Content .. 96 97 98 99 ..

Nissan Almera Tino V10 (2001 year). Manual - part 98

SEF396Y

ECM Terminals and Reference Value

NLEC0636

PREPARATION

NLEC0636S01

Models with ECM in engine compartment

NLEC0636S0101

ECM is located under the cowl panel (behind the strut tower).
For the inspection, perform the following procedure.

SEF322Y

Remove the engine control harness fixing clips.

SEF323Y

Remove the ventilation hose.

To release the lock, push the quick connector.

SEF324Y

Remove the ECM cover mounting bolts, then remove the ECM
cover from the vehicle.

: 4.0 - 7.8 N·m (0.4 - 0.8 kg-m, 35 - 69 in-lb)

Remove the ECM cover bolts, then open the ECM cover.

: 4.0 - 6.8 N·m (0.4 - 0.7 kg-m, 35 - 60 in-lb)

Remove the ECM bolts.

: 4.2 - 6.7 N·m (0.42 - 0.69 kg-m, 37 - 59 in-lb)

Install in the reverse order of removal.

SEF289H

Disconnect negative battery terminal.

TROUBLE DIAGNOSIS — GENERAL DESCRIPTION

YD22DDTI

ECM Terminals and Reference Value

EC-1129

SEF883Y

Connect a break out box (SST) between the ECM and ECM
harness connectors.

Use extreme care not to touch 2 pins at one time.

Data is for comparison and may not be exact.

Be sure ECM unit is properly grounded before checking.

SEF289H

Models with ECM in cabin

NLEC0636S0102

ECM is locating beside of blower unit.
1.

Remove the ECM bracket fixing.

Remove ECM harness protector.

Disconnect negative battery terminal.

SEF883Y

Connect a break out box (SST) between the ECM and ECM
harness connectors.

Use extreme care not to touch 2 pins at one time.

Data is for comparison and may not be exact.

Be sure ECM unit is properly grounded before checking.

ECM INSPECTION TABLE

NLEC0636S03

Remarks: Specification data are reference values and are mea-
sured between each terminal and ground.

CAUTION:

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

TERMI-

NAL

NO.

WIRE

COLOR

ITEM

CONDITION

DATA (DC Voltage and Pulse

Signal)

104
105
106

B
B
B

ECM ground

[Engine is running]

Idle speed

Approximately 0V

107
108
109

R
R
R

Power supply for ECM

[Ignition switch “ON”]

BATTERY VOLTAGE
(11 - 14V)

TROUBLE DIAGNOSIS — GENERAL DESCRIPTION

YD22DDTI

ECM Terminals and Reference Value (Cont’d)

EC-1130

TERMI-

NAL

NO.

WIRE

COLOR

ITEM

CONDITION

DATA (DC Voltage and Pulse

Signal)

204

Air conditioner relay

[Engine is running]

Air conditioner switch is “OFF”

BATTERY VOLTAGE
(11 - 14V)

[Engine is running]

Both air conditioner switch and blower fan
switch are “ON”
(Compressor is operating)

Approximately 0.1V

209

G/W

Swirl control valve con-
trol solenoid valve

[Engine is running.]

Warm-up condition

Engine speed: 1,500 rpm

No load

Approximately 0.1V

[Engine is running.]

Idle speed

BATTERY VOLTAGE
(11 - 14V)

214

W/B

Glow relay

Refer to “Glow Control System”, EC-1267.

218

Sensors’ ground

[Engine is running]

Warm-up condition

Idle speed

Approximately 0V

219

LG/R

Cooling fan relay (Low)

[Engine is running]

Cooling fan is not operating

BATTERY VOLTAGE
(11 - 14V)

[Engine is running]

Cooling fan is operating

Approximately 0.1V

221

LG/B

Cooling fan relay (High)

[Engine is running]

Cooling fan is not operating

Cooling fan is operating at low speed

BATTERY VOLTAGE
(11 - 14V)

[Engine is running]

Cooling fan is operating at high speed

Approximately 0.1V

223

Mass air flow sensor
power supply

[Ignition switch “ON”]

Approximately 5V

224

Mass air flow sensor

[Engine is running]

Warm-up condition

Idle speed

1.5 - 2.0V

313

L/W

Electronic control fuel
injection pump

[Engine is running]

Warm-up condition

Idle speed

Approximately 0.1V

314

L/R

Electronic control fuel
injection pump

[Engine is running]

Warm-up condition

Idle speed

Approximately 0.4V

316

Electronic control fuel
injection pump

[Engine is running]

Warm-up condition

Idle speed

Approximately 2.5V

317

Electronic control fuel
injection pump

[Engine is running]

Warm-up condition

Idle speed

Approximately 2.5V

325

ECM relay (Self-shutoff)

[Ignition switch “ON”]
[Ignition switch “OFF”]

For a few seconds after turning ignition switch
“OFF”

Approximately 0.25V

[Ignition switch “OFF”]

A few seconds passed after turning ignition
switch “OFF”

BATTERY VOLTAGE
(11 - 14V)

TROUBLE DIAGNOSIS — GENERAL DESCRIPTION

YD22DDTI

ECM Terminals and Reference Value (Cont’d)

EC-1131

TERMI-

NAL

NO.

WIRE

COLOR

ITEM

CONDITION

DATA (DC Voltage and Pulse

Signal)

331

Crankshaft position sen-
sor (TDC) ground

[Engine is running]

Warm-up condition

Idle speed

Approximately 0V

334

B/R

Engine coolant tem-
perature sensor ground

[Ignition switch “ON”]

Approximately 0V

337
338
350
351

W/L
PU/W
GY
OR/B

EGR volume control
valve

[Engine is running]

Warm-up condition

Idle speed

0.1 - 14V
(Voltage signals of each ECM
terminals differ according to
the control position of EGR
volume control valve.)

344

Crankshaft position sen-
sor (TDC)

[Engine is running]

Warm-up condition

Idle speed

Approximately 0V

SEF333Y

[Engine is running]

Warm-up condition

Engine speed is 2,000 rpm

Approximately 0V

SEF334Y

347

L/B

Engine coolant tem-
perature sensor

[Engine is running]

Approximately 0 - 4.8V
Output voltage varies with
engine coolant temperature

403

R/L

Air conditioner switch

[Engine is running]

Air conditioner switch is “OFF”

BATTERY VOLTAGE
(11 - 14V)

[Engine is running]

Both air conditioner switch and blower fan
switch are “ON”
(Compressor is operating)

Approximately 0.1V

405

R/G

Stop lamp switch

[Ignition switch “ON”]

Brake pedal fully released

Approximately 0V

[Ignition switch “ON”]

Brake pedal depressed

BATTERY VOLTAGE
(11 - 14V)

416

Y/B

Brake pedal position
switch

[Ignition switch “ON”]

Brake pedal fully released

BATTERY VOLTAGE
(11 - 14V)

[Ignition switch “ON”]

Brake pedal depressed

Approximately 0V

TROUBLE DIAGNOSIS — GENERAL DESCRIPTION

YD22DDTI

ECM Terminals and Reference Value (Cont’d)

EC-1132

TERMI-

NAL

NO.

WIRE

COLOR

ITEM

CONDITION

DATA (DC Voltage and Pulse

Signal)

417

PU/R

Vehicle speed sensor

[Engine is running]

Lift up the vehicle

In 1st gear position

Vehicle speed is 10 km/h (6 MPH)

0 - Approximately 8V

SEF891Y

[Engine is running]

Lift up the vehicle

In 2nd gear position

Vehicle speed is 30 km/h (19 MPH)

Approximately 6V

SEF892Y

418

G/OR

Park/Neutral position
switch
(where fitted)

[Ignition switch “ON”]

Gear position is “Neutral”

Approximately 0V

[Ignition switch “ON”]

Except the above gear position

BATTERY VOLTAGE
(11 - 14V)

422

B/Y

Start signal

[Ignition switch “ON”]

Approximately 0V

[Ignition switch “START”]

BATTERY VOLTAGE
(11 - 14V)

425

P/B

Accelerator position
sensor ground

[Engine is running]

Warm-up condition

Idle speed

Approximately 0V

426

BR/R

Accelerator position
switch (Idle) ground

[Ignition switch “ON”]

Approximately 0V

433

G/Y

Accelerator position
sensor power supply

[Ignition switch “ON”]

Approximately 5V

434

Accelerator position
sensor

[Ignition switch “ON”]

Accelerator pedal fully released

0.30 - 0.50V

[Ignition switch “ON”]

Accelerator pedal fully depressed

3.0 - 4.3V

435

W/G

Accelerator position
switch (Idle)

[Ignition switch “ON”]

Accelerator pedal fully released

Approximately 0V

[Ignition switch “ON”]

Accelerator pedal depressed

BATTERY VOLTAGE
(11 - 14V)

TROUBLE DIAGNOSIS — GENERAL DESCRIPTION

YD22DDTI

ECM Terminals and Reference Value (Cont’d)

EC-1133

TERMI-

NAL

NO.

WIRE

COLOR

ITEM

CONDITION

DATA (DC Voltage and Pulse

Signal)

439

L/OR

Tachometer

[Engine is running]

Warm-up condition

Idle speed

Approximately 4.8V

SEF325Y

[Engine is running]

Warm-up condition

Engine speed is 2,000 rpm

Approximately 4.6V

SEF326Y

505

OR/L

Malfunction indicator

[Ignition switch “ON”]

Approximately 1V

[Engine is running]

Idle speed

BATTERY VOLTAGE
(11 - 14V)

507

W/R

Ignition switch

[Ignition switch “OFF”]

[Ignition switch “ON”]

BATTERY VOLTAGE
(11 - 14V)

508

Glow lamp

[Ignition switch “ON”]

Glow lamp is “ON”

Approximately 1V

[Ignition switch “ON”]

Glow lamp is “OFF”

BATTERY VOLTAGE
(11 - 14V)

TROUBLE DIAGNOSIS — GENERAL DESCRIPTION

YD22DDTI

ECM Terminals and Reference Value (Cont’d)

EC-1134

Description

NLEC0637

Intermittent incidents (I/I) may occur. In many cases, the problem resolves itself (the part or circuit function
returns to normal without intervention). It is important to realize that the symptoms described in the custom-
er’s complaint often do not recur on DTC visits. Realize also that the most frequent cause of I/I occurrences
is poor electrical connections. Because of this, the conditions under which the incident occurred may not be
clear. Therefore, circuit checks made as part of the standard diagnostic procedure may not indicate the spe-
cific problem area.

COMMON I/I REPORT SITUATIONS

NLEC0637S01

STEP in Work Flow

Situation

The CONSULT-II is used. The SELF-DIAG RESULTS screen shows time data other than “0”.

III

The symptom described by the customer does not recur.

DTC does not appear during the DTC Confirmation Procedure.

The Diagnostic Procedure for XXXX does not indicate the problem area.

Diagnostic Procedure

NLEC0638

INSPECTION START

Erase DTCs. Refer to “HOW TO ERASE DTC”, EC-1096.

GO TO 2.

CHECK GROUND TERMINALS

Check ground terminals for corroding or loose connection.
Refer to GI-27, “GROUND INSPECTION”.

OK or NG

GO TO 3.

Repair or replace.

SEARCH FOR ELECTRICAL INCIDENT

Perform GI-22, “Incident Simulation Tests”.

OK or NG

INSPECTION END

Repair or replace.

TROUBLE DIAGNOSIS FOR INTERMITTENT INCIDENT

YD22DDTI

Description

EC-1135

Main Power Supply and Ground Circuit

ECM TERMINALS AND REFERENCE VALUE

NLEC0639

Remarks: Specification data are reference values and are measured between each terminal and ground.

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.

TERMI-

NAL

NO.

WIRE

COLOR

ITEM

CONDITION

DATA(DC Voltage)

104
105
106

B
B
B

ECM ground

[Engine is running]

Idle speed

Approximately 0V

107
108
109

R
R
R

Power supply for ECM

[Ignition switch “ON”]

BATTERY VOLTAGE
(11 - 14V)

325

ECM relay (Self-shutoff)

[Ignition switch “ON”]
[Ignition switch “OFF”]

For a few seconds after turning ignition switch
“OFF”

Approximatley 0.25V

[Ignition switch “OFF”]

A few seconds passed after turning ignition
switch “OFF”

BATTERY VOLTAGE
(11 - 14V)

507

W/R

Ignition switch

[Ignition switch “OFF”]

[Ignition switch “ON”]

BATTERY VOLTAGE
(11 - 14V)

TROUBLE DIAGNOSIS FOR POWER SUPPLY

YD22DDTI

Main Power Supply and Ground Circuit

EC-1136

WIRING DIAGRAM (MODELS WITH ECM IN ENGINE COMPARTMENT)

NLEC0640

YEC721

TROUBLE DIAGNOSIS FOR POWER SUPPLY

YD22DDTI

Main Power Supply and Ground Circuit (Cont’d)

EC-1137

WIRING DIAGRAM (MODELS WITH ECM IN CABIN)

NLEC1932

YEC857

TROUBLE DIAGNOSIS FOR POWER SUPPLY

YD22DDTI

Main Power Supply and Ground Circuit (Cont’d)

EC-1138

DIAGNOSTIC PROCEDURE

NLEC0641

INSPECTION START

Start engine.
Is engine running?

Yes or No

Yes

GO TO 11.

GO TO 2.

CHECK ECM POWER SUPPLY CIRCUIT-I

1. Turn ignition switch “ON”.
2. Check voltage between ECM terminal 507 and ground with CONSULT-II or tester.

SEF895Y

OK or NG

GO TO 4.

GO TO 3.

DETECT MALFUNCTIONING PART

Check the following.

Harness connectors M50, F24 (where fitted)

Harness connectors M72, F44 (where fitted)

Fuse block (J/B) connector M1

10A fuse

Harness for open or short between ECM and fuse

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

CHECK ECM GROUND CIRCUIT FOR OPEN AND SHORT

1. Turn ignition switch “OFF”.
2. Disconnect ECM harness connector.
3. Check harness continuity between ECM terminals 104, 105, 106 and engine ground. Refer to Wiring Diagram.

Continuity should exist.

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

OK or NG

GO TO 5.

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

TROUBLE DIAGNOSIS FOR POWER SUPPLY

YD22DDTI

Main Power Supply and Ground Circuit (Cont’d)

EC-1139

CHECK ECM POWER SUPPLY CIRCUIT-II

1. Reconnect ECM harness connector.
2. Turn ignition switch “ON” and then “OFF”.
3. Check voltage between ECM terminals 107, 108, 109 and ground with CONSULT-II or tester.

SEF896Y

OK or NG

Check electronic control fuel injection pump power supply circuit. Refer to “Diagnostic
Procedure”, EC-1251.

NG (Battery voltage
does not exist.)

GO TO 6.

NG (Battery voltage
exists for more than a
few seconds.)

GO TO 10.

CHECK ECM POWER SUPPLY CIRCUIT-III

1. Disconnect ECM relay. (For ECM relay location, refer to “Engine control component parts location”, EC-1071.)
2. Check voltage between relay terminals 1, 6 and ground with CONSULT-II or tester.

SEF399Y

OK or NG

GO TO 8.

GO TO 7.

DETECT MALFUNCTIONING PART

Check the following.

Harness connectors E76, F13 (where fitted)

10A fuse

20A fuse

Harness for open or short between ECM relay and battery

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

TROUBLE DIAGNOSIS FOR POWER SUPPLY

YD22DDTI

Main Power Supply and Ground Circuit (Cont’d)

EC-1140

CHECK OUTPUT SIGNAL CIRCUIT FOR OPEN AND SHORT

1. Disconnect ECM harness connector.
2. Check harness continuity between ECM terminal 325 and ECM relay terminal 2. Refer to Wiring Diagram.

Continuity should exist.

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

OK or NG

GO TO 9.

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

CHECK ECM POWER SUPPLY CIRCUIT-IV

1. Check harness continuity between ECM terminals 107, 108, 109 and ECM relay terminal 7. Refer to Wiring Diagram.

Continuity should exist.

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

OK or NG

GO TO 10.

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

CHECK ECM RELAY

1. Apply 12V direct current between ECM relay terminals 1 and 2.
2. Check continuity between ECM relay terminals 3 and 5, 7 and 6.

SEF296X

OK or NG

GO TO 13.

Replace ECM relay.

CHECK ECM POWER SUPPLY CIRCUIT-V

1. Turn ignition switch “OFF”.
2. Disconnect ECM relay. (For ECM relay location, refer to “Engine control component parts location”, EC-1071.)
3. Disconnect ECM harness connector.
4. Check harness continuity between ECM terminals 107, 108, 109 and ECM relay terminal 7. Refer to Wiring Diagram.

Continuity should exist.

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

OK or NG

GO TO 12.

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

TROUBLE DIAGNOSIS FOR POWER SUPPLY

YD22DDTI

Main Power Supply and Ground Circuit (Cont’d)

EC-1141

CHECK ECM GROUND CIRCUIT FOR OPEN AND SHORT

1. Check harness continuity between ECM terminals 104, 105, 106 and engine ground. Refer to Wiring Diagram.

Continuity should exist.

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

OK or NG

GO TO 13.

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

CHECK INTERMITTENT INCIDENT

Refer to “TROUBLE DIAGNOSIS FOR INTERMITTENT INCIDENT”, EC-1135.

INSPECTION END

TROUBLE DIAGNOSIS FOR POWER SUPPLY

YD22DDTI

Main Power Supply and Ground Circuit (Cont’d)

EC-1142

SEF987W

Component Description

NLEC0642

The mass air flow sensor (MAFS) is placed in the stream of intake
air. It measures the intake air flow rate by measuring a part of the
entire intake air flow. It consists of a hot film that is supplied with
electric current from the ECM. The temperature of the hot film is
controlled by the ECM a certain amount. The heat generated by the
hot film is reduced as the intake air flows around it. The more air,
the greater the heat loss.
Therefore, the ECM must supply more electric current to maintain
the temperature of the hot film as air flow increases. The ECM
detects the air flow by means of this current change.

CONSULT-II Reference Value in Data Monitor
Mode

NLEC0643

Specification data are reference values.

MONITOR ITEM

CONDITION

SPECIFICATION

MAS AIR/FL SE

Engine: After warming up

Air conditioner switch: “OFF”

Shift lever: Neutral position

No-load

Idle

1.5 - 2.0V

ECM Terminals and Reference Value

NLEC0644

Specification data are reference values, and are measured between each terminal and ground.

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.

TER-

MINAL

NO.

WIRE

COLOR

ITEM

CONDITION

DATA (DC Voltage)

218

Sensor’s ground

[Engine is running]

Warm-up condition

Idle speed

Approximately 0V

223

Mass air flow sensor
power supply

[Ignition switch “ON”]

Approximately 5V

224

Mass air flow sensor

[Engine is running]

Warm-up condition

Idle speed

1.5 - 2.0V

On Board Diagnosis Logic

NLEC0645

DTC

Malfunction is detected when ...

Check Items (Possible Cause)

P0100
0102

An excessively high or low voltage from the sen-
sor is sent to ECM.

Harness or connectors
(The sensor circuit is open or shorted.)

Mass air flow sensor

DTC P0100 MASS AIR FLOW SEN

YD22DDTI

Component Description

EC-1143

SEF817Y

DTC Confirmation Procedure

NLEC0646

WITH CONSULT-II

NLEC0646S01

Turn ignition switch “ON”, and wait at least 6 seconds.

Select “DATA MONITOR” mode with CONSULT-II.

Start engine and wait at least 3 seconds.

If DTC is detected, go to “Diagnostic Procedure”, EC-1147.

WITHOUT CONSULT-II

NLEC0646S02

Turn ignition switch “ON”, and wait at least 6 seconds.

Start engine and wait at least 3 seconds.

Turn ignition switch “OFF”, wait at least 5 seconds and then
turn “ON”.

Perform “Diagnostic Test Mode II (Self-diagnostic results)” with
ECM.

If DTC is detected, go to “Diagnostic Procedure”, EC-1147.

DTC P0100 MASS AIR FLOW SEN

YD22DDTI

DTC Confirmation Procedure

EC-1144

Content .. 96 97 98 99 ..