Circuit Description
The lock-up clutch will not engage.
DTC Descriptor
This diagnostic procedure supports the following DTC: DTC P0741 Torque Converter Clutch (TCC) Stuck Off
Conditions for Running the DTC
| • | Lock-up duty cycle is 95 percent. |
| • | The transaxle is in the Drive position. |
| • | Engine speed is greater than 460 RPM. |
| • | Throttle position is greater than 13 percent. |
| • | The temperature of the TFT sensor is between 20°C (68°F) and 100°C (212°F). |
Conditions for Setting the DTC
Engine speed/Turbine speed is grater than 40 RPM plus vehicle speed divided by 2.
Action Taken When the DTC Sets
| • | The TCM requests illumination of the malfunction indicator lamp (MIL) and store the DTC when the TCM detects failures on two consecutive driving cycles. |
| • | Lock-up control is inhibited. |
Conditions for Clearing the MIL/DTC
| • | The MIL will turn OFF when the malfunction has not occurred after 3 consecutive driving cycles and the ECM turns off the MIL on the next driving cycle (MIL off at the 4th driving cycle). |
| • | A history DTC will clear after 40 consecutive warm-up cycles without a fault. |
| • | Clear the DTCs with a scan tool. |
Conditions for Clearing the DTC
| • | A scan tool can clear the DTC. |
| • | The PCM clears the DTC from PCM history if the vehicle completes 40 warm-up cycles without a non-emission related diagnostic fault occurring. |
| • | The PCM cancels the DTC default actions when the fault no longer exists and the DTC passes. |
Step | Action | Values | Yes | No |
|---|---|---|---|---|
1 | Did you perform the Diagnostic System Check - Automatic Transmission? | -- | Go to Step 2 | |
2 |
Is the resistance in the specified range? | 13 ohms 20°C (70°F) | Go to Step 3 | Go to Step 5 |
3 | Perform a continuity check between the lock-up solenoid connector terminal 4 and the TCM connector Terminal 3. Is there continuity? | Go to Step 4 | Go to Step 5 | |
4 | Replace the Lock-up solenoid. Does the lock-up solenoid operate correctly? | -- | Go to Step 7 | Go to Step 6 |
5 | Repair the wiring harness as necessary. Refer to Wiring Repairs . Is the action complete? | -- | Go to Step 7 | -- |
6 | Replace the TCM. Refer to Transmission Control Module Replacement . Is the action complete? | -- | Go to Step 7 | -- |
7 |
Did the last test fail or is the current DTC displayed? | -- | Go to Step 8 | System OK |
8 | Replace the Torque converter assembly. Refer to Transmission Replacement . Is the repair completed? | System OK | Go to Step 2 |
