10 marzo, 2025 Allison 1000 & 2000 Gen 5 Fault Code:P1891 Throttle Position Sensor (TPS) PWM Signal – Low Input CIRCUIT DESCRIPTION:The TCM can be calibrated to receive throttle information from a PWM signal. DTC P1891 sets when the TCM...
10 marzo, 2025 Allison 1000 & 2000 Gen 5 Fault Code:P1892 Throttle Position Sensor (TPS) PWM Signal – High Input CIRCUIT DESCRIPTION:The TCM can be calibrated to receive throttle information from a Pulse Width Modulated (PWM) signal. DTC P1891 sets...
10 marzo, 2025 Allison 1000 & 2000 Gen 5 Fault Code:P2637 Torque Management Feedback Signal – SEM CIRCUIT DESCRIPTION:SEM allows the TCM to request torque reduction from the engine controller. By reducing torque, shifts can be made...
10 marzo, 2025 Allison 1000 & 2000 Gen 5 Fault Code:P2641 Torque Management Feedback Signal – LRTP CIRCUIT DESCRIPTION:LRTP protects the transmission during low vehicle speed conditions. When an engine torque rating exceeds a predetermined value, LRTP...
10 marzo, 2025 Allison 1000 & 2000 Gen 5 Fault Code:P2669 Actuator Supply Voltage 2 Open CIRCUIT DESCRIPTION:HSD2 supplies battery voltage to PCS2, SS1, SS2, SS3 via wire 171. HSD2 is continuously on during normal operation...
10 marzo, 2025 Allison 1000 & 2000 Gen 5 Fault Code:P2670 Actuator Supply Voltage 2 (HSD2) – Low CIRCUIT DESCRIPTION:HSD2 supplies battery voltage to PCS2, SS1, SS2, SS3 via wire 171. HSD2 is continuously on during normal operation...