Overhaul - 3L30: Specifications Geo Tracker I

No Torque Converter Clutch Application

Check for 12 volt power supply to transmission, good ground in transmission, faulty harness connections, defective pressure switch, sticking converter clutch control valve, cut or leaking TCC solenoid valve "O" ring, damaged or mis-positioned oil pump wear plate, incorrectly tighten converter housing-to-oil pump bolts and/or cut turbine shaft "O" ring.

No Torque Converter Clutch Release or Shudder

Check for sticking TCC control valve, restricted TCC apply passage, low fluid level, low fluid pressure, poor engine performance and/or cut turbine shaft "O" ring.

TORQUE CONVERTER CLUTCH (TCC)

Note. TCC will operate only under the following conditions; Throttle valve opening is more than 7 degrees and less than 62 degrees. Engine coolant temperature is more than 140°F (60°C). Brake pedal released. Transmission fluid pressure is below 59.7 PSI (420 kPa).

1. Ensure ignition is in LOCK position. Disconnect Electronic Control Module (ECM). (Scheme 1) Disconnect ECM 17-pin harness connector. Using DVOM, measure voltage between harness connector terminal B11 and ground. Turn ignition on. If battery voltage is present, go to step 4.
2. If battery voltage is not present, measure voltage between TCC relay harness connector terminal No. 3 (White/Red wire) and ground. TCC relay is located in fusible link box, on right side of engine compartment. DO NOT disconnect connector. If battery voltage is present, inspect and repair circuit between relay and ECM.
3. If battery voltage is not present, check for battery voltage at TCC relay harness connector terminal No. 1 (Blue/Black wire). DO NOT disconnect connector. If battery voltage is present, inspect and repair relay connection as needed. If connection is okay, replace relay. If battery voltage is not present, inspect and repair circuit between main relay and TCC relay. See appropriate wiring diagram in WIRING DIAGRAMS article.
4. Disconnect harness connector at transmission. Using test light, probe harness connector terminal No. 2 (White wire). Backprobing TCC relay connector, connect jumper wire between connector No. 3 (White/Red wire) and ground.
5. If test light illuminates, inspect pressure switch. Replace as needed. If switch is okay, replace ECM and retest.
6. If test light does not illuminate, backprobe TCC relay terminal No. 4 (White wire) with test light. DO NOT disconnect jumper wire. If test light illuminates, inspect and repair circuit between transmission and relay. See wiring diagram in WIRING DIAGRAMS section.
7. If test light does not illuminate, remove jumper wire. Using test light, backprobe TCC relay terminal No. 2 (White/Red wire). If test light illuminates, replace relay and retest. If test light does not illuminate, inspect circuit from IG-COIL fuse to relay, including brake light switch. Repair as needed.

Scheme 1

TORQUE CONVERTER

Note. Torque converter is a sealed unit and must be serviced as complete assembly. Perform following tests to check converter condition. Torque converter and transmission cooler must be thoroughly cleaned and flushed if transmission fluid is contaminated.

TORQUE CONVERTER STATOR (ONE-WAY CLUTCH) TEST

Insert finger into splined inner race of roller clutch and try to turn race in both directions. Clutch should lock when rotated counterclockwise, and turn freely when rotated clockwise. Replace converter if clutch fails test.

TORQUE SPECIFICATIONS

TORQUE SPECIFICATIONS