Cummins ISM CM870 (2003-06) Fault Code: 343 PID: S254 SPN: 629 FMI: 12/12 Electronic Control Module Warning Internal Hardware Failure – Bad Intelligent Device or Component. ECM power supply errors have been detected.

This fault can also be caused by resistance in the ECM battery supply (+) or (-) circuits. Resistance in these circuits can cause the voltage level at the ECM input to drop low enough to set Fault Code 343 active.

Possible repair:

1)Replace the ECM.

Categories Cumminz, DTC TRUCKS, ISM CM870 (2003-06) Tags -, 12/12, 2003-06, 343, 629, Bad, been, CM870, Code, Component., Control, Cummins, detected., Device, ECM, Electronic, errors, Failure, Fault, FMI, Hardware, have, Intelligent, Internal, ISM, Module, or, PID, power, S254, SPN, Supply, Warning

Volvo PROSIS Offline 2019 Parts Catalog Installation Service
Trucks software $45.00
Rated 0 out of 5
CAT ET 2024 Diagnostic Software for Heavy
CAT $100.00
Rated 0 out of 5
Isuzu G IDSS 2020 Diagnostic Service System [08.2020] Release Full
ISUZU $125.00
Rated 0 out of 5
Meritor WABCO Toolbox 12.12 Software
Trucks software $40.00
Rated 0 out of 5
ddct Detroit diesel calibration tool (DDCT) v4.5 English Include Calibrations & Metafiles
Detroit $30.00
Rated 0 out of 5

Volvo Impact 2021 Trucks & Buses 06.2021 DVD 9116 Spare Parts Catalog
Trucks software $55.00
Rated 0 out of 5
Diamond Logic Builder DLB 2018
Navistar $40.00
Rated 0 out of 5
Bobcat Service Library [03.2019] Service, Operator, Maintenance, Bulletines, etc full update
Bobcat $110.00
Rated 0 out of 5
Navkal 2018 offline version remove DPF MAXXFORCE 13 EPA 10
Navistar $80.00
Rated 0 out of 5
CATERPILLAR FLASH FILE 2021 74 GB ( Collection 2021 ) sofware trucks
CAT $55.00
Rated 0 out of 5
Isuzu G IDSS 2020 Diagnostic Service System [08.2020] Release Full
ISUZU $125.00
Rated 0 out of 5
2021 VOLVO PREMIUM TECH TOOL PTT V2.8.21 VCADS+DEVELOPER TOOL+APCI 2021/09 ( 1 PC )
Trucks software $85.00
Rated 0 out of 5
Cumminmms Insiter 8.9 Diagnostic Software
cummisznn $95.00
Rated 0 out of 5
CUMMINnSsg INSITEr 8.7.0.86 PRO + ZAP-IT
cummisznn $70.00
Rated 0 out of 5
PF Diagnose 2.0.2.23 Diagnostics Software 2013 – Full Heavy & Medium Duty with OBDII Support – Online Installation Service
PF Diagnose $60.00
Rated 0 out of 5
Navistar Diamond Logic Builder 2023 (DLB)
Navistar $94.00
Rated 0 out of 5
ZF Testman Pro ESB 10.5 2022
Trucks software $200.00
Rated 0 out of 5
Cumming Caltem 5.9.1 2022 ( 1 PC )
cummisznn $78.00
Rated 0 out of 5
Detroit Diagnostic Link (DDDL 8.09) Engineering level 10
Detroit $40.00
Rated 0 out of 5
DPF EGR SCR BAC ERG Delete & Flash CAAT Cummings Detroit Dodge Mack Volvo Collection of DELETE files
CAT $200.00
Rated 0 out of 5

SERVICE MANUAL BOBCAT 320-322
BOBCAT $65.00
Rated 0 out of 5
SERVICE MANUAL Fuso FE & FG Series 1996-2001
FUSO $27.00
Rated 0 out of 5
SERVICE MANUAL BOBCAT 843 sms
BOBCAT $45.00
Rated 0 out of 5
SERVICE MANUAL DETROIT SERIE 53
DETROIT $65.00
Rated 0 out of 5
SERVICE MANUAL DAF Workshop Manual DD DF DT Series
DAF $20.00
Rated 0 out of 5
SERVICE MANUAL Mack MP8-Euro 4
MACK $28.00
Rated 0 out of 5
SERVICE MANUAL BOBCAT 5610 SMS
BOBCAT $49.00
Rated 0 out of 5
SERVICE MANUAL BOBCAT 337 – 341 sms
BOBCAT $60.00
Rated 0 out of 5
SERVICE MANUAL BOBCAT 2400 sms
BOBCAT $48.00
Rated 0 out of 5
SERVICE MANUAL BOBCAT 450 453 sms
BOBCAT $50.00
Rated 0 out of 5