DTC P0741. Chevrolet Joy 2008

For 1990-2009 cars

### 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 | Go to Diagnostic System Check - Automatic Transmission

2

1. Turn the ignition OFF.
2. Disconnect the lock-up solenoid wiring connector.
3. Check the resistance between the lock-up solenoid connector terminal 4 and ground.

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

1. After the repair, use a scan tool clear info function and road test the vehicle.
2. Review the DTC info.
3. Observe the DTC Information with a scan tool.

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