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7A1–82 TRANSMISSION CONTROL SYSTEM (4L30–E) DTC P1870 Transmission Component Slipping (TCC Stuck OFF) D07RY002 Circuit Description The PCM monitors the difference in engine speed and Conditions For Setting The DTC The following conditions are met for three TCC cycles D No OSS DTCs P0722 or P0723. D No shift solenoid A DTCs P0751 or P0752 or P0753. D No shift solenoid B DTCs P0756 or P0757 or P0758. D No TCC solenoid DTCs P0742 or P1860 or P1870. D Engine speed is between 1,000 and 3,500 rpm for 0.5 D Gear range is D4. D 13% < TPS < 99% D 50 < Engine Torque < 300 N·m D TFT is between 20 ° and 150 ° C (68 ° and 302 ° F). D TCC slip speed is between 250 rpm and 800 rpm for 3 D Vehicle speed is between 25 km/h (15 mph) and 225 D Speed ratio is between 0.6 and 0.95. D ECCC is “ON”. D Low (0.8) < TCC Capacity < hi (0.99) for 5 seconds Action Taken When The DTC Sets D Only stored in memory. D For lamp illuminate refer to DTC type definition (type Conditions For Clearing The MIL/DTC D The PCM will turn off the MIL and CHECK TRANS D The DTC can be cleared from the PCM history by D The DTC will be cleared from history when the vehicle D The PCM will cancel the DTC default actions when Diagnostic Aids D Range switch malfunction could set a DTC P1870. D A mechanical failure of the shift solenoids, TCC D Internal transmission failures may set a DTC P1870. D An intermittent or incorrect engine speed signal may |