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TRANSMISSION CONTROL SYSTEM (4L30–E) 7A1–39 Resistance Chart ° C ° F Resistance (k W ) –40 –40 672 0 32 65 20 68 25 80 176 2.5 120 248 0.78 150 304 0.37 DTC P0712 Transmission Fluid Temperature (TFT) Sensor Circuit Low Input Step Action Yes No 1 Perform the transmission fluid checking procedure. Refer to Was the fluid checking procedure performed? Go to Step 2 Refer to Checking Transmission Fluid Level and Condition in Automatic Transmission (4L30–E) section 2 1. Install the scan tool. NOTE: Before clearing DTC(s), use the scan tool to record “Failure 3. Record the DTC “Failure Records”. Does the scan tool display a TFT sensor signal voltage less than Go to Step 3 Go to Diagnostic Aids 3 1. Turn the ignition “off”. Does the TFT signal voltage change to match the voltage 4.92 Go to Step 4 Go to Step 9 4 Using the J39200 DVOM, measure the resistance between Is the resistance within specifications? (See Resistance Chart.) Go to Diagnostic Aids Go to Step 5 5 1. Disconnect the transmission 5–way connector M–6. terminals 3(C) and 5(D). Is the resistance within specifications? (See Resistance Chart.) Go to Diagnostic Aids Go to Step 6 6 1. Remove the transmission oil pan. Refer to Transmission Oil Temperature Sensor (Adapter Case) in Automatic 2. Check the internal wiring harness for a short to ground. Was a problem found? Go to Step 8 Go to Step 7 7 1. Disconnect the internal wiring harness at the TFT sensor. Is the resistance within specifications? (See Resistance Chart.) Go to Diagnostic Aids Go to Step 8 8 Replace the TFT Sensor. Is the replacement complete? Go to Step 12 — |