NHTSA ID Number: 10192192
Manufacturer Communication Number: NTB98018G
TSB/Document Date: 2021-05-10
Summary
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. Refer to this Bulletin for further details.
then cycle ignition switch
OFF for 10 seconds.
Restart engine and
immediately begin next
drive pattern section.
Allow engine to idle for
at least 10 minutes
4
ENGINE
COMPARTMENT
WARM-UP
Cruise at 50 - 60 MPH
Drive 3 minutes
5*
CATALYST
Do not decelerate for more
than 3 consecutive seconds.
Keep engine speed over
3,000 RPM. Allow road speed
to vary if necessary.
Selector lever: "D" (OD OFF)
A/C switch: ON
ENG. RPM: 2,000 - 2,200
Selector lever: "D" (OD ON)
B/F SCHDL:
More than 1.5 msec
Steady state cruise at 53 - 58 MPH
Use ASCD or hold accelerator
to keep road speed as steady
as possible.
Drive 3 minutes
6*
O2 SENSOR
Dark shading behind section number indicates this drive pattern section must be repeated, without turning the ignition off, if it is interrupted by releasing
the accelerator when not directed to do so.
If fuel level is greater than 1/2 more time may be required to complete EVAP sections of the drive pattern.
NOTE: It is better to perform this driving test when fuel level is less than 1/2.
Engine coolant
temperature
must be below
70˚C (158˚F)
before starting
engine.
Pre-check
One Trip Logic for all sections.
Drive all section one time.
ECM Part Numbers: 23710-1S710, -1S712
System Readiness Test Drive Pattern #30
Idle
1 minute
in park or
neutral.
Idle
1 minute
ASCD
A/C switch: OFF
Hold the accelerator
pedal as steady as
possible. Allow road
speed to change
if necessary.
Selector lever:
"D" (OD OFF)
Steady state cruise at
31 - 44 MPH
Drive 2 minutes
8*
End.
'96 Truck (2WD) A/T
ASCD
A/C switch: OFF
Do not completely
release accelerator.
Accelerate to 38 MPH
Decelerate to 31 MPH
Accelerate to 38 MPH
B/F SCHDL:
Less than 2.0 msec
Selector lever: "2"
ENG RPM:
Approx..3,000 RPM
Drive 2 minutes
7*
EVAP SYSTEM
Pattern #30; ’96 Truck (2WD) A/T
NTB98-018g
43/58
Start engine,
idle at least
1.5 minutes.
Drive 3 minutes
Idle
1.5 minutes
ASCD
A/C switch: ON
ENG. RPM:
1,200 - 1,600
Selector lever: "D" (OD ON)
B/F SCHDL: 2.3 - 2.8 msec
Hold recommended B/F
SCHDL: range. Allow road
speed to vary as necessary.
2
1
O2 Sensor
Heater
ENG. RPM:
1,800 - 3,000
Selector lever:
"D" (OD ON)
B/F SCHDL:
2.5 - 4.2 msec
Drive at:
55 - 75 MPH
Drive 1.5 minutes
3
*
1st Trip:
IGN switch "OFF"
10 seconds
(Not more than
5 minutes)
4
KEY
"OFF"
2nd Trip:
Turn ign.. off.
Add 4 gallons of fuel.
Do not decelerate for more
than 3 consecutive seconds.
Keep engine speed above
3,000 RPM. Allow road speed to
vary if necessary.
Selector lever:
"D" (OD OFF)
Cruise at 50 - 60 MPH
Drive 3 minutes
5
CATALYST
A/C switch: ON
ENG. RPM: 2,000 - 2,200
Selector lever: "D" (OD ON)
B/F SCHDL:
More than 1.5 msec
Steady state cruise at
53 - 58 MPH
Use ASCD or hold accelerator
to keep road speed as steady
as possible.
Drive 3 minutes
6
Dark shading behind section number indicates this drive pattern section must be repeated, without turning the ignition off, if it is interrupted by releasing
the accelerator when not directed to do so.
Idle
1 minute
ASCD
A/C switch: OFF
Do not completely
release accelerator.
Accelerate to 38 MPH
Decelerate to 31 MPH
Accelerate to 38 MPH
Hold the accelerator
pedal as steady as
possible. Allow speed
to change if necessary.
ASCD
A/C switch: OFF
Selector lever:
"D" (OD OFF)
B/F SCHDL:
Less than 2.0 msec
Drive 2 minutes
8*
Steady state cruise at
31 - 44 MPH
Idle
1 minute
in Park or
Neutral.
Idle
1 minute
Selector lever: "2"
ENG RPM:
Approx.
3,000 RPM
Drive 2 minutes
7*
EVAP SYSTEM
2nd trip:
End.
1st trip:
key off
then
repeat
1 - 8.
'96 Truck (2WD) A/T
Downshift, then completely
release accelerator more
than 5 seconds without
braking, then idle 1 minute.
Selector lever:
"D" (OD OFF)
Downshift
then decel.
O2 SENSOR
If fuel level is greater than 1/2 more time may be required to complete EVAP sections of the drive pattern. Also you may be unable to add fuel as required.
NOTE: It is better to perform this driving test when fuel level is less than 1/2.
Engine coolant
temperature
must be below
70˚C (158˚F)
before starting
engine for either
the first or
second trip.
Pre-check
All Items: Two Trip Logic. Drive all sections two times.
First Trip: Drive all sections 1 through 8 then turn ign. off and allow engine to cool below 70˚C. (158˚F).
Second Trip: Start engine, drive sections 1,2,3. Turn ign. off and add 4 gallons of fuel in section 4, then start engine and drive sections 5, 6, 7, 8.
ECM Part Numbers: 23710-1S302, -1S303, -1S308, -1S713, -1S714, -1S716, -1S768, -1S770, -1S771, -1S772, -1S781, -1S782
System Readiness Test Drive Pattern #31
Pattern #31; ’96 Truck (2WD) A/T
NTB98-018g
44/58
Start engine,
idle at least
1.5 minutes.
Drive 3 minutes
ASCD
A/C switch: ON
ENG. RPM:
1,800 - 2,200
Selector lever: "4th" or "5th"
B/F SCHDL: 1.5 - 3.2 msec
Hold recommended B/F
SCHDL: range. Allow road
speed to vary as necessary.
2
Idle
1.5 minutes
1
O2 Sensor
Heater
ENG. RPM:
1,800 - 3,000
Selector lever:
"5th"
B/F SCHDL:
2.0 - 3.2 msec
Drive at:
55 - 65 MPH
Drive 1.5 minutes
3
*
1st Trip:
IGN switch "OFF"
10 seconds
(Not more than
5 minutes)
4
KEY
"OFF"
2nd Trip:
Turn ign.. off.
Add 4 gallons of fuel.
Do not decelerate for more
than 3 consecutive seconds.
Keep engine speed above
3,000 RPM. Allow road speed to
vary if necessary.
Selector lever:
"4th"
Cruise at 50 - 60 MPH
Drive 3 minutes
5
CATALYST
A/C switch: ON
ENG. RPM: 2,300 - 2,500
Selector lever: "5th"
B/F SCHDL:
More than 1.5 msec
Steady state cruise at
53 - 58 MPH
Use ASCD or hold accelerator
to keep road speed as steady
as possible.
Drive 3 minutes
6
Dark shading behind section number indicates this drive pattern section must be repeated, without turning the ignition off, if it is interrupted by releasing
the accelerator when not directed to do so.
Idle
1 minute
ASCD
A/C switch: OFF
Hold the accelerator
pedal as steady as
possible. Allow speed
to change if necessary.
ASCD
A/C switch: OFF
Accelerate to 44 MPH
Decelerate to 38 MPH
Accelerate to 44 MPH
Do not completely
release accelerator.
Selector lever:
"4th"
B/F SCHDL:
Less than 2.0 msec
Drive 2 minutes
Steady state cruise at
31 - 44 MPH
Idle
1 minute
in Park or
Neutral.
Idle
1 minute
8*
Selector lever: "3rd"
ENG RPM:
Approx.
3,000 RPM
Drive 2 minutes
7*
EVAP SYSTEM
2nd trip:
End.
1st trip:
key off
then
repeat
1 - 8.
'97 Truck (2WD) M/T
Downshift, then completely
release accelerator more
than 5 seconds without
braking, then idle 1 minute.
Selector lever:
"4th"
Downshift
then decel.
O2 SENSOR
If fuel level is greater than 1/2 more time may be required to complete EVAP sections of the drive pattern. Also you may be unable to add fuel as required.
NOTE: It is better to perform this driving test when fuel level is less than 1/2.
Engine coolant
temperature
must be below
70˚C (158˚F)
before starting
engine for either
the first or
second trip.
Pre-check
All Items: Two Trip Logic. Drive all sections two times.
First Trip: Drive all sections 1 through 8 then turn ign. off and allow engine to cool below 70˚C. (158˚F).
Second Trip: Start engine, drive sections 1,2,3. Turn ign. off and add 4 gallons of fuel in section 4, then start engine and drive sections 5, 6, 7, 8.
ECM Part Numbers: 23710-1S300, -1S301, -1S306, -1S307, -1S704, -1S706, -1S708, -1S709, -1S717, -1S718, -1S719, -1S720, -1S721, -1S722, -1S723, 1S724
System Readiness Test Drive Pattern #32
Pattern #32; ’97 Truck (2WD) M/T
NTB98-018g
45/58
Start engine,
idle at least
1.5 minutes.
Drive 3 minutes
ASCD
A/C switch: ON
ENG. RPM:
1,200 - 1,600
Selector lever: "D" (OD ON)
- 6X better wear protection on critical engine parts than...
- 1.3X better sludge protection than industry standards*
- 3X Stronger against viscosity breakdown than leading full...
- Protection for 10,000 miles between oil changes
- Meets or exceeds the following specifications: API SP/SN...
- Formulated for engines with 75,000 miles or more, Valvoline...
- Delivers 20% better wear protection and 15% better sludge...
- Extra detergents safeguard against friction, corrosion and...
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TSB/Document ID: NTB98018G
Replacement Service Bulletin Number:
MFR Communication Date: 2013-06-07
MFR Internal Campaign ID/Software Version:
Communication Type: Service Bulletin/Repair Instructions
NHTSA Components: ELECTRICAL SYSTEM
MFR Component System:
MFR Component Subsystem:
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