NISSAN TIIDA 2007 Service Repair Manual

EC-1222
< ECU DIAGNOSIS >[K9K]
ECM
90
(Y)128
(B)Electric throttle control actu-
atorInput[Engine is running]
 Idle speed
Duty signal [Engine is running]
 For a few seconds after turn-
ing ignition switch OFF
[Ignition switch: OFF]
 More than a few seconds af-
ter turning ignition switch
OFF
94
(LG)128
(B)Electric throttle control actu-
atorOutput[Engine is running]
Warm-up condition
 Idle speedApproximately 0V
95
(G)128
(B)EGR volume control valve
(DC motor)Output[Ignition switch: OFF]
 For a few seconds after the
following conditions are met
and ignition switch is turned
OFF.
-Warm-up condition
- Start engine and let it idle for
3 minutes.
NOTE:
The duty cycle changes de-
pending on EGR volume
control valve operation.1 - 14V
96
(L)128
(B)EGR volume control valve
(DC motor)Output[Engine is running]
Warm-up condition
 Idle speed12.8V
[Ignition switch: OFF]
 For a few seconds after turn-
ing ignition switch OFF0V
98
(GR)128
(B)ASCD switch Input[Ignition switch: ON]
 ASCD switch: ONBATTERY VOLTAGE
(11 - 14V)
[Ignition switch: ON]
 ASCD switch: OFFApproximately 0V
99
(P)128
(B)CAN communication lineInput/
Output——
100
(L)128
(B)CAN communication lineInput/
Output——
108
(G)128
(B)ASCD clutch switch Input[Ignition switch: ON]
 Clutch pedal: Slightly de-
pressedApproximately 0V
[Ignition switch: ON]
 Clutch pedal: Fully releasedBATTERY VOLTAGE
(11 - 14V)
11 0
(R)111
(B)ASCD steering switch Input[Ignition switch: ON]
 ASCD steering switch: OFFApproximately 5V
[Ignition switch: ON]
 RESUME switch: PressedApproximately 3.8V
[Ignition switch: ON]
 SET+ switch: PressedApproximately 2.4V
[Ignition switch: ON]
 SET– switch: PressedApproximately 1.3V
[Ignition switch: ON]
 CANCEL switch: PressedApproximately 0V Terminal No. Description
ConditionVa l u e
(Approx.)
+ -– Signal nameInput/
Output
MBIB1822E

ECM
EC-1223
< ECU DIAGNOSIS >[K9K]
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: Average voltage for pulse signal (Actual pulse signal can be confirmed by oscilloscope.)
Conformity CheckINFOID:0000000001538653
MAIN SCREEN
111
B—ASCD steering switch
ground—— —
11 5
(R)128
(B)Stop lamp switch —[Ignition switch: OFF]
 Brake pedal: Fully releasedApproximately 0V
[Ignition switch: OFF]
 Brake pedal: Slightly de-
pressedBATTERY VOLTAGE
(11 - 14V)
11 6
(GR)128
(B)ASCD brake switch Input[Ignition switch: ON]
 Brake pedal: Slightly de-
pressedApproximately 0V
[Ignition switch: ON]
 Brake pedal: Fully releasedBATTERY VOLTAGE(11 - 14V)
11 8
(SB)120
(Y)Sensor power supply
(Accelerator pedal position
sensor 2)—[Ignition switch: ON]Approximately 5V
11 9
(GR)120
(Y)Accelerator pedal position
sensor 2Input[Ignition switch: ON]
 Engine stopped
 Accelerator pedal: Fully re-
leased0.3 - 0.6V
[Ignition switch: ON]
 Engine stopped
 Accelerator pedal: Fully de-
pressed1.95 - 2.4V
120
(Y)—Sensor ground
(Accelerator pedal position
sensor 2)—— —
122
(P:
LHD)
(O:
RHD)127
(R)Sensor power supply
(Accelerator pedal position
sensor 1)—[Ignition switch: ON]Approximately 5.0V
123
(B)
124
(B)
125
(B)
128
(B)— ECM ground — — —
126
(G)127
(R)Accelerator pedal position
sensor 1Input[Ignition switch: ON]
 Engine stopped
 Accelerator pedal: Fully re-
leased0.6 - 0.9V
[Ignition switch ON]
 Engine stopped
 Accelerator pedal: Fully de-
pressed3.9 - 4.7V
127
(R)—
Sensor ground
(Accelerator pedal position
sensor 1)—— — Terminal No. Description
ConditionVa l u e
(Approx.)
+ -– Signal nameInput/
Output

EC-1224
< ECU DIAGNOSIS >[K9K]
ECM
Test Condition: Engine Stopped and Ignition Switch ON
Order Function Parameter Display and notes Trouble diagnosis
1 Battery voltage BATTERY VOLTAGE12 V < BATTERY VOLTAGE <
14.4 VIn the event of a malfunction, per-
form the trouble diagnosis for
CHARGING SYSTEM.
2 Engine speed ENGINE SPEEDIndicates the engine's rotational
speed in rpm.In the event of a malfunction, per-
form the trouble diagnosis for DTC
P0335 CKP SENSOR.
3Engine coolant tem-
peratureWATER TEMPClose to ambient temperature
(cold engine).
Indicates the engine coolant tem-
perature in ° C.In the event of a malfunction, per-
form the trouble diagnosis for DTC
P0115 ETC SENSOR.
4Accelerator pedal po-
sitionACCEL/PDL POS0%= ACCEL/PDL POS < 100%
Indicates the percentage of the
pedal position between no load
and full load positionIn the event of a malfunction, per-
form the trouble diagnosis for APP
SENSOR (DTC P0225, and P2120)
and SENSOR POWER SUPPLY
(DTC P0641 and P0651).
5 Inlet air temperature INLET AIR TEMIndicates the intake air tempera-
ture in °C. This information is pro-
vided by the IAT sensor.In the event of a malfunction, per-
form the trouble diagnosis for DTC
P0110 IAT SENSOR.
6Fuel pump tempera-
tureFUEL TEMPClose to ambient temperature
(cold engine).
Indicates the fuel pump tempera-
ture in ° C.In the event of a malfunction, per-
form the trouble diagnosis for DTC
P0180 FTT SENSOR.
7 Intake air pressureATOMOS PRESS700 mbar < ATOMOS PRESS <
11 0 0 m b a r
Indicates the ambient barometric
pressure in mbar. The sensor is
incorporated in the ECM.If not consistent, check ATOMOS
PRESS = INLET PRESS = local
ambient barometric pressure, with
the engine stopped and ignition
switch ON.
INLET PRESSIndicates the pressure in the tur-
bocharger in mbar.
8 Fuel rail pressure RAIL PRESSUREApproximately 0 bar
Indicates the fuel rail pressure in
bar of the diesel fuel in the fuel
rail.
This pressure is supplied by the
fuel rail pressure sensor.In the event of a malfunction, per-
form the trouble diagnosis for DTC
P0190 and P1089 FRP SENSOR.
9Engine MOTORSTOPPED
Indicates the current status of the
engine.
 STOPPED
STARTER
ACTIVATED
 RUNNINGNONE.

ECM
EC-1225
< ECU DIAGNOSIS >[K9K]
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10 Engine immobilizer ENGINE IMMOBIINACTIVE
Indicates the status of the immo-
bilizer system.
 INACTIVE: The ECM has rec-
ognized the immobilizer code
transmitted by the Intelligent
Key unit or BCM.
 ACTIVE: The ECM does not
recognize the immobilizer code
transmitted by the Intelligent
Key unit or BCM.If ACTIVE, perform the trouble diag-
nosis for NATS.
11 Vehicle speed VEHICLE SPEED0 km/h (mph)
Indicates the vehicle speed in km/
h (mph). This parameter is trans-
mitted by the “ABS actuator and
electric unit (control unit)” or com-
bination meter via CAN communi-
cation line.Perform the trouble diagnosis for
CAN communication line. Perform
the trouble diagnosis for “ABS actu-
ator and electric unit (control unit)”
or combination meter. Order Function Parameter Display and notes Trouble diagnosis
Order Function Parameter Display and notes Trouble diagnosis
1 Battery voltage BATTERY VOLTAGE13V < BATTERY VOLTAGE <
16VIn the event of a malfunction, per-
form the trouble diagnosis for
CHARGING SYSTEM.
2 Engine speed ENGINE SPEEDAbout 800 rpm
Indicates the engine's rotational
speed in rpm.In the event of a malfunction, per-
form the trouble diagnosis for DTC
P0335 CKP SENSOR.
3Engine coolant tem-
peratureWATER TEMPIndicates the engine coolant
temperature in °C.In the event of a malfunction, per-
form the trouble diagnosis for DTC
P0115 ETC SENSOR.
4Accelerator pedal
positionACCEL/PDL POS0%= ACCEL/PDL POS < 100%
Indicates the percentage of the
pedal position between no load
and full load positionIn the event of a malfunction, per-
form the trouble diagnosis for APP
SENSOR (DTC P0225, and P2120)
and SENSOR POWER SUPPLY
(DTC P0641 and P0651).
5Inlet air tempera-
tureINLET AIR TEMIndicates the intake air tempera-
ture in °C. This information is
provided by the IAT sensor.In the event of a malfunction, per-
form the trouble diagnosis for DTC
P0110 IAT SENSOR.
6Fuel pump temper-
atureFUEL TEMPIndicates the intake air tempera-
ture in °C. This information is
provided by the fuel pump tem-
perature sensor.In the event of a malfunction, per-
form the trouble diagnosis for DTC
P0180 FTT SENSOR.
7 Intake air pressureATOMOS PRESS700 mbar < ATOMOS PRESS <
11 0 0 m b a r
Indicates the ambient barometric
pressure in mbar. The sensor is
incorporated in the ECM.If not consistent, check ATOMOS
PRESS = INLET PRESS = local am-
bient barometric pressure, with the
engine stopped and ignition switch
ON.
INLET PRESSIndicates the pressure in the tur-
bocharger in mbar.
INLET PRESS = local ambient
barometric pressure.
8 Fuel rail pressure RAIL PRESSUREIndicates the fuel rail pressure in
bar of the diesel fuel in the fuel
rail.
This pressure measured by the
fuel rail pressure sensor.In the event of a malfunction, per-
form the trouble diagnosis for DTC
P0190 and P1089 FRP SENSOR.

EC-1226
< ECU DIAGNOSIS >[K9K]
ECM
AIR CIRC SUBFUNCTION (TURBOCHARGER/INTAKE AIR)
Test Condition: Engine Stopped and Ignition Switch ON
9 Engine MOTORRUNNING
Indicates the current status of
the engine.
 STOPPED
STARTER
 A C T I VAT E D
 RUNNINGNONE.
10 Engine immobilizer ENGINE IMMOBIINACTIVE
Indicates the status of the immo-
bilizer system.
 INACTIVE: The ECM has rec-
ognized the immobilizer code
transmitted by the Intelligent
Key unit or BCM.
 ACTIVE: The ECM does not
recognize the immobilizer
code transmitted by the Intelli-
gent Key unit or BCM.If ACTIVE, perform the trouble diag-
nosis for NATS.
11 Vehicle speed VEHICLE SPEED0 km/h (mph)
Indicates the vehicle speed in
km/h (mph). This parameter is
transmitted by the “ABS actuator
and electric unit (control unit)” or
combination meter via CAN
communication line.Perform the trouble diagnosis for
CAN communication line. Perform
the trouble diagnosis for “ABS actu-
ator and electric unit (control unit)” or
combination meter. Order Function Parameter Display and notes Trouble diagnosis
Order Function Parameter Display and notes Trouble diagnosis
1 Intake air pressureATOMOS PRESS700 mbar < ATOMOS PRESS
< 1100 mbar
Indicates the ambient baromet-
ric pressure in mbar. The sen-
sor is incorporated in the ECM.If not consistent, check ATOMOS
PRESS = INLET PRESS = local
ambient barometric pressure, with
the engine stopped and ignition
switch ON.
INLET PRESSIndicates the pressure in the
turbocharger in mbar.
2 Intake airATMOS PRES SEN V1.6V < ATMOS PRES SEN V <
4.9VIn the event of a malfunction, per-
form the trouble diagnosis for DTC
P2226 BARO SENSOR.
AIR TEMP SEN V0.1V < AIR TEMP SEN V <
4.8VIn the event of a malfunction, per-
form the trouble diagnosis for DTC
P0110 IAT SENSOR.
3air flowAIR FLOW0 mg/st
Mass air flow estimated by the
ECM.
In the event of a malfunction, per-
form the trouble diagnosis for DTC
P0100 MAF SENSOR. AIR FLOW DEMANDMass air flow request set point
the ECM.
AIR FLOW SUPLY V0.27V < AIR FLOW SUPLY V <
4.56V
Indicates voltage of the mass
air flow sensor.
4 Inlet air temperature INLET AIR TEMIndicates the intake air temper-
ature in °C. This information is
provided by the IAT sensor.In the event of a malfunction, per-
form the trouble diagnosis for DTC
P0110 IAT SENSOR.
5 Engine speed ENGINE SPEED0 rpm
Indicates the engine's rotation-
al speed in rpm.In the event of a malfunction, per-
form the trouble diagnosis for DTC
P0335 CKP SENSOR.

ECM
EC-1227
< ECU DIAGNOSIS >[K9K]
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*: Just at start time. After 1 minute, EGR volume control valve will close and flow start increase.
FUEL CIRCUIT SUB FUNCTION
Test Condition: Engine Stopped and Ignition Switch ON
Order Function Parameter Display and notes Trouble diagnosis
1 Intake air pressureATOMOS PRESS700 mbar < ATOMOS PRESS
< 1100 mbar
Indicates the ambient baromet-
ric pressure in mbar. The sen-
sor is incorporated in the ECM.If not consistent, check ATOMOS
PRESS = INLET PRESS = local
ambient barometric pressure, with
the engine stopped and ignition
switch ON.
INLET PRESSIndicates the pressure in the
turbocharger in mbar.
INLET PRESS = local ambient
barometric pressure.
2 Intake airATMOS PRES SEN V1.6V < ATMOS PRES SEN V <
4.9VIn the event of a malfunction, per-
form the trouble diagnosis for DTC
P2226 BARO SENSOR.
AIR TEMP SEN V0.1V < AIR TEMP SEN V <
4.8VIn the event of a malfunction, per-
form the trouble diagnosis for DTC
P0110 IAT SENSOR.
3air flowAIR FLOW200* < AIR FLOW < 350 mg/st
Mass air flow measured the
ECM.
In the event of a malfunction, per-
form the trouble diagnosis for DTC
P0100 MAF SENSOR. AIR FLOW DEMANDThe flow must follow the re-
quest and must be near to it.
AIR FLOW SUPLY VIndicates the voltage of the
mass air flow sensor.
4 Inlet air temperature INLET AIR TEMIndicates the intake air temper-
ature in °C. This information is
provided by the IAT sensor.In the event of a malfunction, per-
form the trouble diagnosis for DTC
P0110 IAT SENSOR.
5 Engine speed ENGINE SPEEDAbout 800 rpm
Indicates the engine's rotation-
al speed in rpm.In the event of a malfunction, per-
form the trouble diagnosis for DTC
P0335 CKP SENSOR.
Order Function Parameter Display and notes Trouble diagnosis
1Fuel pump tempera-
tureFUEL TEMPClose to ambient temperature
(cold engine).
Indicates the fuel pump tempera-
ture in °C.In the event of a malfunction, per-
form the trouble diagnosis for DTC
P0180 FTT SENSOR.
FUEL TEMP SEN V 0.1V < FUEL TEMP SEN V <
4.9V
2Engine coolant tem-
peratureWATER TEMPClose to ambient temperature
(cold engine).
Indicates the engine coolant tem-
perature in °C.In the event of a malfunction, per-
form the trouble diagnosis for DTC
P0115 ETC SENSOR.
COOLAN TMP SEN V0.13V < COOLAN TMP SEN V <
4.90V
3 Engine speed ENGINE SPEEDIndicates the engine's rotational
speed in rpm.In the event of a malfunction, per-
form the trouble diagnosis for DTC
P0335 CKP SENSOR.
4 Fuel rail pressureRAIL PRESSUREIndicates the theoretical pressure
value for optimum engine opera-
tion.In the event of a malfunction, per-
form the trouble diagnosis for DTC
P0190 and P1089 FRP SENSOR. RAIL PRES SET RAIL PRES SET = 0 bar
RAIL PRES S V 0.4V < RAIL PRES S V < 4.7V

EC-1228
< ECU DIAGNOSIS >[K9K]
ECM
Test Condition: Engine at Idle
5 Fuel flowFUEL FLOW REG INACTIVE In the event of a malfunction, per-
form the trouble diagnosis for DTC
P0001 FUEL PUMP. FUEL FLOW S/V CU Close to 0A
F/FLOW CORR CYL1
Cylinder no. 1 - 4 fuel flow correc-
tion = 0NONE F/FLOW CORR CYL2
F/FLOW CORR CYL3
F/FLOW CORR CYL4
6 Fuel pressure FUEL PRESS REG INACTIVEIn the event of a malfunction, per-
form the trouble diagnosis for DTC
P0090 FUEL PUMP.
7Intake air tempera-
tureAIR TEMP SEN V 0.1V < AIR TEMP SEN V < 4.8VIn the event of a malfunction, per-
form the trouble diagnosis for DTC
P0110 IAT SENSOR.
8 Fuel injectorsINJCTR CONDNSR V49V < INJCTR CONDNSR V <
96V
In the event of a malfunction, per-
form the trouble diagnosis for
P0201, P0202, P0203 and P0204
FUEL INJECTOR. COMM INJCTR CYL1
INACTIVE COMM INJCTR CYL2
COMM INJCTR CYL3
COMM INJCTR CYL4 Order Function Parameter Display and notes Trouble diagnosis
Order Function Parameter Display and notes Trouble diagnosis
1Fuel pump tempera-
tureFUEL TEMPIndicates the fuel pump tempera-
ture in °C.In the event of a malfunction, per-
form the trouble diagnosis for DTC
P0180 FTT SENSOR. FUEL TEMP SEN V 0.1V < FUEL TEMP SEN V <
4.9V
2Engine coolant tem-
peratureWATER TEMPIndicates the engine coolant tem-
perature in °C.In the event of a malfunction, per-
form the trouble diagnosis for DTC
P0115 ETC SENSOR.
COOLAN TMP SEN V0.1V < COOLAN TMP SEN V <
4.9V
3 Engine speed ENGINE SPEEDAbout 800 rpm
Indicates the engine's rotational
speed in rpm.In the event of a malfunction, per-
form the trouble diagnosis for DTC
P0335 CKP SENSOR.
4 Fuel rail pressureRAIL PRESSUREIndicates the theoretical pressure
value for optimum engine opera-
tion.
200 bar < RAIL PRESSURE <
250 barIn the event of a malfunction, per-
form the trouble diagnosis for DTC
P0190 and P1089 FRP SENSOR.
RAIL PRES SETThe pressure must follow the set-
point and must be near to it.
RAIL PRES S V 0.4V < RAIL PRES S V < 4.7V
5 Fuel flowFUEL FLOW REG ACTIVE NONE.
FUEL FLOW S/V CU Maximum 2A NONE.
F/FLOW CORR CYL1
F/FLOW CORR CYL1-4 = 0.3 -
1.9In the event of a malfunction, per-
form the trouble diagnosis for
TEST6: MAJJOR LEAK IIN FUEL
INJECTORS/FUEL INJECTORS
OPEN. F/FLOW CORR CYL2
F/FLOW CORR CYL3
F/FLOW CORR CYL4
6 Fuel pressure FUEL PRESS REG ACTIVEIn the event of a malfunction, per-
form the trouble diagnosis for DTC
P0090 FUEL PUMP.

ECM
EC-1229
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DRIVER PARAMETERS SUB FUNCTION
Test Condition: Engine Stopped and Ignition Switch ON
Test Condition: Engine at Idle
7Intake air tempera-
tureAIR TEMP SEN V 0.1V < AIR TEMP SEN V < 4.8VIn the event of a malfunction, per-
form the trouble diagnosis for DTC
P0110 IAT SENSOR.
8 Fuel injectorsINJCTR CONDNSR V49V < INJCTR CONDNSR V <
96V
In the event of a malfunction, per-
form the trouble diagnosis for
P0201, P0202, P0203 and P0204
FUEL INJECTOR. COMM INJCTR CYL1
ACTIVE COMM INJCTR CYL2
COMM INJCTR CYL3
COMM INJCTR CYL4 Order Function Parameter Display and notes Trouble diagnosis
Order Function Parameter Display and notes Trouble diagnosis
1 Power supply C/U+AFTR IGN PRESENT NONE
2 Clutch pedal ACC PEDAL DETECT NOIn the event of a malfunction, per-
form the trouble diagnosis for
ASCD CLUTCH SWITCH.
3Malfunction indica-
torSEVERITY 1 LIGHT INACTIVE
Also check that there are no mal-
function ECM.
SEVERITY 2 LIGHT INACTIVE
4 Accelerator pedalACCEL/PDL POS0% = ACCEL/PDL POS < 100%
Indicates the percentage of the
accelerator pedal position be-
tween no load and full load posi-
tion.
In the event of a malfunction, per-
form the trouble diagnosis for APP
SENSOR (DTC P0225, and
P2120) and SENSOR POWER
SUPPLY (DTC P0641 and P0651). PEDAL POS TRACK1 Indicates the percentage of the
accelerator pedal position be-
tween no load and full load posi-
tion.
PL PTNMR T1 V0.4V < PL PTNMR T1V < 4.64V
Indicates the percentage of the
accelerator pedal position be-
tween no load (0V) and full load
(5V) position.
PEDAL POS TRACK2 Indicates the percentage of the
accelerator pedal position be-
tween no load and full load posi-
tion.
PL PTNMR T2 V0.27V < PL PTNMR T2V < 3.75V
Indicates the percentage of the
accelerator pedal position be-
tween no load (0V) and full load
(5V) position.
Order Function Parameter Display and notes Trouble diagnosis
1 Power supply C/U+AFTR IGN PRESENT NONE
2 Clutch pedal ACC PEDAL DETECT NOIn the event of a malfunction, per-
form the trouble diagnosis for
ASCD CLUTCH SWITCH.
3 Malfunction indicatorSEVERITY 1 LIGHT INACTIVE
Also check that there are no mal-
function ECM.
SEVERITY 2 LIGHT INACTIVE

EC-1230
< ECU DIAGNOSIS >[K9K]
ECM
PRE-HEATING/IGNITION SUBFUNCTION
Test Condition: Engine Stopped and Ignition Switch ON
Test Condition: Engine at Idle
SUBFUNCTION
Test Condition: Engine Stopped and Ignition Switch ON
4 Accelerator pedalACCEL/PDL POS0% = ACCEL/PDL POS < 100%
Indicates the percentage of the
accelerator pedal position be-
tween no load and full load posi-
tion.
In the event of a malfunction, per-
form the trouble diagnosis for APP
SENSOR (DTC P0225, and
P2120) and SENSOR POWER
SUPPLY (DTC P0641 and
P0651). PEDAL POS TRACK1 Indicates the percentage of the
accelerator pedal position be-
tween no load and full load posi-
tion.
PL PTNMR T1 V0.4V < PL PTNMR T1V < 4.64V
Indicates the percentage of the
accelerator pedal position be-
tween no load and full load posi-
tion.
PEDAL POS TRACK2 Indicates the percentage of the
accelerator pedal position be-
tween no load and full load posi-
tion.
PL PTNMR T2 V0.27V < PL PTNMR T2V < 3.75V
Indicates the percentage of the
accelerator pedal position be-
tween no load and full load posi-
tion. Order Function Parameter Display and notes Trouble diagnosis
Order Function Parameter Display and notes Trouble diagnosis
1 Preheating PREHEAT RLY CONT INACTIVE NONE
2Engine coolant tem-
peratureWATER TEMPClose to ambient temperature
(cold engine).
Indicates the engine coolant
temperature in °C.In the event of a malfunction, per-
form the trouble diagnosis for DTC
P0115 ETC SENSOR.
3 Battery voltage BATTERY VOLTAGE12 V < BATTERY VOLTAGE <
14.4VIn the event of a malfunction, per-
form the trouble diagnosis for
CHARGING SYSTEM.
4 Intake air temperature INLET AIR TEMIndicates the intake air tempera-
ture in °C. This information is
provided by the IAT sensor.In the event of a malfunction, per-
form the trouble diagnosis for DTC
P0110 IAT SENSOR.
Order Function Parameter Display and notes Trouble diagnosis
1 Preheating PREHEAT RLY CONT INACTIVE NONE
2Engine coolant tem-
peratureWATER TEMPIndicates the engine coolant
temperature in °C.In the event of a malfunction, per-
form the trouble diagnosis for DTC
P0115 ETC SENSOR.
3 Battery voltage BATTERY VOLTAGE13 V < BATTERY VOLTAGE <
16VIn the event of a malfunction, per-
form the trouble diagnosis for
CHARGING SYSTEM.
4Intake air tempera-
tureINLET AIR TEMIndicates the intake air tempera-
ture in °C. This information is
provided by the IAT sensor.In the event of a malfunction, per-
form the trouble diagnosis for DTC
P0110 IAT SENSOR.

ECM
EC-1231
< ECU DIAGNOSIS >[K9K]
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Order Function Parameter Display and notes Trouble diagnosis
1 Fuel pressure FUEL PRESS REG INACTIVEIn the event of a malfunction, per-
form the trouble diagnosis for DTC
P0090 FUEL PUMP.
2Fuel pump tempera-
tureFUEL TEMPClose to ambient temperature
(cold engine).
Indicates the intake air tempera-
ture in °C. This information is pro-
vided by the fuel pump
temperature sensor.In the event of a malfunction, per-
form the trouble diagnosis for DTC
P0180 FTT SENSOR.
3Engine coolant tem-
peratureWATER TEMPClose to ambient temperature
(cold engine).
Indicates the engine coolant
temperature in °C. In the event of a malfunction, per-
form the trouble diagnosis for DTC
P0115 ECT SENSOR.
4 Inlet air temperature INLET AIR TEMIndicates the intake air tempera-
ture in °C. This information is pro-
vided by the IAT sensor.In the event of a malfunction, per-
form the trouble diagnosis for DTC
P0110 IAT SENSOR.
5 Intake air pressure ATOMOS PRESS700 mbar < ATOMOS PRESS <
1100 mbar
Indicates the ambient barometric
pressure in mbar. The sensor is
incorporated in the ECM.In the event of a malfunction, per-
form the trouble diagnosis for DTC
P2226 BARO SENSOR.
6 Fuel rail pressureRAIL PRESSUREIndicates the theoretical pressure
value for optimum engine opera-
tion.In the event of a malfunction, per-
form the trouble diagnosis for DTC
P0190 and P1089 FRP SENSOR.
RAIL PRES SET RAIL PRES SET = 0 bar.
7 Air flow AIR FLOW0 mg/st
Air flow estimated by the ECM.NONE
8 EGR EGR POS SE VO540 mV < EGR POS SE VO <
4490 mVIn the event of a malfunction, per-
form the trouble diagnosis for DTC
P0409 EGR VOLUME CONTROL
VALVE CONTROL POSITION
SENSOR.
9 Intake air pressure INLET PRESS900 mbar < INLET PRESS <
1100 mbar
Indicates the pressure in the tur-
bocharger in mbar.NONE
10Accelerator pedal
positionACCEL/PDL POS0% = ACCEL/PDL POS < 100%
Indicates the percentage of the
pedal position between no load
and full load positionIn the event of a malfunction, per-
form the trouble diagnosis for APP
SENSOR (DTC P0225, and P2120)
and SENSOR POWER SUPPLY
(DTC P0641 and P0651).
Order Function Parameter Display and notes Trouble diagnosis
1 Fuel pressure FUEL PRESS REG INACTIVE NONE
2Fuel pump tempera-
tureFUEL TEMPIndicates the intake air tempera-
ture in °C. This information is pro-
vided by the fuel pump
temperature sensor.In the event of a malfunction, per-
form the trouble diagnosis for DTC
P0180 FTT SENSOR.
3Engine coolant tem-
peratureWATER TEMPIndicates the engine coolant
temperature in °C. In the event of a malfunction, per-
form the trouble diagnosis for DTC
P0115 ECT SENSOR.
4 Inlet air temperature INLET AIR TEMIndicates the intake air tempera-
ture in °C. This information is pro-
vided by the IAT sensor.In the event of a malfunction, per-
form the trouble diagnosis for DTC
P0110 IAT SENSOR.