Nissan Murano Z50 (2005 year). Manual - part 106

DTC P1147, P1167 HO2S2

EC-451

Revision: 2005 August

2005 Murano

Check the voltage when revving up to 4,000 rpm under no load
at least 10 times.
(Depress and release accelerator pedal as soon as possible.)
The voltage should be above 0.78V at least once during this
procedure.
If the voltage can be confirmed in step 6, step 7 is not nec-
essary.

Keep vehicle at idling for 10 minutes, then check the voltage. Or
check the voltage when coasting from 80 km/h (50 MPH) in D
position.
The voltage should be above 0.78V at least once during this
procedure.

If NG, go to

EC-455, "Diagnostic Procedure"

PBIB1607E

EC-452

DTC P1147, P1167 HO2S2

Revision: 2005 August

2005 Murano

Wiring Diagram

ABS004KN

BANK 1

TBWA0694E

DTC P1147, P1167 HO2S2

EC-453

Revision: 2005 August

2005 Murano

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)

Heated oxygen sensor 2
(bank 1)

[Engine is running]

●

Warm-up condition

●

Revving engine from idle to 3,000 rpm
quickly after the following conditions are
met.

–

After keeping the engine speed between
3,500 and 4,000 rpm for 1 minute and at idle
for 1 minute under no load.

0 - Approximately 1.0V

Sensor ground
(Heated oxygen sensor)

[Engine is running]

●

Warm-up condition

●

Idle speed

Approximately 0V

EC-454

DTC P1147, P1167 HO2S2

Revision: 2005 August

2005 Murano

BANK 2

TBWA0695E

DTC P1147, P1167 HO2S2

EC-455

Revision: 2005 August

2005 Murano

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.

Diagnostic Procedure

ABS004KO

CHECK GROUND CONNECTIONS

Turn ignition switch OFF.

Loosen and retighten two ground screws on the body.
Refer to

EC-166, "Ground Inspection"

OK or NG

>> GO TO 2.

>> Repair or replace ground connections.

TER-

MINAL

NO.

WIRE

COLOR

ITEM

CONDITION

DATA (DC Voltage)

Heated oxygen sensor 2
(bank 2)

[Engine is running]

●

Warm-up condition

●

Revving engine from idle to 3,000 rpm
quickly after the following conditions are
met.

–

After keeping the engine speed between
3,500 and 4,000 rpm for 1 minute and at idle
for 1minute under no load.

0 - Approximately 1.0V

Sensor ground
(Heated oxygen sensor)

[Engine is running]

●

Warm-up condition

●

Idle speed

Approximately 0V

PBIB1835E

EC-456

DTC P1147, P1167 HO2S2

Revision: 2005 August

2005 Murano

CLEAR THE SELF-LEARNING DATA

With CONSULT-II

Start engine and warm it up to normal operating temperature.

Select “SELF-LEARNING CONT” in “WORK SUPPORT” mode
with CONSULT-II.

Clear the self-learning control coefficient by touching “CLEAR”.

Run engine for at least 10 minutes at idle speed.
Is the 1st trip DTC P0171 or P0174 detected?
Is it difficult to start engine?

Without CONSULT-II

Start engine and warm it up to normal operating temperature.

Turn ignition switch OFF.

Disconnect mass air flow sensor harness connector, and restart
and run engine for at least 5 seconds at idle speed.

Stop engine and reconnect mass air flow sensor harness con-
nector.

Make sure DTC P0102 is displayed.

Erase the DTC memory. Refer to

EC-60, "HOW TO ERASE

Make sure DTC P0000 is displayed.

Run engine for at least 10 minutes at idle speed.
Is the 1st trip DTC P0171 or P0174 detected?
Is it difficult to start engine?

Yes or No

Yes

>> Perform trouble diagnosis for DTC P0171or P0174. Refer to

EC-245

>> GO TO 3.

SEF968Y

PBIB1353E

DTC P1147, P1167 HO2S2

EC-457

Revision: 2005 August

2005 Murano

CHECK HO2S2 GROUND CIRCUIT FOR OPEN AND SHORT

Turn ignition switch OFF.

Disconnect ECM harness connector.

Disconnect heated oxygen sensor 2 harness connector.

Check harness continuity between HO2S2 terminal 4 and ECM terminal 78.
Refer to Wiring Diagram.

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

OK or NG

>> GO TO 4.

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

CHECK HO2S2 INPUT SIGNAL CIRCUIT FOR OPEN AND SHORT

Check harness continuity between ECM terminal and HO2S2 terminal as follows.
Refer to Wiring Diagram.

Check harness continuity between the following terminals and ground.
Refer to Wiring Diagram.

Also check harness for short to power.

OK or NG

>> GO TO 5.

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

Continuity should exist.

PBIB1352E

DTC

Terminals

Bank

ECM

Sensor

P1147

P1167

Continuity should exist.

DTC

Terminals

Bank

ECM

Sensor

P1147

P1167

Continuity should not exist.

EC-458

DTC P1147, P1167 HO2S2

Revision: 2005 August

2005 Murano

CHECK HEATED OXYGEN SENSOR 2

Refer to

EC-458, "Component Inspection"

OK or NG

>> GO TO 6.

>> Replace malfunctioning heated oxygen sensor 2.

CHECK INTERMITTENT INCIDENT

Refer to

EC-157, "TROUBLE DIAGNOSIS FOR INTERMITTENT INCIDENT"

>> INSPECTION END

Component Inspection

ABS004KP

HEATED OXYGEN SENSOR 2

With CONSULT-II

Turn ignition switch ON and select “DATA MONITOR” mode with
CONSULT-II.

Start engine and warm it up to the normal operating tempera-
ture.

Turn ignition switch OFF and wait at least 10 seconds.

Start engine and keep the engine speed between 3,500 and
4,000 rpm for at least 1 minute under no load.

Let engine idle for 1 minute.

Select “FUEL INJECTION” in “ACTIVE TEST” mode, and select
“HO2S2 (B1)/(B2)” as the monitor item with CONSULT-II.

Check “HO2S2 (B1)/(B2)” at idle speed when adjusting “FUEL INJECTION” to

25%.

“HO2S2 (B1)/(B2)” should be above 0.78V at least once when the “FUEL INJECTION” is +25%.
“HO2S2 (B1)/(B2)” should be below 0.18V at least once when the “FUEL INJECTION” is

−

25%.

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.

SEF174Y

PBIB1672E

PBIB2163E

DTC P1147, P1167 HO2S2

EC-459

Revision: 2005 August

2005 Murano

●

Before installing new oxygen sensor, clean exhaust system threads using Oxygen Sensor Thread
Cleaner tool J-43897-18 or J-43897-12 and approved anti-seize lubricant.

Without CONSULT-II

Start engine and warm it up to the normal operating temperature.

Turn ignition switch OFF and wait at least 10 seconds.

Start engine and keep the engine speed between 3,500 and 4,000 rpm for at least 1 minute under no load.

Let engine idle for 1 minute.

Set voltmeter probes between ECM terminal 74 [HO2S2 (B1) signal] or 55 [HO2S2 (B2) signal] and
ground.

Check the voltage when revving up to 4,000 rpm under no load
at least 10 times.
(Depress and release accelerator pedal as soon as possible.)
The voltage should be above 0.78V at least once during this
procedure.
If the voltage is above 0.78V at step 6, step 7 is not neces-
sary.

Keep vehicle at idling for 10 minutes, then check voltage. Or
check the voltage when coasting from 80 km/h (50 MPH) in D
position.
The voltage should be below 0.18V at least once during this
procedure.

If NG, 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 J-43897-18 or J-43897-12 and approved anti-seize lubricant.

Removal and Installation

ABS004KQ

HEATED OXYGEN SENSOR 2

Refer to

EM-25, "EXHAUST MANIFOLD AND THREE WAY CATALYST"

PBIB1607E

EC-460

DTC P1148, P1168 CLOSED LOOP CONTROL

Revision: 2005 August

2005 Murano

DTC P1148, P1168 CLOSED LOOP CONTROL

PFP:22690

On Board Diagnosis Logic

ABS004KR

These self-diagnoses have the one trip detection logic.

DTC P1148 or P1168 is displayed with another DTC for air fuel ratio (A/F) sensor 1.
Perform the trouble diagnosis for the corresponding DTC.

DTC No.

Trouble diagnosis name

DTC detecting condition

Possible cause

P1148
1148
(Bank 1)

Closed loop control
function

The closed loop control function for bank 1
does not operate even when vehicle is driving
in the specified condition.

●

Harness or connectors
[The air fuel ratio (A/F) sensor 1 circuit is
open or shorted.]

●

Air fuel ratio (A/F) sensor 1

●

Air fuel ratio (A/F) sensor 1 heater

P1168
1168
(Bank 2)

The closed loop control function for bank 2
does not operate even when vehicle is driving
in the specified condition.

DTC P1211 TCS CONTROL UNIT

EC-461

Revision: 2005 August

2005 Murano

DTC P1211 TCS CONTROL UNIT

PFP:47850

Description

ABS004KV

The malfunction information related to TCS is transferred through the CAN communication line from ABS
actuator and electric unit (control unit) to ECM.
Be sure to erase the malfunction information such as DTC not only for “ABS actuator and electric unit
(control unit)” but also for ECM after TCS related repair.

On Board Diagnosis Logic

ABS004KW

Freeze frame data is not stored in the ECM for this self-diagnosis. The MIL will not light up for this self-
diagnosis.

DTC Confirmation Procedure

ABS004KX

TESTING CONDITION:
Before performing the following procedure, confirm that battery voltage is more than 10.5V at idle.

WITH CONSULT-II

Turn ignition switch ON.

Select “DATA MONITOR” mode with CONSULT-II.

Start engine and let it idle for at least 60 seconds.

If 1st trip DTC is detected, go to

EC-461, "Diagnostic Procedure"

WITH GST

Follow the procedure “WITH CONSULT-II” above.

Diagnostic Procedure

ABS004KY

Refer to

BRC-56, "TROUBLE DIAGNOSIS"

(models with VDC) or

BRC-10, "TROUBLE DIAGNOSIS"

(mod-

els without VDC).

DTC No.

Trouble diagnosis name

DTC detecting condition

Possible cause

P1211
1211

TCS control unit

ECM receives a malfunction information from
“ABS actuator and electric unit (control unit)”.

●

ABS actuator and electric unit (control
unit)

●

TCS related parts

SEF058Y

EC-462

DTC P1212 TCS COMMUNICATION LINE

Revision: 2005 August

2005 Murano

DTC P1212 TCS COMMUNICATION LINE

PFP:47850

Description

ABS004KZ

NOTE:
If DTC P1212 is displayed with DTC U1000 or U1001, first perform the trouble diagnosis for DTC U1000,
U1001. Refer to

EC-167, "DTC U1000, U1001 CAN COMMUNICATION LINE"

This CAN communication line is used to control the smooth engine operation during the TCS operation. Pulse
signals are exchanged between ECM and ABS actuator and electric unit (control unit).
Be sure to erase the malfunction information such as DTC not only for “ABS actuator and electric unit
(control unit)” but also for ECM after TCS related repair.

On Board Diagnosis Logic

ABS004L0

Freeze frame data is not stored in the ECM for this self-diagnosis. The MIL will not light up for this self-
diagnosis.

DTC Confirmation Procedure

ABS004L1

TESTING CONDITION:
Before performing the following procedure, confirm that battery voltage is more than 10.5V at idle.

WITH CONSULT-II

Turn ignition switch ON.

Select “DATA MONITOR” mode with CONSULT-II.

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

If a 1st trip DTC is detected, go to

EC-462, "Diagnostic Proce-

dure"

WITH GST

Follow the procedure “WITH CONSULT-II” above.

Diagnostic Procedure

ABS004L2

Refer to

BRC-56, "TROUBLE DIAGNOSIS"

(models with VDC) or

BRC-10, "TROUBLE DIAGNOSIS"

(mod-

els without VDC).

DTC No.

Trouble diagnosis name

DTC detecting condition

Possible cause

P1212
1212

TCS communication
line

ECM can not receive the information
from “ABS actuator and electric unit (con-
trol unit)” continuously.

●

Harness or connectors
(The CAN communication line is open or
shorted.)

●

ABS actuator and electric unit (control unit)

●

Dead (Weak) battery

SEF058Y

DTC P1217 ENGINE OVER TEMPERATURE

EC-463

Revision: 2005 August

2005 Murano

DTC P1217 ENGINE OVER TEMPERATURE

PFP:00000

Description

ABS004L3

SYSTEM DESCRIPTION

NOTE:
If DTC P1217 is displayed with DTC U1000 or U1001, first perform the trouble diagnosis for DTC U1000,
U1001. Refer to

EC-167, "DTC U1000, U1001 CAN COMMUNICATION LINE"

Cooling Fan Control

*1: The ECM determines the start signal status by the signals of engine speed and battery voltage.
*2: This signals is sent to ECM through CAN communication line.

The ECM controls the cooling fan corresponding to the vehicle speed, engine coolant temperature, refrigerant
pressure, and air conditioner ON signal. The control system has 3-step control [HIGH/LOW/OFF].

Cooling Fan Operation

Sensor

Input Signal to ECM

ECM function

Actuator

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

Engine speed*

Cooling fan
control

IPDM E/R
(Cooling fan relay)

Battery

Battery voltage*

Wheel sensor*

Vehicle speed

Engine coolant temperature sensor

Engine coolant temperature

Air conditioner switch*

Air conditioner ON signal

Refrigerant pressure sensor

Refrigerant pressure

PBIB2622E

EC-464

DTC P1217 ENGINE OVER TEMPERATURE

Revision: 2005 August

2005 Murano

Cooling Fan Relay Operation

The ECM controls cooling fan relays in the IPDM E/R through CAN communication line.

COMPONENT DESCRIPTION
Cooling Fan Motor

The cooling fan operates at each speed when the current flows in the cooling fan motor as follows.

CONSULT-II Reference Value in Data Monitor Mode

ABS004L4

Specification data are reference values.

Cooling fan speed

Cooling fan relay

Stop (OFF)

OFF

Low (LOW)

OFF

High (HI)

Cooling fan speed

Cooling fan motor terminals

(+)

(

−

)

Low (LOW)

High (HI)

1 and 2

3 and 4

MONITOR ITEM

CONDITION

SPECIFICATION

AIR COND SIG

●

Engine: After warming up, idle
the engine

Air conditioner switch: OFF

OFF

Air conditioner switch: ON
(Compressor operates.)

COOLING FAN

●

Engine: After warming up, idle
the engine

●

Air conditioner switch: OFF

Engine coolant temperature is 94

(201

F) or less

OFF

Engine coolant temperature is
between 95

C (203

F) and 99

(210

LOW

Engine coolant temperature is 100

(212

F) or more

DTC P1217 ENGINE OVER TEMPERATURE

EC-465

Revision: 2005 August

2005 Murano

On Board Diagnosis Logic

ABS004L5

If the cooling fan or another component in the cooling system malfunctions, engine coolant temperature will
rise.
When the engine coolant temperature reaches an abnormally high temperature condition, a malfunction is
indicated.
This self-diagnosis has the one trip detection logic.

CAUTION:

When a malfunction is indicated, be sure to replace the coolant. Refer to

CO-9, "Changing Engine

Coolant"

. Also, replace the engine oil. Refer to

LU-8, "Changing Engine Oil"

Fill radiator with coolant up to specified level with a filling speed of 2 liters per minute. Be sure to
use coolant with the proper mixture ratio. Refer to

MA-11, "Anti-Freeze Coolant Mixture Ratio"

After refilling coolant, run engine to ensure that no water-flow noise is emitted.

Overall Function Check

ABS004L6

Use this procedure to check the overall function of the cooling fan. During this check, a DTC might not be con-
firmed.

WARNING:

Never remove the radiator cap when the engine is hot. Serious burns could be caused by high pres-
sure fluid escaping from the radiator.
Wrap a thick cloth around cap. Carefully remove the cap by turning it a quarter turn to allow built-up
pressure to escape. Then turn the cap all the way off.

WITH CONSULT-II

Check the coolant level in the reservoir tank and radiator.
Allow engine to cool before checking coolant level.
If the coolant level in the reservoir tank and/or radiator is below
the proper range, skip the following steps and go to

EC-469,

"Diagnostic Procedure"

Confirm whether customer filled the coolant or not. If customer
filled the coolant, skip the following steps and go to

EC-469,

"Diagnostic Procedure"

Turn ignition switch ON.

DTC No.

Trouble diagnosis name

DTC detecting condition

Possible cause

P1217
1217

Engine over tempera-
ture (Overheat)