Allison

Allison 1000 & 2000 Gen 5 Fault Code:P0711 Tran...

CIRCUIT DESCRIPTION:The Transmission Fluid Temperature (TFT) sensor is incorporated into the Pressure Switch Manifold (PSM), which is located in the transmission oil pan. The TFT sensor is a thermistor that...

Allison 1000 & 2000 Gen 5 Fault Code:P0708 Tran...

CIRCUIT DESCRIPTION:An Internal Mode Switch (IMS) is used by the TCM to detect the angular position of the shift selector shaft. There are five internal switches in the IMS: A,...

Allison 1000 & 2000 Gen 5 Fault Code:P0703 Brak...

CIRCUIT DESCRIPTION:Service brake status is relayed to the TCM by a mechanical switch, or over the J1939 datalink indicating the service brake has been applied. Input wire 162 is used...

Allison 1000 & 2000 Gen 5 Fault Code:P0701 Tran...

CIRCUIT DESCRIPTION:The TCM monitors the status of the pressure switches at start-up to detect the presence of hydraulic pressure. ACTION TAKEN WHEN THE DTC SETS:1. The CHECK TRANS light is...

Allison 1000 & 2000 Gen 5 Fault Code:P0659 Actu...

CIRCUIT DESCRIPTION:High Side Driver 1 (HSD1) supplies battery voltage to the Main Modulation, Torque Converter Clutch (TCC) and Pressure Control Solenoid 1 (PCS1) solenoids via wire 111. HSD1 is continuously...

Allison 1000 & 2000 Gen 5 Fault Code:P0658 Actu...

CIRCUIT DESCRIPTION:High Side Driver 1 (HSD1) supplies battery voltage to the Main Modulation, Torque Converter Clutch (TCC) and Pressure Control Solenoid 1 (PCS1) solenoids via wire 111. HSD1 is continuously...