battery NISSAN X-TRAIL 2003 Service Owner's Manual

CYLINDER HEAD
EM-197
[YD22DDTi]
C
D
E
F
G
H
I
J
K
L
MA
EM

10. Complete this operation as follows:
a. Turn the ignition switch to “OFF”.
b. Disconnect battery negative terminal.
c. Install glow plug and install all the parts removed in step 4.
d. Install fuel pump fuse [ENG CONT (20A)].
e. Connect battery negative terminal.
f. Using CONSULT-II make sure no DTC is indicated for items of self-diagnosis.
Removal and InstallationEBS00LRW
REMOVAL
1. Drain engine coolant. Refer to CO-31, "Changing Engine Coolant" .
2. Remove the following:

Charge air cooler (Refer to EM-135, "Removal and Installation" .)

Rocker cover (Refer to EM-168, "Removal and Installation" .)

Air cleaner and air duct (Refer to EM-133, "Removal and Installation" .)

Vacuum pump (Refer to EM-153, "Removal and Installation" .)

Spill tube and fuel injector (Refer to EM-157, "Removal and Installation" .)

Intake manifold (Refer to EM-136, "Removal and Installation" .)

Exhaust manifold and Turbocharger (Refer to EM-141, "Removal and Installation" .)

Secondary timing chain (Refer to EM-180, "Removal and Installation" .)

Camshaft (Refer to EM-170, "Removal and Installation" .)
3. Remove cylinder head assembly.
1. Glow plug 2. Cylinder head assembly 3. Cylinder head bolt
4. Copper washer 5. Engine coolant temperature sensor 6. Gasket
7. Water outlet 8. Dowel pin 9. Gasket
10. Glow harness 11. Glow plate 12. Cap
PBIC2437E

ENGINE ASSEMBLY
EM-209
[YD22DDTi]
C
D
E
F
G
H
I
J
K
L
MA
EM

REMOVAL
Description of work
Remove engine, transaxle and transfer assembly with front suspension member from vehicle downward. Sep-
arate suspension member, and then separate engine and transaxle.
Preparation
1. Remove hood assembly. Refer to BL-12, "HOOD" .
2. Drain engine coolant from radiator drain plug. Refer to CO-31, "
DRAINING ENGINE COOLANT" .
3. Remove the following parts.

LH/RH engine undercover

LH/RH front wheels

Battery; Refer to SC-3, "BATTERY" .

Drive belts; Refer to EM-132, "Removal and Installation" .

Air duct and air cleaner case assembly; Refer to EM-133, "Removal and Installation" .

Alternator; Refer to SC-16, "Removal and Installation" .

Radiator and cooling fan assembly; Refer to CO-34, "Removal and Installation" and CO-36, "COOL-
ING FAN" .

Charge air cooler; Refer to EM-135, "CHARGE AIR COOLER" .
4. Disconnect engine room harness from the engine side and set it aside for easier work.
5. Disconnect all the body-side vacuum hoses and air hoses at engine side.
Engine room LH
1. Disconnect fuel feed hose and return hose, and plug it to prevent fuel from draining. Refer to EM-136,
"INTAKE MANIFOLD" .
2. Disconnect heater hose, and install plug it to prevent engine coolant from draining. Refer to EM-136,
"INTAKE MANIFOLD" .
3. Remove clutch operating cylinder from transaxle, and move it aside. Refer to MT-17, "
TRANSAXLE
ASSEMBLY" and CL-10, "OPERATING CYLINDER" .
4. Disconnect shift cable from transaxle. Refer to MT-14, "
CONTROL LINKAGE" .
Engine room RH
1. Remove engine coolant reservoir tank. Refer to CO-34, "RADIATOR" .
2. Remove A/C compressor with piping connected from engine. Temporarily secure it on body with a rope to
avoid putting load on it. Refer to ATC-144, "
Removal and Installation of Compressor" .
Vehicle underbody
1. Remove exhaust front tube. Refer to EX-2, "Removal and Installation" .
2. Remove propeller shaft. Refer to PR-4, "
Removal and Installation" .
3. Remove steering shaft from steering gear. Refer to PS-10, "
STEERING COLUMN" .
4. Disconnect power steering fluid cooler piping at a point between body and engine. Refer to PS-34,
"HYDRAULIC LINE" .
5. Remove ABS sensor from brake caliper. Refer to BRC-45, "
WHEEL SENSORS" (ABS), BRC-116,
"WHEEL SENSORS" (ESP/TCS/ABS).
6. Remove brake caliper with piping connected from steering knuckle. Temporarily secure it on body with a
rope to avoid load on it. Refer to BR-27, "
FRONT DISC BRAKE" .
7. Remove left and right suspensions from steering knuckle under strut. Refer to FSU-5, "
FRONT SUSPEN-
SION ASSEMBLY" .

EC-12 CONSULT-II Reference Value in Data Monitor Mode
1074
ECM Terminals and Reference Value ..................1074
On Board Diagnosis Logic ...................................1074
DTC Confirmation Procedure ..............................1075
Wiring Diagram ....................................................1076
Diagnostic Procedure ..........................................1077
Component Inspection .........................................1078
Removal and Installation .....................................1079
DTC P0404 EGR VOLUME CONTROL VALVE .....1080
Description ...........................................................1080
CONSULT-II Reference Value in Data Monitor Mode
1081
ECM Terminals and Reference Value ..................1081
On Board Diagnosis Logic ...................................1081
DTC Confirmation Procedure ..............................1081
Wiring Diagram ....................................................1083
Diagnostic Procedure ..........................................1084
Component Inspection .........................................1085
Removal and Installation .....................................1086
DTC P0563 BATTERY VOLTAGE .........................1087
On Board Diagnosis Logic ...................................1087
DTC Confirmation Procedure ..............................1087
Diagnostic Procedure ..........................................1087
DTC P0605 ECM ....................................................1089
Description ...........................................................1089
On Board Diagnosis Logic ...................................1089
DTC Confirmation Procedure ..............................1089
Diagnostic Procedure ..........................................1090
DTC P0606 ECM ....................................................1091
Description ...........................................................1091
On Board Diagnosis Logic ...................................1091
DTC Confirmation Procedure ..............................1091
Diagnostic Procedure ..........................................1092
DTC P0628, P0629 FUEL PUMP ...........................1093
Description ...........................................................1093
CONSULT-II Reference Value in Data Monitor Mode
1093
ECM Terminals and Reference Value ..................1093
On Board Diagnosis Logic ...................................1094
DTC Confirmation Procedure ..............................1094
Wiring Diagram ....................................................1095
Diagnostic Procedure ..........................................1096
Component Inspection .........................................1097
Removal and Installation .....................................1097
DTC P0642, P0643 SENSOR POWER SUPPLY ...1098
Description ...........................................................1098
CONSULT-II Reference Value in Data Monitor Mode
1098
ECM Terminals and Reference Value ..................1098
On Board Diagnosis Logic ...................................1099
DTC Confirmation Procedure ..............................1099
Wiring Diagram ....................................................11 0 0
Diagnostic Procedure ..........................................11 0 1
Component Inspection .........................................11 0 2
Removal and Installation .....................................11 0 3
DTC P0652, P0653 SENSOR POWER SUPPLY ...110 4
Description ...........................................................11 0 4
CONSULT-II Reference Value in Data Monitor Mode 11 0 4
ECM Terminals and Reference Value ..................11 0 4
On Board Diagnosis Logic ...................................11 0 5
DTC Confirmation Procedure ...............................11 0 5
Wiring Diagram ....................................................11 0 6
Diagnostic Procedure ...........................................11 0 7
Component Inspection .........................................11 0 8
Removal and Installation ......................................11 0 9
DTC P0686 ECM RELAY .......................................1110
ECM Terminals and Reference valve ...................111 0
On Board Diagnosis Logic ...................................111 0
DTC Confirmation Procedure ...............................111 0
Wiring Diagram ....................................................1111
Diagnostic Procedure ...........................................111 2
Component Inspection .........................................111 2
DTC P1211 TCS CONTROL UNIT .........................1113
Description ...........................................................111 3
On Board Diagnosis Logic ...................................111 3
DTC Confirmation Procedure ...............................111 3
Diagnostic Procedure ...........................................111 3
DTC P1212 TCS COMMUNICATION LINE ............1114
Description ...........................................................111 4
On Board Diagnosis Logic ...................................111 4
DTC Confirmation Procedure ...............................111 4
Diagnostic Procedure ...........................................111 4
DTC P1260 - P1267 FUEL INJECTOR ADJUST-
MENT RESISTOR ...................................................1115
Description ...........................................................111 5
ECM Terminals and Reference Value ..................111 5
On Board Diagnosis Logic ...................................111 5
DTC Confirmation Procedure ...............................111 6
Wiring Diagram ....................................................111 7
Diagnostic Procedure ...........................................111 8
Component Inspection .........................................111 9
Removal and Installation ......................................11 2 0
DTC P1268 - P1271 FUEL INJECTOR ..................11 21
Component Description .......................................11 2 1
CONSULT-II Reference Value in Data Monitor Mode
11 2 1
ECM Terminals and Reference Value ..................11 2 1
On Board Diagnosis Logic ...................................11 2 2
DTC Confirmation Procedure ...............................11 2 3
Wiring Diagram ....................................................11 2 4
Diagnostic Procedure ...........................................11 2 5
Component Inspection .........................................11 2 6
Removal and Installation ......................................11 2 6
DTC P1272 FUEL PUMP .......................................11 27
Description ...........................................................11 2 7
CONSULT-II Reference Value in Data Monitor Mode
11 2 7
ECM Terminals and Reference Value ..................11 2 7
On Board Diagnosis Logic ...................................11 2 8
DTC Confirmation Procedure ...............................11 2 8
Wiring Diagram ....................................................11 2 9
Diagnostic Procedure ...........................................11 3 0
Component Inspection .........................................11 3 2
Removal and Installation ......................................11 3 3
DTC P1273 FUEL PUMP .......................................11 34
Description ...........................................................11 3 4

EC-16 ECM Terminals and Reference Value ..................1369
On Board Diagnosis Logic ...................................1369
DTC Confirmation Procedure ..............................1370
Wiring Diagram ....................................................1371
Diagnostic Procedure ..........................................1372
Component Inspection .........................................1375
Removal and Installation .....................................1375
DTC P0563 BATTERY VOLTAGE .........................1376
On Board Diagnosis Logic ...................................1376
DTC Confirmation Procedure ..............................1376
Diagnostic Procedure ..........................................1376
DTC P0605 ECM ....................................................1378
Description ...........................................................1378
On Board Diagnosis Logic ...................................1378
DTC Confirmation Procedure ..............................1378
Diagnostic Procedure ..........................................1378
DTC P0606 ECM ....................................................1380
Description ...........................................................1380
On Board Diagnosis Logic ...................................1380
DTC Confirmation Procedure ..............................1380
Diagnostic Procedure ..........................................1380
DTC P0628, P0629 FUEL PUMP ...........................1382
Description ...........................................................1382
CONSULT-II Reference Value in Data Monitor Mode
1382
ECM Terminals and Reference Value ..................1382
On Board Diagnosis Logic ...................................1383
DTC Confirmation Procedure ..............................1383
Wiring Diagram ....................................................1384
Diagnostic Procedure ..........................................1385
Component Inspection .........................................1386
Removal and Installation .....................................1386
DTC P0642, P0643 SENSOR POWER SUPPLY ...1387
Description ...........................................................1387
CONSULT-II Reference Value in Data Monitor Mode
1387
ECM Terminals and Reference Value ..................1387
On Board Diagnosis Logic ...................................1388
DTC Confirmation Procedure ..............................1388
Wiring Diagram ....................................................1389
Diagnostic Procedure ..........................................1390
Component Inspection .........................................1391
Removal and Installation .....................................1392
DTC P0652, P0653 SENSOR POWER SUPPLY ...1393
Description ...........................................................1393
CONSULT-II Reference Value in Data Monitor Mode
1393
ECM Terminals and Reference Value ..................1393
On Board Diagnosis Logic ...................................1394
DTC Confirmation Procedure ..............................1394
Wiring Diagram ....................................................1395
Diagnostic Procedure ..........................................1396
Component Inspection .........................................1397
Removal and Installation .....................................1398
DTC P0686 ECM RELAY .......................................1399
ECM Terminals and Reference valve ..................1399
On Board Diagnosis Logic ...................................1399
DTC Confirmation Procedure ..............................1399
Wiring Diagram ....................................................1400Diagnostic Procedure ...........................................1401
Component Inspection .........................................1401
DTC P1211 TCS CONTROL UNIT .........................1402
Description ...........................................................1402
On Board Diagnosis Logic ...................................1402
DTC Confirmation Procedure ...............................1402
Diagnostic Procedure ...........................................1402
DTC P1212 TCS COMMUNICATION LINE ............1403
Description ...........................................................1403
On Board Diagnosis Logic ...................................1403
DTC Confirmation Procedure ...............................1403
Diagnostic Procedure ...........................................1403
DTC P1260 - P1267 FUEL INJECTOR ADJUST-
MENT RESISTOR ...................................................1404
Description ...........................................................1404
ECM Terminals and Reference Value ..................1404
On Board Diagnosis Logic ...................................1404
DTC Confirmation Procedure ...............................1405
Wiring Diagram ....................................................1406
Diagnostic Procedure ...........................................1407
Component Inspection .........................................1408
Removal and Installation ......................................1409
DTC P1268 - P1271 FUEL INJECTOR ..................1410
Component Description .......................................1410
CONSULT-II Reference Value in Data Monitor Mode
1410
ECM Terminals and Reference Value ..................1410
On Board Diagnosis Logic ...................................1411
DTC Confirmation Procedure ...............................1412
Wiring Diagram ....................................................1413
Diagnostic Procedure ...........................................1414
Component Inspection .........................................1415
Removal and Installation ......................................1415
DTC P1272 FUEL PUMP .......................................1416
Description ...........................................................1416
CONSULT-II Reference Value in Data Monitor Mode
1416
ECM Terminals and Reference Value ..................1416
On Board Diagnosis Logic ...................................1417
DTC Confirmation Procedure ...............................1417
Wiring Diagram ....................................................1418
Diagnostic Procedure ...........................................1419
Component Inspection .........................................1420
Removal and Installation ......................................1420
DTC P1273 FUEL PUMP .......................................1422
Description ...........................................................1422
CONSULT-II Reference Value in Data Monitor Mode
1422
ECM Terminals and Reference Value ..................1422
On Board Diagnosis Logic ...................................1423
DTC Confirmation Procedure ...............................1423
Wiring Diagram ....................................................1424
Diagnostic Procedure ...........................................1425
Component Inspection .........................................1426
Removal and Installation ......................................1426
DTC P1274 FUEL PUMP .......................................1427
Description ...........................................................1427
CONSULT-II Reference Value in Data Monitor Mode
1427

EC-24
[QR (WITH EURO-OBD)]
PRECAUTIONS

PRECAUTIONSPFP:00001
Precautions for Supplemental Restraint System (SRS) “AIR BAG” and “SEAT
BELT PRE-TENSIONER”
EBS010L0
The Supplemental Restraint System such as “AIR BAG” and “SEAT BELT PRE-TENSIONER”, used along
with a front seat belt, helps to reduce the risk or severity of injury to the driver and front passenger for certain
types of collision. Information necessary to service the system safely is included in the SRS and SB section of
this Service Manual.
WARNING:

To avoid rendering the SRS inoperative, which could increase the risk of personal injury or death
in the event of a collision which would result in air bag inflation, all maintenance must be per-
formed by an authorized NISSAN/INFINITI dealer.

Improper maintenance, including incorrect removal and installation of the SRS, can lead to per-
sonal injury caused by unintentional activation of the system. For removal of Spiral Cable and Air
Bag Module, see the SRS section.

Do not use electrical test equipment on any circuit related to the SRS unless instructed to in this
Service Manual. SRS wiring harnesses can be identified by yellow and/or orange harnesses or
harness connectors.
On Board Diagnostic (OBD) System of Engine and A/TEBS010L1
The ECM has an on board diagnostic system. It will light up the malfunction indicator (MI) to warn the driver of
a malfunction causing emission deterioration.
CAUTION:

Be sure to turn the ignition switch OFF and disconnect the battery ground cable before any repair
or inspection work. The open/short circuit of related switches, sensors, solenoid valves, etc. will
cause the MI to light up.

Be sure to connect and lock the connectors securely after work. A loose (unlocked) connector will
cause the MI to light up due to the open circuit. (Be sure the connector is free from water, grease,
dirt, bent terminals, etc.)

Certain systems and components, especially those related to OBD, may use a new style slide-
locking type harness connector. For description and how to disconnect, refer to PG-70, "
HAR-
NESS CONNECTOR" .

Be sure to route and secure the harnesses properly after work. The interference of the harness
with a bracket, etc. may cause the MI to light up due to the short circuit.

Be sure to connect rubber tubes properly after work. A misconnected or disconnected rubber tube
may cause the MI to light up due to the malfunction of the fuel injection system, etc.

Be sure to erase the unnecessary malfunction information (repairs completed) from the ECM and
TCM (Transmission control module) before returning the vehicle to the customer.
PrecautionEBS010L2

Always use a 12 volt battery as power source.

Do not attempt to disconnect battery cables while engine is
running.

Before connecting or disconnecting the ECM harness con-
nector, turn ignition switch OFF and disconnect battery
ground cable. Failure to do so may damage the ECM
because battery voltage is applied to ECM even if ignition
switch is turned OFF.

Before removing parts, turn ignition switch OFF and then
disconnect battery ground cable.
SEF289H

PRECAUTIONS
EC-25
[QR (WITH EURO-OBD)]
C
D
E
F
G
H
I
J
K
L
MA
EC


Do not disassemble ECM.

If battery cable is disconnected, the memory will return to
the initial ECM values.
The ECM will now start to self-control at its initial values.
Engine operation can vary slightly when the cable is dis-
connected. However, this is not an indication of a malfunc-
tion. Do not replace parts because of a slight variation.

When connecting ECM harness connector, fasten it
securely with levers as far as they will go as shown in the
figure.

When connecting or disconnecting pin connectors into or
from ECM, take care not to damage pin terminals (bend or
break).
Make sure that there are not any bends or breaks on ECM
pin terminal, when connecting pin connectors.

Securely connect ECM harness connectors.
A poor connection can cause an extremely high (surge)
voltage to develop in coil and condenser, thus resulting in
damage to ICs.

Keep engine control system harness at least 10 cm (4 in)
away from adjacent harness, to prevent engine control sys-
tem malfunctions due to receiving external noise, degraded
operation of ICs, etc.

Keep engine control system parts and harness dry.

Before replacing ECM, perform ECM Terminals and Refer-
ence Value inspection and make sure ECM functions prop-
erly. Refer to EC-95
.

Handle mass air flow sensor carefully to avoid damage.

Do not disassemble mass air flow sensor.

Do not clean mass air flow sensor with any type of deter-
gent.

Do not disassemble electric throttle control actuator.

Even a slight leak in the air intake system can cause seri-
ous incidents.

Do not shock or jar the camshaft position sensor (PHASE),
crankshaft position sensor (POS).
PBIB1164E
PBIB1512E
PBIB0090E
MEF040D

EC-34
[QR (WITH EURO-OBD)]
ENGINE CONTROL SYSTEM

System ChartEBS010L8
*1: This sensor is not used to control the engine system under normal conditions.
*2: This input signal is sent to the ECM through CAN communication line.
*3: This output signal is sent from the ECM through CAN communication line.
*4: With ESP models.
*5: Without ESP models.
Multiport Fuel Injection (MFI) SystemEBS010L9
INPUT/OUTPUT SIGNAL CHART
*1: This sensor is not used to control the engine system under normal conditions.Input (Sensor) ECM Function Output (Actuator)

Camshaft position sensor (PHASE)

Crankshaft position sensor (POS)

Mass air flow sensor

Engine coolant temperature sensor

Heated oxygen sensor 1

Throttle position sensor

Accelerator pedal position sensor

Park/neutral position (PNP) switch

Intake air temperature sensor

Power steering pressure sensor

Ignition switch

Battery voltage

Knock sensor

Refrigerant pressure sensor

Stop lamp switch

Heated oxygen sensor 2*1

TCM (Transmission control module)*2

ESP/TCS/ABS control unit*2 *4

ABS actuator and electric unit
(control unit)*2 *5

Air conditioner switch

Wheel sensor*2

Electrical load signalFuel injection & mixture ratio control Fuel injector
Electronic ignition system Power transistor
Fuel pump control Fuel pump relay
On board diagnostic system
MI (On the instrument panel)*
3
Heated oxygen sensor 1 heater control Heated oxygen sensor 1 heater
Heated oxygen sensor 2 heater control Heated oxygen sensor 2 heater
EVAP canister purge flow controlEVAP canister purge volume control
solenoid valve
Air conditioning cut control Air conditioner relay
Cooling fan control Cooling fan relay
Sensor Input Signal to ECMECM
functionActuator
Crankshaft position sensor (POS)
Camshaft position sensor (PHASE)Engine speed*
3 and piston position
Fuel injec-
tion & mix-
ture ratio
controlFuel injector Mass air flow sensor Amount of intake air
Engine coolant temperature sensor Engine coolant temperature
Heated oxygen sensor 1 Density of oxygen in exhaust gas
Throttle position sensor Throttle position
Accelerator pedal position sensor Accelerator pedal position
Park/neutral position (PNP) switch Gear position
Knock sensor Engine knocking condition
Battery
Battery voltage*
3
Power steering pressure sensor Power steering operation
Heated oxygen sensor 2*
1Density of oxygen in exhaust gas
Wheel sensor*
2Vehicle speed
Air conditioner switch Air conditioner operation

ENGINE CONTROL SYSTEM
EC-35
[QR (WITH EURO-OBD)]
C
D
E
F
G
H
I
J
K
L
MA
EC

*2: This signal is sent to the ECM through CAN communication line.
*3: ECM determines the start signal status by the signals of engine speed and battery voltage.
SYSTEM DESCRIPTION
The amount of fuel injected from the fuel injector is determined by the ECM. The ECM controls the length of
time the valve remains open (injection pulse duration). The amount of fuel injected is a program value in the
ECM memory. The program value is preset by engine operating conditions. These conditions are determined
by input signals (for engine speed and intake air) from both the crankshaft position sensor and the mass air
flow sensor.
VARIOUS FUEL INJECTION INCREASE/DECREASE COMPENSATION
In addition, the amount of fuel injected is compensated to improve engine performance under various operat-
ing conditions as listed below.


During warm-up

When starting the engine

During acceleration

Hot-engine operation

When selector lever is changed from N to D (A/T models)

High-load, high-speed operation


During deceleration

During high engine speed operation
MIXTURE RATIO FEEDBACK CONTROL (CLOSED LOOP CONTROL)
The mixture ratio feedback system provides the best air-fuel mixture ratio for driveability and emission control.
The three way catalyst (manifold) can then better reduce CO, HC and NOx emissions. This system uses
heated oxygen sensor 1 in the exhaust manifold to monitor whether the engine operation is rich or lean. The
ECM adjusts the injection pulse width according to the sensor voltage signal. For more information about
heated oxygen sensor 1, refer to EC-176
. This maintains the mixture ratio within the range of stoichiometric
(ideal air-fuel mixture).
This stage is referred to as the closed loop control condition.
Heated oxygen sensor 2 is located downstream of the three way catalyst (manifold). Even if the switching
characteristics of heated oxygen sensor 1 shift, the air-fuel ratio is controlled to stoichiometric by the signal
from heated oxygen sensor 2.
Open Loop Control
The open loop system condition refers to when the ECM detects any of the following conditions. Feedback
control stops in order to maintain stabilized fuel combustion.

Deceleration and acceleration

High-load, high-speed operation

Malfunction of heated oxygen sensor 1 or its circuit

Insufficient activation of heated oxygen sensor 1 at low engine coolant temperature

High engine coolant temperature

During warm-up

After shifting from N to D (A/T models)
PBIB0121E

ENGINE CONTROL SYSTEM
EC-37
[QR (WITH EURO-OBD)]
C
D
E
F
G
H
I
J
K
L
MA
EC

Electronic Ignition (EI) SystemEBS010LA
INPUT/OUTPUT SIGNAL CHART
*1: This signal is sent to the ECM through CAN communication line.
*2: ECM determines the start signal status by the signals of engine speed and battery voltage.
SYSTEM DESCRIPTION
The ignition timing is controlled by the ECM to maintain the best air-
fuel ratio for every running condition of the engine. The ignition tim-
ing data is stored in the ECM. This data forms the map shown.
The ECM receives information such as the injection pulse width and
camshaft position sensor signal. Computing this information, ignition
signals are transmitted to the power transistor.
e.g., N: 1,800 rpm, Tp: 1.50 msec
A °BTDC
During the following conditions, the ignition timing is revised by the
ECM according to the other data stored in the ECM.

At starting

During warm-up

At idle

At low battery voltage

During acceleration
The knock sensor retard system is designed only for emergencies. The basic ignition timing is programmed
within the anti-knocking zone, if recommended fuel is used under dry conditions. The retard system does not
operate under normal driving conditions. If engine knocking occurs, the knock sensor monitors the condition.
The signal is transmitted to the ECM. The ECM retards the ignition timing to eliminate the knocking condition.
Air Conditioning Cut ControlEBS010LB
INPUT/OUTPUT SIGNAL CHART
*1: This signal is sent to the ECM through CAN communication line.
*2: ECM determines the start signal status by the signals of engine speed and battery voltage.Sensor Input Signal to ECMECM func-
tionActuator
Crankshaft position sensor (POS)
Engine speed*
2
piston position
Ignition
timing con-
trolPower transistor Camshaft position sensor (PHASE)
Mass air flow sensor Amount of intake air
Engine coolant temperature sensor Engine coolant temperature
Throttle position sensor Throttle position
Accelerator pedal position sensor Accelerator pedal position
Knock sensor Engine knocking
Park/neutral position (PNP) switch Gear position
Battery
Battery voltage*
2
Wheel sensor*1Vehicle speed
SEF742M
Sensor Input Signal to ECM ECM function Actuator
Air conditioner switch Air conditioner ON signal
Air conditioner
cut controlAir conditioner relay Throttle position sensor Throttle valve opening angle
Crankshaft position sensor (POS)
Camshaft position sensor (PHASE)Engine speed*
2
Engine coolant temperature sensor Engine coolant temperature
Battery
Battery voltage*
2
Refrigerant pressure sensor Refrigerant pressure
Power steering pressure sensor Power steering operation
Wheel sensor*
1Vehicle speed

EC-46
[QR (WITH EURO-OBD)]
BASIC SERVICE PROCEDURE

3. Turn ignition switch OFF and wait at least 10 seconds.
4. Turn ignition switch ON and wait at least 2 seconds.
5. Turn ignition switch OFF and wait at least 10 seconds.
Throttle Valve Closed Position LearningEBS010LG
DESCRIPTION
Throttle Valve Closed Position Learning is an operation to learn the fully closed position of the throttle valve by
monitoring the throttle position sensor output signal. It must be performed each time harness connector of
electric throttle control actuator or ECM is disconnected.
OPERATION PROCEDURE
1. Make sure that accelerator pedal is fully released.
2. Turn ignition switch ON.
3. Turn ignition switch OFF and wait at least 10 seconds.
Make sure that throttle valve moves during above 10 seconds by confirming the operating sound.
Idle Air Volume LearningEBS010LH
DESCRIPTION
Idle Air Volume Learning is an operation to learn the idle air volume that keeps each engine within the specific
range. It must be performed under any of the following conditions:

Each time electric throttle control actuator or ECM is replaced.

Idle speed or ignition timing is out of specification.
PREPARATION
Before performing Idle Air Volume Learning, make sure that all of the following conditions are satisfied.
Learning will be cancelled if any of the following conditions are missed for even a moment.

Battery voltage: More than 12.9V (At idle)

Engine coolant temperature: 70 - 95°C (158 - 203°F)

PNP switch: ON

Electric load switch: OFF
(Air conditioner, headlamp, rear window defogger)
On vehicles equipped with daytime light systems, set lighting switch to the 1st position to light
only small lamps.

Steering wheel: Neutral (Straight-ahead position)

Vehicle speed: Stopped

Transmission: Warmed-up
For A/T models with CONSULT-II, drive vehicle until “FLUID TEMP SE” in “DATA MONITOR” mode of “A/
T” system indicates less than 0.9V.
For A/T models without CONSULT-II and M/T models, drive vehicle for 10 minutes.
OPERATION PROCEDURE
With CONSULT-II
1. Perform EC-45, "Accelerator Pedal Released Position Learning" .
2. Perform EC-46, "
Throttle Valve Closed Position Learning" .
3. Start engine and warm it up to normal operating temperature.
4. Check that all items listed under the topic PREPARATION (previously mentioned) are in good order.
5. Select “IDLE AIR VOL LEARN” in “WORK SUPPORT” mode.
SEF217Z