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TRANSMISSION CONTROL SYSTEM (4L30–E) 7A1–27 DTC P0218 Transmission Fluid Over Temperature D07RW029 Circuit Description The Transmission Fluid Temperature (TFT) sensor is a ° C (212 ° F), the sensor resistance becomes less and the voltage decreases to 1.5 to 2.0 volts. Conditions For Setting The DTC D No TFT DTCs P0712 or P0713. D TFT is greater than 135 ° C (275 ° F). D All conditions met for 21 seconds. Action Taken When The DTC Sets D Hot mode TCC Shift Pattern. D The PCM will not illuminate the CHECK TRANS D ATF Lamp ON. (TFT is greater than 145 ° C (293 ° F).) D Disable E–side TCC OFF request. Conditions For Clearing The DTC 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 Inspect the wiring for poor electrical connections at Also check for a chafed wire that could short to bare D When diagnosing for a possible intermittent short or D Check harness routing for a potential short to ground D Scan tool TFT sensor temperature should rise ° C (212 ° F), then stabilize. D Check for a “skewed” (mis–scaled) sensor by D Check for a possible torque converter stator problem. D Verify customer driving habits, trailer towing, etc. Test Description The numbers below refer to the step numbers on the circuit. 3. This test simulates a TFT DTC P0713. |