Classification :

Referen ce:

EC98-001g

D at e:

NTB98-018g

June 7, 2013

SYSTEM READINESS TEST (SRT) DRIVE PATTERNS
This bulletin has been amended. Additional changes were made on page 9.
Please discard all previous versions of this bulletin.

APPLIED VEHICLES: 1996 and newer Model Years as required by State Emissions
Inspections Regulations.

SERVICE INFORMATION
As part of an enhanced emissions test for Inspection & Maintenance (I/M), some States
may require the System Readiness Test (SRT) status be checked.
•

The SRT is used to indicate whether the engine control module (ECM) has
completed self diagnosis of major emissions systems and components.

•

In these instances the State may require completion of the SRT before permitting
the emissions inspection to proceed.

The State Emissions Inspection Station may advise a Nissan customer to return to the
dealership for service due to one or more SRT items coming up “INCOMPLETE.” Use the
information in this Bulletin to help you “COMPLETE” the SRT.
•

In most cases the ECM will automatically complete its self diagnosis cycle during
normal vehicle usage, and the SRT status will indicate “COMPLETE” for each
applicable system.

•

Once indicating “COMPLETE,” the SRT status remains “COMPLETE” 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. In these cases the SRT will indicate
“INCOMPLETE” for these items.
NOTE: The SRT will also indicate “INCOMPLETE” if:
•

The self diagnosis memory is erased for any reason, or

•

The ECM memory power supply is interrupted for several hours.

Nissan Bulletins are intended for use by qualified technicians, not 'do-it-yourselfers'. Qualified technicians
are properly trained individuals who have the equipment, tools, safety instruction, and know-how to do a job
properly and safely. NOTE: If you believe that a described condition may apply to a particular vehicle, DO
NOT assume that it does. See your Nissan dealer to determine if this applies to your vehicle.
1/58

This bulletin contains information to help you perform a comprehensive road test (Drive
Pattern) that enables the ECM to complete the SRT.
•

A separate Drive Pattern sheet for each 1996 and 1997 vehicle variation is included
with this Bulletin.

•

For 1998 and newer vehicles, refer to the EC section of the appropriate Service
Manual for the required Drive Pattern. They are listed under On Board Diagnostic >
System Readiness Test.

NOTE: You must select the Drive Pattern that correctly corresponds with all
variables for the vehicle being serviced (i.e. model, model year, engine, emissions
certification, transmission, powertrain, and for 1996/1997 models, ECM part number.

NOTE: To ensure all ECM Self Test requirements are met, it is important to drive the
entire Drive Pattern even if only one SRT item indicates “INCOMPLETE.”

CLAIMS INFORMATION:
Refer to the current Warranty Flat Rate Manual for claims information.

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NTB98-018g

SERVICE PROCEDURE
SRT WORKFLOW
Vehicle Referred by IM Inspector

Start
Step 1
Check DTCs

DTC

Use ASIST to diagnosis
and repair DTCs

**Do Not Erase**

Step 2:
Check SRT Status

All SRTs “COMPLETE”

Step 3:
ID the Vehicle

Step 4:
Obtain ECM P/N
(1996 & 1997 only)

Step 5:
Perform Road Test
(Drive Pattern)

Step 6:
Recheck DTCs

DTC

Use ASIST to diagnosis
and repair DTCs

**Do Not Erase**

Step 7:
Confirm all SRTs
“COMPLETE”

All SRTs “COMPLETE”

END

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NTB98-018g

Step 1: Check for DTC
1. Use a CONSULT tool to check for any stored DTCs.
•

If any DTCs are stored they must be repaired at this time.

•

Refer to ASIST for diagnostic and repair information.
NOTE: Normal warranty coverage will apply for DTC repairs.

2. If no DTCs are stored, go to the next step.
NOTE: DO NOT touch “Erase” or you will lose previously completed SRTs.

Step 2: Check SRT Status
Check the SRT Status (Complete or Incomplete).
•

Use the appropriate CONSULT tool.

•

For older vehicles, a Generic Scan Tool may be needed to check SRT status.

NOTE: In some cases, the normal driving that occurs between the time the vehicle was
referred by the State Emissions Inspection Station and it is brought into the dealership
for SRT evaluation may allow the ECM to complete the SRTs. If this occurs, no further
action is necessary.
Always check SRT status before performing the SRT Drive Pattern.

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NTB98-018g

Step 3: Identify the Vehicle
You must select the Drive Pattern that correctly corresponds with all variables for the
vehicle being serviced:
Model__________________
Model Year______________
Engine__________________
Emissions certification______________________
•
•

Some models have different drive patterns depending on the emissions certification
(i.e. California, Federal, 50 State).
Check the under hood emissions label to determine the emissions certification for
the vehicle being inspected.

Transmission_____________________________
Powertrain (2WD or 4WD) ___________________
For 1996/1997 models, ECM part number)______________________________

Step 4: Obtain ECM Part Number (1996 and 1997 models only)
1. Use a CONSULT tool to obtain the ECM part number.

2. Write the ECM part number in the space provided above.

3. Compare the vehicles ECM part number with the list of ECM part numbers provided in
the Nissan SRT System Chart (page 10) to determine the Drive Pattern for the vehicle
being inspected.

NOTE: For 1996 and 1997 models; if the vehicles ECM part number does not match a
part number listed on the SRT System Chart for that vehicle, either 1) the vehicle was
identified incorrectly or 2) the vehicle has the wrong ECM installed. The SRT cannot be
completed with the incorrect ECM.

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NTB98-018g

Step 5: SRT Road Test (perform Drive Pattern)
To properly obtain SRT readings of “COMPLETE,” it is necessary to drive the vehicle under
the exact conditions required by the vehicle’s ECM.
Be sure to select the correct Drive Pattern. The SRTs will not complete if the
wrong drive pattern for that vehicle is used.

1. Select the Drive Pattern based on the Vehicle Identification (see Step 3).
•

For 1996 and 1997 vehicles:
¾ This bulletin contains a specific Driving Pattern for every 1996 and 1997
Nissan vehicle.
¾ Use the “Bookmark” on the left side of the ASIST screen to choose the
correct model and year.
¾ Verify that the vehicle ECM P/N matches EXACTLY an ECM P/N listed on the
Drive Pattern sheet you chose.
¾ Print the Drive Pattern to take with you.

•

For 1998 and newer vehicles, refer to the EC section in the appropriate Service
Manual for the required Drive Pattern. It is listed under On-Board Diagnostics >
System Readiness Test.
¾ Print the Drive Pattern to take with you.

2. Prior to driving the vehicle, review the Drive Pattern and prepare to complete it from
start to finish:
•

Review the Pre-Check items listed on the drive pattern and ensure all conditions are
met.

•

Determine the vehicle speeds required by the drive pattern.

•

Plan your route to minimize traffic and traffic signals that might interrupt the Drive
Pattern tasks.

•

Review the Drive Pattern section(s) that must be restarted if you are interrupted.

•

Do not use the ASCD (cruise control) during any section of the Drive Pattern that
contains the “No ASCD” symbol.

•

Some EVAP-equipped vehicles will require that fuel be added to the tank between
the first and second trip. Be prepared to purchase fuel or plan your route to
accommodate this step.

•

For these EVAP-equipped vehicles, begin the road test with less than ½ tank of fuel.
If the fuel level is greater than ½, more time may be required to complete the EVAP
sections of the Drive Pattern and you may not be able to add fuel as required.
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NTB98-018g

Step 5: SRT Road Test (continued)

3. Review the Drive Pattern for any input signals that need to be monitored during the
drive.
•

If needed, Connect a CONSULT tool to the vehicle to monitor required signals.

NOTE:
•

Monitor the Fuel Temperature if the EVAP SRT is “INCOMPLETE.” One part of the
EVAP SRT diagnostic logic requires a 3°C increase in fuel temperature from the
time the ignition key is turned to “ON” as part of the test criteria. Fluctuations in the
fuel temperature reading can extend the time required for the EVAP SRT to indicate
“COMPLETE.” If the fuel temperature change is not sufficient after completing the
SRT Drive pattern, idle the vehicle until a fuel temperature increase of at least 3°C is
noted or until the EVAP SRT indicates “COMPLETE.”

•

If the fuel temperature increases 3°C or more but the SRT still indicates
“INCOMPLETE,” the SRT Drive Pattern may need to be repeated.

4. Note the following items before starting the Drive Pattern:
•

IMPORTANT: Nissan requires using a driver and an assistant to conduct SRT
driving patterns. The assistant should read the Drive Pattern, CONSULT data, and
drive time and convey driving instruction to the driver. It is the driver’s responsibility
to observe and react to traffic conditions. Always drive the vehicle in a safe
manner and obey all traffic laws.

•

To ensure all ECM Self Test requirements are met, drive the ENTIRE pattern
whenever any SRT items indicate “INCOMPLETE.”

•

Some vehicles require that sections of the Drive Pattern be driven two times to
satisfy the “self diagnosis two trip logic”. For vehicles that require two trips, the
pre-check engine coolant temperature must be met before beginning Section 1 of
the second trip.

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NTB98-018g

5. Perform the Drive Pattern:
a. Make sure all Pre-Check conditions are met.
b. Drive the vehicle and carefully follow the specific instructions and time requirements
listed in each section of the Drive Pattern.

NOTE: If you monitor the (B/FUEL SCHDL):
•

The Base Fuel Schedule (B/FUEL SCHDL) is an indication of engine load.

•

It will be easier to match high B/FUEL SCHDL values when driving up slight hills
in the recommended gear range.

•

It will be easier to match low B/FUEL SCHDL values when driving down slight
hills in the recommended gear range.

•

Turning the A/C compressor ON will increase the B/FUEL SCHDL value, while
turning it OFF will decrease the B/FUEL SCHDL value.

Step 6: Recheck for DTC
Upon completion of the Drive Pattern, determine if any DTCs have been stored. Only in
rare cases will this occur.
•

If a DTC has been stored after completing the Drive Pattern, it must be repaired.
Refer to ASIST for diagnostic and repair information.
NOTE: Normal warranty coverage will apply for DTC repairs.

•

Once the DTC is repaired, erase the stored DTC. Turn the ignition OFF for 10
seconds, and then repeat the entire Drive Pattern (Step 5) to “COMPLETE” the
SRTs.

•

If no DTCs have been stored, DO NOT touch “Erase” or all SRT items will reset
to “INCOMPLETE.”

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NTB98-018g

Step 7: Confirm All SRTs “COMPLETE”
If all SRT items indicate “COMPLETE,” the inspection is complete.
•

If Catalyst and/or O2 Sensor Monitors show “INCOMPLETE” perform step A or B
below.

A. Check Self Learning Value (Long Term Fuel Trim (LTFT)) and A/F ALPHA
(Short Term Fuel Trim (STFT)). If either value is +10% or more above target of
100%, clear Self Learning Value.
•

Perform DTC diagnosis for P0171 or P0174 and check for the following
possible causes:
¾
¾
¾
¾
¾
¾
¾

Intake air leaks
Front heated oxygen sensors
Injectors
Exhaust gas leaks
Incorrect fuel pressure
Lack of fuel
Mass air flow sensor

B. Check Self Learning Value (Long Term Fuel Trim (LTFT)) and A/F ALPHA
(Short Term Fuel Trim (STFT)). If either value is -10% or more below target of
100%, clear Self Learning Value.
•

Perform DTC diagnosis for P0172 or P0175 and check for the following
possible causes:
¾
¾
¾
¾
¾
¾
¾

•

Intake air leaks
Front heated oxygen sensors
Injectors
Exhaust gas leaks
Incorrect fuel pressure
Lack of fuel
Mass air flow sensor

After repairs have been made, run the prescribed drive pattern and check that A/F
ALPHA is within ±10% of the target of 100% during the steady state portions of the
drive cycle. If it is not, then continue repairs. If it is, return to STEP 5.

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NTB98-018g

Nissan SRT System Chart (page 1)
1 trip or 2 trip SRT
Model
Altima
(Fed)
Altima
(Cal)
Altima
(Cal)
Altima

Model
Year
‘96

T/M

ECM Part No.23710-XXXXX

‘96

M/T
A/T
M/T

‘96

A/T

’97

M/T

5E400, 5E401, 5E402, 5E403, 5E404
5E410, 5E411, 5E412, 5E413, 5E414
5E500
5E501, 5E502, 5E503, 5E504
5E510
5E511, 5E512, 5E513, 5E514
5E700, 5E701, 5E702, 5E703, 5E704, 5E705,
5E720, 5E721, 5E722, 5E723, 5E724, 5E725
5E710, 5E711, 5E712, 5E713, 5E714, 5E715,
5E760, 5E761, 5E762, 5E763, 5E764, 5E765
5E800, 5E801, 5E802, 5E803, 5E804, 5E810,
5E811, 5E812, 5E813, 5E814, 5E860, 5E870
5E805, 5E806, 5E807, 5E808, 5E809, 5E815,
5E816, 5E817, 5E818, 5E819, 5E865, 5E875
54U00, 54U01, 54U02, 54U03, 54U04, 54U05,
54U06, 56U60, 56U61, 56U62, 56U63, 56U64,
56U66
54U10, 54U11, 54U12, 54U13, 54U14, 54U15,
54U16, 56U70, 56U71, 56U72, 56U73, 56U74,
56U76
0L700, 0L701, 0L702, 0L707, 0L708, 0L709,
0L760, 0L761, 0L762, 0L767, 0L768, 0L769
0L710, 0L711, 0L712, 0L717, 0L718, 0L719,
0L770, 0L771, 0L772, 0L777, 0L778, 0L779
0W000, 0W005, 0W060, 0W061, 0W063
0W010, 0W015, 0W065, 0W066, 0W067, 0W069
1W200, 1W201, 1W202, 1W203, 1W204, 1W260,
1W262
1W205, 1W206, 1W207, 1W208, 1W209, 1W265,
1W266, 1W268
1B000, 1B001, 1B002
1B010, 1B011, 1B012, 1B013, 1B014
0M220, 0M221, 0M224, 0M262, 0M263,
0M269, 0M270, 0M271, 0M272, 0M273,
0M274, 1M214, 1M217, 1M222, 1M565, 1M566
0M260, 0M261, 0M264, 0M279, 0M282, 0M283,
1M204, 1M216, 1M221, 1M520, 1M521
0M222, 0M223, 0M265, 0M266, 0M267, 0M268,
0M275, 0M276, 0M277, 0M278, 0M280, 0M284,
1M219, 1M223, 1M275, 1M575, 1M576, 1M580,
1M581
3M200, 3M202, 3M203, 3M204, 3M205, 3M206,
3M207, 3M208, 3M209, 3M260, 3M261, 3M270,
3M271, 3M300, 3M302, 3M303, 3M304, 3M305,
3M306, 3M307, 3M308, 3M309, 3M360, 3M361,
3M370, 3M371
3M210, 3M212, 3M213, 3M214, 3M215, 3M216,
3M217, 3M218, 3M219, 3M265, 3M266, 3M275,
3M276, 3M310, 3M312, 3M313, 3M314, 3M315,
3M316, 3M317, 3M318, 3M319, 3M365, 3M366,
3M375, 3M376

A/T
’97.5

M/T
A/T

Maxima

‘96

M/T
A/T

‘97

M/T
A/T

Pathfinder

‘96
‘97

M/T
A/T
M/T
A/T

Quest
Sentra-20
0SX
(GA16)

‘96
‘97
‘96

A/T
M/T

A/T

‘97

M/T

A/T

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Drive
Pattern
1
2