Nissan Tiida C11. Manual - part 493

EC-622

< COMPONENT DIAGNOSIS >

[HR16DE (WITHOUT EURO-OBD)]

HO2S2 HEATER

>> INSPECTION END

8.

CHECK INTERMITTENT INCIDENT

Refer to 

GI-55, "Intermittent Incident"

.

>> INSPECTION END

Component Inspection

INFOID:0000000001697506

1.

CHECK HEATED OXYGEN SENSOR 2 HEATER

1.

Turn ignition switch OFF.

2.

Disconnect heated oxygen sensor 2 harness connector.

3.

Check resistance between HO2S2 terminals as follows.

Is the inspection result normal?

YES

>> INSPECTION END

NO

>> GO TO 2.

2.

REPLACE HEATED OXYGEN SENSOR 2

Replace heated oxygen sensor 2.

CAUTION:

• Discard any heated oxygen sensor which has been dropped from a height of more than 0.5 m (19.7

in) onto a hard surface such as a concrete floor; use a new one.

• Before installing new oxygen sensor, clean exhaust system threads using Oxygen Sensor Thread

Cleaner tool and approved anti-seize lubricant.

>> INSPECTION END

Terminals

Resistance [at 25

°

C (77

°

F)]

2 and 3

3.3 - 4.4 

Ω

1 and 2, 3, 4

∞

 

Ω

(Continuity should not exist)

4 and 1, 2, 3

IAT SENSOR

EC-623

< COMPONENT DIAGNOSIS >

[HR16DE (WITHOUT EURO-OBD)]

C

D

E

F

G

H

I

J

K

L

M

A

EC

N

P

O

IAT SENSOR

Description

INFOID:0000000001697507

The intake air temperature sensor is built-into mass air flow sensor
(1). The sensor detects intake air temperature and transmits a signal
to the ECM.
The temperature sensing unit uses a thermistor which is sensitive to
the change in temperature. Electrical resistance of the thermistor
decreases in response to the temperature rise.

<Reference data>

*: These data are reference values and are measured between ECM terminal 46
(Intake air temperature sensor) 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.

Component Function Check

INFOID:0000000001697508

1.

CHECK INTAKE AIR TEMPERATURE SENSOR FUNCTION

1.

Turn ignition switch ON.

2.

Check the voltage between ECM harness connector and ground.

Is the inspection result normal?

YES

>> INSPECTION END

NO

>> Go to 

EC-623, "Diagnosis Procedure"

.

Diagnosis Procedure

INFOID:0000000001697509

1.

CHECK GROUND CONNECTION

1.

Turn ignition switch OFF.

2.

Check ground connection E21. Refer to Ground Inspection in 

GI-58, "Circuit Inspection"

.

Is the inspection result normal?

YES

>> GO TO 2.

NO

>> Repair or replace ground connection.

2.

CHECK INTAKE AIR TEMPERATURE SENSOR POWER SUPPLY CIRCUIT

1.

Disconnect mass air flow sensor (with intake air temperature sensor) harness connector.

2.

Turn ignition switch ON.

3.

Check the voltage between mass air flow sensor harness connector and ground.

PBIA9559J

Intake air temperature

°

C (

°

F)

Voltage*

V

Resistance

k

Ω

25 (77)

3.3

1.800 - 2.200

80 (176)

1.2

0.283 - 0.359

SEF012P

ECM

Ground

Voltage

Connector

Terminal

F8

46

Ground

Approx. 0 - 4.8V

EC-624

< COMPONENT DIAGNOSIS >

[HR16DE (WITHOUT EURO-OBD)]

IAT SENSOR

Is the inspection result normal?

YES

>> GO TO 3.

NO

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

3.

CHECK INTAKE AIR TEMPERATURE SENSOR GROUND CIRCUIT FOR OPEN AND SHORT

1.

Turn ignition switch OFF.

2.

Disconnect ECM harness connector.

3.

Check the continuity between mass air flow sensor harness connector and ECM harness connector.

4.

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

Is the inspection result normal?

YES

>> GO TO 4.

NO

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

4.

CHECK INTAKE AIR TEMPERATURE SENSOR

Refer to 

EC-624, "Component Inspection"

.

Is the inspection result normal?

YES

>> GO TO 5.

NO

>> Replace mass air flow sensor (with intake air temperature sensor).

5.

CHECK INTERMITTENT INCIDENT

Refer to 

GI-55, "Intermittent Incident"

.

>> INSPECTION END

Component Inspection

INFOID:0000000001697510

1.

CHECK INTAKE AIR TEMPERATURE SENSOR

1.

Turn ignition switch OFF.

2.

Disconnect mass air flow sensor harness connector.

3.

Check resistance between mass air flow sensor terminals as follows.

Is the inspection result normal?

YES

>> INSPECTION END

NO

>> Replace mass air flow sensor (with intake air temperature sensor).

MAF sensor

Ground

Voltage

Connector

Terminal

E18

2

Ground

Approx. 5V

MAF sensor

ECM

Continuity

Connector

Terminal

Connector

Terminal

E18

1

F8

55

Existed

Terminals

Condition

Resistance

1 and 2

Temperature C

°°

 (F

°

)

25 (77)

1.800 - 2.200 k

Ω

IGNITION SIGNAL

EC-625

< COMPONENT DIAGNOSIS >

[HR16DE (WITHOUT EURO-OBD)]

C

D

E

F

G

H

I

J

K

L

M

A

EC

N

P

O

IGNITION SIGNAL

Description

INFOID:0000000001693439

The ignition signal from the ECM is sent to and amplified by the power transistor. The power transistor turns
ON and OFF the ignition coil primary circuit. This ON/OFF operation induces the proper high voltage in the coil
secondary circuit.

Component Function Check

INFOID:0000000001693440

1.

INSPECTION START

Turn ignition switch OFF, and restart engine.

Does the engine start?

YES-1 >> With CONSULT-III: GO TO 2.
YES-2 >> Without CONSULT-III: GO TO 3.
NO

>> Go to 

EC-625, "Diagnosis Procedure"

.

2.

IGNITION SIGNAL FUNCTION

With CONSULT-III

1.

Perform “POWER BALANCE” in “ACTIVE TEST” mode with CONSULT-III.

2.

Make sure that each circuit produces a momentary engine speed drop.

Is the inspection result normal?

YES

>> INSPECTION END

NO

>> Go to 

EC-625, "Diagnosis Procedure"

.

3.

IGNITION SIGNAL FUNCTION

 Without CONSULT-III

1.

Let engine idle.

2.

Read the voltage signal between ECM harness connector terminals as follows.

NOTE:
The pulse cycle changes depending on rpm at idle.

Is the inspection result normal?

YES

>> INSPECTION END

NO

>> Go to 

EC-625, "Diagnosis Procedure"

.

Diagnosis Procedure

INFOID:0000000001693441

1.

CHECK IGNITION COIL POWER SUPPLY CIRCUIT-I

1.

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

2.

Check the voltage between ECM harness connector terminals as follows.

ECM

Ground

Voltage signal

Connector

Terminal

Connector

Terminal

F10

17

E16

108

18

21

22

JMBIA0329GB

(+)

(–)

Voltage

Connector

Terminal

Connector

Terminal

E16

105

E16

108

Battery voltage