CIRCUIT DESCRIPTION:The Pressure Switch Manifold (PSM) is a multiple-switch assembly made up of three Normally Open (N/O) and one Normally Closed (N/C) pressure switches. PS2 monitors SV2 positioning and relays it to the TCM. DTC P0848 sets during steady state (all shift valves are commanded to their proper state and a valid range is attained) operation when SV2 is in the stroked state (commanded ON) and PS2 status is detected as destroked (Exhausted/OFF). The intent of this DTC is to detect an open condition in the pressure switch wiring circuit or the pressure switch. This diagnostic test is designed to...

CIRCUIT DESCRIPTION:The Pressure Switch Manifold (PSM) is a multiple-switch assembly made up of three Normally Open (N/O) and one Normally Closed (N/C) pressure switches. PS3 monitors SV3 positioning and relays it to the TCM. DTC P0872 sets during steady state (all shift valves are commanded to their proper state and a valid range is attained) operation when SV3 is in the destroked state (commanded OFF) and PS3 status is detected as destroked (Pressurized/ON). The intent of this DTC is to detect shorts-to-ground in the pressure switch wiring circuit or the pressure switch. This diagnostic test is designed to compare the...

CIRCUIT DESCRIPTION:The Pressure Switch Manifold (PSM) is a multiple-switch assembly made up of three Normally Open (N/O) and one Normally Closed (N/C) pressure switches. PS3 monitors SV3 positioning and relays it to the TCM. DTC P0873 sets during steady state (all shift valves are commanded to their proper state and a valid range is attained) operation when SV3 is in the stroked state (commanded ON) and PS3 status is detected as destroked (Exhausted/OFF). The intent of this DTC is to detect an open condition in the pressure switch wiring circuit or the pressure switch. This diagnostic test is designed to...

CIRCUIT DESCRIPTION:The Pressure Switch Manifold (PSM) is a multiple-switch assembly made up of three Normally Open (N/O) and one Normally Closed (N/C) pressure switches. Fluid pressure is supplied to PS4, holding it open when the manual selector valve is in any position except reverse. When the manual selector valve is moved to reverse, pressure to the PS4 is cut off, allowing the switch to close. DTC P0877 sets when P (Park), N (Neutral), or a forward range is selected and the PS4 state remains in the Exhausted/ON position for a period of time that is calibration dependent. ACTIONS TAKEN WHEN...

CIRCUIT DESCRIPTION:The Pressure Switch Manifold (PSM) is a multiple-switch assembly made up of three Normally Open (N/O) and one Normally Closed (N/C) pressure switches. Fluid pressure is supplied to the reverse pressure switch, holding it open when the manual selector valve is in any position except reverse. When the manual selector valve is moved to reverse, pressure to the reverse pressure switch is cut off, allowing the switch to close. DTC P0878 sets when:1. IMS PRNDL and PS4 do not agree. When R (Reverse) range is selected and the PS4 is detected in the Pressurized/OFF state for more than a...