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Home >> Toyota >> 2003 >> Highlander Limited, FWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 52 (Automatic Transmission Diagnosis - U140E & U140F) >> Diagnostic Tests >> DTC P0773: Shift Solenoid Circuit Malfunction (CAMRY) >> Diagnostic Procedure

Diagnostic Procedure

WARNING: This page does not describe the selected car, but rather 8 other vehicles, including the 2002 Toyota RAV4, 2002 Toyota Highlander, 2002 Toyota Camry, 2002 Lexus RX 300, and 2001 Toyota RAV4. However, it is still accessible from the selected car via links, so may be relevant.
NOTE: The values given below for "Normal Condition" are representative values, so a vehicle may still be normal even if its value differs from those listed here. Do not depend solely on the "Normal Condition" here when deciding whether or not the part is faulty.
  1. Warm up the engine. Turn ignition off. Connect the OBD-II scan tool or hand-held tester to the DLC3. Turn ignition on and push the OBD-II scan tool or hand-held tester main switch ON. Select the item "LOCK UP" in the ACTIVE TEST and operate the Lock-up solenoid valves on the OBD-II scan tool or hand-held tester. Road test vehicle to at least 36 MPH. Command the DSL solenoid ON. If the solenoid engages, replace the ECM. See appropriate REMOVAL, OVERHAUL & INSTALLATION article in ENGINE PERFORMANCE. If not, go to next step.
  2. Disconnect the solenoid connector from the transaxle. See Figure. Measure resistance between terminal No. 3 and body ground. Resistance should be 11-15 ohms at 68°F (20°C). If resistance is as specified, go to next step. If not, go to step  4.
  3. Connect the transmission harness connector. Disconnect the ECM connector. Measure the resistance between terminal DSL and E1. Resistance should be 11-13 ohms at 68°F (20°C). If resistance is not as specified, repair or replace wiring harness and connector. If resistance is as specified, go to next step.
  4. Raise and support the vehicle. Remove transaxle oil pan. See LUBRICATION in appropriate AUTOMATIC article in TRANSMISSION SERVICING. If solenoid does not operate, replace shift solenoid DSL. If solenoid operates, check and repair wiring harness or connector as necessary.
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