Almera Tino V10 (2003 year). Manual

DTC P2146, P2149 FUEL INJECTOR POWER SUPPLY

EC-1483

[YD (WITHOUT EURO-OBD)]

: Average voltage for pulse signal (Actual pulse signal can be confirmed by oscilloscope.)

On Board Diagnosis Logic

EBS0150P

21
22
23
24

L
PU/W
L
PU/W

Fuel injector No. 2
Fuel injector No. 2
Fuel injector No. 3
Fuel injector No. 3

[Engine is running]

●

Warm-up condition

●

Idle speed

0 - 9V

[Engine is running]

●

Warm-up condition

●

Engine speed is 2,000 rpm

0 - 9V

40
41
42
43

B/P
PU/W
B/P
PU/W

Fuel injector No. 4
Fuel injector No. 4
Fuel injector No. 1
Fuel injector No. 1

[Engine is running]

●

Warm-up condition

●

Idle speed

0 - 9V

[Engine is running]

●

Warm-up condition

●

Engine speed is 2,000 rpm

0 - 9V

TERMI-

NAL

NO.

WIRE

COLOR

ITEM

CONDITION

DATA

(DC Voltage and Pulse Signal)

MBIB0881E

MBIB0882E

MBIB0881E

MBIB0882E

DTC No.

Trouble diagnosis name

DTC detecting condition

Possible cause

P2146

No. 1 and 4 cylinder fuel injector
power supply circuit open

An improper voltage signal is sent to ECM
through No. 1 and 4 cylinder fuel injector.

●

Harness or connectors
(The fuel injector circuit is open.)

P2149

No. 2 and 3 cylinder fuel injector
power supply circuit open

An improper voltage signal is sent to ECM
through No. 2 and 3 cylinder fuel injector.

EC-1484

[YD (WITHOUT EURO-OBD)]

DTC P2146, P2149 FUEL INJECTOR POWER SUPPLY

DTC Confirmation Procedure

EBS0150Q

NOTE:
If DTC Confirmation Procedure has been previously conducted, always turn ignition switch OFF and wait at
least 10 seconds before conducting the next test.
TESTING CONDITION
Before performing the following procedure, confirm the ambient temperature is more than -20

C (-4

F).

WITH CONSULT-II

Turn ignition switch ON.

Select “DATA MONITOR” mode with CONSULT-II.

Start engine and let it idle for at least 5 seconds.

If DTC is detected, go to

EC-1486, "Diagnostic Procedure"

SEF817Y

EC-1486

[YD (WITHOUT EURO-OBD)]

DTC P2146, P2149 FUEL INJECTOR POWER SUPPLY

Diagnostic Procedure

EBS0150S

CHECK FUEL INJECOR POWER CIRCUIT FOR OPEN AND SHORT

Turn ignition switch OFF.

Disconnect fuel injector harness connector.

Disconnect ECM harness connector.

Check harness continuity between the following terminals corre-
sponding to the malfunctioning cylinder.
Refer to Wiring Diagram.

Also check harness for short to ground and short to power.

OK or NG

>> GO TO 2.

>> Repair open circuit or short to ground or short to power in harness or connectors.

CHECK INTERMITTENT INCIDENT

Refer to

EC-1309, "TROUBLE DIAGNOSIS FOR INTERMITTENT INCIDENT"

>> INSPECTION END

Terminal

Cylinder

ECM

Fuel injector

No.1

No.2

No.3

No.4

Continuity should exist.

MBIB0635E

DTC P2147, P2148 FUEL INJECTOR CIRCUIT

EC-1487

[YD (WITHOUT EURO-OBD)]

DTC P2147, P2148 FUEL INJECTOR CIRCUIT

PFP:16600

Component Description

EBS0150T

The fuel injector is a small, precise solenoid valve. When the ECM
supplies a ground to the fuel injector circuit, the coil in the fuel injec-
tor is energized. The energized coil pulls the needle valve back and
allows fuel to flow through the fuel injector into the intake cylinder.
The amount of fuel injected depends upon the injection pulse dura-
tion. Pulse duration is the length of time the fuel injector remains
open. The ECM controls the injection pulse duration based on
engine fuel needs.

CONSULT-II Reference Value in Data Monitor Mode

EBS0150U

Specification data are reference values.

ECM Terminals and Reference Value

EBS0150V

Specification data are reference values and are measured between each terminal and ground.
Pulse signal is measured by CONSULT-II.

CAUTION:

Do not use ECM ground terminals when measuring input/output voltage. Doing so may result in dam-
age to the ECM's transistor. Use a ground other than ECM terminals, such as the ground.

PBIB0465E

MONITOR ITEM

CONDITION

SPECIFICATION

MAIN INJ WID

●

Engine: After warming up

●

Shift lever: Neutral position

●

Idle speed

No-load

0.68 - 0.78 msec

Blower fan switch: ON
Rear window defogger switch: ON

0.78 - 0.88 msec

TERMI-

NAL

NO.

WIRE

COLOR

ITEM

CONDITION

DATA

(DC Voltage and Pulse Signal)

O/B

Fuel injector power supply
(For cylinder No. 1 and 4)
Fuel injector power supply
(For cylinder No. 2 and 3)

[Engine is running]

●

Warm-up condition

●

Idle speed

5 - 10V

[Engine is running]

●

Warm-up condition

●

Engine speed is 2,000 rpm

5 - 10V

MBIB0883E

MBIB0884E

EC-1488

[YD (WITHOUT EURO-OBD)]

DTC P2147, P2148 FUEL INJECTOR CIRCUIT

: Average voltage for pulse signal (Actual pulse signal can be confirmed by oscilloscope.)

On Board Diagnosis Logic

EBS0150W

21
22
23
24

L
PU/W
L
PU/W

Fuel injector No. 2
Fuel injector No. 2
Fuel injector No. 3
Fuel injector No. 3

[Engine is running]

●

Warm-up condition

●

Idle speed

0 - 9V

[Engine is running]

●

Warm-up condition

●

Engine speed is 2,000 rpm

0 - 9V

40
41
42
43

B/P
PU/W
B/P
PU/W

Fuel injector No. 4
Fuel injector No. 4
Fuel injector No. 1
Fuel injector No. 1

[Engine is running]

●

Warm-up condition

●

Idle speed

0 - 9V

[Engine is running]

●

Warm-up condition

●

Engine speed is 2,000 rpm

0 - 9V

TERMI-

NAL

NO.

WIRE

COLOR

ITEM

CONDITION

DATA

(DC Voltage and Pulse Signal)

MBIB0881E

MBIB0882E

MBIB0881E

MBIB0882E

DTC No.

Trouble diagnosis name

DTC detecting condition

Possible cause

P2147

Fuel injector circuit low input

ECM detects the fuel injector circuit is shorted to
ground.

●

Harness or connectors
(The fuel injector circuit is shorted.)

P2148

Fuel injector circuit high input

ECM detects the fuel injector circuit is shorted to
power.

DTC P2147, P2148 FUEL INJECTOR CIRCUIT

EC-1489

[YD (WITHOUT EURO-OBD)]

DTC Confirmation Procedure

EBS0150X

NOTE:
If DTC Confirmation Procedure has been previously conducted, always turn ignition switch OFF and wait at
least 10 seconds before conducting the next test.

WITH CONSULT-II

Turn ignition switch ON.

Select “DATA MONITOR” mode with CONSULT-II.

Start engine and let it idle for at least 5 seconds.

If DTC is detected, go to

EC-1491, "Diagnostic Procedure"

SEF817Y

DTC P2147, P2148 FUEL INJECTOR CIRCUIT

EC-1491

[YD (WITHOUT EURO-OBD)]

Diagnostic Procedure

EBS0150Z

CHECK GROUND CONNECTIONS

Turn ignition switch OFF.

Loosen and retighten body ground screw. Refer to

EC-1317,

"Ground Inspection"

OK or NG

>> GO TO 2.

>> Repair or replace ground connection.

CHECK ECM OUTPUT SIGNAL CIRCUIT FOR OPEN OR SHORT

Disconnect fuel injector harness connector.

Disconnect ECM harness connector.

Check harness continuity between the following terminals corre-
sponding to the malfunctioning cylinder.
Refer to Wiring Diagram.

Also check harness for short to ground and short to power.

OK or NG

>> GO TO 3.

>> Repair or replace.

CHECK FUEL INJECTOR

Refer to

EC-1492, "Component Inspection"

OK or NG

>> GO TO 4.

>> Replace fuel injector.

MBIB0915E

Cylinder

Terminal

Continuity

Fuel injector

ECM

No.1

42, 43

Should not exist

Should exist

42,43

Should exist

Should not exist

No.2

21, 22

Should not exist

Should exist

21, 22

Should exist

Should not exist

No.3

23, 24

Should not exist

Should exist

23, 24

Should exist

Should not exist

No.4

40, 41

Should not exist

Should exist

40, 41

Should exist

Should not exist

MBIB0635E

EC-1492

[YD (WITHOUT EURO-OBD)]

DTC P2147, P2148 FUEL INJECTOR CIRCUIT

CHECK INTERMITTENT INCIDENT

Refer to

EC-1309, "TROUBLE DIAGNOSIS FOR INTERMITTENT INCIDENT"

>> INSPECTION END

Component Inspection

EBS01510

FUEL INJECTOR

Disconnect fuel injector.

Check continuity between terminals as shown in the figure.

If NG, replace fuel injector.

Removal and Installation

EBS01511

FUEL INJECTOR

Refer to

EM-147, "INJECTION TUBE AND FUEL INJECTOR"

Continuity should exist.

PBIB0406E

DTC P2228, P2229 BARO SENSOR

EC-1493

[YD (WITHOUT EURO-OBD)]

DTC P2228, P2229 BARO SENSOR

PFP:23731

Description

EBS01512

The barometric pressure sensor is built into ECM. The sensor
detects ambient barometric pressure and sends the voltage signal to
the microcomputer.

On Board Diagnosis Logic

EBS01513

The MI will not light up for these self-diagnoses.

DTC Confirmation Procedure

EBS01514

NOTE:
If DTC Confirmation Procedure has been previously conducted, always turn ignition switch OFF and wait at
least 10 seconds before conducting the next test.

WITH CONSULT-II

Turn ignition switch ON.

Select “DATA MONITOR” mode with CONSULT-II.

Wait at least 5 seconds.

If DTC is detected, go to

EC-1493, "Diagnostic Procedure"

Diagnostic Procedure

EBS01515

INSPECTION START

With CONSULT-II

Turn ignition switch ON.

Select “SELF DIAG RESULTS” mode with CONSULT-II.

Touch “ERASE”.

Perform

EC-1493, "DTC Confirmation Procedure"

, again.

Is DTC P2228 or P2229 displayed again?

Yes or No

Yes

>> GO TO 2.

>> INSPECTION END

MBIB0625E

DTC No.

Trouble diagnosis name

DTC detecting condition

Possible cause

P2228

Barometric pressure sensor
circuit low input

An excessively low voltage from the barometric
pressure sensor (built-into ECM) is sent to ECM.

●

ECM

P2229

Barometric pressure sensor
circuit high input

An excessively high voltage from the barometric
pressure sensor (built-into ECM) is sent to ECM.

SEF058Y

GLOW CONTROL SYSTEM

EC-1495

[YD (WITHOUT EURO-OBD)]

GLOW CONTROL SYSTEM

PFP:25230

Description

EBS01516

SYSTEM DESCRIPTION

When engine coolant temperature is more than approximately 80

C (176

F), the glow relay turns off.

When coolant temperature is lower than approximately 80

C (176

F):

●

Ignition switch ON
After ignition switch has turned to ON, the glow relay turns ON for a certain period of time in relation to
engine coolant temperature, allowing current to flow through glow plug.

●

Cranking
The glow relay turns ON, allowing current to flow through glow plug.

●

Starting
After engine has started, current continues to flow through glow plug (after-glow mode) for a certain period
in relation to engine coolant temperature.

The glow indicator lamp turns ON for a certain period of time in relation to engine coolant temperature at the
time glow relay is turned ON.

COMPONENT DESCRIPTION
Glow Plug

The glow plug is provided with a ceramic heating element to obtain a
high-temperature resistance. It glows in response to a signal sent
from the ECM, allowing current to flow through the glow plug via the
glow relay.

Sensor

Input Signal to ECM

ECM Function

Actuator

Crankshaft position sensor

Engine speed

Glow control

Glow lamp
Glow relay
Glow plugs

Engine coolant temperature sensor

Engine coolant temperature

SEF376Y

GLOW CONTROL SYSTEM

EC-1497

[YD (WITHOUT EURO-OBD)]

Diagnostic Procedure

EBS01518

INSPECTION START

Check fuel level, fuel supplying system, starter motor, etc.
OK or NG

>> GO TO 2.

>> Correct.

CHECK INSTALLATION

Check that glow plug nut and all glow plug connecting plate nuts are
installed properly.
OK or NG

>> GO TO 3.

>> Install properly.

CHECK GLOW INDICATOR LAMP OPERATION

With CONSULT-II

Turn ignition switch ON.

Select “COOLAN TEMP/S” in “DATA MONITOR” mode with
CONSULT-II.

Confirm that “COOLAN TEMP/S” indicates below 80

C (176

F).

If it indicates above 80

C (176

F), cool down engine.

Turn ignition switch OFF, wait at least 10 seconds and then turn
ON.

Make sure that glow indicator lamp is turned ON for 1.5 seconds
or more after turning ignition switch ON, and then glow indicator
lamp turned OFF.

OK or NG

>> GO TO 4.

>> GO TO 5.

MBIB0633E

SEF013Y

EC-1498

[YD (WITHOUT EURO-OBD)]

GLOW CONTROL SYSTEM

CHECK GLOW CONTROL SYSTEM OVERALL FUNCTION

With CONSULT-II

Select “COOLAN TEMP/S” in “DATA MONITOR” mode with
CONSULT-II.

Confirm that “COOLAN TEMP/S” indicates approximately 25

(77

F). If NG, cool down engine.

Turn ignition switch OFF.

Set voltmeter probe between glow plug and engine body.

Turn ignition switch ON.

Check the voltage between glow plug and engine body under
the following conditions.

OK or NG

>> INSPECTION END

>> GO TO 7.

CHECK DTC

Check that DTC U1000 is not displayed.
Yes or No

Yes

>> Perform trouble diagnoses for DTC U1000, refer to

EC-1318, "DTC U1000 CAN COMMUNICA-

TION LINE"

>> GO TO 6.

CHECK COMBINATON METER OPERATION

Does combination meter operate normally?
Yes or No

Yes

>> GO TO 14.

>> Check warning lamps circuit. Refer to EL-115, “WARNING LAMPS”.

SEF013Y

Conditions

Voltage

For 20 seconds after turning ignition switch ON

Battery voltage

More than 20 seconds after turning ignition switch ON

Approx. 0V

MBIB0632E

Almera Tino V10 (2003 year). Manual - part 154