Transmission fluid is drawn from the bottom pan through the filter, case assembly, channel plate assembly, control valve body assembly, and into the oil pump assembly. The pump is mounted on the control valve body assembly. Fluid pressure leaving the pump is controlled by the pressure regulator valve and becomes the main supply of line pressure to the various components and hydraulic circuits. Hot fluid from the torque converter flows through the torque converter clutch (TCC) control valve into the cooler lines to the oil cooler located in the vehicle radiator and auxiliary cooler, if equipped. Cool fluid then returns to lubricate the final drive assembly and other components along the output shaft.

The TFT is greater than 130°C (267°F) for 60 seconds (1 minute).

DTC P0218 is a type C DTC.

DTC P0218 is a type C DTC.

Schematic Reference

Automatic Transmission Controls Schematics

Connector End View Reference

Component Connector End Views

Description and Operation

Transmission General Description

Electrical Information Reference

DTC Type Reference

Powertrain Diagnostic Trouble Code (DTC) Type Definitions

Scan Tool Reference

Control Module References for scan tool information

Special Tools

Ensure the transmission fluid level is at the proper level by performing the Transmission Fluid Check .

1. Perform the Transmission Fluid Check .

⇒	If the level is not within specifications, repair as necessary.

2. Inspect for the following conditions:

•	Transmission line pressure low

•	Refer to Line Pressure Check .

•	Transmission fluid flow through cooler and/or auxiliary cooler, if equipped, is restricted due to the following conditions:

-	Transmission fluid level low

-	A clogged filter

-	A leaking filter or seal

-	Plugged, kinked, or damaged transmission cooler pipes

•	Air flow through the transmission fluid cooler and/or auxiliary cooler, if equipped, is restricted due to the following conditions:

-	Damaged fins

-

Debris

•	Engine overheating due to the following conditions:

-	Low coolant level

-	Inspect coolant temperature, coolant level, and hoses.

-	Restricted air flow

-	Restricted coolant flow

1. Perform the Diagnostic Repair Verification after completing the repair.
2. Refer to Control Module References for transmission control module (TCM) replacement, setup, and programming.
3. Refer to Valve Body and Pressure Switch Replacement.