DIAGNOSTIC RESPONSE:None CIRCUIT DESCRIPTION:The Oil Life Monitor (OM) is part of the OEM 4th Generation Control System Prognostics Package. OM calculates the remaining life of the transmission fluid (oil) based on the established life for the required baseline fluid and is continuously adjusted for cumulative effects of parameters such as operating time, retarder operation, output shaft revolutions, and shift frequency. When the remaining fluid life reaches approximately 1-2%, the SERVICE TRANS indicator (wrench icon in an OEM shift selector) illuminates, denoting a required change of transmission fluid. The indicator illuminates at each initialization of the TCM and remains illuminated for...

DIAGNOSTIC RESPONSE:None CIRCUIT DESCRIPTION:Pressure control Main Mod solenoid is normally closed solenoid used to modulate the transmission main pressure schedule. The Transmission Control Module (TCM) commands the solenoid ON when specific transmission and engine conditions are met. When the Main Mod solenoid is commanded ON, pressure is routed to the main regulator valve and lowers the main pressure schedule. The TCM sends control current to Main Mod solenoid from High Side Driver 1 (HSD1) via wire 111. HSD1 is continuously ON unless the TCM detects a fault condition. The TCM regulates the amount of current to the Main Mod solenoid...

DIAGNOSTIC RESPONSE:None CIRCUIT DESCRIPTION:Pressure control Main Mod solenoid is a normally closed solenoid used to modulate the transmission main pressure schedule. The Transmission Control Module (TCM) commands the solenoid ON when specific transmission and engine conditions are met. When the Main Mod solenoid is commanded ON, pressure is routed to the main regulator valve lowering the main pressure schedule. The TCM sends control current to the Main Mod solenoid from High Side Driver 1 (HSD1) via wire 111. HSD1 is continuously ON unless the TCM detects a fault condition. The TCM regulates the amount of current to the Main Mod...

DIAGNOSTIC RESPONSE:DNS, SOL OFF (hydraulic default) CIRCUIT DESCRIPTION:Pressure control Main Mod solenoid is a normally closed solenoid used to modulate the transmission main pressure schedule. The Transmission Control Module (TCM) commands the solenoid ON when specific transmission and engine conditions are met. When the Main Mod solenoid is commanded ON, pressure is routed to the main regulator valve and lowers the main pressure schedule. The TCM sends control current to the Main Mod solenoid from High Side Driver 1 (HSD1) via wire 111. HSD1 is continuously ON unless the TCM detects a fault condition. The TCM regulates the amount of...

DIAGNOSTIC RESPONSE:None CIRCUIT DESCRIPTION:Pressure Control Main Mod solenoid is a normally closed solenoid used to modulate the transmission main pressure schedule. The Transmission Control Module (TCM) commands the solenoid ON when specific transmission and engine conditions are met. When the Main Mod solenoid is commanded ON, pressure is routed to the main regulator valve and lowers the main pressure schedule. The TCM sends control current to the Main Mod solenoid from High Side Driver 1 (HSD1) via wire 111. HSD1 is continuously ON unless the TCM detects a fault condition. The TCM regulates the amount of current to the Main...