1020-13 Service Bulletin/Repair Instructions

10 20-13
1
10 20-13
SUBJECT
DATE
SPN 1071/FMI 3,4,5 - EPA10 - GHG14 (MCM)
October 2013
Additions, Revisions, or Updates

Publication Number / Title
DDC-SVC-MAN-0084
Platform
DD Platform
Section Title
Change
SPN 1071/FMI 3,4 EPA10 - GHG14
Updated fan diagnostics steps 4 through 12.
SPN 1071/FMI 5 EPA10 - GHG14
Updated fan diagnostics steps 2 through 11.
All information subject to change without notice.
10 20-13
Copyright © 2013 DETROIT DIESEL CORPORATION
3
2 SPN 1071/FMI 3 - EPA10 - GHG14
2
SPN 1071/FMI 3 - EPA10 - GHG14
This diagnostic is typically a Fan Stage 2 Circuit Failed High

Table 1.

SPN 1071/FMI 3

Description
Fan Circuit Failed High
Monitored Parameter
Fan Control Solenoid
Typical Enabling Conditions
Always Enabled
Monitor Sequence
None
Execution Frequency
Always Enabled
Typical Duration
2 Seconds
Dash Lamps
None
Engine Reaction
None
Verification
Ignition cycle
4
All information subject to change without notice.
Copyright © 2013 DETROIT DIESEL CORPORATION 10 20-13
10 20-13
1. Turn the ignition OFF.

2. Disconnect the vehicle10-pin interface connector.

3. Inspect the vehicle10-pin interface connector for corroded, unseated (pushed out) or damaged pins, bent or spread pins;

inspect the connector seal for damage (signs of water or oil intrusion).

a. If water or oil intrusion, damage, bent or spread pins are found, repair as necessary. Verify repairs.

b. If the connector shows no signs of damage, Go to step 4.

4. Turn the ignition ON (key On, engine OFF).

5. Connect DDDL/DDRS 7.10 or newer. Clear fault codes. Does the fault code become active?

a. Yes; Go to step 10.

b. No; Go to step 6.

6. Reconnect the vehicle10-pin interface connector.

7. Disconnect the fan control solenoid connector.

8. Inspect the fan control solenoid connector for corroded, unseated (pushed out) or damaged pins, bent or spread pins;

inspect the connector seal for damage (signs of water or oil intrusion).

a. If water or oil intrusion, bent or spread pins are found, repair as necessary. Verify repairs.

b. If the connector shows no signs of damage, Go to step 9.

9. Cycle ignition. Clear fault codes. Does the fault code become active?

a. Yes; repair short to power on fan control circuit from the vehicle10-pin interface connector pin 3 to the fan

control solenoid. Refer to Original Equipment Manufacturer (OEM) for wiring information.

b. No; replace the fan control solenoid. Refer to Original Equipment Manufacturer (OEM) procedures.

10. Turn the ignition OFF.

11. Disconnect the 120–pin Motor Control Module (MCM) connector.

12. Inspect the 120–pin Motor Control Module (MCM) connector for corroded, unseated (pushed out) or damaged pins,

bent or spread pins; inspect the connector seal for damage (signs of water or oil intrusion).

a. If water or oil intrusion, damage, bent or spread pins are found, repair as necessary.

b. If the connector shows no signs of damage, repair short to power on fan control circuit from MCM pin 33 to the

vehicle10-pin interface connector pin 3.
All information subject to change without notice.
10 20-13
Copyright © 2013 DETROIT DIESEL CORPORATION
5
3 SPN 1071/FMI 4 - EPA10 - GHG14
3
SPN 1071/FMI 4 - EPA10 - GHG14
This diagnostic is typically Fan Stage 2 Circuit Failed Low

Table 2.

SPN 1071/FMI 4

Description
Fan Circuit Failed Low
Monitored Parameter
Fan Control Solenoid
Typical Enabling Conditions
Always Enabled
Monitor Sequence
None
Execution Frequency
Always Enabled
Typical Duration
2 Seconds
Dash Lamps
MIL, CEL
Engine Reaction
None
Verification
Ignition cycle
6
All information subject to change without notice.
Copyright © 2013 DETROIT DIESEL CORPORATION 10 20-13
10 20-13
1. Turn the ignition OFF.

2. Disconnect the vehicle10-pin interface connector.

3. Inspect the vehicle10-pin interface connector for corroded, unseated (pushed out) or damaged pins, bent or spread pins;

inspect the connector seal for damage (signs of water or oil intrusion).

a. If water or oil intrusion, damage, bent or spread pins are found, repair as necessary.

b. If the connector shows no signs of damage, Go to step 4.

4. Turn the ignition ON (key On, engine OFF).

5. Connect DDDL/DDRS 7.10 or newer. Clear fault codes. Does the fault code become active?

a. Yes; Go to step 10.

b. No; Go to step 6.

6. Reconnect the vehicle10-pin interface connector.

7. Disconnect the fan control solenoid connector.

8. Inspect the fan control solenoid connector for corroded, unseated (pushed out) or damaged pins, bent or spread pins;

inspect the connector seal for damage (signs of water or oil intrusion).

a. If water or oil intrusion, bent or spread pins are found, repair as necessary. Verify repairs.

b. If the connector shows no signs of damage, Go to step 9.

9. Cycle ignition. Clear fault codes. Does the fault code become active?

a. Yes; repair short to ground on fan control circuit from the vehicle10-pin interface connector pin 3 to the fan

control solenoid. Refer to Original Equipment Manufacturer (OEM) for wiring information.

b. No; replace the fan control solenoid. Refer to Original Equipment Manufacturer (OEM) procedures.

10. Turn the ignition OFF.

11. Disconnect the 120–pin Motor Control Module (MCM) connector.

12. Inspect the 120–pin Motor Control Module (MCM) connector for corroded, unseated (pushed out) or damaged pins,

bent or spread pins; inspect the connector seal for damage (signs of water or oil intrusion).

a. If water or oil intrusion, damage, bent or spread pins are found, repair as necessary. Verify repairs.

b. If the connector shows no signs of damage, repair short to ground on fan control circuit from MCM pin 33 to the

vehicle10-pin interface connector pin 3.
All information subject to change without notice.
10 20-13
Copyright © 2013 DETROIT DIESEL CORPORATION
7
4 SPN 1071/FMI 5 - EPA10 - GHG14
4
SPN 1071/FMI 5 - EPA10 - GHG14
This diagnostic is typically Fan Stage 2 Circuit Failed Open

Table 3.

SPN 1071/FMI 4

Description
Fan Circuit Failed Open
Monitored Parameter
Fan Control Solenoid
Typical Enabling Conditions
Always Enabled
Monitor Sequence
None
Execution Frequency
Always Enabled
Typical Duration
2 Seconds
Dash Lamps
None
Engine Reaction
None
Verification
Ignition cycle
8
All information subject to change without notice.
Copyright © 2013 DETROIT DIESEL CORPORATION 10 20-13
10 20-13
1. Check for multiple codes.

a. If SPN 647/FMI 5, SPN 1072/FMI 5 and SPN 1071/FMI 5 are active, repair the open in the wiring between the

pin 91 of the 120–pin Motor Control Module (MCM) connector and the fan and the Jake Brake® solenoids.

Verify repairs.

b. If only SPN 1071/FMI 5 is active, Go to step 2.

2. Turn the ignition OFF.

3. Disconnect the vehicle10-pin interface connector.

4. Inspect the vehicle10-pin interface connector for corroded, unseated (pushed out) or damaged pins, bent or spread pins;

inspect the connector seal for damage (signs of water or oil intrusion).

a. If water or oil intrusion, damage, bent or spread pins are found, repair as necessary.

b. If the connector shows no signs of damage, reconnect 10- pin connector, Go to step 5.

5. Disconnect the 120–pin Motor Control Module (MCM) connector.

6. Inspect the 120–pin Motor Control Module (MCM) connector for corroded, unseated (pushed out) or damaged pins,

bent or spread pins; inspect the connector seal for damage (signs of water or oil intrusion).

a. If water or oil intrusion, bent or spread pins are found, repair as necessary. Verify repairs.

b. If the connector shows no signs of damage, Go to step 7.

7. Measure the resistance between MCM harness connector pin 33 and the vehicle 10-pin interface connector pin 3.

a. If the resistance is less than five ohms, Go to step 8.

b. If the resistance is greater than five ohms, repair the open circuit on fan circuit pin 33 of the 120–pin MCM

connector to the vehicle 10-pin interface connector pin 3.

8. Measure the resistance between MCM harness connector pin 91 and the vehicle 10-pin interface connector pin 1.

a. If the resistance is less than five ohms, Go to step 9.

b. If the resistance is greater than five ohms, repair the open circuit on fan power circuit pin 91 of the 120–pin

MCM connector to the vehicle 10-pin interface connector pin 1.

9. Disconnect the fan control solenoid connector.

10. Inspect the fan control solenoid connector for corroded, unseated (pushed out) or damaged pins, bent or spread pins;

inspect the connector seal for damage (signs of water or oil intrusion).

a. If water or oil intrusion, bent or spread pins are found, repair as necessary. Verify repairs.

b. If the connector shows no signs of damage, Go to step 11.

11. Measure the resistance between the fan control solenoid pins.

All information subject to change without notice.
10 20-13
Copyright © 2013 DETROIT DIESEL CORPORATION
9
4 SPN 1071/FMI 5 - EPA10 - GHG14

a. If the resistance is less than 10KΩ, repair the open circuit(s) between the fan control solenoid connector and the

vehicle 10-pin interface connector pin 3 and/or pin 1. Refer to Original Equipment Manufacturer (OEM)

procedures.

b. If the resistance is greater than 10K Ω, replace the fan control solenoid. Refer to Original Equipment

Manufacturer (OEM) procedures.
10
All information subject to change without notice.
Copyright © 2013 DETROIT DIESEL CORPORATION 10 20-13

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