Preliminary Procedures
WARNING: This page is about a different car, the 2008 Cadillac CTS. However, it is still accessible from the selected car via links, so may be relevant.
- Raise and support the vehicle. Refer to Lifting and Jacking the Vehicle .
- Remove the transmission fluid pan and filter. Refer to Automatic Transmission Fluid, Fluid Pan and/or Filter Replacement .
- Remove the transmission electrical connector. Refer to Automatic Transmission Electrical Connector Passage Sleeve Replacement .
- Remove the control solenoid (w/body and TCM) valve assembly from the transmission. Refer to Control Valve Lower Body and Upper Body Replacement .
| Callout | Component Name |
|---|---|
| 1 | Regulated Air Supply |
| 2 | Test Ports |
| 3 | Scan Tool |
| 4 | Test Pressure Gage |
| 5 | Electrical Connector Sleeve |
- Align and install the electrical connector sleeve to the control solenoid (w/body and TCM) valve assembly and secure with the connector slide lock.
- If necessary, clean each side of the filter plate assembly and install the filter plate assembly back on the control solenoid (w/body and TCM) valve assembly. Clean the mounting surface of the DT-47825 . See Special Tools .
- Bolt the DT-47825 to the control solenoid (w/body and TCM) valve assembly mounting surface. See Special Tools . Use the bolts and washers supplied with the tool to attach the test block. Tighten the bolts to 5 N.m (44 lb in).
- Connect the test harness supplied with the DT-47825 to the vehicle harness and to the TCM. See Special Tools . Engage the connector locks.
- Connect shop air to the DT-47825 air inlet. See Special Tools . Do not exceed the recommended air pressure of 620.5-689.4 Kpa (90-100 psi).
- With the ignition ON and the scan tool communicating with the vehicle, command the solenoid in question On and Off. Watch the air pressure gage for a change as you command the solenoid. Refer to Control Solenoid (w/Body and TCM) Valve Assembly Solenoid Performance Test Plate to Component Identification for correct solenoid function and test plate port connections for the solenoid being tested.
- The solenoid should allow air pressure to flow or prevent air pressure flow depending on the solenoid state. The test results are read on the pressure gage.
- Command the solenoid valve On and Off several times to determine the condition of the solenoid in question. Release the test air pressure from the pressure the gage between solenoid tests.
NOTE:
The TCM connector sleeve allows the test tool harness to be correctly orientated for electrical operation of the TCM. Do not connect the test harness to the TCM without using the connector sleeve. Failure to use the sleeve could allow the test harness to be incorrectly positioned which will result in permanent TCM damage.
Control Solenoid (w/Body and TCM) Valve Assembly Solenoid Performance Test Plate to Component Identification
| Solenoid | Test Plate Port | Key On, Engine Off (KOEO) Normal State | Commanded State | |
|---|---|---|---|---|
| *Line PC Solenoid 1 | G | No flow to gage | Increase/Decrease Approximately 68-103 Kpa (10-15 psi) per command | |
| PC Solenoid 2 | C | No flow to gage | On - Full flow to gage | Off - No flow to gage |
| PC Solenoid 3 | A | Full flow to gage | On - Full flow to gage | Off - No flow to gage |
| PC Solenoid 4 | B | No flow to gage | On - Full flow to gage | Off - No flow to gage |
| PC Solenoid 5 | F | No flow to gage | On - Full flow to gage | Off - No flow to gage |
| Shift Solenoid 1 | H | Full flow to gage | Off - No flow to gage | On - Full flow to gage |
| Shift Solenoid 2 | D | No flow to gage | Off - No flow to gage | On - Full flow to gage |
| TCC PC Solenoid | E | No flow to gage | On - Full flow to gage | Off - No flow to gage |
| * Increment solenoid to maximum pressure and then decrease to minimum pressure to ensure full range of operation. | ||||