NHTSA ID Number: 10199584
Manufacturer Communication Number: 0106-16
TSB/Document Date: 2021-08-02
Summary
Diesel Exhaust Fluid Pressure Sensor Circuit Failed Low.
01 06-16
1
01 06-16
SUBJECT
DATE
SPN 4334/FMI 4 (ACM) (GHG14)
SPN 4334/FMI 4 (ACM) (GHG17)
January 2016
Additions, Revisions, or Updates
Publication Number / Title
DDC-SVC-MAN-0084
DDC-SVC-MAN-0191
Platform
Section Title
Change
DD Platform
GHG14
SPN 4334/FMI 4 GHG14
Updated section. Five steps were deleted.
DD Platform
GHG17
SPN 4334/FMI 4 GHG17
Same changes as the GHG14 but new title.
All information subject to change without notice.
01 06-16
Copyright © 2016 DETROIT DIESEL CORPORATION
3
2 SPN 4334/FMI 4 - GHG14
2
SPN 4334/FMI 4 - GHG14
Diesel Exhaust Fluid Pressure Sensor Circuit Failed Low
Table 1.
SPN 4334/FMI 4
Description
Diesel Exhaust Fluid (DEF) Pressure Sensor Circuit Voltage Below
Normal, or Shorted to Low Source
Monitored Parameter
Diesel Exhaust Fluid (DEF) Pressure Sensor
Typical Enabling Conditions
Always Enabled
Monitor Sequence
None
Execution Frequency
Always Enabled
Typical Duration
2 Seconds
Dash Lamps
MIL, CEL
Engine Reaction
Derate 25%
Verification
Engine Idle (1 minute)
Table 2.
8-Pin
Circuit
ACM-Pin
1
Metering Valve Low Side
28
2
Metering Valve High Side
33
3
Heating Low Side
22
4
Heating Supply
3
5
Sensor Supply 5V
84
6
Not Used
Not Used
7
Sensor Ground
99
8
DEF Pressure Signal
100
4
Connector
All information subject to change without notice.
Copyright © 2016 DETROIT DIESEL CORPORATION 01 06-16
01 06-16
Check as follows:
1. Check for multiple codes.
a. If SPN 4334/FMI 4, and SPN 3510/FMI 4 are present, repair short to ground between pin 5 of the DEF dosing
unit and pin 84 of the Aftertreatment Control Module (ACM).
b. If only SPN 4334/FMI 4 is present, Go to step 2.
2. Turn the ignition OFF.
3. Disconnect the DEF dosing unit harness connector.
4. Inspect the DEF dosing unit connector and the DEF dosing unit harness side connector for signs of damage, bent,
spread, broken, pushed out (unseated) or corroded pins or wire damage near the connector. Is any damage found?
a. Yes; repair as needed. Verify repairs.
b. No; Go to step 5.
5. Disconnect the ACM 120-pin connector.
6. Inspect the ACM 120-pin connector and 120-pin harness connector for signs of damage, bent, spread, broken, pushed
out (unseated) or corroded pins or wire damage near the connector. Is any damage found?
a. Yes; repair as needed. Verify repairs.
b. No; Go to step 7.
7. Measure the resistance between pin 7 and pin 8 on the DEF dosing unit connector, harness side. Is the resistance greater
than 10K ohms?
a. Yes; Go to step 8.
b. No; repair the short in the wire harness between pin 7 and pin 8 of the DEF dosing unit. Check intermediate
connections in chassis wiring; refer to OEM wiring diagrams for exact routing. Verify repairs.
8. Measure the resistance between pin 8 on the DEF dosing unit connector, harness side and chassis ground. Is the
resistance greater than 10K ohms?
a. Yes; Go to step 9.
b. No; repair the short in the wire harness between pin 8 of the DEF dosing unit and ground. Check intermediate
connections in chassis wiring; refer to OEM wiring diagrams for exact routing. Verify repairs.
9. Measure the resistance between pin 8 of the DEF dosing unit connector, harness side, and pin 100 of the ACM 120-pin
connector, harness side. Is the resistance less than five ohms?
All information subject to change without notice.
01 06-16
Copyright © 2016 DETROIT DIESEL CORPORATION
5
2 SPN 4334/FMI 4 - GHG14
a. Yes; Go to step 10.
b. No; repair the open wire between pin 8 of the DEF dosing unit connector and pin 100 of the ACM 120-pin
connector. Check intermediate connections in chassis wiring; refer to OEM wiring diagrams for exact routing.
Verify repairs.
10. Measure the resistance between pin 5 of the DEF dosing unit connector, harness side and pin 84 of the ACM 120-pin
connector, harness side. Is the resistance less than five ohms?
a. Yes; Go to step 11.
b. No; repair the open wire between pin 5 of the DEF dosing unit connector and pin 84 of the ACM 120-pin
connector. Check intermediate connections in chassis wiring; refer to OEM wiring diagrams for exact routing.
Verify repairs.
11. Turn the ignition ON (key ON, engine OFF).
WARNING: ENGINE EXHAUST
To avoid injury from inhaling engine exhaust, always operate the engine in a well-ventilated area.
Engine exhaust is toxic.
12. Measure the voltage between pin 84 of the ACM 120-pin connector, component side, and ground. Is the voltage
between 4.5 and 5.5 volts?
a. Yes; replace the DEF dosing unit. Refer to section "Removal of the GHG14 Dosing System Doser". Verify
repairs.
b. No; replace ACM. Refer to section "Removal of the Aftertreatment Control Module". Verify repairs.
6
All information subject to change without notice.
Copyright © 2016 DETROIT DIESEL CORPORATION 01 06-16
01 06-16
3
SPN 4334/FMI 4 - GHG17
Diesel Exhaust Fluid Pressure Sensor Circuit Failed Low
Table 3.
SPN 4334/FMI 4
Description
Diesel Exhaust Fluid (DEF) Pressure Sensor Circuit Voltage Below
Normal, or Shorted to Low Source
Monitored Parameter
Diesel Exhaust Fluid (DEF) Pressure Sensor
Typical Enabling Conditions
Always Enabled
Monitor Sequence
None
Execution Frequency
Always Enabled
Typical Duration
2 Seconds
Dash Lamps
MIL, CEL
Engine Reaction
Derate 25%
Verification
Engine Idle (1 minute)
Table 4.
8-Pin
Circuit
ACM-Pin
1
Metering Valve Low Side
28
2
Metering Valve High Side
33
3
Heating Low Side
22
4
Heating Supply
3
5
Sensor Supply 5V
84
6
Not Used
Not Used
7
Sensor Ground
99
8
DEF Pressure Signal
100
All information subject to change without notice.
01 06-16
Copyright © 2016 DETROIT DIESEL CORPORATION
Connector
7
3 SPN 4334/FMI 4 - GHG17
Check as follows:
1. Check for multiple codes.
a. If SPN 4334/FMI 4, and SPN 3510/FMI 4 are present, repair short to ground between pin 5 of the DEF dosing
unit and pin 84 of the Aftertreatment Control Module (ACM).
b. If only SPN 4334/FMI 4 is present, Go to step 2.
2. Turn the ignition OFF.
3. Disconnect the DEF dosing unit harness connector.
4. Inspect the DEF dosing unit connector and the DEF dosing unit harness side connector for signs of damage, bent,
spread, broken, pushed out (unseated) or corroded pins or wire damage near the connector. Is any damage found?
a. Yes; repair as needed. Verify repairs.
b. No; Go to step 5.
5. Disconnect the ACM 120-pin connector.
6. Inspect the ACM 120-pin connector and 120-pin harness connector for signs of damage, bent, spread, broken, pushed
out (unseated) or corroded pins or wire damage near the connector. Is any damage found?
a. Yes; repair as needed. Verify repairs.
b. No; Go to step 7.
7. Measure the resistance between pin 7 and pin 8 on the DEF dosing unit connector, harness side. Is the resistance greater
than 10K ohms?
a. Yes; Go to step 8.
b. No; repair the short in the wire harness between pin 7 and pin 8 of the DEF dosing unit. Check intermediate
connections in chassis wiring; refer to OEM wiring diagrams for exact routing. Verify repairs.
8. Measure the resistance between pin 8 on the DEF dosing unit connector, harness side, and chassis ground. Is the
resistance greater than 10K ohms?
a. Yes; Go to step 9.
b. No; repair the short in the wire harness between pin 8 of the DEF dosing unit and ground. Check intermediate
connections in chassis wiring; refer to OEM wiring diagrams for exact routing. Verify repairs.
9. Measure the resistance between pin 8 of the DEF dosing unit connector, harness side, and pin 100 of the ACM 120-pin
connector, harness side. Is the resistance less than five ohms?
8
All information subject to change without notice.
Copyright © 2016 DETROIT DIESEL CORPORATION 01 06-16
01 06-16
a. Yes; Go to step 10.
b. No; repair the open wire between pin 8 of the DEF dosing unit connector and pin 100 of the ACM 120-pin
connector. Check intermediate connections in chassis wiring; refer to OEM wiring diagrams for exact routing.
Verify repairs.
10. Measure the resistance between pin 5 of the DEF dosing unit connector, harness side, and pin 84 of the ACM 120-pin
connector, harness side. Is the resistance less than five ohms?
a. Yes; Go to step 11.
b. No; repair the open wire between pin 5 of the DEF dosing unit connector and pin 84 of the ACM 120-pin
connector. Check intermediate connections in chassis wiring; refer to OEM wiring diagrams for exact routing.
Verify repairs.
11. Turn the ignition ON (key ON, engine OFF).
WARNING: ENGINE EXHAUST
To avoid injury from inhaling engine exhaust, always operate the engine in a well-ventilated area.
Engine exhaust is toxic.
12. Measure the voltage between pin 84 of the ACM 120-pin connector, component side, and ground. Is the voltage
between 4.5 and 5.5 volts?
a. Yes; replace the DEF dosing unit. Refer to section "Removal of the Diesel Exhaust Fluid Dosing Unit". Verify
repairs.
b. No; replace ACM. Refer to section "Removal of the 1-BOX™ Aftertreatment Control Module". Verify repairs.
All information subject to change without notice.
01 06-16
Copyright © 2016 DETROIT DIESEL CORPORATION
9
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TSB/Document ID: 0106-16
Replacement Service Bulletin Number:
MFR Communication Date: 2016-01-06
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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