Nissan Tiida C11. Manual - part 490

EC-610

< COMPONENT DIAGNOSIS >

[HR16DE (WITHOUT EURO-OBD)]

HO2S1

2.

Disconnect heated oxygen sensor 1 harness connector.

3.

Disconnect ECM harness connector.

4.

Check harness continuity between HO2S1 harness connector and ECM harness connector.

5.

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

Is the inspection result normal?

YES

>> GO TO 6.

NO

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

6.

CHECK HEATED OXYGEN SENSOR 1 INPUT SIGNAL CIRCUIT FOR OPEN AND SHORT

1.

Check the continuity between HO2S1 harness connector and ECM harness connector.

2.

Check the continuity between HO2S1 harness connector or ECM harness connector and ground.

3.

Also check harness for short to power.

Is the inspection result normal?

YES

>> GO TO 7.

NO

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

7.

CHECK MASS AIR FLOW SENSOR

Check mass air flow sensor.
Refer to 

EC-489, "Component Inspection"

.

Is the inspection result normal?

YES

>> GO TO 8.

NO

>> Replace mass air flow sensor.

8.

CHECK PCV VALVE

Refer to 

EC-631, "Component Inspection"

.

Is the inspection result normal?

YES

>> GO TO 9.

NO

>> Repair or replace PCV valve.

9.

CHECK HEATED OXYGEN SENSOR 1

Perform 

EC-611, "Component Inspection"

.

Is the inspection result normal?

YES

>> GO TO 10.

NO

>> Replace heated oxygen sensor 1.

10.

CHECK INTERMITTENT INCIDENT

Refer to 

GI-55, "Intermittent Incident"

.

>> INSPECTION END

HO2S1

ECM

Continuity

Connector

Terminal

Connector

Terminal

F30

1

F8

56

existed

HO2S1

ECM

Continuity

Connector

Terminal

Connector

Terminal

F30

1

F8

56

Existed

HO2S1

ECM

Ground

Continuity

Connector

Terminal

Connector

Terminal

F30

4

F8

49

Ground

Not existed

HO2S1

EC-611

< COMPONENT DIAGNOSIS >

[HR16DE (WITHOUT EURO-OBD)]

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Component Inspection

INFOID:0000000001697494

1.

INSPECTION START

Do you have CONSULT-III?

Do you have CONSULT-III?

YES

>> GO TO 2.

NO

>> GO TO 3.

2.

CHECK HEATED OXYGEN SENSOR 1

 With CONSULT-III

1.

Start engine and warm it up to normal operating temperature.

2.

Set “POST TRIGGER” to 100% in “DATA MONITOR” mode with CONSULT-III. 

3.

Select “HO2S1 (B1)” and “HO2S1 MNTR (B1)”.

4.

Hold engine speed at 2,000 rpm under no load during the following steps.

5.

Touch “RECORD” on CONSULT-III screen.

6.

Check the following.

-

“HO2S1 MNTR (B1)” in “DATA MONITOR” mode changes from
“RICH” to “LEAN” to “RICH” more than 5 times in 10 seconds.

5 times (cycles) are counted as shown in the figure.

-

“HO2S1 (B1)” voltage goes above 0.6V at least once.

-

“HO2S1 (B1)” voltage goes below 0.3V at least once.

-

“HO2S1 (B1)” voltage never exceeds 1.0V.

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.

Is the inspection result normal?

YES

>> INSPECTION END

NO

>> GO TO 3.

3.

CHECK HEATED OXYGEN SENSOR 1

 Without CONSULT-III

1.

Start engine and warm it up to normal operating temperature.

2.

Check the voltage between ECM harness connector and ground under the following condition.

SEF217YA

JMBIA0352ZZ

EC-612

< COMPONENT DIAGNOSIS >

[HR16DE (WITHOUT EURO-OBD)]

HO2S1

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.

Is the inspection result normal?

YES

>> INSPECTION END

NO

>> GO TO 4

4.

REPLACE HEATED OXYGEN SENSOR 1

Replace heated oxygen sensor 1.

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

ECM

ground

Condition

Voltage

Connector

Terminal

F8

49

(HO2S1 signal)

Ground

Engine speed held at 2,000 
rpm constant under no load.

• The voltage fluctuates between 0 to 0.3V and 0.6 to 

1.0V more than 5 times within 10 seconds.

• The maximum voltage is over 0.6V at least 1 time.
• The minimum voltage is below 0.3V at least 1 time.
• The voltage never exceeds 1.0V.
1 time: 0 - 0.3V 

→

 0.6 - 1.0V 

→

 0 - 0.3V

2 times: 0 - 0.3V 

→

 0.6 - 1.0V 

→

 0 - 0.3V 

→

 0.6 - 1.0V 

→

 0 - 0.3V

HO2S1 HEATER

EC-613

< COMPONENT DIAGNOSIS >

[HR16DE (WITHOUT EURO-OBD)]

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HO2S1 HEATER

Description

INFOID:0000000001697495

SYSTEM DESCRIPTION

The ECM performs ON/OFF duty control of the Heated oxygen sensor 1 heater corresponding to the engine
operating condition to keep the temperature of Heated oxygen sensor 1 element at the specified range.

OPERATION

Component Function Check

INFOID:0000000001697496

1.

CHECK HEATED OXYGEN SENSOR 2 HEATER FUNCTION

1.

Start engine and warm it up to normal operating temperature.

2.

Turn ignition switch OFF and wait at least 10 seconds.

3.

Set tester prove between ECM harness connection and ground.

4.

Start engine and let it idle.

5.

Check the voltage under the following conditions.Verify that the oscilloscope screen shows the signal
waves as shown below.

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

Is the inspection result normal?

YES

>> INSPECTION END.

NO

>> Go to 

EC-613, "Diagnosis Procedure"

.

Diagnosis Procedure

INFOID:0000000001697497

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.

Sensor

Input Signal to ECM

ECM function

Actuator

Camshaft position sensor (PHASE)
Crankshaft position sensor (POS)

Engine speed

Heated oxygen sensor 1 
heater control

Heated oxygen sensor 1 
heater

Mass air flow sensor

Amount of intake air

Engine speed rpm

Heated oxygen sensor 1 heater

Above 3,600

OFF

Below 3,600 rpm after the following conditions are met.
• Engine: After warming up

ON

ECM

Ground

Condition

Voltage

Connector

Terminal

F7

3

(HO2S1 HEATER signal)

Ground

At idle

Approximately 7.0

Engine speed is above 3,600 
rpm

BATTERY VOLTAGE

(11 - 14V)

JMBIA0325GB