Chevrolet Repair Questions? Ask a Mechanic for Answers ASAP
have you checked the connector and circuit for damaged pins or wiring issues?
The Torque Converter Clutch Width Modulation Solenoid Valve (TCC PWM Solenoid Valve) controls fluid acting on the converter clutch valve, which then controls TCC apply and release. The TCC PWM Sol. Valve attaches to the control valve body within the transmission. Ignition voltage goes directly to the TCC PWM Sol. Valve. The Vehicle Control Modulator (VCM) controls the TCC PWM Sol. Valve by providing a ground path on circuit 418. The current flows through the TCC PWM Sol. Valve coil according to the duty cycle (percentage of ON time). The TCC PWM Sol. Valve provides a smooth engagement of the torque converter clutch by operating on a duty cycle percent of ON time.If the VCM detects a continuous open or short in the TCC PWM Sol. Valve circuit or the TCC PWM Sol. Valve, then DTC P1860 sets. DTC P1860 is a type D DTC. For California emission vehicles DTC P1860 is a type A DTC.
need a tech 2 maybe snap n has it under a functional test?
for which step?
WITH A TEST LIGHT OR DIGITAL VOLTMETER (DVM)
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