Allison

Allison 1000 & 2000 Gen 4 Fault Codes: P0218 Tr...

Allison 1000 & 2000 Gen 4 Fault Codes: P0218 Transmission Fluid Over Temperature Condition CIRCUIT DESCRIPTION:The flow of transmission fluid starts in the transmission pan. Fluid is then drawn through...

Allison 1000 & 2000 Gen 4 Fault Codes: P0123 Pe...

Allison 1000 & 2000 Gen 4 Fault Codes: P0123 Pedal Position Sensor Circuit High Voltage CIRCUIT DESCRIPTION:The Transmission Control Module (TCM) receives input on throttle position from either a Throttle...

Allison 1000 & 2000 Gen 4 Fault Codes: P0122 Pe...

Allison 1000 & 2000 Gen 4 Fault Codes: P0122 Pedal Position Sensor Circuit Low Voltage CIRCUIT DESCRIPTION:The Transmission Control Module (TCM) receives input on throttle position from either a Throttle...

Allison 1000 & 2000 Gen 4 Fault Codes: P1688 Un...

Allison 1000 & 2000 Gen 4 Fault Codes: P1688 Unmanaged Engine Torque Delivered To TCM Signal CIRCUIT DESCRIPTION:The GM 8.1 liter gasoline engine is used in some medium duty applications....