NHTSA ID Number: 10055464
Manufacturer Communication Number: SIB-3-23-14
TSB/Document Date: 2014-05-29
Summary
DETROIT: INFORMATION REGARDING DIAGNOSTICS IS UPDATED FOR INTAKE THROTTLE POSITION ABNORMAL RATE OF CHANGE AND DATA VALID BELOW NORMAL OPERATING RANGE (MODERATELY SEVERE LEVEL). MODEL GHG 14 DD PLATFORM. *PE
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TSB/Document ID: SIB-3-23-14
Replacement Service Bulletin Number:
MFR Communication Date: 2014-03-01
MFR Internal Campaign ID/Software Version:
Communication Type: Service Bulletin/Repair Instructions
NHTSA Components: ENGINE AND ENGINE COOLING:ENGINE:DIESEL
MFR Component System:
MFR Component Subsystem:
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3 23-14
1
3 23-14
SB-10055464-7245
SUBJECT
DATE
SPN 51/FMI 10 and 18
March 2014
Additions, Revisions, or Updates
Publication Number / Title
DDC-SVC-MAN-0084
Platform
Section Title
GHG14 DD
Platform
SPN 51/FMI 10
SPN 51/FMI 18
All information subject to change without notice.
3 23-14
Copyright © 2014 DETROIT DIESEL CORPORATION
Change
The diagnostics have been updated.
3
2 SPN 51/FMI 10 - GHG14
2
SPN 51/FMI 10 - GHG14
This diagnostic is typically Intake Throttle Position Abnormal Rate of Change.
This code sets when the Intake Throttle Valve (ITV) position is not within 30% of the commanded position during freezing
conditions.
Table 1.
SPN 51/FMI 10
Description
Intake Throttle Position Abnormal Rate Of Change
Monitored Parameter
Intake Throttle Valve (ITV)
Typical Enabling Conditions
Engine RPM = idle or higher
Monitor Sequence
None
Execution Frequency
Continuous when enabling conditions met
Typical Duration
Five seconds
Dash Lamps
None
Engine Reaction
No Derate
Verification
Engine RPM = idle or higher
Possible causes:
• Faulty ITV motor
• Faulty ITV position
• Frozen (ice buildup) ITV butterfly
4
All information subject to change without notice.
Copyright © 2014 DETROIT DIESEL CORPORATION 3 23-14
3 23-14
NOTE: With the new strategy when the ignition key is turned on, the Intake Throttle Valve (ITV) will cycle two full
times and then the ITV will be commanded short increments.
Check as follows:
1. Connect Diagnostic Link™. Go to step 2.
2. Turn ignition ON (key ON, engine OFF). Go to step 3.
3. Check the Engine Coolant Temperature and Ambient Air Temperature in the Motor Control Module (MCM) when the
fault code is set. Were temperatures below freezing when the code set?
a. Yes; Go to step 4.
b. No; Go to step 8.
4. Turn the ignition OFF? Go to step 5.
5. Remove the hose from the charge air cooler to the ITV. Go to step 6.
6. Inspect the hose and the ITV for signs of ice or moisture. Are there signs of ice or moisture?
a. Yes; clean the hose and ITV as necessary. Inspect the air intake system/air cleaner for signs of water intrusion.
Repair as necessary. Verify repair.
b. No; Go to step 7.
7. Turn the ignition ON (key ON, engine OFF). Go to step 8.
8. Remove the hose from the charge air cooler to the ITV. Go to step 9.
9. Use the Service Routines > Intake Throttle Valve in DiagnosticLink to command the Intake Throttle Valve fully open
and fully closed while watching the ITV flap. Does the ITV butterfly valve fully close and fully open when
commanded?
a. Yes; Go to step 10.
b. No; replace the ITV. Refer to section "Removal of the Intake Throttle Valve and Adaptor". Verify repair.
10. Using the Intake Throttle Valve service routine, command the ITV to 20% while monitoring the ITV actual position. Is
the actual valve position within +/- 5% of the commanded position?
a. Yes; Go to step 11.
b. No; replace the ITV. Refer to section "Removal of the Intake Throttle Valve and Adaptor". Verify repair.
11. Command the ITV to 50% while monitoring the ITV actual position. Is the actual valve position within +/- 5% of the
commanded position?
a. Yes; Go to step 12.
b. No; replace the ITV. Refer to section "Removal of the Intake Throttle Valve and Adaptor". Verify repair.
12. Command the ITV to 90% while monitoring the ITV actual position. Is the actual valve position within +/- 5% of the
commanded position?
a. Yes; Go to step 13.
b. No; replace the ITV. Refer to section "Removal of the Intake Throttle Valve and Adaptor". Verify repair.
13. Turn the ignition OFF. Go to step 14.
14. Disconnect and inspect the ITV 5-pin connector. Are there any damaged pins, spread pins or the retainer clip missing?
a. Yes; repair as necessary. Verify repair.
b. No; Go to step 15.
15. Measure the resistance across pins 4 and 5 of the component side of the ITV motor connector. Is the resistance less than
10 ohms?
a. Yes; Go to step 16.
b. No; replace the ITV due to a shorted motor. Refer to section "Removal of the Intake Throttle Valve and
Adaptor". Verify repair.
16. Install a test Motor Control Module (MCM). Go to step 17.
17. Road test the vehicle. Is code SPN 51/FMI 2 still present?
a. Yes; replace the ITV. Refer to section "Removal of the Intake Throttle Valve and Adaptor". Verify repair.
b. No; replace the MCM. Refer to section "Removal of the Motor Control Module". Verify repair.
All information subject to change without notice.
3 23-14
Copyright © 2014 DETROIT DIESEL CORPORATION
5
3 SPN 51/FMI 18 - GHG14
3
SPN 51/FMI 18 - GHG14
This diagnostic is typically Intake Throttle Position Data Valid but Below Normal Operating Range - Moderately Severe
Level.
Table 2.
SPN 51/FMI 18
Description
Intake Throttle Position Data Valid but Below Normal Operating
Range – Moderately Severe Level
Monitored Parameter
Intake Throttle Valve (ITV)
Typical Enabling Conditions
Engine RPM = idle or higher
Monitor Sequence
None
Execution Frequency
Continuous when enabling conditions met
Typical Duration
Five seconds
Dash Lamps
MIL
Engine Reaction
No Derate
Verification
Engine rpm = idle or higher
Possible causes:
• Damaged ITV butterfly flap
• Faulty ITV motor
• Faulty ITV sensor
Check as follows:
1. Remove the hose from the Charge Air Cooler (CAC) to the ITV.
6
All information subject to change without notice.
Copyright © 2014 DETROIT DIESEL CORPORATION 3 23-14
3 23-14
2. Visually inspect the ITV butterfly valve. Is there damage to the butterfly valve?
a. Yes; replace the ITV. Refer to section "Removal of the Intake Throttle Valve and Adaptor". Verify repair.
b. No; Go to step 3.
3. Connect Diagnostic Link™.
4. Turn the ignition ON (key ON, engine OFF).
5. Use the Service Routines > Intake Throttle Valve in DiagnosticLink to command the ITV fully open and fully closed
while watching the ITV flap. Does the ITV butterfly valve fully close and fully open when commanded?
a. Yes; Go to step 6.
b. No; replace the ITV. Refer to section "Removal of the Intake Throttle Valve and Adaptor". Verify repair.
6. Using the Intake Throttle Valve service routine, command the ITV to 20% while monitoring the ITV actual position. Is
the actual valve position within +/- 5% of the commanded position?
a. Yes; Go to step 7.
b. No; replace the ITV. Refer to section "Removal of the Intake Throttle Valve and Adaptor". Verify repair.
7. Command the ITV to 50% while monitoring the ITV actual position. Is the actual valve position within +/- 5% of the
commanded position?
a. Yes; Go to step 8.
b. No; replace the ITV. Refer to section "Removal of the Intake Throttle Valve and Adaptor". Verify repair.
8. Command the ITV to 90% while monitoring the ITV actual position. Is the actual valve position within +/- 5% of the
commanded position?
a. Yes; Go to step 9.
b. No; replace the ITV. Refer to section "Removal of the Intake Throttle Valve and Adaptor". Verify repair.
9. Turn the ignition OFF. Go to step 10.
10. Disconnect and inspect the ITV 5-pin connector. Are there any damaged pins, spread pins or the retainer clip missing?
a. Yes; repair as necessary. Verify repair.
b. No; Go to step 11.
11. Measure the resistance across pins 4 and 5, component side, of the ITV motor connector. Is the resistance less than 10
ohms?
a. Yes; Go to step 12.
b. No; replace the ITV due to a shorted motor. Refer to section "Removal of the Intake Throttle Valve and
Adaptor". Verify repair.
12. Install a test Motor Control Module (MCM). Go to step 13.
13. Road test the vehicle. Is code SPN 51/FMI 2 still present?
a. Yes; replace the ITV. Refer to section "Removal of the Intake Throttle Valve and Adaptor". Verify repair.
b. No; replace the MCM. Refer to section "Removal of the Motor Control Module". Verify repair.
All information subject to change without notice.
3 23-14
Copyright © 2014 DETROIT DIESEL CORPORATION
7
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