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 Control Module (TCM) commands the solenoid ON to produce hydraulic pressure in the clutch apply circuit. When PCS4 is commanded OFF, the clutch pressure is released. The TCM sends control current to PCS4 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 PCS4 by switching PCS4 low side driver ON and...

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 then compares the known gear ratio to the calculated gear ratio for the current range. This DTC test determines if the on-coming clutch controlled by Pressure Control Solenoid 1 (PCS1) engages during a forward range shift. PCS1 controls the C1 clutch for 1st through 4th gears in all 3000 and 4000 transmissions, and the Low range in 4700/4800 transmissions. PCS1 does not control clutches for Low range in the 3700...

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 then compares the known gear ratio to the calculated gear ratio for the current range. This DTC test determines if the off-going clutch controlled by Pressure Control Solenoid 1 (PCS1) remains engaged during a forward range shift. PCS1 controls the C1 clutch for 1st through 4th gears in all 3000 and 4000 transmissions, and the Low range in 4700/4800 transmissions. PCS1 does not control clutches for Low range in the...

DIAGNOSTIC RESPONSE:DNS, SOL OFF (hydraulic default) CIRCUIT DESCRIPTION:Pressure Control Solenoid 1 (PCS1) is a normally open solenoid used to apply the C1 clutch in 1st and 4th range. The Transmission Control Module (TCM) commands the solenoid OFF to produce hydraulic pressure in the clutch apply circuit. When PCS1 is commanded ON, the C1 clutch is released. The TCM sends control current to PCS1 from High Side Driver 2 (HSD2) via wire 171. HSD2 is continuously ON unless the TCM detects a fault condition. The TCM regulates the amount of current to PCS1 by switching PCS1 low side driver ON and...

DIAGNOSTIC RESPONSE:DNS, SOL OFF (hydraulic default) CIRCUIT DESCRIPTION:Pressure Control Solenoid 1 (PCS1) is a normally open solenoid used to apply the C1 clutch in 1st and 4th range. The Transmission Control Module (TCM) commands the solenoid OFF to produce hydraulic pressure in the clutch apply circuit. When PCS1 is commanded ON, the C1 clutch is released. The TCM sends control current to PCS1 from High Side Driver 2 (HSD2) via wire 171. HSD2 is continuously ON unless the TCM detects a fault condition. The TCM regulates the amount of current to PCS1 by switching PCS1 low side driver ON and...