05 05-18

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05 05-18

SUBJECT

DATE

SPN 3563 HDEP Inlet manifold pressure Too Low

May 2018

Additions, Revisions, or Updates
Publication Number / Title

DDC-SVC-MAN-0084

Platform

Section Title

Change

EPA07/10/
GHG14 DD
Platform

SPN 3563/FMI 18

The diagnostic procedure has been rewritten using the procedure
from SPN 102/FMI 18. The diagnostic is the same.

DiagnosticLink users: Please update the troubleshooting guides in DiagnosticLink with this newest version. To update the
tool troubleshooting guide, open DiagnosticLink and from the Help – Troubleshooting Guides menu, select the appropriate
troubleshooting manual, then click Update.

All information subject to change without notice.

05 05-18

Copyright © 2018 DETROIT DIESEL CORPORATION

3

2 SPN 3563/FMI 18 - EPA07 - EPA10 - GHG14

2

SPN 3563/FMI 18 - EPA07 - EPA10 - GHG14

Inlet Manifold Pressure Low
Table 1.
SPN 3563/FMI 18
Description

This Fault Code Sets When the Intake Manifold Pressure is Lower
Than Expected While The Engine is Under a Load

Monitored Parameter

Intake Manifold Pressure

Typical Enabling Conditions

Engine Coolant Temperature greater than 65°C (149°F)

Monitor Sequence

None

Execution Frequency

Continuous When Enabling Conditions Met

Typical Duration

15 Seconds

Dash Lamps

MIL, CEL

Engine Reaction

None

Verification

Engine Coolant Greater than 65 °C (149°F)
Drive at Steady Highway Speed With Loaded Trailer
Engine rpm Greater than 1130 for a Minimum of Five Minutes

1. Connect DiagnosticLink ®.
2. Turn the ignition ON (key ON, engine OFF).
3. Check for multiple fault codes. Are there any intake manifold pressure circuit, air system or aftertreatment fault codes
present?
a. Yes; diagnose the other fault codes first.
b. No; Go to step 4.
4. Check the Motor Control Module (MCM) software level. Is the MCM software level 4.1.0.47 ZGS 2 or greater?
a. Yes; Go to step 5.
b. No; update the MCM software using the latest server information. Verify repair.
5. Remove and inspect the air filter. Is the air filter excessively dirty or restricted?
a. Yes; replace the air filter. Verify repair.
b. No; Go to step 6.
6. Visually inspect the air intake system for leaks or damaged components. Are there any damaged hoses, clamps or
components?
a. Yes; repair as necessary. Verify repair.
b. No; Go to step 7.
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.

4

All information subject to change without notice.

Copyright © 2018 DETROIT DIESEL CORPORATION

05 05-18

05 05-18

WARNING: ENGINE EXHAUST
To avoid injury from inhaling engine exhaust, always operate the engine in a well-ventilated area.
Engine exhaust is toxic.
7. Start and run the engine at idle.
WARNING: PERSONAL INJURY
To avoid injury when working on or near an operating engine, wear protective clothing, eye
protection, and hearing protection.
8. Visually inspect the exhaust manifold and turbocharger for leaks or damage. Are there any leaks or damage present?
a. Yes; repair as necessary.
b. No; Go to step 9.
9. Stop the engine.
10. Turn the ignition ON (key ON, engine OFF).
11. Compare the barometric pressure reading in DiagnosticLink to the local barometric pressure for your area. Is the
reading within .07 bar (1 psi)?
a. Yes; Go to step 12.
b. No; replace the MCM.
12. Using DiagnosticLink, compare the intake manifold pressure reading to the barometric pressure reading. Are the
readings within .10 bar (1.5 psi) of each other?
a. Yes; Go to step 15.
b. No; Go to step 13.
13. Turn the ignition OFF.
14. Disconnect and inspect the intake manifold pressure sensor electrical connector. Is there corrosion, fretting, or damage
present?
a. Yes; replace the electrical connector and intake manifold pressure sensor. Verify repair.
b. No; replace the intake manifold pressure sensor. Verify repair.
15. Pressure test the Charge Air Cooler (CAC). Refer to Original Equipment Manufacturer (OEM) literature for CAC
testing procedures. Does the CAC pass the pressure test?
a. Yes; Go to step 16.
b. No; replace the CAC. Refer to OEM literature for CAC removal and installation procedures. Verify repair.
16. Is the vehicle equipped with a DD15 AT or DD13 engine?
a. Yes; Go to step 17.
b. No; Go to step 42.
17. Inspect the turbocharger wastegate linkage. Is the wastegate link damaged?
a. Yes; replace the turbocharger.
For DD15 AT: Refer to section "Removal of the GHG14 DD15 Asymmetrical Turbocharger". Verify repair.
For DD13: Refer to section "Removal of the DD13 Turbocharger". Verify repair.
b. No; Go to step 19.
18. Check for air leaks at the wastegate actuator and airline. Are there any air leaks present?
a. Repair the air leaks as necessary. Verify repair.
b. No; Go to step 19.

All information subject to change without notice.

05 05-18

Copyright © 2018 DETROIT DIESEL CORPORATION

5

2 SPN 3563/FMI 18 - EPA07 - EPA10 - GHG14

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.
19. Start and run the engine until the vehicle air pressure reaches 827 kPa (120 psi). Does the vehicle air supply reach 827
kPa (120 psi)?
a. Yes; Go to step 20.
b. No; correct the low vehicle air pressure concern.
20. Stop the engine.
21. Turn the ignition ON (key ON, engine OFF).
22. Use Diagnostic link to activate the turbo control wastegate in the I/O tab. Command the turbo control to 90%. Does
the wastegate actuator move?
a. Yes; Go to step 42.
b. No; Go to step 23.
23. Drain the vehicle air tanks until the air pressure is zero psi. Refer to Original Equipment Manufacturers (OEM)
literature for air tank draining procedures.
24. Remove the plastic air supply line to the wastegate solenoid inlet port.

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All information subject to change without notice.

Copyright © 2018 DETROIT DIESEL CORPORATION

05 05-18

05 05-18

Table 2.

DD15 AT

DD13

25. Connect a suitable gauge that can read up to 1034 kPa (150 psi) to the wastegate solenoid.
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.
26. Start and run the engine until the vehicle air pressure reaches 827 kPa (120 psi). Does the gauge read a minimum of
621 kPa (90 psi)?
a. Yes; Go to step 27.
b. No; determine the cause of the lack of air pressure to the wastegate solenoid. Refer to OEM literature for
vehicle air system troubleshooting.
27. Turn the ignition OFF.
28. Drain the vehicle air tanks. Refer to Original Equipment Manufacturers (OEM) literature for air tank draining
procedures.
29. Connect the plastic air supply line back to the wastegate solenoid.
30. Remove the rubber air line at the turbocharger wastegate solenoid.

All information subject to change without notice.

05 05-18

Copyright © 2018 DETROIT DIESEL CORPORATION

7

2 SPN 3563/FMI 18 - EPA07 - EPA10 - GHG14

Table 3.

DD15 AT

DD13

31. Connect a suitable gauge that can read up to 689 kPa (100 psi) and fit a ¼ inch rubber air line to the wastegate
solenoid. Secure the rubber air line to the gauge and wastegate solenoid with clamps.
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.
32.
33.
34.
35.

Start and run the engine until the vehicle air pressure reaches 827 kPa (120 psi).
Stop the engine.
Turn the ignition ON (key ON, engine OFF).
Use DiagnosticLink to activate the turbo control wastegate in the I/O tab. Command the turbo control to 95%. Is the
reading on the gauge between 262 and 296 kPa (38 and 43 psi)?
a. Yes; Go to step 39.
b. No; Go to step 36.
36. Remove the rubber hose from the wastegate on the turbocharger.

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All information subject to change without notice.

Copyright © 2018 DETROIT DIESEL CORPORATION

05 05-18

05 05-18

Table 4.

DD15 AT

DD13

37. Use shop air to check for restrictions in the rubber hose. Are there any restrictions present?
a. Yes; replace the hose. Verify repair.
b. No; Go to step 38.
38. Disconnect and inspect the wastegate solenoid electrical connector. Is there corrosion, fretting or damage present?
a. Yes; repair as necessary. Verify repair.
b. No; replace the turbocharger wastegate solenoid.
For the DD13: Refer to section "Removal of the DD13 Wastegate Solenoid"
For the DD15: Refer to section "Removal of the GHG14 DD15 Asymmetrical Turbocharger Wastegate
Solenoid". Verify repair.
39. Is the vehicle equipped with a DD13 engine?
a. Yes; Go to step 40.
b. No; replace the turbocharger. For DD15 AT: Refer to section "Removal of the GHG14 DD15 Asymmetrical
Turbocharger". Verify repair.
40. Remove the turbocharger. Refer to section "Removal of the DD13 Turbocharger".
41. Remove the two wastegate retaining bolts on the turbocharger and move the wastegate arm. Does the wastegate arm
on the turbocharger side move?
a. Yes; determine if the turbocharger and/or the wastegate needs to be replaced. Verify repair.
Refer to section "Removal of the GHG14 DD13 Turbocharger Wastegate Actuator"
Refer to section "Inspection of the GHG14 DD13 Turbocharger Wastegate Actuator"
Refer to section "Installation and Adjustment of the GHG14 DD13 Turbocharger Wastegate Actuator"
b. No; replace the turbocharger. Refer to section "Installation of the DD13 Turbocharger". Verify repair.
42. Remove the clean air intake pipe from the turbocharger.
43. Inspect the turbocharger for damage. Is the turbocharger damaged?
a. Yes; determine the cause of the damage and replace the turbocharger. Refer to section "Removal of the DD15
and the DD16 Turbocharger". Verify repair.
b. No; Go to step 44.
44. Reinstall the clean air intake pipe to the turbocharger.
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.

All information subject to change without notice.

05 05-18

Copyright © 2018 DETROIT DIESEL CORPORATION

9

2 SPN 3563/FMI 18 - EPA07 - EPA10 - GHG14

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.
45. Start and run the engine until the engine coolant temperature is greater than 65°C (149°F).
WARNING: HOT EXHAUST
During parked regeneration the exhaust gases will be extremely HOT and could cause a fire if
directed at combustible materials. The vehicle must be parked outside.
46. Perform a parked regeneration.
NOTE: Normal DOC pressure is less than 10 kPa (1.5 psi) for a 1-Box™ emissions package and 13 kPa (1.9 psi)
for a Two-Box option.
47. Monitor the Diesel Oxidation Catalyst (DOC) inlet pressure reading. Does the DOC inlet pressure start out high and
stay high?
a. Yes; Go to step 48.
b. No; Go to step 49.
48. Is the DOC inlet pressure less than 20 kPa (2.9 psi)?
a. Yes; perform the DOC face plugging routine. Refer to section "EPA10 and GHG14 Diesel Oxidation Catalyst
Face Cleaning". Verify repair.
b. No; replace the DOCs due to the excessive restriction.
49. Did the DOC inlet pressure start high and then decrease?
a. Yes; the regeneration cleared the restriction in the DOC/DPF.
b. No; replace the turbocharger. For DD15 TC and DD16: Refer to section "Removal of the DD15 and the DD16
Turbocharger". Verify repair.

10

All information subject to change without notice.

Copyright © 2018 DETROIT DIESEL CORPORATION

05 05-18