Nissan Pathfinder (2010 year). Manual - part 355

 

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Nissan Pathfinder (2010 year). Manual - part 355

 

 

EC-932

< ECU DIAGNOSIS >

[VK56DE]

ECM

*1: 1st trip DTC No. is the same as DTC No.
*2: This number is prescribed by SAE J2012/ISO 15031-6.
*3: In Diagnostic Test Mode II (Self-diagnostic results), this number is controlled by NISSAN.
*4: SRT code will not be set if the self-diagnostic result is NG.
*5: The troubleshooting for this DTC needs CONSULT-III.
*6: When the fail-safe operations for both self-diagnoses occur, the MIL illuminates.
*7: When the ECM is in the mode that displays SRT status, MIL may blink. For the details, refer to “How to Display SRT Status”.
*8: When erasing this DTC, always use CONSULT-III or GST.

Emission-related Diagnostic Information

INFOID:0000000005575570

DTC AND 1ST TRIP DTC

The 1st trip DTC (whose number is the same as the DTC number) is displayed for the latest self-diagnostic

result obtained. If the ECM memory was cleared previously, and the 1st trip DTC did not recur, the 1st trip DTC

will not be displayed.

LOCK MODE

P1610

1610

2

SEC-42

 or 

SEC-143

ID DISCORD, IMMU-ECM

P1611

1611

2

SEC-36

 or 

SEC-140

CHAIN OF ECM-IMMU

P1612

1612

2

SEC-38

 or 

SEC-142

CHAIN OF IMMU-KEY

P1614

1614

2

SEC-32

 or 

SEC-136

DIFFERENCE OF KEY

P1615

1615

2

SEC-35

 or 

SEC-139

INTERLOCK

P1730

1730

1

×

TM-81

INPUT CLUTCH SOL

P1752

1752

1

×

TM-85

FR BRAKE SOLENOID

P1757

1757

1

×

TM-87

DRCT CLUTCH SOL

P1762

1762

1

×

TM-89

HLR CLUTCH SOLENOID

P1767

1767

1

×

TM-91

L C BRAKE SOLENOID

P1772

1772

1

×

TM-93

L C BRAKE SOLENOID

P1774

1774

1

×

TM-95

BRAKE SW/CIRCUIT

P1805

1805

2

EC-832

ETC MOT PWR-B1

P2100

2100

1

×

EC-835

ETC FNCTN/CIRC-B1

P2101

2101

1

×

EC-838

ETC MOT PWR

P2103

2103

1

×

EC-835

ETC MOT-B1

P2118

2118

1

×

EC-842

ETC ACTR-B1

P2119

2119

1

×

EC-844

APP SEN 1/CIRC

P2122

2122

1

×

EC-846

APP SEN 1/CIRC

P2123

2123

1

×

EC-846

APP SEN 2/CIRC

P2127

2127

1

×

EC-849

APP SEN 2/CIRC

P2128

2128

1

×

EC-849

TP SENSOR-B1

P2135

2135

1

×

EC-853

APP SENSOR

P2138

2138

1

×

EC-857

A/F SENSOR1 (B1)

P2A00

2A00

2

×

EC-861

A/F SENSOR1 (B2)

P2A03

2A03

2

×

EC-861

Items

 (CONSULT-III screen terms)

DTC*

1

SRT code

Trip

MIL

Reference 

page

CONSULT-III

GST*

2

ECM*

3

2010 Pathfinder

ECM

EC-933

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If a malfunction is detected during the 1st trip, the 1st trip DTC is saved in the ECM memory. The MIL will not

illuminate (two trip detection logic). If the same malfunction is not detected in the 2nd trip (meeting the required

driving pattern), the 1st trip DTC is cleared from the ECM memory. If the same malfunction is detected in the

2nd trip, both the 1st trip DTC and DTC are stored in the ECM memory and the MIL illuminates. In other

words, the DTC is stored in the ECM memory and the MIL illuminates when the same malfunction occurs in

two consecutive trips. If a 1st trip DTC is saved and a non-diagnostic operation is performed between the 1st

and 2nd trips, only the 1st trip DTC will continue to be stored. For malfunctions that blink or illuminate the MIL

during the 1st trip, the DTC and 1st trip DTC are stored in the ECM memory.

Procedures for clearing the DTC and the 1st trip DTC from the ECM memory are described in “HOW TO

ERASE EMISSION-RELATED DIAGNOSTIC INFORMATION”.

For malfunctions in which 1st trip DTCs are displayed, refer to 

EC-928, "DTC Index"

. These items are required

by legal regulations to continuously monitor the system/component. In addition, the items monitored non-con-

tinuously are also displayed on CONSULT-III.

1st trip DTC is specified in Service $07 of SAE J1979/ISO 15031-5. 1st trip DTC detection occurs without illu-

minating the MIL and therefore does not warn the driver of a malfunction. However, 1st trip DTC detection will

not prevent the vehicle from being tested, for example during Inspection/Maintenance (I/M) tests.

When a 1st trip DTC is detected, check, print out or write down and erase (1st trip) DTC and Freeze Frame

data as specified in Work Flow procedure Step 2, refer to 

EC-501, "Trouble Diagnosis Introduction"

. Then per-

form DTC Confirmation Procedure or Overall Function Check to try to duplicate the malfunction. If the mal-

function is duplicated, the item requires repair.

How to Read DTC and 1st Trip DTC

DTC and 1st trip DTC can be read by the following methods.

 

With CONSULT-III

CONSULT-III displays the DTC in “SELF DIAGNOSTIC RESULT” mode.

Examples: P0340, P0850, P1148, etc.

These DTCs are prescribed by SAE J2012/ISO 15031-6.

(CONSULT-III also displays the malfunctioning component or system.)

Time data indicates how many times the vehicle was driven after the last detection of a DTC.

If the DTC is being detected currently, the time data will be [0].

If a 1st trip DTC is stored in the ECM, the time data will be [1t].

 

With GST

GST (Generic Scan Tool) displays the DTC in Diagnostic Service $03.

Examples: P0340, P0850, P1148, etc.

These DTCs are prescribed by SAE J2012/ISO 15031-6.

1st trip DTC is displayed in Diagnostic Service $07.

 

No Tools

The number of blinks of the MIL in the Diagnostic Test Mode II (Self-Diagnostic Results) indicates the DTC.

Example: 0340, 0850, 1148, etc.

These DTCs are controlled by NISSAN.

1st trip DTC No. is the same as DTC No.

Output of a DTC indicates a malfunction. However, GST or the Diagnostic Test Mode II does not indi-

cate whether the malfunction is still occurring or has occurred in the past and has returned to nor-

mal. CONSULT-III can identify malfunction status. Therefore, using CONSULT-III (if available) is

recommended.

FREEZE FRAME DATA AND 1ST TRIP FREEZE FRAME DATA

The ECM records the driving conditions such as fuel system status, calculated load value, engine coolant tem-

perature, short-term fuel trim, long-term fuel trim, engine speed, vehicle speed, absolute throttle position, base

fuel schedule and intake air temperature at the moment a malfunction is detected.

Data which are stored in the ECM memory, along with the 1st trip DTC, are called 1st trip freeze frame data.

The data, stored together with the DTC, are called freeze frame data and displayed on CONSULT-III or GST.

The 1st trip freeze frame data can only be displayed on the CONSULT-III screen, not on the GST.

Only one set of freeze frame data (either 1st trip freeze frame data or freeze frame data) can be stored in the

ECM. There is no priority for 1st trip freeze frame data and it is updated each time a different 1st trip DTC is

detected. However, once freeze frame data (2nd trip detection/MIL ON) is stored in the ECM memory, 1st trip

freeze frame data is no longer stored. Remember, only one set of freeze frame data can be stored in the ECM.

The ECM has the following priorities to update the data.

2010 Pathfinder

EC-934

< ECU DIAGNOSIS >

[VK56DE]

ECM

For example, the EGR malfunction (Priority: 2) was detected and the freeze frame data was saved in the 2nd

trip. After that when the misfire (Priority: 1) is detected in another trip, the freeze frame data will be updated

from the EGR malfunction to the misfire. The 1st trip freeze frame data is updated each time a different mal-

function is detected. There is no priority for 1st trip freeze frame data. However, once freeze frame data is

stored in the ECM memory, 1st trip freeze data is no longer stored (because only one freeze frame data or 1st

trip freeze frame data can be stored in the ECM). If freeze frame data is stored in the ECM memory and freeze

frame data with the same priority occurs later, the first (original) freeze frame data remains unchanged in the

ECM memory.

Both 1st trip freeze frame data and freeze frame data (along with the DTCs) are cleared when the ECM mem-

ory is erased. Procedures for clearing the ECM memory are described in “HOW TO ERASE EMISSION-

RELATED DIAGNOSTIC INFORMATION”.

SYSTEM READINESS TEST (SRT) CODE

System Readiness Test (SRT) code is specified in Service $01 of SAE J1979/ISO 15031-5.

As part of an enhanced emissions test for Inspection & Maintenance (I/M), certain states require the status of

SRT be used to indicate whether the ECM has completed self-diagnosis of major emission systems and com-

ponents. Completion must be verified in order for the emissions inspection to proceed.

If a vehicle is rejected for a State emissions inspection due to one or more SRT items indicating “INCMP”, use

the information in this Service Manual to set the SRT to “CMPLT”.

In most cases the ECM will automatically complete its self-diagnosis cycle during normal usage, and the SRT

status will indicate “CMPLT” for each application system. Once set as “CMPLT”, the SRT status remains

“CMPLT” until the self-diagnosis memory is erased.

Occasionally, certain portions of the self-diagnostic test may not be completed as a result of the customer's

normal driving pattern; the SRT will indicate “INCMP” for these items.

NOTE:

The SRT will also indicate “INCMP” if the self-diagnosis memory is erased for any reason or if the ECM mem-

ory power supply is interrupted for several hours.

If, during the state emissions inspection, the SRT indicates “CMPLT” for all test items, the inspector will con-

tinue with the emissions test. However, if the SRT indicates “INCMP” for one or more of the SRT items the

vehicle is returned to the customer untested.

NOTE:

If MIL illuminates during the state emissions inspection, the vehicle is also returned to the customer untested

even though the SRT indicates “CMPLT” for all test items. Therefore, it is important to check SRT (“CMPLT”)

and DTC (No DTCs) before the inspection.

SRT Item

The table below shows required self-diagnostic items to set the SRT to “CMPLT”.

*: If completion of several SRTs is required, perform driving patterns (DTC confirmation procedure), one by one based on the priority for
models with CONSULT-III.

SRT Set Timing

Priority

Items

1

Freeze frame data

Misfire — DTC: P0300 - P0308
Fuel Injection System Function — DTC: P0171, P0172, P0174, P0175

2

Except the above items (Includes A/T related items)

3

1st trip freeze frame data

SRT item

(CONSULT-III indication)

Performance 

Priority*

Required self-diagnostic items to set the SRT to “CMPLT”

Corresponding 

DTC No.

CATALYST

2

Three way catalyst function

P0420, P0430

EVAP SYSTEM

2

EVAP control system purge flow monitoring

P0441

1

EVAP control system

P0442

2

EVAP control system

P0456

HO2S

2

Air fuel ratio (A/F) sensor 1

P0133, P0153

Heated oxygen sensor 2

P0137, P0157

Heated oxygen sensor 2

P0138, P0158

Heated oxygen sensor 2

P0139, P0159

2010 Pathfinder

ECM

EC-935

< ECU DIAGNOSIS >

[VK56DE]

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SRT is set as “CMPLT” after self-diagnosis has been performed one or more times. Completion of SRT is

done regardless of whether the result is OK or NG. The set timing is different between OK and NG results and

is shown in the table below.

OK: Self-diagnosis is carried out and the result is OK.
NG: Self-diagnosis is carried out and the result is NG.
—: Self-diagnosis is not carried out.

When all SRT related self-diagnoses show OK results in a single cycle (Ignition OFF-ON-OFF), the SRT will

indicate “CMPLT”. 

 Case 1 above

When all SRT related self-diagnoses show OK results through several different cycles, the SRT will indicate

“CMPLT” at the time the respective self-diagnoses have at least one OK result. 

 Case 2 above

If one or more SRT related self-diagnoses show NG results in 2 consecutive cycles, the SRT will also indicate

“CMPLT”. 

 Case 3 above

The table above shows that the minimum number of cycles for setting SRT as “INCMP” is the number one (1)

for each self-diagnosis (Case 1 & 2) or the number two (2) for one of self-diagnoses (Case 3). However, in

preparation for the state emissions inspection, it is unnecessary for each self-diagnosis to be executed twice

(Case 3) for the following reasons:

• The SRT will indicate “CMPLT” at the time the respective self-diagnoses have one (1) OK result.

• The emissions inspection requires “CMPLT” of the SRT only with OK self-diagnosis results.

• During SRT driving pattern, the 1st trip DTC (NG) is detected prior to “CMPLT” of SRT and the self-diagnosis

memory must be erased from the ECM after repair.

• If the 1st trip DTC is erased, all the SRT will indicate “INCMP”.

NOTE:

SRT can be set as “CMPLT” together with the DTC(s). Therefore, DTC check must always be carried out

prior to the state emission inspection even though the SRT indicates “CMPLT”.

SRT Service Procedure

Self-diagnosis result

Example

Diagnosis

Ignition cycle 

 ON 

 OFF  

 ON 

 OFF  

 ON 

 OFF  

 ON 

All OK

Case 1

P0400

OK (1)

— (1)

OK (2)

— (2)

P0402

OK (1)

— (1)

— (1)

OK (2)

P1402

OK (1)

OK (2)

— (2)

— (2)

SRT of EGR

“CMPLT”

“CMPLT”

“CMPLT”

“CMPLT”

Case 2

P0400

OK (1)

— (1)

— (1)

— (1)

P0402

— (0)

— (0)

OK (1)

— (1)

P1402

OK (1)

OK (2)

— (2)

— (2)

SRT of EGR

“INCMP”

“INCMP”

“CMPLT”

“CMPLT”

NG exists

Case 3

P0400

OK

OK

P0402

P1402

NG

NG

NG

(Consecutive 

NG)

(1st trip)

DTC

1st trip DTC

1st trip DTC

DTC

(= MIL ON)

SRT of EGR

“INCMP”

“INCMP”

“INCMP”

“CMPLT”

2010 Pathfinder

EC-936

< ECU DIAGNOSIS >

[VK56DE]

ECM

If a vehicle has failed the state emissions inspection due to one or more SRT items indicating “INCMP”, review

the flowchart diagnostic sequence below.

How to Display SRT Status

 

WITH CONSULT-III

Selecting “SRT STATUS” in “DTC CONFIRMATION” mode with CONSULT-III.

For items whose SRT codes are set, “CMPLT” is displayed on the CONSULT-III screen; for items whose SRT

codes are not set, “INCMP” is displayed.

NOTE:

Though displayed on the CONSULT-III screen, “HO2S HTR” is not SRT item.

 

WITH GST

Selecting Service $01 with GST (Generic Scan Tool)

 NO TOOLS

A SRT code itself cannot be displayed, however only SRT status can.
1. Turn ignition switch ON and wait 20 seconds.
2. SRT status is indicated as shown below.

• When all SRT codes are set, MIL illuminates continuously.

JMBIA1574GB

2010 Pathfinder

ECM

EC-937

< ECU DIAGNOSIS >

[VK56DE]

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• When any SRT codes are not set, MIL will blink periodically for 10 seconds.

How to Set SRT Code

To set all SRT codes, self-diagnosis for the items indicated above must be performed one or more times. Each

diagnosis may require a long period of actual driving under various conditions.

 

WITH CONSULT-III

Perform corresponding DTC Confirmation Procedure one by one based on Performance Priority in the table

on “SRT Item”.

 

WITHOUT CONSULT-III

The most efficient driving pattern in which SRT codes can be properly set is explained below. The driving pat-

tern should be performed one or more times to set all SRT codes.

JMBIA1515GB

2010 Pathfinder

EC-938

< ECU DIAGNOSIS >

[VK56DE]

ECM

Driving Pattern

• The time required for each diagnosis varies with road surface conditions, weather, altitude, individual driving

habits, etc.

Zone A refers to the range where the time, required for the diagnosis under normal conditions*, is the short-

est.

Zone B refers to the range where the diagnosis can still be performed if the diagnosis is not completed within

zone A.

*: Normal conditions refer to the following:

PBIB3622E

2010 Pathfinder

ECM

EC-939

< ECU DIAGNOSIS >

[VK56DE]

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• Sea level

• Flat road

• Ambient air temperature: 20 - 30

°

C (68 - 86

°

F)

• Diagnosis is performed as quickly as possible under normal conditions.

Under different conditions [For example: ambient air temperature other than 20 - 30

°

C (68 - 86

°

F)], diagno-

sis may also be performed.

Pattern 1:

The engine is started at the engine coolant temperature of 

10 to 35

°

C (14 to 95

°

F)

(where the voltage between the ECM terminal 73 and ground is 3.0 - 4.3V).

The engine must be operated at idle speed until the engine coolant temperature is greater than 70

°

C

(158

°

F) (where the voltage between the ECM terminal 73 and ground is lower than 1.4V).

The engine is started at the fuel tank temperature of warmer than 0

°

C (32

°

F) (where the voltage

between the ECM terminal 107 and ground is less than 4.1V).

Pattern 2:

• When steady-state driving is performed again even after it is interrupted, each diagnosis can be conducted.

In this case, the time required for diagnosis may be extended.

Pattern 3:

• Operate vehicle following the driving pattern shown in the figure.

• Release the accelerator pedal during deceleration of vehicle speed

from 90 km/h (56 MPH) to 0 km/h (0 MPH).

Pattern 4:

• The accelerator pedal must be held very steady during steady-

state driving.

• If the accelerator pedal is moved, the test must be conducted

again.

*1: Depress the accelerator pedal until vehicle speed is 90 km/h (56

MPH), then release the accelerator pedal and keep it released for

more than 10 seconds. Depress the accelerator pedal until vehicle

speed is 90 km/h (56 MPH) again.

*2: Checking the vehicle speed with GST is advised.

Suggested Transmission Gear Position

Set the selector lever in the D position with the overdrive switch turned ON.

TEST VALUE AND TEST LIMIT

The following is the information specified in Service $06 of SAE J1979/ISO 15031-5.

The test value is a parameter used to determine whether a system/circuit diagnostic test is OK or NG while

being monitored by the ECM during self-diagnosis. The test limit is a reference value which is specified as the

maximum or minimum value and is compared with the test value being monitored.

These data (test value and test limit) are specified by On Board Monitor ID(OBDMID), Test ID (TID), Unit and

Scaling ID and can be displayed on the GST screen.

The items of the test value and test limit will be displayed with GST screen which items are provided by the

ECM. (eg., if bank 2 is not applied on this vehicle, only the items of bank 1 are displayed)

PBIB2244E

2010 Pathfinder

 

 

 

 

 

 

 

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