Pressure Test Port Locations

WARNING: This page is about a different car, the 2005 Jeep Grand Cherokee. However, it is still accessible from the selected car via links, so may be relevant.

Fig 1: Torque Converter Pressure Locations

Courtesy of DAIMLERCHRYSLER CORP.

1 - TCC RELEASE

2 - TO COOLER

3 - TCC APPLY

4 - FROM COOLER

5 - LINE PRESSURE SENSOR

Only two pressure ports are supplied on the transmission case. The torque converter clutch apply (3) and release (1) ports are located on the right side of the transmission case. See Fig 1.

Fig 2: Line Pressure Adapter 8259

Courtesy of DAIMLERCHRYSLER CORP.

1 - LINE PRESSURE SENSOR PORT

2 - LINE PRESSURE SENSOR

3 - TOOL 8259

4 - PRESSURE TAP

To determine the line pressure, there are two available methods. The scan tool can be used to read line pressure from the line pressure sensor. The second method is to install Line Pressure Adapter 8259 (3) into the transmission case and then install the pressure gauge and the original sensor (2) into the adapter. This will allow a comparison of the scan tool readings and the gauge reading to determine the accuracy of the line pressure sensor. The scan tool line pressure reading should match the gauge reading within +/-10 psi. See Fig 2.

Fig 3: Valve Body Pressure Tap Adapter 8258-A

Courtesy of DAIMLERCHRYSLER CORP.

1 - RFE TRANSMISSION

2 - TOOL 8258-A

In order to access any other pressure tap locations, the transmission oil pan must be removed, the pressure port plugs removed and Valve Body Pressure Tap Adapter 8258-A (2) installed. The extensions supplied with Adapter 8258-A will allow the installation of pressure gauges to the valve body. See Fig 3.

Fig 4: Pressure Tap Locations

Courtesy of DAIMLERCHRYSLER CORP.

Refer to Fig 4 for correct pressure tap location identification..