

It is important to note that the functional / rationality checks may or may not be a MIL Code. This is
dependent on whether the EOBD Thresholds are exceeded.

Camshaft Position Control System Check Operation:
DTCs P1380 (CPC output electrical check)
P1381 (CPC timing over-advanced functional check)
P1383 (CPC timing over-retarded functional check)
Monitor execution continuous
Monitor Sequence ECT > 150 oF
Monitoring Duration 5 seconds

Typical CPC functional check malfunction thresholds:
timing over-advanced/over-retard ed by > 10 crankshaft degrees

Engine CCM temporary disablement conditions ( other than entry requirements ) :
None, except CPC does not operate (and is therefore not checked) if ACT/IAT, ECT/CHT, MAF/MAP or
TP sensors are malfunctioning.

Aston Martin V8 Vantage 2009 MY EOBD DocumentationAston Martin/Ford Confidential
Component/ System Fault Code Monitor Strategy
Description Malfunction Criteria Threshold Parameter Secondary Parameters Entry Parameters Time Required DTC
StorageMIL Illumin-
ation
PCM able to determine
failure
Time with failure >5seconds
PCM able to determine
failure
Time with failure >5seconds
P0011 (Bank1) Cam position error vs
target >12.4deg CRK Engine coolant
temperature >-7c (20f)
P0021 (Bank2) Cam position error bank1
vs bank2 >16deg CRK Engine oil temperature >-7c (20f)
<121c (250f)
Time exceeding threshold >5 seconds Cam angle sensitivity
modifier for cam position
bank1 vs bank2 CAM_RANGE_SENS
(See function)
Cam angle error filter for
target error calculation FNCAM_ACT_FK
(See function)
Filter for target error
calculation 0.25*100%
Intake air temp sensor OK
(P0112/0113)
Engine coolant temp
sensor OK (P0117/0118)
Engine oil temp sensor OK
(P0197/0198)
Throttle Position Sensor
OK (P0122/0123)
Crankshaft position circuit
(PIP) OK (P0320)
Mass Air Flow sensor OK
(P0101 to P010F)
Camshaft ID circuit (CMP)
OK (P0340)
P0012
(Bank1) Cam position error vs
target>12.4deg CRK Engine coolant
temperature >-7c (20f)
P0022 (Bank2) Cam position error bank1
vs bank2 >16deg CRK Engine oil temperature >-7c (20f)
<121c (250f)
Time exceeding threshold >5 seconds Cam angle sensitivity
modifier for cam position
bank1 vs bank2 CAM_RANGE_SENS
(See function)
Cam angle error filter for
target error calculation FNCAM_ACT_FK
(See function)
Filter for target error
calculation 0.25*100%
Intake air temp sensor OK
(P0112/0113)
Engine coolant temp
sensor OK (P0117/0118)
Engine oil temp sensor OK
(P0197/0198)
Throttle Position Sensor
OK (P0122/0123)
Crankshaft position circuit
(PIP) OK (P0320)
Mass Air Flow sensor OK
(P0101 to P010F)
Camshaft ID circuit (CMP)
OK (P0340)
P0016
(Bank1) Engine speed
>600rpm
<1100rpm
P0018
(Bank2) Indicated torque
>25 Nm (18.4ftlb)
<95 Nm (70ftlb)
Time after start >25sec
<16383sec
Engine coolant
temperature >71.1degC (160degF)
<104.4degC (220degF)
Filter for position error 1.5
Air charge temperature >-17.7degC (0degF) <65.5degC (150degF)
Circuit MalfunctionVariable Cam Timing MonitorContinuous Footnote a) Footnote c)
VCT actuator
malfunction P0010 (Bank1)
P0020(Bank2)
VCT target error Measured Cam Position Over
advanced
VCT target error Measured Cam Position Over
retarded
Footnote c)
>8deg CRK Once per driving
cycle Footnote a)
Circuit Malfunction
CAM / CRANK
Misalignment Cam position error
Measured Cam Position with
VCT locked fully retarded
6