NHTSA ID Number: 10161139
Manufacturer Communication Number: 0108-19 SPN 1188
TSB/Document Date: 2019-06-10
Summary
Service Information Bulletin
01 08-19
1
01 08-19
SUBJECT
DATE
SPN 1188 (MCM) (GHG17)
January 2019
Additions, Revisions, or Updates
Publication Number / Title
Platform
Section Title
Change
SPN 1188/FMI 7 - GHG17
SPN 1188/FMI 10 - GHG17
DDC-SVC-MAN-0200
GHG17
DD8
SPN 1188/FMI 11 - GHG17
Corrected steps that were out of order.
SPN 1188/FMI 14 - GHG17
SPN 1188/FMI 31 - GHG17
All information subject to change without notice.
01 08-19
Copyright © 2019 DETROIT DIESEL CORPORATION
3
2 SPN 1188/FMI 7 - GHG17
2
SPN 1188/FMI 7 - GHG17
Turbocharger Wastegate Actuator, Fail-safe Mode, Motor Off
Table 1.
SPN 1188/FMI 7
Description
This Fault Sets When the Motor Control Module Detects that the
Turbocharger Wastegate Position is Incorrect
Monitored Parameter
Turbocharger Wastegate Position
Typical Enabling Conditions
Engine Running, Turbocharger Wastegate Command
Monitor Sequence
Always When Typical Enabling Conditions Are Met
Execution Frequency
None
Typical Duration
Five Seconds
Dash Lamps
MIL, CEL
Engine Reaction
None
Verification
Engine Running, Perform Several Neutral Run-Ups
WARNING: PERSONAL INJURY
Diesel engine exhaust and some of its constituents are known to the State of California to cause
cancer, birth defects, and other reproductive harm.
• Always start and operate an engine in a well ventilated area.
• If operating an engine in an enclosed area, vent the exhaust to the outside.
• Do not modify or tamper with the exhaust system or emission control system.
WARNING: PERSONAL INJURY
To avoid injury before starting and running the engine, ensure the vehicle is parked on a level
surface, parking brake is set, and the wheels are blocked.
WARNING: ENGINE EXHAUST
To avoid injury from inhaling engine exhaust, always operate the engine in a well-ventilated area.
Engine exhaust is toxic.
Check as follows:
1. Turn the ignition OFF.
2. Remove the air filter assembly.
3. Visually inspect the turbocharger wastegate actuator assembly. Are there any components that can interfere with the
travel of the turbocharger wastegate actuator pull rod?
a. Yes; remove and install the components correctly.
b. No; Go to step 6.
4. Turn the ignition ON (key ON, engine OFF).
5. Disconnect the turbocharger actuator electrical connector.
6. Monitor the turbocharger wastegate actuator while the ignition is turned on. Does the turbocharger actuator move
when the ignition is turned to the on position?
a. Yes; Go to step 7.
b. No; replace the turbocharger wastegate actuator. Verify repair.
7. Remove the turbocharger.
4
All information subject to change without notice.
Copyright © 2019 DETROIT DIESEL CORPORATION
01 08-19
01 08-19
For the single stage turbocharger, Refer to section "Removal of the Turbocharger Assembly"
For the dual stage turbocharger, Refer to section "Removal of the Turbocharger Assembly"
8. Disconnect and inspect the turbocharger wastegate actuator pull rod from the turbocharger. Are the bearings in the pull
rod missing?
a. Yes; replace the turbocharger actuator pull rod and reinstall the turbocharger assembly. Verify repair.
b. No; Go to step 9.
9. Move the turbocharger actuator pull rod back and forth by hand. Does the wastegate in the turbocharger move?
a. Yes; replace the turbocharger wastegate actuator. Verify repair.
For the single stage turbocharger, Refer to section "Removal of the Turbocharger Wastegate Actuator"
For the dual stage turbocharger, Refer to section "Removal of the Turbocharger Wastegate Actuator"
b. No; replace the turbocharger. Verify repair.
For the single stage turbocharger, Refer to section "Removal of the Turbocharger Assembly"
For the dual stage turbocharger, Refer to section "Removal of the Turbocharger Assembly"
All information subject to change without notice.
01 08-19
Copyright © 2019 DETROIT DIESEL CORPORATION
5
3 SPN 1188/FMI 10 - GHG17
3
SPN 1188/FMI 10 - GHG17
Turbocharger Wastegate Actuator, Position Deviation Error 2
Table 2.
SPN 1188/FMI 10
Description
This Fault Sets When the Motor Control Module Detects that the
Turbocharger Wastegate Position is Incorrect
Monitored Parameter
Turbocharger Wastegate Position
Typical Enabling Conditions
Engine Running, Turbocharger Wastegate Command
Monitor Sequence
Always When Typical Enabling Conditions Are Met
Execution Frequency
None
Typical Duration
Five Seconds
Dash Lamps
MIL, CEL
Engine Reaction
None
Verification
Engine Running, Perform Several Neutral Run-Ups
WARNING: PERSONAL INJURY
Diesel engine exhaust and some of its constituents are known to the State of California to cause
cancer, birth defects, and other reproductive harm.
• Always start and operate an engine in a well ventilated area.
• If operating an engine in an enclosed area, vent the exhaust to the outside.
• Do not modify or tamper with the exhaust system or emission control system.
WARNING: PERSONAL INJURY
To avoid injury before starting and running the engine, ensure the vehicle is parked on a level
surface, parking brake is set, and the wheels are blocked.
WARNING: ENGINE EXHAUST
To avoid injury from inhaling engine exhaust, always operate the engine in a well-ventilated area.
Engine exhaust is toxic.
Check as follows:
1. Turn the ignition OFF.
2. Remove the air filter assembly.
3. Visually inspect the turbocharger wastegate actuator assembly. Are there any components that can interfere with the
travel of the turbocharger wastegate actuator pull rod?
a. Yes; remove and install the components correctly.
b. No; Go to step 4.
4. Turn the ignition ON (key ON, engine OFF).
5. Disconnect the turbocharger actuator electrical connector.
6. Monitor the turbocharger actuator assembly while reconnecting the electrical connector. Does the turbocharger
actuator move when the electrical connector is reconnected?
a. Yes; Go to step 7.
b. No; replace the turbocharger wastegate actuator. Verify repair.
6
All information subject to change without notice.
Copyright © 2019 DETROIT DIESEL CORPORATION
01 08-19
01 08-19
7. Remove the turbocharger.
For the single stage turbocharger, Refer to section "Removal of the Turbocharger Assembly"
For the dual stage turbocharger, Refer to section "Removal of the Turbocharger Assembly"
8. Disconnect and inspect the Turbocharger wastegate actuator pull rod from the turbocharger. Are the bearings in the
pull rod missing?
a. Yes; replace the turbocharger actuator pull rod and reinstall the turbocharger assembly. Verify repair.
b. No; Go to step 9.
9. Move the turbocharger actuator pull rod back and forth by hand. Does the wastegate in the turbocharger move?
a. Yes; replace the turbocharger wastegate actuator. Verify repair.
For the single stage turbocharger, Refer to section "Removal of the Turbocharger Wastegate Actuator"
For the dual stage turbocharger, Refer to section "Removal of the Turbocharger Wastegate Actuator"
b. No; replace the turbocharger. Verify repair.
For the single stage turbocharger, Refer to section "Removal of the Turbocharger Assembly"
For the dual stage turbocharger, Refer to section "Removal of the Turbocharger Assembly"
All information subject to change without notice.
01 08-19
Copyright © 2019 DETROIT DIESEL CORPORATION
7
4 SPN 1188/FMI 11 - GHG17
4
SPN 1188/FMI 11 - GHG17
Turbocharger Wastegate Actuator, Learn Span too Small Range 2
Table 3.
SPN 1188/FMI 11
Description
This Fault Sets When the Motor Control Module Detects that the
Turbocharger Wastegate Position is Incorrect
Monitored Parameter
Turbocharger Wastegate Position
Typical Enabling Conditions
Engine Running, Turbocharger Wastegate Command
Monitor Sequence
Always When Typical Enabling Conditions Are Met
Execution Frequency
None
Typical Duration
Five Seconds
Dash Lamps
MIL, CEL
Engine Reaction
None
Verification
Engine Running, Perform Several Neutral Run-Ups
WARNING: PERSONAL INJURY
Diesel engine exhaust and some of its constituents are known to the State of California to cause
cancer, birth defects, and other reproductive harm.
• Always start and operate an engine in a well ventilated area.
• If operating an engine in an enclosed area, vent the exhaust to the outside.
• Do not modify or tamper with the exhaust system or emission control system.
WARNING: PERSONAL INJURY
To avoid injury before starting and running the engine, ensure the vehicle is parked on a level
surface, parking brake is set, and the wheels are blocked.
WARNING: ENGINE EXHAUST
To avoid injury from inhaling engine exhaust, always operate the engine in a well-ventilated area.
Engine exhaust is toxic.
Check as follows:
1. Turn the ignition OFF.
2. Remove the air filter assembly.
3. Visually inspect the turbocharger wastegate actuator assembly. Are there any components that can interfere with the
travel of the turbocharger wastegate actuator pull rod?
a. Yes; remove and install the components correctly.
b. No; Go to step 4.
4. Turn the ignition ON (key ON, engine OFF).
5. Disconnect the turbocharger actuator electrical connector.
6. Monitor the turbocharger actuator assembly while reconnecting the electrical connector. Does the turbocharger
actuator move when the electrical connector is reconnected?
a. Yes; Go to step 7.
b. No; replace the turbocharger. Verify repair.
8
All information subject to change without notice.
Copyright © 2019 DETROIT DIESEL CORPORATION
01 08-19
01 08-19
7. Remove the turbocharger.
For the single stage turbocharger, Refer to section "Removal of the Turbocharger Assembly"
For the dual stage turbocharger, Refer to section "Removal of the Turbocharger Assembly"
8. Disconnect and inspect the turbocharger wastegate actuator pull rod from the turbocharger. Are the bearings in the pull
rod missing?
a. Yes; replace the turbocharger actuator pull rod and reinstall the turbocharger assembly. Verify repair.
b. No; Go to step 9.
9. Move the turbocharger actuator pull rod back and forth by hand. Does the wastegate in the turbocharger move?
a. Yes; replace the turbocharger wastegate actuator. Verify repair.
For the single stage turbocharger, Refer to section "Removal of the Turbocharger Wastegate Actuator"
For the dual stage turbocharger, Refer to section "Removal of the Turbocharger Wastegate Actuator"
b. No; replace the turbocharger. Verify repair.
For the single stage turbocharger, Refer to section "Removal of the Turbocharger Assembly"
For the dual stage turbocharger, Refer to section "Removal of the Turbocharger Assembly"
All information subject to change without notice.
01 08-19
Copyright © 2019 DETROIT DIESEL CORPORATION
9
5 SPN 1188/FMI 14 - GHG17
5
SPN 1188/FMI 14 - GHG17
Turbocharger Wastegate Actuator, Actuator Power Limited
Table 4.
SPN 1188/FMI 14
Description
This Fault Sets When the Motor Control Module Detects that the
Turbocharger Wastegate Position is Incorrect
Monitored Parameter
Turbocharger Wastegate Position
Typical Enabling Conditions
Engine Running, Turbocharger Wastegate Command
Monitor Sequence
Always When Typical Enabling Conditions Are Met
Execution Frequency
None
Typical Duration
Five Seconds
Dash Lamps
MIL, CEL
Engine Reaction
None
Verification
Engine Running, Perform Several Neutral Run-Ups
WARNING: PERSONAL INJURY
Diesel engine exhaust and some of its constituents are known to the State of California to cause
cancer, birth defects, and other reproductive harm.
• Always start and operate an engine in a well ventilated area.
• If operating an engine in an enclosed area, vent the exhaust to the outside.
• Do not modify or tamper with the exhaust system or emission control system.
WARNING: PERSONAL INJURY
To avoid injury before starting and running the engine, ensure the vehicle is parked on a level
surface, parking brake is set, and the wheels are blocked.
WARNING: ENGINE EXHAUST
To avoid injury from inhaling engine exhaust, always operate the engine in a well-ventilated area.
Engine exhaust is toxic.
Check as follows:
1. Turn the ignition OFF.
2. Remove the air filter assembly.
3. Visually inspect the turbocharger wastegate actuator assembly. Are there any components that can interfere with the
travel of the turbocharger wastegate actuator pull rod?
a. Yes; remove and install the components correctly.
b. No; Go to step 4.
4. Turn the ignition ON (key ON, engine OFF).
5. Disconnect the turbocharger actuator electrical connector.
6. Monitor the turbocharger actuator assembly while reconnecting the electrical connector. Does the turbocharger
actuator move when the electrical connector is reconnected?
a. Yes; Go to step 7.
b. No; replace the turbocharger wastegate actuator. Verify repair.
10
All information subject to change without notice.
Copyright © 2019 DETROIT DIESEL CORPORATION
01 08-19
01 08-19
7. Remove the turbocharger.
For the single stage turbocharger, Refer to section "Removal of the Turbocharger Assembly"
For the dual stage turbocharger, Refer to section "Removal of the Turbocharger Assembly"
8. Disconnect and inspect the Turbocharger wastegate actuator pull rod from the turbocharger. Are the bearings in the
pull rod missing?
a. Yes; replace the turbocharger actuator pull rod and reinstall the turbocharger assembly. Verify repair.
b. No; Go to step 9.
9. Move the turbocharger actuator pull rod back and forth by hand. Does the wastegate in the turbocharger move?
a. Yes; replace the turbocharger wastegate actuator. Verify repair.
For the single stage turbocharger, Refer to section "Removal of the Turbocharger Wastegate Actuator"
For the dual stage turbocharger, Refer to section "Removal of the Turbocharger Wastegate Actuator"
b. No; replace the turbocharger. Verify repair.
For the single stage turbocharger, Refer to section "Installation of the Turbocharger Assembly"
For the dual stage turbocharger, Refer to section "Installation of the Turbocharger Assembly"
All information subject to change without notice.
01 08-19
Copyright © 2019 DETROIT DIESEL CORPORATION
11
6 SPN 1188/FMI 31 - GHG17
6
SPN 1188/FMI 31 - GHG17
Turbocharger Wastegate Actuator, Position Deviation Error
Table 5.
SPN 1188/FMI 31
Description
This Fault Sets When the Motor Control Module Detects that the
Turbocharger Wastegate Position is Incorrect
Monitored Parameter
Turbocharger Wastegate Position
Typical Enabling Conditions
Engine Running, Turbocharger Wastegate Command
Monitor Sequence
Always When Typical Enabling Conditions Are Met
Execution Frequency
None
Typical Duration
Five Seconds
Dash Lamps
MIL, CEL
Engine Reaction
None
Verification
Engine Running, Perform Several Neutral Run-Ups
WARNING: PERSONAL INJURY
Diesel engine exhaust and some of its constituents are known to the State of California to cause
cancer, birth defects, and other reproductive harm.
• Always start and operate an engine in a well ventilated area.
• If operating an engine in an enclosed area, vent the exhaust to the outside.
• Do not modify or tamper with the exhaust system or emission control system.
WARNING: PERSONAL INJURY
To avoid injury before starting and running the engine, ensure the vehicle is parked on a level
surface, parking brake is set, and the wheels are blocked.
WARNING: ENGINE EXHAUST
To avoid injury from inhaling engine exhaust, always operate the engine in a well-ventilated area.
Engine exhaust is toxic.
Check as follows:
1. Turn the ignition OFF.
2. Remove the air filter assembly.
3. Visually inspect the turbocharger wastegate actuator assembly. Are there any components that can interfere with the
travel of the turbocharger wastegate actuator pull rod?
a. Yes; remove and install the components correctly.
b. No; Go to step 4.
4. Turn the ignition ON (key ON, Engine OFF).
5. Disconnect the turbocharger actuator electrical connector.
6. Monitor the turbocharger actuator assembly while reconnecting the electrical connector. Does the turbocharger
actuator move when the electrical connector is reconnected?
a. Yes; Go to step 7.
b. No; replace the turbocharger wastegate actuator. Verify repair.
7. Remove the turbocharger.
12
All information subject to change without notice.
Copyright © 2019 DETROIT DIESEL CORPORATION
01 08-19
01 08-19
For the single stage turbocharger, Refer to section "Removal of the Turbocharger Assembly"
For the dual stage turbocharger, Refer to section "Removal of the Turbocharger Assembly"
8. Disconnect and inspect the turbocharger wastegate actuator pull rod from the turbocharger. Are the bearings in the pull
rod missing?
a. Yes; replace the turbocharger actuator pull rod and reinstall the turbocharger assembly. Verify repair.
b. No; Go to step 9.
9. Move the turbocharger actuator pull rod back and forth by hand. Does the wastegate in the turbocharger move?
a. Yes; replace the turbocharger wastegate actuator. Verify repair.
For the single stage turbocharger, Refer to section "Removal of the Turbocharger Wastegate Actuator"
For the dual stage turbocharger, Refer to section "Removal of the Turbocharger Wastegate Actuator"
b. No; replace the turbocharger. Verify repair.
For the single stage turbocharger, Refer to section "Installation of the Turbocharger Assembly"
For the dual stage turbocharger, Refer to section "Installation of the Turbocharger Assembly"
All information subject to change without notice.
01 08-19
Copyright © 2019 DETROIT DIESEL CORPORATION
13
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