Allison

Allison 3000 & 4000 Gen 4 Fault Code: P2724 Pre...

DIAGNOSTIC RESPONSE:DNS, RPR CIRCUIT DESCRIPTION:The Transmission Control Module (TCM) uses input from the turbine speed and output speed sensors to determine the current commanded for steady-state gear ratio. The TCM...

Allison 3000 & 4000 Gen 4 Fault Code: P2723 Pre...

DIAGNOSTIC RESPONSE:DNS, RPR CIRCUIT DESCRIPTION:The Transmission Control Module (TCM) uses input from the turbine speed and output speed sensors to determine the current commanded for steady-state gear ratio. The TCM...

Allison 3000 & 4000 Gen 4 Fault Code: P2721 Pre...

DIAGNOSTIC RESPONSE:DNS, SOL OFF (hydraulic default) CIRCUIT DESCRIPTION:Pressure Control Solenoid 4 (PCS4) is a normally closed solenoid used to apply the C4 clutch in 2nd and 6th ranges. The Transmission...

Allison 3000 & 4000 Gen 4 Fault Code: P2720 Pre...

DIAGNOSTIC RESPONSE:DNS, SOL OFF (hydraulic default) CIRCUIT DESCRIPTION:Pressure Control Solenoid 4 (PCS4) is a normally closed solenoid used to apply the C4 clutch in 2nd and 6th ranges. The Transmission...

Allison 3000 & 4000 Gen 4 Fault Code: P2718 Pre...

DIAGNOSTIC RESPONSE:DNS, SOL OFF (hydraulic default) CIRCUIT DESCRIPTION:Pressure Control Solenoid 4 (PCS4) is a normally closed solenoid used to apply the C4 clutch in 2nd and 6th ranges. The Transmission...

Allison 3000 & 4000 Gen 4 Fault Code: P2715 Pre...

DIAGNOSTIC RESPONSE:DNS, SOL OFF (hydraulic default) CIRCUIT DESCRIPTION:The Transmission Control Module (TCM) uses input from the turbine speed and output speed sensors to determine the current commanded for steady-state gear...