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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 (RAV4) >> Diagnostic Procedure

Diagnostic Procedure

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  1. Access ECM. See Figure-Figure . Disconnect appropriate ECM connector. Disconnect 10-pin solenoid connector located above PNP switch on side of transaxle. See Figure. Using a DVOM, check circuit for continuity between ECM connector terminal DSL and solenoid connector DSL. See PIN VOLTAGE TESTS . If continuity exists, go to next step. If continuity does not exist, check and repair wiring harness or connector as needed.
  2. Raise and support vehicle. Remove transaxle oil pan. See LUBRICATION in appropriate AUTOMATIC article in TRANSMISSION SERVICING. Disconnect shift solenoid DSL connector. See Figure. Remove solenoid. Using a DVOM, measure resistance between solenoid body and solenoid connector terminal. Resistance should be 11-13 ohms at 68°F (20°C). If resistance is not as specified, replace solenoid. If resistance is as specified, go to next step.
  3. Connect jumper wire from positive battery post to solenoid connector terminal and add an additional jumper wire from negative battery post to solenoid body. 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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