3863444 CONTROL GP-UNPROGRAMMED Caterpillar parts
311F LRR, 323D2 L, 336E H, 336E LH, 374F L, 390F L
Rating:
Alternative (cross code) number:
CA3863444
386-3444
3863444
CA3863444
386-3444
3863444
Weight: 3 pounds 1 kg.
EXCAVATOR,
Related part:
3863444
CONT GP -B
20R7983
R
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US$2,173.58
28 May 2025
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ECU ECM 386-3444 3863444 Diesel Engine Control Module Computer Board with Program.Compatible for Caterpillar CAT E320D2
WWEIMNS
WWEIMNS
ECU Controller 3863444 386-3444 for Caterpillar CAT E311D E312D E320D2 330D2 Excavator
SLYQMC Model Name：386-3444 || Application:The functions of the diesel ECU 386-3444 computer board mainly include engine performance control, fuel efficiency management, emission control, fault diagnosis, safety functions, and driving mode adjustment. || Service: We provide technical support; if you receive the product use problems, you can contact customer service to solve, we will reply you within 24 hours, thank you!
SLYQMC Model Name：386-3444 || Application:The functions of the diesel ECU 386-3444 computer board mainly include engine performance control, fuel efficiency management, emission control, fault diagnosis, safety functions, and driving mode adjustment. || Service: We provide technical support; if you receive the product use problems, you can contact customer service to solve, we will reply you within 24 hours, thank you!
Compatible for CAT 386-3444 ECU ECM Original Diesel Engine Control Module Computer Board Suitable E320D2
QKGHMKL This component requires programming and/or special setup programs. || Manufacturing suitability, form, and function in accordance with automotive OE specifications. || Stable performance, high reliability, manufactured according to strict quality control standards. || Displaying the operation of important vehicle systems is crucial for your vehicle's performance. || Manufactured according to the original specifications of the car, adapted, in form and function.
QKGHMKL This component requires programming and/or special setup programs. || Manufacturing suitability, form, and function in accordance with automotive OE specifications. || Stable performance, high reliability, manufactured according to strict quality control standards. || Displaying the operation of important vehicle systems is crucial for your vehicle's performance. || Manufactured according to the original specifications of the car, adapted, in form and function.
Number on catalog scheme:
2
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3863444
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Compatible equipment models: 3863444:
Information:
Table 1
J1939 Code and Description CDL Code and Description Comments
4367-3
Aftertreatment #1 DEF Quick Thaw Tank Level : Voltage Above Normal 3131-3
Aftertreatment #1 DEF Tank #2 Level Sensor : Voltage Above Normal The Electronic Control Module (ECM) detects signal voltage that is not in the acceptable range.
The code is logged.
4367-4
Aftertreatment #1 DEF Quick Thaw Tank Level : Voltage Below Normal 3131-4
Aftertreatment #1 DEF Tank #2 Level Sensor : Voltage Below Normal The ECM detects signal voltage that is not in the acceptable range.
The code is logged.
4368-3
Aftertreatment #1 DEF Tank #2 Temperature : Voltage Above Normal 3135-3
Aftertreatment #1 DEF Tank #2 Temperature Sensor : Voltage Above Normal The ECM detects signal voltage that is not in the acceptable range.
The code is logged.
4368-4
Aftertreatment #1 DEF Tank #2 Temperature : Voltage Below Normal 3135-4
Aftertreatment #1 DEF Tank #2 Temperature Sensor : Voltage Below Normal The ECM detects signal voltage that is not in the acceptable range.
The code is logged. The signal for the Diesel Exhaust Fluid (DEF) tank level sensor is routed to terminal 1 of the tank header unit. The signal for the DEF tank temperature sensor is routed to terminal 3 of the tank header unit. The sensor return is shared and is routed to terminal 2 of the tank header unit. The Electronic Control Module (ECM) provides short circuit protection for the internal power supply. A short circuit to the battery will not damage the internal power supply.
Illustration 1 g01240891
(1) DEF level sensor signal
(2) Sensor return
(3) DEF tank temperature signal
Illustration 2 g06136353
Table 2
Troubleshooting Test Steps Values Results
1. Check for Codes
A. Turn the DC breaker, located in the power distribution box, to the ON position.
B. Connect Cat® Electronic Technician (ET) to the service tool connector.
C. Determine if a code is active or logged.
Codes
Result: A -3 code is active.
Proceed to Test Step 2.
Result: A -4 code is active.
Proceed to Test Step 3.
2. Create a Short at the Sensor Connector
A. Verify that the wiring harness connector is free of debris, free of corrosion, and securely connected.
B. Install a jumper wire between the appropriate signal and return wire at the sensor connector to create a short.
C. Turn the DC breaker, located in the power distribution box, to the ON position.
D. Connect Cat ET.
E. Use Cat ET to monitor the following codes:
- -4 code
F. Turn the DC breaker, located in the power distribution box, to the OFF position.
Create a Short
Result: A -4 code becomes active.
Repair:
Cat SIS web machinery list:
Parts control Caterpillar catalog:
12M 3, 12M 3 AWD, 140M 3, 140M 3 AWD, 160M 3, 160M 3 AWD, 312E, 312E L, 314E CR, 314E LCR, 316E L, 318E L, 374F L, 390F L, 416F, 420F, 428F, 430F, 432F, 434F, 444F, 450F, 725C, 730C, 824K, 825K, 826K,...
3722910
CONTROL GP-UNPROGRAMMED
12M 2, 12M 3, 140M 2, 160M 2, 3516C, 390F L, 627H, 627K, 725C, 770G, 770G OEM, 772G, 772G OEM, 824K, 825K, 826K, 834K, 836K, 988K, C175-16, C9, D6T LGP, D6T XL, D7E, D7E LGP, D9T, TH31-E61
12M 2, 12M 3, 140M 2, 160M 2, 3516C, 390F L, 627H, 627K, 725C, 770G, 770G OEM, 772G, 772G OEM, 824K, 825K, 826K, 834K, 836K, 988K, C175-16, C9, D6T LGP, D6T XL, D7E, D7E LGP, D9T, TH31-E61
2864C, 336E, 336E H, 336E HVG, 336E L, 336E LH, 336E LN, 568 FM LL, 586C, 966K, 972K, C15, C18, C9.3, CX31-C13I, CX35-C18I
4246234
CONTROL GP-UNPROGRAMMED
12M 3, 12M 3 AWD, 140M 3, 140M 3 AWD, 160M 3, 160M 3 AWD, 336F L, 349F L, 374F L, 390F L, 525D, 535D, 545D, 555D, 621K, 623K, 627K, 725C, 730C, 770G, 770G OEM, 772G, 772G OEM, 824K, 825K, 826K, 834K, ...
12M 3, 12M 3 AWD, 140M 3, 140M 3 AWD, 160M 3, 160M 3 AWD, 336F L, 349F L, 374F L, 390F L, 525D, 535D, 545D, 555D, 621K, 623K, 627K, 725C, 730C, 770G, 770G OEM, 772G, 772G OEM, 824K, 825K, 826K, 834K, ...
2457832
CONTROL AS
307D, 311D LRR, 311F LRR, 312D, 312D L, 312D2, 312D2 GC, 312D2 L, 313D, 313D2, 313D2 LGP, 315D L, 318D L, 318D2 L, 319D, 319D L, 319D LN, 320D, 320D FM, 320D FM RR, 320D GC, 320D L, 320D LN, 320D LRR,...
307D, 311D LRR, 311F LRR, 312D, 312D L, 312D2, 312D2 GC, 312D2 L, 313D, 313D2, 313D2 LGP, 315D L, 318D L, 318D2 L, 319D, 319D L, 319D LN, 320D, 320D FM, 320D FM RR, 320D GC, 320D L, 320D LN, 320D LRR,...
3564944
CONTROL AS-FAN
308D, 312E, 312E L, 314D CR, 314D LCR, 316E L, 318E L, 320E, 320E L, 320E LN, 320E LRR, 320E RR, 321D LCR, 323E L, 324E, 324E L, 324E LN, 328D LCR, 329E, 329E L, 329E LN, 336E, 336E H, 336E HVG, 336E ...
308D, 312E, 312E L, 314D CR, 314D LCR, 316E L, 318E L, 320E, 320E L, 320E LN, 320E LRR, 320E RR, 321D LCR, 323E L, 324E, 324E L, 324E LN, 328D LCR, 329E, 329E L, 329E LN, 336E, 336E H, 336E HVG, 336E ...
312E, 312E L, 314E CR, 314E LCR, 316E L, 318E L, 320E, 320E L, 320E LN, 320E LRR, 320E RR, 323E L, 324E, 324E L, 324E LN, 329E, 329E L, 329E LN, 336E, 336E H, 336E HVG, 336E L, 336E LH, 336E LN, 336F ...
3863437
CONTROL GP-COMMUNICATION
305E, 320E, 374D L, 374F L, 390D, 390F L
305E, 320E, 374D L, 374F L, 390D, 390F L
4445469
CONTROL GP-MONITOR
311F LRR
311F LRR
311F LRR, 323D2 L, 725C, 730C, 735B, 740B, 770G, 770G OEM, 772G, 772G OEM, 773G, 773G LRC, 773G OEM, 775G, 775G LRC, 775G OEM, 777G, 793F, 793F AC, 793F CMD, 793F OEM, 793F-XQ, 795F AC, 795F XQ, 797F,...
3406643
CONTROL GP-WASHER & WIPER
324D L, 324E, 324E LN, 329D L, 329D LN, 329E, 329E L, 329E LN, 330D, 336D L, 336D LN, 336E, 336E H, 336E HVG, 336E LH, 336E LN, 345D, 345D L, 345D L VG, 349E, 349E L HVG, 349E L VG, 374F L, 390F L
324D L, 324E, 324E LN, 329D L, 329D LN, 329E, 329E L, 329E LN, 330D, 336D L, 336D LN, 336E, 336E H, 336E HVG, 336E LH, 336E LN, 345D, 345D L, 345D L VG, 349E, 349E L HVG, 349E L VG, 374F L, 390F L
336E H, 336E LH, 374F L, 390F L
3863437
CONTROL GP-COMMUNICATION
305E, 320E, 374D L, 374F L, 390D, 390F L
305E, 320E, 374D L, 374F L, 390D, 390F L
4540437
CONTROL GP-COMMUNICATION
303.5E, 303E CR, 308E CR, 901C, 902C, 903C, D3K2 LGP, D4K2 XL, D5K2 XL
303.5E, 303E CR, 308E CR, 901C, 902C, 903C, D3K2 LGP, D4K2 XL, D5K2 XL
3890762
CONTROL AS
308E
308E
4528322
CONTROL GP-BLADE
302.4D
302.4D
4335599
CONTROL GP-MONITOR
303E CR
303E CR
4222938
CONTROL AS
303E CR
303E CR
311F LRR, 323D2 L, 725C, 730C, 735B, 740B, 770G, 770G OEM, 772G, 772G OEM, 773G, 773G LRC, 773G OEM, 775G, 775G LRC, 775G OEM, 777G, 793F, 793F AC, 793F CMD, 793F OEM, 793F-XQ, 795F AC, 795F XQ, 797F,...
4445469
CONTROL GP-MONITOR
311F LRR
311F LRR