9 06-15

9 06-15

1 9 06-15

SUBJECT

SPN 2659 - GHG14

Additions, Revisions, or Updates

DATE

September 2015

Publication Number / Title

DDC-SVC-MAN-0084

DDC-SVC-MAN-0191

Platform

DD Platform

GHG17 DD

Platform

Section Title

SPN 2659/FMI 0 -

GHG14

SPN 2659/FMI 18 -

GHG14

SPN 2659/FMI 0 -

GHG17

SPN 2659/FMI 18 -

GHG17

Change

The diagnostics for SPN 2659/FMI 18 are new to PSL and were previously only available in an Advanced Diagnostic procedure.

The diagnostic procedure for SPN 2659/FMI 0 have been updated.

The diagnostics for SPN 2659/FMI 18 are new to PSL and were previously only available in an Advanced Diagnostic procedure.

The diagnostic procedure for SPN 2659/FMI 0 have been updated.

All information subject to change without notice.

9 06-15 Copyright © 2015 DETROIT DIESEL CORPORATION

3

2 SPN 2659/FMI 0 - GHG14

2 SPN 2659/FMI 0 - GHG14

Exhaust Gas Recirculation Flow Target Error Diagnostic - High Flow

Table 1.

Description

Monitored Parameter

Typical Enabling Conditions

Monitor Sequence

Execution Frequency

Typical Duration

Dash Lamps

Engine Reaction

Verification

SPN 2659/FMI 0

This fault code sets when the difference between the actual EGR flow and the commanded EGR flow is higher than a calibrated threshold.

EGR Mass Flow

Desired EGR mass flow greater than .08, EGR in closed-loop control, CAC outlet temperature greater than 0°C (32°F), engine speed 1080 to 2500 rpm, engine torque 200 to 2500 N·m (148 to

1844 lb·ft), coolant temperature greater than 65°C (149°F), ambient temperature greater than -8°C (18°F) ambient, barometric pressure greater than 755 mbar (11 psi).

None

Always Enabled

20 seconds

MIL, CEL

25% derate

Start engine, warm up such that coolant temperature greater than

65°C (149°F), ensure ambient temperature greater than -8°C (18°F) ambient and ambient barometric pressure greater than 755 mbar (11 psi).

Check as follows:

1. Connect DiagnosticLink ®

.

2. Turn the ignition ON (key ON, engine OFF).

3. Check for multiple fault codes. Are any of the following fault codes present?

• SPN 411/FMI 2, FMI 3, FMI 4, FMI 13

• SPN 1636/FMI 3, FMI 4

• SPN 2791/FMI 2, FMI 7, FMI 9, FMI 11, FMI 12, FMI 13, FMI 14, FMI 16, FMI 18, FMI 31

• SPN 3563/FMI 3, FMI 4, FMI 10 a. Yes; diagnose the other fault codes first.

b. No; Go to step 4.

4. Check the DPF Zone; is the DPF zone zero?

a. Yes; Go to step 5.

b. No; perform a parked regeneration.

5. Monitor the EGR delta pressure voltage at Key ON, Engine OFF. Is the voltage between 0.55 and 0.83 volts?

a. Yes; Go to step 12.

b. No; Go to step 6.

6. Turn the ignition OFF.

7. Disconnect and inspect the EGR Delta Pressure sensor electrical connector. Is there damage, corrosion or fretting present?

a. Yes; replace the Delta Pressure sensor and the pigtail. Refer to section "Removal of the Delta P Sensor". Verify repair.

b. No; Go to step 8.

8. Remove and inspect the EGR Delta Pressure sensor ports. Is there a restriction or contamination present?

a. Yes; clean the Delta Pressure sensor and clean the ports in the venturi pipe. Refer to section "Cleaning of the

Exhaust Gas Recirculation Venturi Pipe Delta P Sensor Ports". Verify repair.

b. No; Go to step 9.

9. Reconnect the EGR Delta Pressure sensor connector while the sensor is still removed from the venturi pipe.

4

All information subject to change without notice.

Copyright © 2015 DETROIT DIESEL CORPORATION 9 06-15

9 06-15

10. Turn the ignition ON (key ON, engine OFF).

11. Monitor the EGR Delta Pressure voltage at Key ON, Engine OFF. Is the voltage between 0.55 and 0.83 volts?

a. Yes; clean the ports on the venturi pipe. Refer to section "Cleaning of the Exhaust Gas Recirculation Venturi Pipe

Delta P Sensor Ports". Verify repair.

b. No; replace the Delta Pressure sensor. Refer to section "Removal of the Delta P Sensor". Verify repair.

12. Compare the barometric pressure reading to the local barometric pressure for your area. Is the barometric pressure within 69 mbar (1 psi) of the barometric pressure for your area?

a. Yes; Go to step 13.

b. No; replace the MCM. Refer to section "Removal of the Motor Control Module". Verify repair.

13. Compare the Intake Manifold Pressure sensor reading to the Barometric pressure sensor reading. Is the Intake Manifold

Pressure sensor reading within 103 mbar (1.5 psi) of the Barometric pressure reading?

a. Yes; Go to step 15.

b. No; Go to step 14.

14. Disconnect and inspect the Intake Manifold Pressure sensor electrical connector. Is there damage, corrosion or fretting present?

a. Yes; repair as necessary.

b. No; replace the Intake Manifold Pressure sensor. Refer to section "Removal of the Intake Pressure/Temperature

Sensor". Verify repair.

15. Compare the intake manifold temperature to the Charge Air Cooler outlet temperature. Is the intake manifold temperature within plus or minus 10°C (18°F) of the Charge Air Cooler outlet temperature?

a. Yes; Go to step 17.

b. No; Go to step 16.

16. Disconnect and inspect the Intake Manifold Temperature sensor electrical connector. Is there any damage, corrosion or fretting present?

a. Yes; repair as necessary. Verify repair.

b. No; replace the Intake Manifold Temperature sensor. Refer to section "Removal of the Intake Manifold Air

Temperature Sensor". Verify repair.

17. Remove the EGR Delta Pressure sensor and inspect the ports. Is there a restriction or contamination present?

a. Yes; clean the Delta Pressure sensor and clean the ports in the venturi pipe. Refer to section "Cleaning of the

Exhaust Gas Recirculation Venturi Pipe Delta P Sensor Ports". Verify repair.

b. No; Go to step 18.

18. Remove and inspect the EGR hot pipe. Are there any restrictions present in the EGR hot pipe?

a. Yes; clean the EGR system.

Refer to section "Cleaning of the DD13 Exhaust Gas Recirculation System".

Refer to section "Cleaning of the Turbo Compound DD15 and DD16 Exhaust Gas Recirculation Systems". Then,

Go to step 19.

b. No; Go to step 19.

19. Move EGR pull rod back and forth while watching the EGR valve. Does the EGR flap move when the pull rod is moved back and forth?

a. Yes; replace the Delta p sensor. Refer to section "Removal of the Delta P Sensor". Verify repair.

b. No; replace the EGR valve. Verify repair.

Refer to section "Removal of the GHG14 DD15 AT Exhaust Gas Recirculation Valve/Hot Pipe".

Refer to section "Removal of the DD15 and DD16 Exhaust Gas Recirculation Valve".

Refer to section "Removal of the Exhaust Manifold" for the DD13 engine.

All information subject to change without notice.

9 06-15 Copyright © 2015 DETROIT DIESEL CORPORATION

5

3 SPN 2659/FMI 18 - GHG14

3 SPN 2659/FMI 18 - GHG14

Exhaust Gas Recirculation Flow Target Error Diagnostic - Low Flow

Table 2.

Description

Monitored Parameter

Typical Enabling Conditions

Monitor Sequence

Execution Frequency

Typical Duration

Dash Lamps

Engine Reaction

Verification

SPN 2659/FMI 18

This fault code sets when the difference between the actual EGR flow and the commanded EGR flow is lower than a calibrated threshold.

EGR Mass Flow

Desired EGR mass flow greater than .08, EGR in closed-loop control, CAC outlet temperature greater than 0°C (32°F), engine speed 1080 to 2500 rpm, engine torque 200 to 2500 N·m (148 to

1844 lb·ft), coolant temperature greater than 65°C (149°F), ambient temperature greater than -8°C (18°F) ambient, barometric pressure greater than 755 mbar (11 psi).

None

Always enabled.

20 seconds

MIL

None

Start engine, warm up so that coolant temperature is greater than

65°C (149°F), ensure ambient temperature greater than -8°C (18°F) ambient and ambient barometric pressure greater than 755 mbar (11 psi).

Check as follows:

1. Connect DiagnosticLink ®

.

2. Turn the ignition ON (key ON, engine OFF).

3. Check for multiple fault codes. Are any of the following fault codes present?

• SPN 411/FMI 2, FMI 3, FMI 4, FMI 13

• SPN 1636/FMI 3, FMI 4

• SPN 2791/FMI 2, FMI 7, FMI 9, FMI 11, FMI 12, FMI 13, FMI 14, FMI 16, FMI 18, FMI 31

• SPN 3563/FMI 3, FMI 4, FMI 10 a. Yes; diagnose the other fault codes first.

b. No; Go to step 4.

4. Is the vehicle equipped with a DD13 engine?

a. Yes; Go to step 5.

b. No; Go to step 6.

5. Check the MCM software level. Is the MCM software level 4.1.0.47 or greater?

a. Yes; Go to step 6.

b. No; update the MCM software level using the latest server information. Perform the verification procedure. If the

fault returns, Go to step 6.

6. Check the DPF Zone; is the DPF zone zero?

a. Yes; Go to step 7.

b. No; perform a parked regeneration.

7. Monitor the EGR delta pressure voltage at Key ON, Engine OFF. Is the voltage between 0.55 and 0.83 volts?

a. Yes; Go to step 14.

b. No; Go to step 8.

8. Turn the ignition OFF.

9. Disconnect and inspect the EGR delta pressure sensor electrical connector. Is there damage, corrosion or fretting present?

6

All information subject to change without notice.

Copyright © 2015 DETROIT DIESEL CORPORATION 9 06-15

9 06-15 a. Yes; replace the delta pressure sensor and the pigtail. Refer to section "Removal of the Delta P Sensor". Verify repair.

b. No; Go to step 10.

10. Remove the EGR delta pressure sensor and inspect the ports. Refer to section "Removal of the Delta P Sensor". Is there a restriction or contamination present?

a. Yes; clean the delta pressure sensor and clean the ports in the venturi pipe.

b. No; Go to step 11.

11. Reconnect the EGR delta pressure sensor connector while the sensor is still removed from the venturi pipe.

12. Turn the ignition ON (key ON, engine OFF).

13. Monitor the EGR delta pressure voltage at Key ON, Engine Off. Is the voltage between 0.55 and 0.83 volts?

a. Yes; clean the ports on the venturi pipe.

b. No; replace the Delta Pressure sensor. Refer to section "Installation of the Delta P Sensor". Verify repair.

14. Compare the barometric pressure reading to the local barometric pressure for your area. Is the barometric pressure within 69 mbar (1 psi) of the barometric pressure for your area?

a. Yes; Go to step 15.

b. No; replace the MCM. Refer to section "Removal of the Motor Control Module". Verify repair.

15. Compare the Intake Manifold Pressure sensor reading to the Barometric pressure sensor reading. Is the Intake Manifold

Pressure sensor reading within 103 mbar (1.5 psi) of the Barometric pressure reading?

a. Yes; Go to step 17.

b. No; Go to step 16.

16. Disconnect and inspect the Intake Manifold Pressure sensor electrical connector. Is there damage, corrosion or fretting present?

a. Yes; repair as necessary.

b. No; replace the Intake Manifold Pressure sensor. Refer to section "Removal of the Intake Pressure/Temperature

Sensor". Verify repair.

17. Compare the intake manifold temperature to the Charge Air Cooler outlet temperature. Is the intake manifold temperature within plus or minus 10°C (18°F) of the Charge Air Cooler outlet temperature?

a. Yes; Go to step 19.

b. No; Go to step 18.

18. Disconnect and inspect the Intake Manifold Temperature sensor electrical connector. Is there any damage, corrosion or fretting present?

a. Yes; repair as necessary. Verify repair.

b. No; replace the Intake Manifold Temperature sensor. Refer to section "Removal of the Intake Manifold Air

Temperature Sensor". Verify repair.

19. Remove the EGR Delta Pressure sensor and inspect the ports. Is there a restriction or contamination present?

a. Yes; clean the Delta Pressure sensor and clean the ports in the venturi pipe. Refer to section "Cleaning of the

Exhaust Gas Recirculation Venturi Pipe Delta P Sensor Ports". Verify repair.

b. No; Go to step 20.

20. Remove and inspect the EGR hot pipe. Refer to section "Removal of the Exhaust Gas Recirculation Hot Pipe". Are there any restrictions present in the EGR hot pipe?

a. Yes; clean the EGR system. Verify repair.

Refer to section "Cleaning of the DD13 Exhaust Gas Recirculation System".

Refer to section "Cleaning of the Turbo Compound DD15 and DD16 Exhaust Gas Recirculation Systems".

Refer to section "Cleaning of the GHG14 DD15 Asymmetrical Turbocharger Exhaust Gas Recirculation

System".

b. No; Go to step 21.

21. Move EGR pull rod back and forth by hand while watching the EGR valve. Does the EGR flap move when the pull rod is moved back and forth?

a. Yes; Go to step 22.

b. No; replace the EGR valve. Verify repair.

Refer to section "Removal of the GHG14 DD15 AT Exhaust Gas Recirculation Valve/Hot Pipe".

Refer to section "Removal of the DD15 and DD16 Exhaust Gas Recirculation Valve".

Refer to section "Removal of the Exhaust Manifold" for the DD13 engine.

All information subject to change without notice.

9 06-15 Copyright © 2015 DETROIT DIESEL CORPORATION

7

3 SPN 2659/FMI 18 - GHG14

22. Remove and inspect the EGR crossover tube, mixer pipe and venturi pipe. Are there any restrictions present?

a. Yes; clean the EGR system. Verify repair.

Refer to section "Cleaning of the DD13 Exhaust Gas Recirculation System".

Refer to section "Cleaning of the Turbo Compound DD15 and DD16 Exhaust Gas Recirculation Systems".

b. No; Go to step 23.

23. Inspect the EGR cooler. Are there any restrictions present in the EGR cooler?

a. Yes; clean the EGR system. Verify repair.

Refer to section "Cleaning of the DD13 Exhaust Gas Recirculation System".

Refer to section "Cleaning of the Turbo Compound DD15 and DD16 Exhaust Gas Recirculation Systems".

Refer to section "Cleaning of the GHG14 DD15 Asymmetrical Turbocharger Exhaust Gas Recirculation

System".

b. No; replace the Delta P sensor. Refer to section "Removal of the Delta P Sensor". Verify repair.

8

All information subject to change without notice.

Copyright © 2015 DETROIT DIESEL CORPORATION 9 06-15

9 06-15

4 SPN 2659/FMI 0 - GHG17

Exhaust Gas Recirculation Flow Target Error Diagnostic - High Flow

Table 3.

Description

Monitored Parameter

Typical Enabling Conditions

Monitor Sequence

Execution Frequency

Typical Duration

Dash Lamps

Engine Reaction

Verification

SPN 2659/FMI 0

This fault code sets when the difference between the actual EGR flow and the commanded EGR flow is higher than a calibrated threshold.

EGR Mass Flow

Desired EGR mass flow greater than .08, EGR in closed-loop control, CAC outlet temperature greater than 0°C (32°F), engine speed 1080 to 2500 rpm, engine torque 200 to 2500 N·m (148 to

1844 lb·ft), coolant temperature greater than 65°C (149°F), ambient temperature greater than -8°C (18°F) ambient, barometric pressure greater than 755 mbar (11 psi).

None

Always Enabled.

20 seconds

MIL, CEL

25% derate

Start engine, warm up such that coolant temperature greater than

65°C (149°F), ensure ambient temperature greater than -8°C (18°F) ambient and ambient barometric pressure greater than 755 mbar (11 psi).

Check as follows:

1. Connect DiagnosticLink ®

.

2. Turn the ignition ON (key ON, engine OFF).

3. Check for multiple fault codes. Are any of the following fault codes present?

• SPN 411/FMI 2, FMI 3, FMI 4, FMI 13

• SPN 1636/FMI 3, FMI 4

• SPN 2791/FMI 2, FMI 7, FMI 9, FMI 11, FMI 12, FMI 13, FMI 14, FMI 16, FMI 18, FMI 31

• SPN 3563/FMI 3, FMI 4, FMI 10 a. Yes; diagnose the other fault codes first.

b. No; Go to step 4.

4. Check the DPF Zone; is the DPF zone zero?

a. Yes; Go to step 5.

b. No; perform a parked regeneration.

5. Monitor the EGR delta pressure voltage at Key ON, Engine OFF. Is the voltage between 0.55 and 0.83 volts?

a. Yes; Go to step 12.

b. No; Go to step 6.

6. Turn the ignition OFF.

7. Disconnect and inspect the EGR Delta Pressure sensor electrical connector. Is there damage, corrosion or fretting present?

a. Yes; replace the Delta Pressure sensor and the pigtail. Refer to section " Removal of the Delta P Sensor ". Verify repair.

b. No; Go to step 8.

8. Remove and inspect the EGR Delta Pressure sensor ports. Is there a restriction or contamination present?

a. Yes; clean the Delta Pressure sensor and clean the ports in the venturi pipe. Refer to section " Cleaning of the

Exhaust Gas Recirculation Venturi Pipe Delta P Sensor Ports ". Verify repair.

b. No; Go to step 9.

All information subject to change without notice.

9 06-15 Copyright © 2015 DETROIT DIESEL CORPORATION

9

4 SPN 2659/FMI 0 - GHG17

9. Reconnect the EGR Delta Pressure sensor connector while the sensor is still removed from the venturi pipe.

10. Turn the ignition ON (key ON, engine OFF).

11. Monitor the EGR Delta Pressure voltage at Key ON, Engine OFF. Is the voltage between 0.55 and 0.83 volts?

a. Yes; clean the ports on the venturi pipe. Refer to section " Cleaning of the Exhaust Gas Recirculation Venturi

Pipe Delta P Sensor Ports ". Verify repair.

b. No; replace the Delta Pressure sensor. Refer to section " Removal of the Delta P Sensor ". Verify repair.

12. Compare the barometric pressure reading to the local barometric pressure for your area. Is the barometric pressure within 69 mbar (1 psi) of the barometric pressure for your area?

a. Yes; Go to step 13.

b. No; replace the MCM. Refer to section " Removal of the Motor Control Module ". Verify repair.

13. Compare the Intake Manifold Pressure sensor reading to the Barometric pressure sensor reading. Is the Intake Manifold

Pressure sensor reading within 103 mbar (1.5 psi) of the Barometric pressure reading?

a. Yes; Go to step 15.

b. No; Go to step 14.

14. Disconnect and inspect the Intake Manifold Pressure sensor electrical connector. Is there damage, corrosion or fretting present?

a. Yes; repair as necessary.

b. No; replace the Intake Manifold Pressure sensor. Refer to section " Removal of the Intake Pressure/Temperature

Sensor" . Verify repair.

15. Compare the intake manifold temperature to the Charge Air Cooler outlet temperature. Is the intake manifold temperature within plus or minus 10°C (18°F) of the Charge Air Cooler outlet temperature?

a. Yes; Go to step 17.

b. No; Go to step 16.

16. Disconnect and inspect the Intake Manifold Temperature sensor electrical connector. Is there any damage, corrosion or fretting present?

a. Yes; repair as necessary. Verify repair.

b. No; replace the Intake Manifold Temperature sensor. Refer to section " Removal of the Intake Manifold Air

Temperature Sensor ". Verify repair.

17. Remove the EGR Delta Pressure sensor and inspect the ports. Is there a restriction or contamination present?

a. Yes; clean the Delta Pressure sensor and clean the ports in the venturi pipe. Refer to section " Cleaning of the

Exhaust Gas Recirculation Venturi Pipe Delta P Sensor Ports ". Verify repair.

b. No; Go to step 18.

18. Remove and inspect the EGR hot pipe. Are there any restrictions present in the EGR hot pipe?

a. Yes; clean the EGR system.

Refer to section "Cleaning of the DD13 Exhaust Gas Recirculation System".

Refer to section "Cleaning of the Turbo Compound DD15 and DD16 Exhaust Gas Recirculation Systems".

Then Go to step 19.

b. No; Go to step 19.

19. Move EGR pull rod back and forth while watching the EGR valve. Does the EGR flap move when the pull rod is moved back and forth?

a. Yes; replace the Delta p sensor. Refer to section " Removal of the Delta P Sensor ". Verify repair.

b. No; replace the EGR valve. Verify repair.

Refer to section "Removal of the GHG17 DD15 AT Exhaust Gas Recirculation Valve/Hot Pipe".

Refer to section "Removal of the DD15 and DD16 Exhaust Gas Recirculation Valve".

Refer to section "Removal of the Exhaust Manifold" for the DD13 engine".

10

All information subject to change without notice.

Copyright © 2015 DETROIT DIESEL CORPORATION 9 06-15

9 06-15

5 SPN 2659/FMI 18 - GHG17

Exhaust Gas Recirculation Flow Target Error Diagnostic - Low Flow

Table 4.

Description

Monitored Parameter

Typical Enabling Conditions

Monitor Sequence

Execution Frequency

Typical Duration

Dash Lamps

Engine Reaction

Verification

SPN 2659/FMI 18

This fault code sets when the difference between the actual EGR flow and the commanded EGR flow is lower than a calibrated threshold.

EGR Mass Flow

Desired EGR mass flow greater than .08, EGR in closed-loop control, CAC outlet temperature greater than 0°C (32°F), engine speed 1080 to 2500 rpm, engine torque 200 to 2500 N·m (148 to

1844 lb·ft), coolant temperature greater than 65°C (149°F), ambient temperature greater than -8°C (18°F) ambient, barometric pressure greater than 755 mbar (11 psi).

None

Always enabled.

20 seconds

MIL

None

Start engine, warm up so that coolant temperature is greater than

65°C (149°F), ensure ambient temperature greater than -8°C (18°F) ambient and ambient barometric pressure greater than 755 mbar (11 psi).

1. Connect DiagnosticLink ®

.

2. Turn the ignition ON (key ON, engine OFF).

3. Check for multiple fault codes. Are any of the following fault codes present?

• SPN 411/FMI 2, FMI 3, FMI 4, FMI 13

• SPN 1636/FMI 3, FMI 4

• SPN 2791/FMI 2, FMI 7, FMI 9, FMI 11, FMI 12, FMI 13, FMI 14, FMI 16, FMI 18, FMI 31

• SPN 3563/FMI 3, FMI 4, FMI 10 a. Yes; diagnose the other fault codes first.

b. No; Go to step 4.

4. Is the vehicle equipped with a DD13 engine?

a. Yes; Go to step 5.

b. No; Go to step 6.

5. Check the MCM software level. Is the MCM software level 4.1.0.47 or greater?

a. Yes; Go to step 6.

b. No; update the MCM software level using the latest server information. Perform the verification procedure. If the

fault returns, Go to step 6.

6. Check the DPF Zone; is the DPF zone zero?

a. Yes; Go to step 7.

b. No; perform a parked regeneration.

7. Monitor the EGR delta pressure voltage at Key ON, Engine OFF. Is the voltage between 0.55 and 0.83 volts?

a. Yes; Go to step 14.

b. No; Go to step 8.

8. Turn the ignition OFF.

9. Disconnect and inspect the EGR delta pressure sensor electrical connector. Is there damage, corrosion or fretting present?

All information subject to change without notice.

9 06-15 Copyright © 2015 DETROIT DIESEL CORPORATION

11

5 SPN 2659/FMI 18 - GHG17 a. Yes; replace the delta pressure sensor and the pigtail. Refer to section " Removal of the Delta P Sensor ". Verify repair.

b. No; Go to step 10.

10. Remove the EGR delta pressure sensor and inspect the ports. Refer to section " Removal of the Delta P Sensor ". Is there a restriction or contamination present?

a. Yes; clean the delta pressure sensor and clean the ports in the venturi pipe.

b. No; Go to step 11.

11. Reconnect the EGR delta pressure sensor connector while the sensor is still removed from the venturi pipe.

12. Turn the ignition ON (key ON, engine OFF).

13. Monitor the EGR delta pressure voltage at Key ON, Engine OFF. Is the voltage between 0.55 and 0.83 volts?

a. Yes; clean the ports on the venturi pipe.

b. No; replace the Delta Pressure sensor. Refer to section " Installation of the Delta P Sensor ". Verify repair.

14. Compare the barometric pressure reading to the local barometric pressure for your area. Is the barometric pressure within 69 mbar (1 psi) of the barometric pressure for your area?

a. Yes; Go to step 15.

b. No; replace the MCM. Refer to section " Removal of the Motor Control Module ". Verify repair.

15. Compare the Intake Manifold Pressure sensor reading to the Barometric pressure sensor reading. Is the Intake Manifold

Pressure sensor reading within 103 mbar (1.5 psi) of the Barometric pressure reading?

a. Yes; Go to step 17.

b. No; Go to step 16.

16. Disconnect and inspect the Intake Manifold Pressure sensor electrical connector. Is there damage, corrosion or fretting present?

a. Yes; repair as necessary.

b. No; replace the Intake Manifold Pressure sensor. Refer to section " Removal of the Intake Pressure/Temperature

Sensor". Verify repair.

17. Compare the intake manifold temperature to the Charge Air Cooler outlet temperature. Is the intake manifold temperature within plus or minus 10°C (18°F) of the Charge Air Cooler outlet temperature?

a. Yes; Go to step 19.

b. No; Go to step 18.

18. Disconnect and inspect the Intake Manifold Temperature sensor electrical connector. Is there any damage, corrosion or fretting present?

a. Yes; repair as necessary. Verify repair.

b. No; replace the Intake Manifold Temperature sensor. Refer to section " Removal of the Intake Manifold Air

Temperature Sensor ". Verify repair.

19. Remove the EGR Delta Pressure sensor and inspect the ports. Is there a restriction or contamination present.

a. Yes; clean the Delta Pressure sensor and clean the ports in the venturi pipe. Refer to section " Cleaning of the

Exhaust Gas Recirculation Venturi Pipe Delta P Sensor Ports ". Verify repair.

b. No; Go to step 20.

20. Remove and inspect the EGR hot pipe. Refer to section "Removal of the Exhaust Gas Recirculation Hot Pipe". Are there any restrictions present in the EGR hot pipe?

a. Yes; clean the EGR system. Verify repair.

Refer to section "Cleaning of the DD13 Exhaust Gas Recirculation System".

Refer to section "Cleaning of the Turbo Compound DD15 and DD16 Exhaust Gas Recirculation Systems".

b. No; Go to step 21.

21. Move EGR pull rod back and forth while watching the EGR valve. Does the EGR flap move when the pull rod is moved back and forth?

a. Yes; Go to step 22.

b. No; replace the EGR valve. Verify repair.

Refer to section "Removal of the GHG17 DD15 AT Exhaust Gas Recirculation Valve/Hot Pipe".

Refer to section "Removal of the DD15 and DD16 Exhaust Gas Recirculation Valve"

Refer to section "Removal of the Exhaust Manifold" for the DD13 engine.

22. Remove and inspect the EGR crossover tube, mixer pipe and venturi pipe. Are there any restrictions present?

a. Yes; clean the EGR system. Verify repair.

12

All information subject to change without notice.

Copyright © 2015 DETROIT DIESEL CORPORATION 9 06-15

Refer to section "Cleaning of the DD13 Exhaust Gas Recirculation System".

Refer to section "Cleaning of the Turbo Compound DD15 and DD16 Exhaust Gas Recirculation Systems".

b. No; Go to step 23.

23. Inspect the EGR cooler. Are there any restrictions present in the EGR cooler?

a. Yes; clean the EGR system. Verify repair.

Refer to section "Cleaning of the DD13 Exhaust Gas Recirculation System".

Refer to section "Cleaning of the Turbo Compound DD15 and DD16 Exhaust Gas Recirculation Systems".

b. No; replace the Delta P sensor. Refer to section " Removal of the Delta P Sensor ". Verify repair.

9 06-15

All information subject to change without notice.

9 06-15 Copyright © 2015 DETROIT DIESEL CORPORATION

13

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