CIRCUIT DESCRIPTION:The TCM requires a switched ignition voltage input and a direct battery voltage input. Battery direct voltage is supplied to pins 10 and 70 at the 80-way connector. DTC P0880 sets during the next ignition cycle if battery power is lost before the power down process is complete and the engine is running. ACTION TAKEN WHEN THE DTC SETS:When the DTC P0880 is active, the following conditions occur:1. The CHECK TRANS light is not illuminated (non-OBD II strategy).2. The DTC is stored in TCM history.3. The TCM loses adaptive information for the drive cycle.4. TCM reverts to previous adaptive...

CIRCUIT DESCRIPTION:The TCM requires input battery voltage which originates direct from the vehicle battery and runs through a 10 amp fuse to TCM pins 10 (wire 110) and 70 (wire 170). DTC P0881 sets when the TCM detects the following:1. Large variations in battery direct voltage.2. When there is a battery direct voltage variation of a calibrated voltage detected for a calibrated time, a fault pending is reported. After a calibrated time a DTC is set with a failure response (voltage variation is determined from minimum and maximum ignition voltage values). ACTION TAKEN WHEN THE DTC SETS:1. Hydraulic default is...

CIRCUIT DESCRIPTION:The TCM requires input battery voltage which originates direct from the vehicle battery and runs through a 10 amp fuse to TCM pins 10 (wire 110) and 70 (wire 170). DTC P0882 sets when the TCM detects the following:Battery direct voltage is detected below 9 volts for a calibrated time. ACTION TAKEN WHEN THE DTC SETS:1. Hydraulic default is commanded. Shift selector position and hydraulic state of logic valves determine range.2. The CHECK TRANS light illuminates (non-OBD II strategy).3. The TCM forces Variable Modulated Main off.4. The TCM inhibits Torque Converter Clutch (TCC) engagement. CONDITIONS FOR CLEARING THE DTC:Use...

CIRCUIT DESCRIPTION:The TCM requires input battery voltage which originates direct from the vehicle battery and runs through a 10 amp fuse to TCM pins 10 (wire 110) and 70 (wire 170). DTC P0883 sets when the TCM detects the following:12V TCM – Battery direct voltage is above 16 volts for a calibrated time.24V TCM – Battery direct voltage is above 32 volts for a calibrated time. ACTION TAKEN WHEN THE DTC SETS:1. Hydraulic default is commanded. Shift selector position and hydraulic state of logic valves determine range.2. The CHECK TRANS light illuminates (non-OBD II strategy).3. The TCM forces Variable Modulated...

CIRCUIT DESCRIPTION:Filter Life Monitor (FM) is a part of OEM 5th Generation Prognostics functionality. When enabled in the TCM, prognostic logic determines control main filter life based on hours accumulated and vehicle mileage. This information is used to determine the remaining control main filter useable life. When the TCM determines the filter life has degraded, a J1939 message is sent to a dash mounted SERVICE TRANS indicator lamp. A flashing SERVICE TRANS indicator lamp informs the driver that the transmission control main filter should be serviced. If the SERVICE TRANS indicator lamp is ignored for 100 hours, a CHECK TRANS...