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AT-78 AUTOMATIC TRANSMISSION (DIAGNOSTICS) DIAGNOSTIC PROCEDURE WITH DIAGNOSTIC TROUBLE CODE (DTC) 5 CHECK POOR CONTACT. There is poor contact. Repair poor con- Replace TCM. 6 CHECK SHIFT SOLENOID 2 (IN TRANSMIS- bracket. 2) Drain automatic transmission fluid. CAUTION: Do not drain the automatic transmission flu- 3) Remove oil pan, and disconnect connector from shift solenoid 2. 4) Measure resistance between shift solenoid 2 connector and transmission ground. Connector & terminal No. 1 — Transmission ground: Is the measured value within the specified 10 — 16 Ω Replace shift sole- 7 CHECK HARNESS CONNECTOR BETWEEN Connector & terminal (AT6) No. 1 — (T4) No. 2: Is the measured value less than the specified 1 Ω Repair open circuit 8 CHECK HARNESS CONNECTOR BETWEEN Connector & terminal (T4) No. 2 — Transmission ground: Does the measured value exceed the specified 1 M Ω Even if “POWER” Repair short circuit Step Value Yes No |