For 1990-2009 cars

## DTC P1869 Non-Europe orN. American Emissions

### Circuit Description

The pressure control valves 3, 4, 5, and 6 are precision electronic pressure regulators that control the operation of the clutches, brakes and lock-up clutch.

The valve reduces the system pressure with which the downstream solenoid valves and electrical pressure regulating valves are supplied. It is possible to use smaller solenoid valves as a result. The pressure control valves require a constant input pressure.

### Conditions for Setting the DTC

• | Output ampere of the solenoid valve 6 is less than 10 mA.

• | No DTC P1867, P1868.

• | Immediately after the above condition occurs.

### Action Taken When the DTC Sets

• | The hold lamp will blink.

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

• | Adopt Emergency/Substitute mode and constant 4th gear by hydraulic control.

• | After ignition OFF/ON : 3rd gear by hydraulic control. P, R and N also possible.

• | Power supply cut off to the pressure control solenoid valve.

### Conditions for Clearing the Hold Lamp/DTC

• | The hold lamp 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.

• | Using a scan tool can clear history DTCs.

### Diagnostic Aids

When DTC P1869 sets, the possible cause of fault could be the pressure control valve 6.

#### DTC P1869

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. Install a scan tool.
2. Turn ON the ignition, with the engine OFF.
3. Select "Actuating" on the scan tool.
4. Actuate pressure control valve 6 ON/OFF.

Does the valve change ON/OFF?

--

Go to Diagnostic Aids

Go to Step 3

3 |

1. Turn the ignition OFF.
2. Disconnect the transaxle wiring connector.
3. Measure the resistance between terminals 5 and 11 of the transaxle wiring connector.

Is the resistance within the specified value?

TFT 25°C (77°F)

6 ohms

Go to Step 7

Go to Step 4

4 |

1. Remove the oil pan.
2. Disconnect the wiring connector of pressure control solenoid valve 6.
3. Measure the resistance between terminal 2 of the solenoid valve 6 and terminal 5 of the transaxle connector.
4. Measure the resistance between terminal 1 of the solenoid valve 6 and terminal 11 of the transaxle connector.

Is the resistance within the specified value?

∞

Go to Step 6

Go to Step 5

5 |

1. Repair the circuit between terminal 2 and terminal 5 for an open.
2. Repair the circuit between terminal 1 and terminal 11 for an open.

Is the repair complete?

--

System OK

--

6 | Replace solenoid valve 6. Is the replacement complete? | -- | System OK | --
7 |

1. Disconnect the transaxle wiring connector and transmission control module (TCM) connector.
2. Measure the resistance between terminal 5 of the transaxle wiring connector and terminal C7 of the TCM wiring connector.
3. Measure the resistance between terminal 11 of the transaxle wiring connector and terminal A12 of the TCM wiring connector.

Is the resistance within the specified value?

0 ohms

Go to Step 9

Go to Step 8

8 | Repair the transaxle wiring harness for an open. Is the repair complete? | -- | System OK | --
9 | Replace the TCM. Refer to Transmission Control Module Replacement . Is the replacement complete? | -- | Go to Step 10 | --
10 |

1. After the repair, use a scan tool "clear info" function and road tests the vehicle.
2. Review the "DTC info".

Has the last test failed or is the current DTC displayed?

--

Go to Step 2

System OK

## DTC P1869 European and N. American Emissions

### Circuit Description

The pressure control valves 3, 4, 5, and 6 are precision electronic pressure regulators that control the operation of the clutches, brakes and lock-up clutch.

The valve reduces the system pressure with which the downstream solenoid valves and electrical pressure regulating valves are supplied. It is possible to use smaller solenoid valves as a result. The pressure control valves require a constant input pressure.

### Conditions for Setting the DTC

• | Output ampere of the solenoid valve 6 is less than 10 mA.

• | No DTC P1867, P1868.

• | Immediately after the above condition occurs.

### Action Taken When the DTC Sets

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

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

• | Adopt Emergency/Substitute mode and constant 4th gear by hydraulic control.

• | Power supply cut off to the pressure control solenoid valve.

### 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.

• | Using a scan tool can clear history DTCs.

### Diagnostic Aids

When DTC P1869 sets, the possible cause of fault could be the pressure control valve 6.

#### DTC P1869

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. Install a scan tool.
2. Turn ON the ignition, with the engine OFF.
3. Select "Actuating" on the scan tool.
4. Actuate pressure control valve 6 ON/OFF.

Does the valve change ON/OFF?

--

Go to Diagnostic Aids

Go to Step 3

3 |

1. Turn the ignition OFF.
2. Disconnect the transaxle wiring connector.
3. Measure the resistance between terminals 5 and 11 of the transaxle wiring connector.

Is the resistance within the specified value?

TFT 25°C (77°F)

6 ohms

Go to Step 7

Go to Step 4

4 |

1. Remove the oil pan.
2. Disconnect the wiring connector of pressure control solenoid valve 6.
3. Measure the resistance between terminal 2 of the solenoid valve 6 and terminal 5 of the transaxle connector.
4. Measure the resistance between terminal 1 of the solenoid valve 6 and terminal 11 of the transaxle connector.

Is the resistance within the specified value?

∞

Go to Step 6

Go to Step 5

5 |

1. Repair the circuit between terminal 2 and terminal 5 for an open.
2. Repair the circuit between terminal 1 and terminal 11 for an open.

Is the repair complete?

--

System OK

--

6 | Replace solenoid valve 6. Is the replacement complete? | -- | System OK | --
7 |

1. Disconnect the transaxle wiring connector and transmission control module (TCM) connector.
2. Measure the resistance between terminal 5 of the transaxle wiring connector and terminal C7 of the TCM wiring connector.
3. Measure the resistance between terminal 11 of the transaxle wiring connector and terminal A12 of the TCM wiring connector.

Is the resistance within the specified value?

0 ohms

Go to Step 9

Go to Step 8

8 | Repair the transaxle wiring harness for an open. Is the repair complete? | -- | System OK | --
9 | Replace the TCM. Refer to Transmission Control Module Replacement . Is the replacement complete? | -- | Go to Step 10 | --
10 |

1. After the repair, use a scan tool "clear info" function and road tests the vehicle.
2. Review the "DTC info".

Has the last test failed or is the current DTC displayed?

--

Go to Step 2

System OK