DTC P0715. Chevrolet Joy 2008

For 1990-2009 cars

### Circuit Description

The transmission control module (TCM) receives the input shaft speed signal through the turbine speed sensor. This signal is used to control torque converter lock-up.

### Conditions for Running the DTC

• | Transmission in Drive range

• | Engine speed is more than 1,500 RPM.

• | Vehicle speed is more than 40 km/h (25 mph).

• | The voltage of the transmission fluid temperature sensor is between 0.1 and 2.4 volts.

• | Throttle position is more than 13 percent.

### Conditions for Setting the DTC

Turbine speed is less than 600 RPM for more than 2 seconds.

### Action Taken When the DTC Sets

• | The malfunction indicator lamp (MIL) will illuminate.

• | The TCM will record operating conditions at the time the diagnostic fails. This information will be stored in the Failure Records buffer.

### Conditions for Clearing the MIL/DTC

• | The MIL will turn OFF when the malfunction has not occurred after 3 ignition cycles.

• | A history DTC will clear after 40 consecutive warm-up cycles without a fault.

• | Clear the DTCs with a scan tool.

### Diagnostic Aids

When DTC P0715 sets, the possible cause of the fault could be the input speed sensor (ISS).

Step | Action | Values | Yes | No
--- | --- | --- | --- | ---
1 | Did you perform the Diagnostic System Check - Vehicle? | -- | Go to Step 2 | Go to Diagnostic System Check - Vehicle

2

1. Turn the ignition OFF
2. Disconnect the TCM wiring connector.
3. Turn the ignition ON with the engine OFF.
4. Measure the voltage of terminal 9.

Is the voltage reading in the specified range?

0 V

Go to Step 3

Go to Step 5

3

1. Disconnect the input speed sensor wiring connector.
2. Measure the resistance between terminal 1 and terminal 2 of the turbine sensor.

Is the resistance within the values shown?

540 ohms (20°C)

Go to Step 5

Go to Step 4

4 | Replace the turbine speed sensor. Is the action complete? | -- | System OK | --

5

1. Disconnect the turbine speed sensor wiring connector and transmission control module (TCM) connector.
2. Check for continuity between the turbine speed terminals 1 and 2 of the transmission wiring connector and terminals A 1 and A 2 of the TCM wiring connector.

Is there continuity?

Go to Step 7

Go to Step 6

6 | Repair the wiring harness as necessary. Refer to Wiring Repairs . Is the action complete? | -- | System OK | --
7 | Replace the TCM. Refer to Transmission Control Module Replacement . Is the action complete? | -- | Go to Step 8 | --

8

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 2

System OK