For 1990-2009 cars

## DTC P0218 L61

### Circuit Description

The transmission fluid pump is constantly circulating fluid through the torque converter. Hot fluid leaving the converter flows through the transmission cooler lines to the oil cooler, located in the vehicle radiator. From the cooler, the fluid returns to the transmission. Lube 1 fluid flows through the input shaft to lubricate the transmission components in the front of the transmission. The Lube 2 fluid circuit is fed by line pressure at the pressure regulator valve. Lube 2 fluid flows through the oil feed pipes, and into the forward clutch support, and provides lubrication to the rear components of the transmission. When the PCM detects a high transmission fluid temperature for a long period of time, then DTC P0218 sets.

### Conditions for Setting the DTC

DTC P0218 will set if:

• | The transmission fluid temperature is greater than 130°C (260°F) for 10 minutes.

• | No TFT sensor DTCs have been set.

DTC P0218 is a type C DTC.

### Diagnostic Aids

• | Ask the customer about vehicle overloading exceeding the trailer-towing limit, or towing in overdrive.

• | The transaxle oil cooler is restricted.

• | The transaxle oil cooler lines are restricted.

• | The radiator/condenser air flow is restricted.

• | The transaxle fluid level is low.

• | The cooling fans are inoperative.

## DTC P0218 L81

### Circuit Description

The transmission fluid pump is constantly circulating fluid through the torque converter. Hot fluid leaving the converter flows through the transmission cooler lines to the oil cooler, located in the vehicle radiator. From the cooler, the fluid returns to the transmission. Lube 1 fluid flows through the driven sprocket support to lubricate the transmission components in the front of the transmission. The Lube 2 fluid circuit is fed by line pressure at the pressure regulator valve. Lube 2 fluid flows through the oil feed pipes, and into the forward clutch support, and provides lubrication to the rear components of the transmission. When the transaxle control module (TCM) detects a high transmission fluid temperature for a long period of time, DTC P0218 is set.

### Conditions for Setting the DTC

DTC P0218 will set if:

• | The TFT is greater than 130°C (260°F) for 10 minutes.

• | No TFT sensor DTCs have been set.

DTC P0218 is a type C DTC.

### Diagnostic Aids

• | Ask the customer about vehicle overloading exceeding the trailer-towing limit, or towing in overdrive.

• | The transaxle oil cooler is restricted.

• | The transaxle oil cooler lines are restricted.

• | The radiator/condenser air flow is restricted.

• | The transaxle fluid level is low.

• | The cooling fans are inoperative.