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3 CHECK CONTROL VALVE 1. Disassemble control valve assembly. Refer to AT-312. I Valve, sleeve and plug slide along valve bore under their own weight. I Valve, sleeve and plug are free from burrs, dents and scratches. I Control valve springs are free from damage, deformation and fatigue. I Hydraulic line is free from obstacles. SAT367H OK or NG OK © GO TO 4. NG © Repair control valve. 4 CHECK SHIFT UP (D 3 TO D 4 ) Does A/T shift from D 3 to D 4 at the specified speed? OK or NG OK © GO TO 5. NG © Check control valve again. Repair or replace control valve assembly. 5 CHECK DTC Perform Diagnostic Trouble Code (DTC) confirmation procedure, AT-157. OK or NG OK © INSPECTION END NG © GO TO 11. Check for proper lock-up. GI MA EM LC EC FE AX SU BR ST RS BT HA SC EL IDX DTC P0744 A/T TCC S/V FUNCTION (LOCK-UP) Diagnostic Procedure (Cont’d) AT-161 |