ECU ASTON MARTIN V8 VANTAGE 2010 Workshop Manual

AML EOBD System Operation Summary

Rory O’Curry Aston Martin Lagonda CONFIDENTIAL 1 May 2009
[email protected] AML EOBD Monitors 07 ROC.doc Page 35 of 43
Inspection Maintenance Readiness Code


I/M readiness information indicates whether a full diagnos tic check has been completed, i.e. the minimum
number of driving cycles necessary for MIL illumination has been completed since computer memory was
last cleared. Information available to the test equi pment or diagnostic tool includes all the non-continuous
monitors. Misfire, Fuel System and CCM monitors are assumed to complete if all the non-continues
monitors have completed.

A P1000 DTC is stored after an OBD reset is performed, until the I/M readiness check is complete.



Tamper Protection


The AML EOBD System shall meet ISO DIS 15031-7 / SAE J2186 - Diagnostic Data Link Security
requirements, to write-protect any re-programmable co mputer code. Additional data will be stored in the
PCM Vehicle Identification Block to enable retrieva l of VIN (although VIN may not be in the VID block
for all vehicles), CALID (CALibration ID identifi es the specific calibration) and CVN (Calibration
Verification Number, similar to an encrypted check sum). CALID and CVN will be tracked for all initial
releases, running changes and field fixes.

To achieve this data retrieva l J1979 Mode 09 will be implemented for VIN, CALD and CVN.



Serial Data Link Connector

The connection between the vehicle and the diagnostic tester shall comply with ISO DIS 15031-3 / SAE
J1962. Whereby the connector will be located in the passenger compartment in the area bounded by the
driver's end of the instrument panel to 300mm beyond the vehicle center line, attached to the instrument
panel and accessible from the driver's seat, and permit one handed / blind insertion of the mating
connector.



Serial Data Link Communication Protocol

The Communication Protocol used by the AML EOBD system will conform to ISO DIS 15031-4 / SAE
J1850, Class B Data Communication Network In terface (41.6kbps) / ISO DIS 15765-4 Diagnostics on
Controller Area Network (CAN).

Basic diagnostic data and bi-directional control inform ation will be provided using the format and units as
described in ISO DIS 15031-5 / SAE J1979 and will be av ailable to Test equipment and diagnostics tools
meeting the requirements of ISO DIS 15031-4 / SAE J1850.

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
off/on <0.524 Intake air temp sensor OK (P0112/0113) Continuous during
SAIR operation
on/off <0.671 Engine coolant temp sensor OK (P0117/0118)
Mass Air Flow sensor OK
(P0101 to P010F)
First switch correction <
threshold * corrected SAIR
flow <1+(0.246*Long term
fuel trim)
Time in closed loop
fuelling control (only used
for bank to bank flow
arbitration) >10seconds
off/on <0.524 Intake air temp sensor OK (P0112/0113)
on/off <0.671 Engine coolant temp sensor OK (P0117/0118)
Mass Air Flow sensor OK
(P0101 to P010F)
Closed loop bank1 vs bank2
lambda difference Lambda difference>
threshold AND bank1
lambda > bank2 lambdalambda
difference>0.435
Not in HEGO FMEM
First switch correction <
threshold * corrected SAIR
flow <1+(0.246*Long term
fuel trim)
Time in closed loop
fuelling control (only used
for bank to bank flow
arbitration) >10seconds
off/on <0.524 Intake air temp sensor OK (P0112/0113)
on/off <0.671 Engine coolant temp sensor OK (P0117/0118)
Mass Air Flow sensor OK
(P0101 to P010F)
Closed loop bank1 vs bank2
lambda difference Lambda difference>
threshold AND bank1
lambda < bank2 lambdalambda
difference>0.435
HEGO monitor complete
P2448 (Low
flow Bank1)
P2449
(Low flow
Bank2) SAIR off time before re-
enable (if SAIR is disabled
due to engine conditions)>3seconds
Time in closed loop
fuelling control (only used
for bank to bank flow
arbitration) >10seconds
HEGO monitor complete
SAIR circuit ecu
output high/low P0412 Circuit malfunction
PCM able to determine
failure Time with fault>5
seconds
SAIR circuit relay
high output P2257 Circuit malfunction
PCM able to determine
failure Time with fault>5
seconds
SAIR circuit relay low
output P2258 Circuit malfunction
PCM able to determine
failure Time with fault>5
seconds
Ratio of SAIR flow
difference at SAIR pump
off / on and on/off
transition
Modelled pump flow higher
than measured flow via HFM
Ratio of SAIR flow
difference at SAIR pump
off / on and on/off
transition
Ratio of SAIR flow
difference at SAIR pump
off / on and on/off
transition
>2secondsFootnote c)
Approximately 500
sec during
appropriate FTP74
conditions to
complete HEGO
monitorSecondary Air Monitor
Modelled pump flow higher
than measured flow via HFM Ratio of SAIR flow
difference at SAIR pump
off / on transitionoff/on >1.44
Outlet Hose
Disconnection Footnote l)
Continuous
(circuit checks)
Outlet Hose
Blockage
P0492
(Low flow
Bank2)
P0410
(Inlet hose
disconnection)
Secondary Air
System Insufficient
Flow
Closed loop bank1 lambda
correction at first switch AND
low measured flow via HFM
Closed loop bank2 lambda
correction at first switch AND
low measured flow via HFM
P0491
(Low flow
Bank1)
Time with SAIR active
4

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
Sensor input < 0.2 volts 132.8degC
(271.1degF) or
> 4.9 volts
-41.2degC(-42.1degF)
Time with sensor input out
of range > 5.0 sec
Sensor input < 0.2 volts 132.8degC
(271.1degF)
Time with sensor input out
of range > 5.0 sec
Sensor input > 4.9 volts
-41.2degC(-42.1degF)
Time with sensor input out
of range > 5.0 sec
Engine off time >360minutes
ECU power up timer >0.1seconds
Sensor input stuck 103 +/- 59 kPa
Large control error > +/-103 kPa (> 15 psig)
Time with sensor input out
of range > 8.0 sec
(Demand - sensed) error
too large > 137 kPa
(20 psig)Demand pressure within
limits < 413 kPa or > 344 kPa
(< 60 psig or > 50 psig)
Time with sensor input out
of range > 8 sec
Fuel level above minimum
level > 0.15 * 100 %
Sensor input < 0.95 volts 174.23kPa
(25.33psig)
Time with sensor input out > 8 sec
Sensor input > 4.88 volts 647kPa
(93.95psig)
Time with sensor input out > 8 sec
P1233 Fuel pump driver module Time with failure > 5.0 seconds
P1235 Fuel pump control out of Time with failure > 5.0 seconds
P1237 Fuel pump circuit malfunction Time with failure > 5.0 seconds 1 = malfunction Battery voltage> 11.0 volts
Engine coolant temp < 116 deg C (< 240 deg F)
Intake air temp <66 deg C
(< 150 deg F)
Engine rpm (Used to
determine crank mode) > FN384 rpm
(See Function)None
Number of CKP edges
incorrect, missing tooth in
unexpected location. SW
loses synchronization with
missing tooth location None
Increment fault counter by
10 on each event. Set
code when counter
exceeds 100
Engine Speed >550rpm
<5000rpm
Increment fault counter by
2 on each event. Set code
when counter exceeds 50 N/A
Engine speed >550 rpm
<2200rpm
Increment fault counter by
2 on each event. Set code
when counter exceeds 50 N/A
Engine speed >550 rpm
<2200rpm Footnote a) Footnote c)
Continuous
<> +/-12.3degC
(54.1degF) Once per driving
cycle
Fuel Temperature
Sensor Input
ECT-Fuel rail temperature
Circuit Malfunction - range
check
Circuit Malfunction - range
check
Circuit Malfunction - range
check
P0180
P0182 (Low)
P0181 Rationality check
P0183 (High)
Ignition System- CKP
Circuit Malfunction P0320 Intermittent/Noisy CKP signal
check Footnote c)
Footnote c)
Ratio of PIP events to CID
events Continuous Footnote a) Footnote c)
n to 1 (To pass test)
n to 1 (To pass test)
Increment fault counter
by 1 on each event.
Set code when counter
exceeds 40
(> 8 sec @ 600rpm)
Smart power driver status
P0340 (BankA)
P0345 (BankB) Circuit continuity check, open
or shorted
P0201
P0202 P0203
P0203 P0204
P0205 P0206
P0207 P0208
Camshaft Position
Input Rationality check
Rationality checkRatio of PIP events to CID
events Continuous
Footnote a)
Footnote c)
Continuous Footnote a) Footnote c) Footnote a)
Battery Voltage 11< Voltage <18
11< Voltage <18 Continuous Footnote a) Footnote c)
11< Voltage <18
Circuit malfunction
Battery Voltage
Battery Voltage
Range check
Continuous Footnote a)
Fuel Injectors
Fuel Rail Pressure
Input
P0190
P0191
P0192 (Low)
P0193 (High)
Fuel Pump Range check
Range/Performance check
11

2009 MY OBD-II Documentation4.7L, Aston Martin V8 VantageAston Martin / Ford Confidential
1) "Continuous" under the "Time Required" column indicates that the specified test cycles at a frequency greater than once every 0.5 seconds whenever the
test entry conditions are met.
2) "Once per driving cycle" under the "Time Required" column indicates that the specified test will complete during the first 2 bags of an FTP as well as under
the test entr
y conditions specified, on the road.
3)All test entry condition parameters are measured instantaneously unless otherwise indicated.
p) If a 6 hour soak is met, some strategies will not require another continuous 6 hour soak if the customer performs a brief key-off. This has been put into
effect to improve evap monitor completion frequency.
q) Some strategies will have the ability to base evap monitor soak length on the CARB cold soak criteria which consists of an ECT range and ACT/ECT
differential.
r) A minimum soak time has been added to CARB's cold soak criteria (footnote q) to allow calibrators to set a minimum soak time if longer soak times are
n
eeded than given by the ACT/ECT-based CARB soak criteria.
a) A pending code will be stored after a malfunction has been detected on one driving cycle; a DTC will be stored after the same malfunction has been detected on the second consecutive driving cycle. The DTC will be erased after 40 warm-up cycles with no malfunction present, after the MIL has been
extinguished for the DTC.b) A DTC will be stored immediately upon detection of a malfunction. The DTC will be erased after 40 warm-up cycles with no malfunction present, after the MIL has been extinguished for the DTC.k) A DTC will be stored after a malfunction has been detected on one drive cycle.The DTC will be erased after 40 warm-up cycles with no malfunction present, after the MIL has been extinguished for that DTC.l) A DTC will be stored after a malfunction has been detected on six consecutive drive cycles. The DTC will be erased after 40 warm-up cycles with no malfunction present, after the MIL has been extinguished for that DTC.o)For intake air temperatures below 20 deg F, no DTC will set for indicated AIR malfunction.
s) A DTC will be stored after an evaporative system leak has been detected and the refueling debounce check has been completed on the subsequent
driving cycle
c)The MIL will be illuminated after a malfunction has been detected on two consecutive driving cycles.
The MIL will be extinguished after three consecutive driving cycles where the monitor was run without a malfunction.d)The MIL will blink immediately upon detection of a misfire rate that exceeds the catalyst damage threshold, regardless of whether fuel is shut off or not.
If the misfire rate drops below the catalyst damage threshold, the MIL will stay on solidly.
The MIL will be extinguished after three consecutive drive cycles where similar conditions have been seen without the malfunction.e)The MIL will be illuminated after a malfunction has been detected on two consecutive driving cycles.
The MIL will be extinguished after three consecutive drive cycles where similar conditions have been seen without the malfunction.f)For intake air temperatures below 32 deg F, the MIL will not illuminate for the indicated EGR DTCs.
For barometric pressures below 22.5"Hg, the MIL will not illuminate for the indicated EGR DTCs.
For intake air temperatures below 20 deg F, the MIL will not illuminate for the indicated AIR DTCs.
This prevents false MIL illumination due to ice in the EGR hoses or AIR switching valve(s).g)This monitor employs EWMA.
The MIL will be illuminated after a malfunction has been detected on two consecutive driving cycles after DTCs have been erased or Keep Alive Memory
h
as been erased (battery disconnect).
The MIL will be illuminated after a malfunction has been detected on up to six consecutive driving cycles during subsequent, "normal" customer driving.
The MIL will be extinguished after up to six consecutive driving cycles without a malfunction.
h) Some automatic transmission monitors are demonstrated following the USCAR Abbreviated On-Board Diagnostic Test Procedure for Vehicles Equipped
wi
th Automatic Transmissions.
This prevents false MIL illumination on this non-turbine speed sensor transmission application.
i)The MIL will be illuminated after a malfunction has been detected on the first driving cycle.
The MIL will be extinguished after three consecutive driving cycles where the monitor was run without a malfunction.j)A DTC will be set after a malfunction has been detected on two consecutive driving cycles.
m) MIL will be illuminated after a malfunction has been detected on two consecutive driving cycles. MIL will be extinguished after the monitor has run
wi
thout a malfunction (same or subsequent drive cycle).
n) A check cap light will be illuminated after a malfunction has been detected on one driving cycle. The check cap light will be extinguished after the monitor
h
as run without a malfunction (same or subsequent drive cycle).
MIL Illumination:
Notes:
Footnotes
Secondary Parameters
DTC Stora
ge:
EOBD 2009MY_V8 Vantage.xls
Notes 08/02/2005
15

Aston Martin V8 Vantage2009MY OBDII Documentation 4.7L Aston Martin Confidential
Component P CodesMalfunction Strategy
Description Malfunction Criteria
(Fault) Fault condition
(Internal labels) Threshold Value
(Fault condition) Entry conditions Entry conditions values Filter Time to
log DTCClutch position sensor P173B S1/ S2 wire short
circuit to battery or open circuit Clutch position sensor -
Secondary Circuit high The asic UH05 inside the TCU
detects the fault and communicate it to the uP
Output Voltage > th_high th_high = 4,5V (Key ON) AND NOT
(cranking) AND
VSupply inside prope
r
range VSupply range = 7V-24.5V 50ms
Clutch position sensor P0805 Short circuit between
P1 and P2 or short
circuit between S1 and S2 Clutch position sensor - Primary
Secondary short circuit The clutch position signal is a fixed
value (around 2.5 V)
See annexed Chart 2 th_1= 5 km/h
th_2= 2000 bit
timeout_1=100ms timeout_2=50ms (Key ON) AND NOT
(cranking) AND
VSupply inside proper
range VSupply range = 7V-24.5V 50ms
Hydraulic
pressure sensor P0935 Hydraulic pressure
sensor short to GND or open circuit Hydraulic pressure signal circuit
high Output Voltage < th_low th_low = 0,39V (Key ON) AND NOT
(cranking) AND
VSupply inside proper VSupply range = 7V-24.5V 500ms
Hydraulic
pressure sensor P0934 Hydraulic pressure
sensor short to battery Hydraulic pressure signal circuit
low Output Voltage > th_high th_high = 4,79V (Key ON) AND NOT
(cranking) AND
VSupply inside proper VSupply range = 7V-24.5V 500ms
Hydraulic
pressure sensor P0932 Internal Sensor
Damage or open
circuit on the ground sensor wire Hydraulic pressure signal wrong
value Wrong constant pressure value
detected through a correlation
between the pressure variation and an estimation of the oil flow (Key ON) AND NOT
(cranking) AND
VSupply inside proper
range VSupply range = 7V-24.5V 500ms
Kl.30 Power Supply P1794 Open circuit or broken
fuse on TCU supply Kl.30 Power Supply open circuit Power Supply < V_th
V_th = 3V (Key ON) AND NOT
(cranking) 500ms
External sensors power supply or sensor ground P0641 Failure of the sensor
power voltage supply External sensors power supply
or sensor ground open circuit or short circuit V_Sensor_Supply inside proper
range V_Sensor_Supply range
= 4V-5V (Key ON) AND NOT
(cranking) AND
VSupply inside proper
range VSupply range = 7V-24.5V 2500ms
Engine speed from CAN U0401 Internal Problem on
Engine Control System Engine ECU: Engine speed fro
m
CAN. Signal not valid
CAN engine sp = inv_th inv_th = FFFFh NOT (Cranking) AND
(ECU ON since t_on)t_on = 200 ms 1000ms
Engine speed from CAN U1900 Internal Problem on
Engine Control System Engine ECU: Engine speed fro
m
CAN. Signal absent (wrong zero
rpm signal) (CAN engine sp = 0) AND (Engine
ON) Engine ON 1000ms
Engine speed from CAN U1920 Internal Problem on
Engine Control System Engine ECU: Engine speed fro
m
CAN. Signal wrong
(CAN engine speed different form
Clutch speed) AND (CAN engine
speed different from Driveline speed x gear ratio) Seed tollerance=
500rpm (Engine ON) AND
(clutch closed) AND (gear engaged) 1000ms
ASM OBD
228/04/2008

Aston Martin V8 Vantage2009MY OBDII Documentation 4.7L Aston Martin Confidential
Component P CodesMalfunction Strategy
Description Malfunction Criteria
(Fault) Fault condition
(Internal labels) Threshold Value
(Fault condition) Entry conditions Entry conditions values Filter Time to
log DTCClutch speed P0717 Sensor not properly installed on the
gearbox or damaged. Clutch speed. Signal absent
(wrong zero rpm signal) (Clutch speed = 0) AND [(Clutch
closed) OR (Driveline speed > Th) AND (Gear engaged))] Th= 50 rpm (Key ON) AND NOT
(cranking) AND
VSupply inside prope
r
range VSupply range = 7V-24.5V 1000ms
Clutch speed P0716 Sensor not properly installed on the
gearbox or damaged. Clutch speed. Signal wrong (Clutch speed different form Engine
speed) AND (Clutch speed different from driveline speed x gear ratio) Seed tollerance=
500rpm (Key ON) AND NOT
(cranking) AND
VSupply inside proper
range VSupply range = 7V-24.5V 1000ms
Driveline speed U2005 Internal Problem on ESP systemESP: Driveline speed. Signal
absent (wrong zero rpm signal) (Driveline speed = 0) AND [((Clutch
closed) AND (Gear engaged)) OR (( Clutch speed > Th) AND (Gear engaged))] Th= 1300 rpm (Key ON) AND NOT
(cranking) AND
VSupply inside proper
range VSupply range = 7V-24.5V 5000ms
Driveline speed U2511 Internal Problem on ESP systemESP: Driveline speed. Signal
wrong (Driveline speed different from
Engine speed/gear ratio) AND
(Driveline speed different from clutch speed/gear ratio) Seed tollerance=
500rpm (Key ON) AND NOT
(cranking) AND
VSupply inside proper
range VSupply range = 7V-24.5V 5000ms
Driveline speed U0415 Internal Problem on ESP systemESP: Driveline speed. Signal no
t
valid Rear wheels sp = inv_th
inv_th = FFFFh (Key ON) AND NOT
(cranking) AND
VSupply inside prope
r VSupply range = 7V-24.5V 5000ms
CAN Engine ECU communication U0100 Disconnection from
CAN line of engine CAN Timeout Engine ECU CAN engine frames not received
within timeouttimeout = 500ms NOT (Cranking) AND
(ECU ON since t_on) t_on = 200 ms
CAN ESP
communication U0129 Disconnection from
CAN line of ESP CAN Timeout ESP CAN ESP frames not received within
timeouttimeout = 500ms NOT (Cranking) AND
(ECU ON since t_on) t_on = 200 ms
Odd gear
electrovalve P0920 Odd gear electrovalve
disconnected Odd gear electrovalve. Open
circuit The asic UH04 inside the TCU
detects the fault and communicate it to the uP
Driver output voltage > th1 and < th2 during valve off phase th1= 2.2V
th2= 3.2V
NOT (Cranking)
200ms
Odd gear
electrovalve P0923 Odd gear electrovalve
connected to battery Odd gear electrovalve. Short
circuit to Vsupply The asic UH04 inside the TCU
detects the fault and communicate it to the uP
Driver output voltage > th2 during valve off phase th2= 3.2V
NOT (Cranking) 200ms
ASM OBD 328/04/2008

Aston Martin V12 Family
2009 MY V12 Family EOBDincl. V12 Vantage
Aston Martin/Ford Confidential
Notes:
1) "Continuous" under the "Time Required" column indicates that the specified test cycles at a frequency greater than once every 0.5
seconds whenever the test entr
y conditions are met.
2) "Once per driving cycle" under the "Time Required" column indicates that the specified test will complete during the first 2 bags of an
FTP as well as under the test entry conditions s
pecified
, on the road.
3
)All test entr
y condition
parameters are measured instantaneousl
y unless otherwise indicated.
Footnotes:Secondar
y Parameters:
p) If a 6 hour soak is met, some strategies will not require another continuous 6 hour soak if the customer performs a brief key-off. This
has been put into effect to im
prove eva
p monitor com
pletion fre
quenc
y.
q) Some strategies will have the ability to base evap monitor soak length on the CARB cold soak criteria which consists of an ECT range
and ACT/ECT differential.
r) A minimum soak time has been added to CARB's cold soak criteria (footnote q) to allow calibrators to set a minimum soak time if
lon
ger soak times are needed than
given b
y the ACT/ECT-based CARB soak criteria.
DTC Stora
ge:
a) A pending code will be stored after a malfunction has been detected on one driving cycle; a DTC will be stored after the same
malfunction has been detected on the second consecutive drivin
g cycle. The DTC will be erased after 40 warm-u
p cycles with no ma
b) A DTC will be stored immediately upon detection of a malfunction. The DTC will be erased after 40 warm-up cycles with no malfunction
present
, after the MIL has been extin
guished for the DTC.
k) A DTC will be stored after a malfunction has been detected on one drive cycle.The DTC will be erased after 40 warm-up cycles with no
malfunction
present
, after the MIL has been extin
guished for that DTC.
l) A DTC will be stored after a malfunction has been detected on six consecutive drive cycles. The DTC will be erased after 40 warm-up
c
ycles with no malfunction
present
, after the MIL has been extin
guished for that DTC.
o
)For intake air tem
peratures below 20 de
g F, no DTC will set for indicated AIR malfunction.
s) A pending code will be stored after a malfunction has been detected on upto the 6th trip depending on the size of the fault deviation; a
DTC will be stored after the same malfunction has been detected on a second driving cycle. The DTC will be erased after 40 warm-up
cycles with no malfunction. This monitor employs EVMA.
MIL Illumination:c)The MIL will be illuminated after a malfunction has been detected on two consecutive drivin
g cycles.
The MIL will be extin
guished after three consecutive drivin
g cycles where the monitor was run without a malfunction.
d) The MIL will blink immediately upon detection of a misfire rate that exceeds the catalyst damage threshold, regardless of whether fuel
is shut off or not.
If the misfire rate dro
ps below the catal
yst dama
ge threshold
, the MIL will sta
y on solidl
y.
The MIL will be extin
guished after three consecutive drive c
ycles where similar conditions have been seen without the malfunction.
e
)The MIL will be illuminated after a malfunction has been detected on two consecutive drivin
g cycles.
19

Aston Martin V12 Family
2009 MY V12 Family EOBDincl. V12 Vantage
Aston Martin/Ford Confidential
The MIL will be extin
guished after three consecutive drive c
ycles where similar conditions have been seen without the malfunction.
f
)For intake air tem
peratures below 32 de
g F, the MIL will not illuminate for the indicated EGR DTCs.
For intake air tem
peratures below 20 de
g F, the MIL will not illuminate for the indicated AIR DTCs.
This
prevents false MIL illumination due to ice in the EGR hoses or AIR switchin
g valve
(s).
g)
This monitor em
ploys EWMA.
The MIL will be illuminated after a malfunction has been detected on two consecutive driving cycles after DTCs have been erased or
Kee
p Alive Memor
y has been erased
(batter
y disconnect
).
The MIL will be illuminated after a malfunction has been detected on up to six consecutive driving cycles during subsequent, "normal"
customer drivin
g.
The MIL will be extin
guished after u
p to six consecutive drivin
g cycles without a malfunction.
h) Some automatic transmission monitors are demonstrated following the USCAR Abbreviated On-Board Diagnostic Test Procedure for
Vehicles E
quipp
ed with Automatic Transmissions.
This
prevents false MIL illumination on this non-turbine s
peed sensor transmission a
pp
lication.
i
)The MIL will be illuminated after a malfunction has been detected on the first drivin
g cycle.
The MIL will be extin
guished after three consecutive drivin
g cycles where the monitor was run without a malfunction.
j)A DTC will be set after a malfunction has been detected on two consecutive drivin
g cycles.
m) MIL will be illuminated after a malfunction has been detected on two consecutive driving cycles. MIL will be extinguished after the
monitor has run without a malfunction
(same or subse
quent drive c
ycle
).
n) A check cap light will be illuminated after a malfunction has been detected on one driving cycle. The check cap light will be
extinguished after the monitor has run without a malfunction (same or subsequent drive cycle).
t) The MIL will be illuminated after a pending code has been confirmed. The MIL will be extinguished after three consecutive driving c
ycles where the monitor was run without a malfunction. This monitor em
ploye EVMA.
20