CIRCUIT DESCRIPTION:The TCM uses input from the turbine speed and the output speed sensors to determine gear ratios. The TCM then compares the known gear ratio to the calculated gear ratio for the current range. DTC P0736 sets when the calculated reverse range ratio (steady state) differs from the known reverse range ratio. ACTION TAKEN WHEN THE DTC SETS:1. When DTC P0736 is active, the transmission locks in N (Neutral).2. DTC P0736 is stored in the TCM history.3. The CHECK TRANS light illuminates (non-OBD II strategy).4. The TCM forces Variable Modulated Main off.5. TCM freezes shift adapts (DNA).6. TCM inhibits...

CIRCUIT DESCRIPTION:The transmission TCC solenoid is a pressure control solenoid used to control the rate of TCC apply and release. The TCM applies and releases the TCC by varying the amount of electrical current through a low side driver. The TCM uses data received from the engine speed sensor and the turbine speed sensor to calculate torque converter slip values. It can detect if the torque converter is stuck off (unlocked) or stuck on (locked) by comparing TCC slip speed to a preset value in the TCM calibration. The DTC P0741 sets when the TCM detects a slip speed exceeding...

CIRCUIT DESCRIPTION:The transmission TCC solenoid is a pressure control solenoid used to control the rate of TCC apply and release. The TCM applies and releases the TCC by varying the amount of electrical current through a low side driver. The TCM uses data received from the engine speed sensor and the turbine speed sensor to calculate torque converter slip values. It can detect if the torque converter is stuck off (unlocked) or stuck on (locked) by comparing TCC slip speed to a preset value in the TCM calibration. DTC P0742 sets when the TCM detects minimal converter slip speed for...

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. The Pressure Switch 1 (PS1) monitors the SS1 valve positioning and relays it to the TCM. When PS1 is in the open state, SS1 valve should be in the destroked position. DTC P0751 sets when the SS1 valve is commanded on and PS1 status remains Exhausted/OFF for a period of time that is temperature dependent. The intent of this DTC is to detect a shift valve timeout condition which normally indicates a stuck shift valve in...

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. The Pressure Switch 1 (PS1) monitors the SS1 valve positioning and relays it to the TCM. When PS1 is in the open state, SS1 valve should be in the destroked position. DTC P0752 sets when the SS1 valve is commanded on and PS1 status remains Exhausted/OFF for a period of time that is temperature dependent. The intent of this DTC is to detect a shift valve timeout condition which normally indicates a stuck shift valve in...