IK0800563 - LT with feature code 08TSJ Auto Start Stop Information and Troubleshooting Page 1 of 6

Countries:

CANADA, UNITED STATES

Document ID: IK0800563

Availability:

ISIS, FleetISIS, Body Builder,
IsSIR

Revision:

1

Major System:

ELECTRICAL SYSTEM

Created:

2/28/2018

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Last
Modified:

11/20/2018

Author:

Charles
Schroeder

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Title : LT with feature code 08TSJ Auto Start Stop Information and Troubleshooting
Applies To : LT with 08TSJ

Change Log
Please refer to the change log text box below for recent changes to this article:
11/20/2018 ‐ Updated feature information under 'Description'; There are separate features for Cummins engines and International
engines. Added information for sleeper auto climate which also interacts with auto start/stop.
03/05/2018 ‐ Initial aticle release





Description
Feature code 0008TSJ for auto start stop is a feature that will allow you to preset values in the body controller to allow the
truck to start when the battery voltage or engine oil temperature reaches the preset value. The engine will then run for a
preset time after battery voltage is within programmed value (if the engine started for low voltage) or the engine will run
until oil temperature reaches a programmed value (if the engine started for oil temperature).
Interlocks
(Conditions must be met to allow engine cranking)
•
•
•
•
•
•
•
•

Transmission is in neutral
Shifter is in neutral
Parking brake is set
Clutch is not depressed (for transmissions with clutch pedal)
Hood is closed (hood switch)
Vehicle Speed is less than 2 mph (3 km/h)
Ignition switch is in the OFF position
Auto Start Stop switch is turned ON within 30 seconds of key OFF

Factory Settings for 0597140 ‐ BCM PROG, AUTO START STOP with Switch Control,
with Oil Temperature Sensor With Cummins Engine
Starting for Low Voltage
• Low voltage threshold is 12.1v

Starting for Low Oil Temperature
• Low engine oil temp threshold is 50F

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IK0800563 - LT with feature code 08TSJ Auto Start Stop Information and Troubleshooting Page 2 of 6

• After battery voltage is under 12.1v for 30
seconds, the horn will chirp, and the engine will
start
• 5 seconds after the engine starts, the engine speed
will increase to 1000rpm
• Once battery voltage is 12.7v for 70 minutes
continuously AND engine oil is 100F, the engine
will return to idle
• The engine will idle for 90 seconds before engine
shutdown

• After engine oil temp is under 50F for 15 minutes,
the horn will chirp, and the engine will start
• 5 seconds after the engine starts, the engine speed
will increase to 1000rpm
• Once engine oil temp is 100F for 1 minute
continuously AND battery voltage is 12.7v, the
engine will return to idle
• The engine will idle for 90 seconds before engine
shutdown

Factory Settings for 0597250 ‐ BCM PROG, AUTO START STOP with Switch Control
with International A26 Engines
Starting for Low Voltage

• Low voltage threshold is 12.1v
• After battery voltage is under 12.1v for 30
seconds, the horn will chirp, and the engine will
start
• 5 seconds after the engine starts, the engine speed
will increase to 1000rpm
• Once battery voltage is 12.7v for 70 minutes
continuously AND engine oil is 150F, the engine
will return to idle
• The engine will idle for 90 seconds before engine
shutdown

Starting for Low Temperature
• Low temp threshold varies based on the ambient
temperature at the time auto start was enabled
• Time to start decreases at colder ambient
temperatures
• Timers vary from:
◦ 7 hours
◦ 4 hours
◦ 5.5 hours
◦ 3 hours
• 5 seconds after the engine starts, the engine speed
will increase to 1000rpm
• Once engine oil temp is 150F for 1 minute
continuously AND battery voltage is 12.7v, the
engine will return to idle
• The engine will idle for 90 seconds before engine
shutdown

Factory Settings for 0597317 ‐ BCM PROG, AUTO CLIMATE CONTROL for Sleeper
with ANY Engine
• When bunk temperature gets too warm or cold, this feature can request the engine to auto‐start to cool or
heat the sleeper
• This is an optional feature (16VKW) that also interacts with the Auto Start‐Stop system
Starting for High In‐Cab Temperature
• Bunk temperature reaches upper limit (5 degrees
above set temperature point) the engine will start
and run to cool the sleeper
• The engine will run for a 20 minutes, to cool the
sleeper.
• The engine will remain off for 15 minutes
minimum after it shuts down

When ambient temperatures are 90F or hotter, the
engine will run continuously to maintain sleeper
temperature

Starting for Low In‐Cab Temperature
• Bunk temperature reaches lower limit (5 degrees
below set temperature point) the engine will start
and run to warm the sleeper
• The engine will run for a 20 minutes, to warm the
sleeper.
• The engine will remain off for 15 minutes
minimum after it shuts down

When ambient temperatures are 15F or cooler, the
engine will run continuously to maintain sleeper
temperature

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IK0800563 - LT with feature code 08TSJ Auto Start Stop Information and Troubleshooting Page 3 of 6

• If ambient temperature falls under 90F, the engine
will shut down

• If ambient temperature rises above 15F, the
engine will shut down

Troubleshooting
The Body Control Module (BCM) handles all the inputs and controls the outputs for the auto start/stop system, including
engine cranking. This is a change from previous models with auto start/stop.
• Open Diamond Logic Builder (DLB) software and connect to the BCM. Open a session for the auto start/stop feature.
◦ For assistance in making a session in DLB follow IK2600008 ‐ How to Diagnose Electrical Problems with Diamond
Logic® Builder
• Review the all inputs that could prevent the system from operating properly
◦ Was the auto start/stop switched on within 30 seconds of key off?
◦ Is the LED indictor on the switch lit solid?
• Slow flashing (One flash per second) ‐ Interlock is not met
• Fast flashing (Two flashes per second) ‐ Error condition
◦ Is the hood closed, and hood switch has a good status in DLB?
◦ Is the park brake set, and has a good status in DLB?
◦ Is the clutch pedal released, and has a good status in DLB?
◦ Is the current gear Neutral?
• If the stalk shifter is left in gear the vehicle will not crank
◦ Does this vehicle see wheel based vehicle speed? (Transmission or ABS)
• Transmission output shaft speed (Vehicle_Speed)
• ABS wheel speed sensor (Front_Axle_Speed)
• If wheel based vehicle speed is seen during engine cranking, the system will stop engine cranking
• If wheel based vehicle speed is seen while running, the system will abort auto start and shut down
• If the system is shutting down prematurely, review parameters to verify they are set properly

Parameter Information
• Below are updated ECM and Body Controller Auto Start Stop Default Settings, these settings provide optimal
performance.
◦ If the customer has Idle Shutdown Enabled, then Idle Shutdown With Parking Brake Set and In PTO must be set to
Disable
◦ If Idle Shutdown shuts the engine off during an Auto Start event, the Auto Start/Stop system will be disabled.
◦ The Diamond Logic Builder (DLB) Parameter list is designed for optimal battery life.
◦ Changing the parameters below may result in poor system performance or shortened battery life.

LT with Cummins X15
Auto Start Stop Parameters
Idle Shutdown

Cummins INSITE
Enable

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IK0800563 - LT with feature code 08TSJ Auto Start Stop Information and Troubleshooting Page 4 of 6

• Idle Shutdown Coolant Temperature
Threshold

30

°F

• Percent Engine Load

90

Percent

• Time Before Shutdown

00:05:00

HH:MM:SS

• Ambient Temperature Override

Disable

• Greenhouse Gas Idle Shutdown

Disable

• Idle Shutdown With Parking Brake Set Disable
• In PTO

Disable

• Manual Override

Disable

• Shutdown Accessory Relay

Not Installed

• Warning Period

Disable

PTO

Enable

• PTO Speed 1 Device

0

• PTO Speed 2 Device

0

• PTO Speed 3 Device

0

• PTO Speed 4 Device

0

• PTO Speed 5 Device

0

• PTO Speed 6 Device

0

• PTO Speed 7 Device

0

• PTO Speed 8 Device

0

• Additional Switch Speed

1000

RPM

• Maximum Engine Load

800

Ft*lb

• Maximum Speed

1800

RPM

• Maximum Vehicle Speed

6

Mph

• Minimum Speed

500

RPM

100

Rpm/s

1000

RPM

650

RPM

1

• Ramp Rate

2
3

• Resume Switch Speed
• Set Switch Speed

4

SAE J1939 Multiplexing
• PTO On/Off Switch

↳
• PTO Set/Resume Switch

↳

Enable
Source Address

33 ‐ Body
Controller

Enable
Source Address

33 ‐ Body
Controller

1. Set 'Maximum Speed' to 1800 RPM so the ECM is not governed at 1000 RPM.
• This allows the engine to run at 1000 RPM or above, resulting in consistent
engine speed when running in Auto Start Stop.
• Maximum Speed cannot be less than 1200 RPM
2. Set 'Ramp Rate' to 100 rpm/s for a smoother transition of engine speed while
ramping.
3. Set 'Resume Switch' Speed to 1000 RPM
• If the momentary press for engine PTO does not happen, the ECM will still
ramp the engine speed to 1000 RPM
4. Set 'Set Switch Speed' to 650 RPM so the initial set message from the BCM to
ECM does not cause a sudden increase in engine speed.

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IK0800563 - LT with feature code 08TSJ Auto Start Stop Information and Troubleshooting Page 5 of 6

International Diamond Logic Builder (DLB) ‐ LT
BC PROG, AUTO START STOP with Switch
Control

0597041

Installed

• 2530 ‐ Wait To Start Bypass (Figure
1 below)

Checked ‐ Cummins
Only

On/Off

• 2536 ‐ Battery Low Trip Point

12.1

V

• 2537 ‐ Battery Run Time

70

min

• 2538 ‐ Engine Idle Delay

90

s

• 2541 ‐ Engine Ramp Delay

5

s

• 2571 ‐ Low Battery Time

30

s

• 2674 ‐ Auto SS Horn Enable

Checked

On/Off

• 2743 ‐ Battery High Trip Point

12.7

V

• 2825 ‐ Eng Oil Temp Enable

Checked

On/Off

• 2829 ‐ Auto SS Start Temperature

50

F

• 2830 ‐ Auto SS Stop Temperature

100.4

F

• 2836 ‐ Cruise Control Set Param

500

ms

• 2837 ‐ Cruise Control Enable Param

1000

ms

• 2838 ‐ Cruise Control Resume Param

1500

ms

• 2839 ‐ Key Chk Time

30

s

• 2861 ‐ Low Temperature Time

15

min

• 2862 ‐ High Temperature Time

1

min

• 2863 ‐ Auto Start Shutdown Time

20

min

• 3193 ‐ Bunk Temp Enable

Checked

On/Off

Figure 1 ‐ LT X15 Parameter

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IK0800563 - LT with feature code 08TSJ Auto Start Stop Information and Troubleshooting Page 6 of 6

Other Resources
• Master Service Information Page
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Copyright © 2018 Navistar, Inc.

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