Allison

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16 March, 2025

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Allison 3000 & 4000 Gen 4 Fault Code: U0100 Lost Communication With ECM/PCM (SAE J1708/J1587)

DIAGNOSTIC RESPONSE:Use default values. CIRCUIT DESCRIPTION:SAE J1708 defines the hardware and general structure of this interface, while SAE J1587 defines...

16 March, 2025

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Allison 3000 & 4000 Gen 4 Fault Code: U0103 Lost Communication With Gear Shift Module 1 (Shift Selector)

DIAGNOSTIC RESPONSE:Maintain range selected, observe gear shift direction circuit CIRCUIT DESCRIPTION:The OEM 4th Generation Controls shift selectors communicate with the...

16 March, 2025

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Allison 3000 & 4000 Gen 4 Fault Code: U0115 Lost Communication With ECM/PCM (CAN 1)

DIAGNOSTIC RESPONSE:Use default values CIRCUIT DESCRIPTION:In OEM 4th Generation Controls, the preferred digital datalink is the SAE J1939 Controller Area...

16 March, 2025

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Allison 3000 & 4000 Gen 4 Fault Code: U0291 Lost Communication With Gear Shift Module 2 (Shift Selector)

DIAGNOSTIC RESPONSE:Maintain range selected, observe gear shift direction circuit CIRCUIT DESCRIPTION:The OEM 4th Generation Controls shift selectors communicate with the...

16 March, 2025

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Allison 3000 & 4000 Gen 4 Fault Code: U0304 Incompatible Gear Shift Module 1 (Shift Selector) ID

DIAGNOSTIC RESPONSE:Ignore shift selector inputs CIRCUIT DESCRIPTION:The OEM 4th Generation Control shift selectors communicate with the Transmission Control Module (TCM)...

16 March, 2025

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Allison 3000 & 4000 Gen 4 Fault Code: U0333 Incompatible Gear Shift Module 2 (Shift Selector) ID

DIAGNOSTIC RESPONSE:Ignore shift selector inputs CIRCUIT DESCRIPTION:The OEM 4th Generation Control shift selectors communicate with the Transmission Control Module (TCM)...

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