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TRANSMISSION CONTROL SYSTEM (4L30–E) 7A1–87 DTC P1860 TCC PWM Solenoid Electrical Step Action Yes No 1 Were you sent here from the “Powertrain On–Board Diagnostic Go to Step 2 Go to OBD System Check Refer to Driveability and Emissions in Engine section 2 1. Install the scan tool. NOTE: Before clearing DTC(s), use the scan tool to record “Freeze 3. Record the DTC “Freeze Frame” and “Failure Records”. Go to Step 3 Go to Step 4 3 Using the J39200 DVOM, back probe between PCM connector Is the voltage 0 ? Go to Step 5 Go to Step 6 4 1. Apply brake pedal and select transmission range “D”. 4th. Does the scan tool display DTC P1860 at TCC “ON”? Go to Step 10 Go to Diagnostic Aids 5 1. Turn the ignition “off”. PCM connector terminals S–51 and S–33. Is the resistance 10 ± 0.5 ohms at 20 ° C (68 ° F) ? Go to Step 7 Go to Step 8 6 The wiring harness between PCM connector terminal S–51 and Was a problem found and corrected? Go to Step 19 Go to Step 20 7 Intermittent condition. Was a problem found and corrected? Go to Step 19 Go to Step 20 8 1. Disconnect the transmission 4–way connector H–54. terminal H54–2 and ground. Is the resistance 10 ± 0.5 ohms at 20 ° C (68 ° F) ? Go to Step 16 Go to Step 9 9 1. Disconnect the transmission adapter case connector M–6. terminal M6–1(A) and ground. Is the resistance 10 ± 0.5 ohms at 20 ° C (68 ° F) ? Go to Step 17 Go to Step 18 10 1. Turn the ignition “off”. terminals S–51 and S–33. Is the resistance 10 ± 0.5 ohms at 20 ° C (68 ° F) ? Go to Step 19 Go to Step 11 11 1. Disconnect the transmission 4–way connector H–54. terminal H54–2 and ground. Is the resistance 10 ± 0.5 ohms at 20 ° C (68 ° F) ? Go to Step 13 Go to Step 12 |