Nissan Qashqai (2007-2010). Manual — part 159

P0134 HO2S1

EC-155

< COMPONENT DIAGNOSIS >

[HR16DE (WITH EURO-OBD)]

C

D

E

F

G

H

I

J

K

L

M

A

EC

N

P

O

• 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

EC-156

< COMPONENT DIAGNOSIS >

[HR16DE (WITH EURO-OBD)]

P0135 HO2S1 HEATER

P0135 HO2S1 HEATER

Description

INFOID:0000000001056182

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

DTC Logic

INFOID:0000000001056183

DTC DETECTION LOGIC

DTC CONFIRMATION PROCEDURE

1.

PRECONDITIONING

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 that battery voltage is more than between 11V at
idle.

>> GO TO 2.

2.

PERFORM DTC CONFIRMATION PROCEDURE

1.

Start engine and let it idle for at least 10 seconds.

2.

Check 1st trip DTC.

Is 1st trip DTC detected?

YES

>> Go to

EC-156, "Diagnosis Procedure"

.

NG

>> INSPECTION END

Diagnosis Procedure

INFOID:0000000001056184

1.

CHECK GROUND CONNECTION

1.

Turn ignition switch OFF.

2.

Check ground connection E21. Refer to Ground Inspection in

GI-41, "Circuit Inspection"

.

Is the inspection result normal?

YES

>> GO TO 2.

NO

>> Repair or replace ground connection.

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

DTC No.

Trouble diagnosis name

DTC detecting condition

Possible cause

P0031

Heated oxygen sensor 1
heater control circuit low

The current amperage in the heated oxygen sensor
1 heater circuit is out of the normal range.
(An excessively low voltage signal is sent to ECM
through the heated oxygen sensor 1 heater.)

• Harness or connectors

(The heated oxygen sensor 1 heater
circuit is open or shorted.)

• heated oxygen sensor 1 heater

P0135 HO2S1 HEATER

EC-157

< COMPONENT DIAGNOSIS >

[HR16DE (WITH EURO-OBD)]

C

D

E

F

G

H

I

J

K

L

M

A

EC

N

P

O

2.

CHECK HO2S1 POWER SUPPLY CIRCUIT

1.

Disconnect HO2S1 harness connector.

2.

Turn ignition switch ON.

3.

Check the voltage between HO2S1 harness connector and ground.

Is the inspection result normal?

YES

>> GO TO 4.

NO

>> GO TO 3.

3.

DETECT MALFUNCTIONING PART

Check the following.
• Harness connectors F123, E6
• 10A fuse (No. 56)
• Harness for open or short between HO2S1 and fuse

>> Repair or replace harness or connectors.

4.

CHECK HO2S1 HEATER OUTPUT SIGNAL CIRCUIT

1.

Turn ignition switch OFF.

2.

Disconnect ECM harness connector.

3.

Check the continuity between HO2S1 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 5.

NO

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

5.

CHECK HO2S1 HEATER

Refer to

EC-158, "Component Inspection"

.

Is the inspection result normal?

YES

>> GO TO 7.

NO

>> GO TO 6.

6.

REPLACE HO2S1

Replace HO2S1.

CAUTION:

• Discard any heated oxygen sensor 1 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 heated oxygen sensor 1, clean exhaust system threads using Oxygen Sensor

Thread Cleaner tool and approved anti-seize lubricant.

>> INSPECTION END

7.

CHECK INTERMITTENT INCIDENT

Perform

GI-39, "Intermittent Incident"

.

>> Repair or replace.

HO2S1

Ground

Voltage

Connector

Terminal

F30

2

Ground

Battery voltage

HO2S1

ECM

Continuity

Connector

Terminal

Connector

Terminal

F30

3

F7

3

Existed

EC-158

< COMPONENT DIAGNOSIS >

[HR16DE (WITH EURO-OBD)]

P0135 HO2S1 HEATER

Component Inspection

INFOID:0000000001056185

1.

CHECK HEATED OXYGEN SENSOR 1

1.

Turn ignition switch OFF.

2.

Disconnect heated oxygen sensor 1 harness connector.

3.

Check resistance between HO2S1 terminals as follows.

Is the inspection result normal?

YES

>> INSPECTION END

NO

>> GO TO 2.

2.

REPLACE HEATED OXYGEN SENSOR 1

Replace heated oxygen sensor 1.

CAUTION:

• Discard any 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 sensor, clean exhaust system threads using Heated Oxygen Sensor Thread

Cleaner tool and approved anti-seize lubricant.

>> INSPECTION END

Terminals

Resistance [at 25

°

C (77

°

F)]

2 and 3

3.4 - 4.4

Ω

1 and 2, 3, 4

∞

Ω

(Continuity should not exist)

4 and 1, 2, 3