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Home >> Toyota >> 2003 >> MR2 C56 >> Repair and Diagnosis >> External Pages >> Different car >> Section 55 (Automatic Transmission Diagnosis - U140E & U140F) >> Diagnostic Tests >> DTC P0773: Shift Solenoid Circuit Malfunction (Es 300 & RX 300) >> Diagnostic Procedure

Diagnostic Procedure

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  1. Disconnect the solenoid connector at the transaxle. Check the harness connector between terminal DSL and the ECM terminal DSL for continuity. If continuity is found, go to next step. If no continuity is found, repair or replace wiring harness and connector.
  2. Raise and support vehicle. Remove transaxle oil pan. See LUBRICATION in appropriate AUTOMATIC article in TRANSMISSION SERVICING. Remove the shift solenoid valve connector and remove the shift solenoid. Measure resistance between terminal SL of the shift valve and the solenoid body. Resistance should be 11-15 ohms. If within specification, go to next step. If not, connect battery voltage to solenoid positive terminal and ground solenoid body. If the solenoid does not operate, replace the solenoid. If it does operate, go to next step
  3. Repair or replace the wiring harness and connector.
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