Where is the TCC solenoid valve on a car?
Where is the TCC solenoid valve on a car?
The TCC solenoid valve attaches to the transmission case assembly extending into the pump cover. When grounded (energized) by the Powertrain Control Module ( PCM ), the TCC solenoid valve stops converter signal oil from exhausting.
What causes the TCC to engage and disengage?
The TCC solenoid is what actually causes the TCC to engage and disengage. When the TCC solenoid receives a signal from the ECM, it opens a passage in the valve body and hydraulic fluid applies the TCC. When the ECM signal stops, the solenoid closes the valve and pressure is vented causing the TCC to disengage.
How does the converter clutch apply the TCC?
This causes converter signal oil pressure to increase and move the converter clutch apply valve against spring force and into the apply position. In this position, release fluid is open to an exhaust port and converter feed fluid fills the apply fluid circuit. The converter feed fluid applies the TCC.
What happens when the DTC is stuck on p0742?
If any additional transmission related DTC’s appear in addition to the P0742, an electrical failure is likely. Symptoms of a P0742 trouble code may include: Stuck On Indicator Lamp (MIL) illuminated (a.k.a. Check Engine Light) If the torque converter clutch is actually stuck on, the engine may stall at idle.
The TCC solenoid valve attaches to the transmission case assembly extending into the pump cover. When grounded (energized) by the Powertrain Control Module ( PCM ), the TCC solenoid valve stops converter signal oil from exhausting.
This causes converter signal oil pressure to increase and move the converter clutch apply valve against spring force and into the apply position. In this position, release fluid is open to an exhaust port and converter feed fluid fills the apply fluid circuit. The converter feed fluid applies the TCC.
The TCC solenoid is what actually causes the TCC to engage and disengage. When the TCC solenoid receives a signal from the ECM, it opens a passage in the valve body and hydraulic fluid applies the TCC. When the ECM signal stops, the solenoid closes the valve and pressure is vented causing the TCC to disengage.
When does the PCM detect low torque converter slip?
When the PCM detects low torque converter slip when the PCM commands the TCC OFF, then is sets the P0742 code.
