SB-10054468-9116

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9 15-13

9 15-13

SUBJECT

DATE

SPN 102/FMI 16 - GHG14

September 2013

Additions, Revisions, or Updates
Publication Number / Title

Platform

Section Title

Change

DDC-SVC-MAN-0084

DD Platform

SPN 102/FMI 16 GHG14

This is a section update.

All information subject to change without notice.

9 15-13

Copyright © 2013 DETROIT DIESEL CORPORATION

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2 SPN 102/FMI 16 – GHG14

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SPN 102/FMI 16 – GHG14

This diagnostic is typically Intake Manifold Pressure Too High
Check as follows:
Table 1.
SPN 102/FMI 16 - GHG14
Description

Intake Manifold Pressure Too High

Monitored Parameter

Intake Manifold Pressure
General Enabling Condition: Engine is in normal mode (not regen), steady state operation (highway
cruise operation)
Specific Enabling Conditions: See table below

Typical Enabling Conditions

Engine Parameter

Min

Max

Engine Speed (rpm)

1130

1810

Engine Torque (Nm)

1100

Intake Air Throttle Position (%)

5

Engine Coolant Outlet
Temperature (°C)

65

Barometric Pressure (mbar)

755

Ambient Temperature (°C)

-8

Engine Speed Gradient (RPM/s)

-10

10

Fuel Mass Gradient ((mg/
stroke)/s)

-10

10

Monitor Sequence

None

Execution Frequency

Continuous when enabling conditions met

Typical Duration

15 Seconds

Dash Lamps

MIL, CEL

Engine Reaction

None

Verification

Once engine is at standard operating temperature, drive at highway speed with loaded trailer above
1130 rpm continuously for five minutes.

1. Turn the ignition ON (key ON, engine OFF).
2. Check for other codes. Is SPN 51/FMI (any) also present?
a. Yes; repair those faults first.
b. No; Go to step 3.
3. Using DDDL/DDRS 7.10 or newer, compare inlet manifold pressure to barometric pressure.
4. Is the inlet manifold pressure within 10.3 kPa (1.5 psi) of barometric pressure?
a. Yes; Go to step 7.
b. No; Go to step 5.
5. Disconnect the inlet manifold pressure sensor harness connector.
6. Inspect the inlet manifold pressure sensor and harness connector for signs of damaged, bent, spread, corroded or
unseated (pushed out) pins and signs of moisture in the connector or wire damage near the connector.
a. If signs of damage are present, repair as necessary.
b. If no signs of damage are present, replace the inlet manifold pressure sensor. Refer to section "Installation of the
Intake Manifold Pressure/Temperature Sensor".
7. Check for turbo type.
a. If AT Engine, Go to step 8.
b. If TC Engine, Go to step 17.
8. Turn the ignition OFF.
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All information subject to change without notice.

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9. Ensure the wastegate solenoid has a dedicated air line from the vehicle primary air tank with a minimum pressure of
6.0 bar (87 psi). If the air line supplies other components, it will have to be altered. Is the air line dedicated and at a
minimum pressure of 6.0 bar (87 psi)?
a. Yes; Go to step 10.
b. No; Supply the wastegate solenoid with a dedicated air line from the vehicle primary air tank with a minimum
pressure of 6.0 bar (87 psi). Verify repairs.
10. Inspect the wastegate actuator and the plumbing to and from the actuator. Verify wastegate opens and closes.
a. If binding or damage is found, repair as necessary.
b. If no damage is found, Go to step 11.
11. Inspect the air line connection to the wastegate solenoid for leaks.
a. If there are leaks, repair or replace as necessary.
b. If there are no leaks, Go to step 12.
12. Turn the ignition ON (key ON, engine OFF).
13. Using DDDL/DDRS 7.10 or newer, activate wastegate control from Service Routines Activate Outputs Panel. Run
slide control up to 95% - (Click Set) Wastegate will open with air psi available. Does wastegate open when
commanded?
a. Yes; Go to step 14.
b. No; Go to step 15.
NOTE: No response at 50% - wastegate activates at 0% or 95%.
14. Move slide control down to 0. Does wastegate close when commanded?
a. Yes; Go to step 17.
b. No; Go to step 15.
15. Disconnect the Wastegate Solenoid harness connector.
16. Inspect the Wastegate Solenoid and harness connector for signs of damaged, bent, spread, corroded or unseated
(pushed out) pins and signs of moisture in the connector or wire damage near the connector.
a. If signs of damage are present, repair as necessary.
b. If no signs of damage are present, replace the wastegate solenoid.
Refer to section "Removal of the DD13 Wastegate Solenoid".
Refer to section "Removal of the GHG14 DD15 Asymmetrical Turbocharger Wastegate Solenoid".
17. Monitor Exhaust Gas Recirculation (EGR) delta p voltage (pin 109).
18. Is the EGR delta p voltage between 0.55 and 0.83 volts?
a. Yes; Go to step 21.
b. No; Go to step 19.
19. Remove the EGR delta p sensor from the mounting pad, leave electrical harness connected.
20. Is the EGR delta p voltage between 0.55 and 0.83 volts?
a. Yes; Go to step 21.
b. No; replace the EGR delta p sensor. Refer to section "Removal of the Delta P Sensor".
21. Turn the ignition OFF.
22. Inspect the EGR delivery pipe delta p pressure ports for blockage.
a. If excessive build up or blockage is found, clean the venturi pipe and reinstall the sensor.
b. If no damage is found, Go to step 23.
23. Remove the EGR cooler hot pipe, EGR crossover pipe and delivery pipe and inspect for excessive build - up or
blockage.
Refer to section "Removal of the Exhaust Gas Recirculation Hot Pipe".
Refer to section "Removal of the Exhaust Gas Recirculation Crossover Tube".
a. If excessive build up or blockage is found, clean piping and replace EGR cooler.
b. If there is no excessive build up or blockage, Go to step 24.
24. Disconnect the EGR valve actuator pull rod. Inspect the ball sockets on the pull rod for free movement.
a. If the sockets do not rotate or move freely, replace the EGR valve actuator pull rod.
For the DD13: Refer to section "Removal of the Exhaust Gas Recirculation Valve Actuator Pull Rod".
For the DD15 and DD16: Refer to section "Removal of the Exhaust Gas Recirculation Valve Actuator Pull Rod".
b. If the sockets move freely, Go to step 25.
All information subject to change without notice.

9 15-13

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2 SPN 102/FMI 16 – GHG14

NOTE: Some resistance is normal; however, the actuator should not bind in any particular spot.
25. Physically move the EGR butterfly from stop-to-stop to check for full travel (some drag is normal).Verify EGR valve
closes.
a. If the EGR butterfly does not move stop-to-stop, replace the EGR valve.
For the DD13: Refer to section "Removal of the Exhaust Manifold".
For the DD15 and DD16: Refer to section "Removal of the DD15 and DD16 Exhaust Gas Recirculation Valve".
b. If no problem is found, reconnect the EGR valve actuator pull rod to the EGR valve and EGR actuator. Clear
codes and retest vehicle. If fault returns, Go to step 26.
26. Disconnect the MCM2.1 120-pin connector.
27. Inspect the MCM2.1 120-pin connector and the 120-pin harness connector for signs of corrosion, spread, unseated
(pushed out) or damaged pins, connector seal for damage (signs of water or oil intrusion) or signs of wire damage.
a. If signs of damage are found, repair as necessary.
b. If no signs of damage, Go to step 28.
28. Install a test MCM2.1 and retest with verification cycle.
a. If code does not return, replace MCM2.1. Verify repairs.
b. If fault returns, contact Customer Support Center at 1-800-445-1980 for further instruction.

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All information subject to change without notice.

Copyright © 2013 DETROIT DIESEL CORPORATION 9 15-13