{"model":"mk4","model_name":"MK4 Supra","vehicle":"Toyota Supra A80 (1993–2002, 2JZ-GE / 2JZ-GTE)","document":"Repair Manual","section":"ATGE","section_name":"A340 Automatic Trans (GE)","page":72,"pages_in_section":98,"title":"Dtc 62 63 No.1 No. 2 Solenoid Valve Circuit","section_header":"AT340E (2JZ-GE) Automatic Transmission — Troubleshooting","ocr_text":"AT1–72\nAT340E (2JZ–GE) AUTOMATIC TRANSMISSION – TROUBLESHOOTING\n\nDTC 62 63 No.1 No. 2 Solenoid Valve Circuit\n\nCIRCUIT DESCRIPTION\nShifting from 1st to O/D is done in combination with ON and OFF of the No.1 and No.2 solenoid valves controlled by ECM. If an open or short circuit occurs in either of the solenoid valves, the ECM controls the remaining normal solenoid to allow the vehicle to be operated smoothly (Fail safe function).\nFail Safe Function\nIf either of the solenoid valve circuits develops a short or an open, the ECM turns the other solenoid ON and OFF to shift to the gear positions shown in the table below. The ECM also turns the lock–up solenoid valve OFF at the same time. If both solenoids malfunction, hydraulic control cannot be performed electronically and must be done manually.\nManual shifting as shown in the following table must be done (In the case of a short circuit, the ECM stops sending current to the short circuited solenoid).\n\nPosition | NORMAL | NO.1 SOLENOID MALFUNCTIONING | NO.2 SOLENOID MALFUNCTIONING | BOTH SOLENOIDS MALFUNCTIONING\nSolenoid valve | Gear | Solenoid valve | Gear | Solenoid valve | Gear | Gear when shift selector is manually operated\nNo.1 | No.2 | | No.1 | No.2 | | No.1 | No.2 | |\n\nD\nON | OFF | 1st | X | ON | 3rd | ON | X | 1st | O/D\nON | ON | 2nd | X | ON | 3rd | OFF | X | O/D | O/D\nOFF | ON | 3rd | X | ON | 3rd | OFF | X | O/D | O/D\nOFF | OFF | O/D | X | OFF | O/D | OFF | X | O/D | O/D\n\n2\nON | OFF | 1st | X | ON | 3rd | ON | X | 1st | 3rd\nON | ON | 2nd | X | ON | 3rd | OFF | X | 3rd | 3rd\nOFF | ON | 3rd | X | ON | 3rd | OFF | X | 3rd | 3rd\n\nL\nON | OFF | 1st | X | OFF | 1st | ON | X | 1st | 1st\nON | ON | 2nd | X | ON | 2nd | ON | X | 1st | 1st\n\nX: Malfunctions\nCheck the No.1 solenoid when diagnostic trouble code 62 is output and check and No.2 solenoid when diagnostic trouble code 63 is output.\n\nDTC No. | Diagnostic Trouble Code Detection Condition | Trouble Area\n62, 63\n(a) Solenoid resistance is 8 Ω or lower (short circuit) when solenoid is energized.\n(b) Solenoid resistance is 100 kΩ or higher (open circuit) when solenoid is not energized.\nThe ECM checks for an open or short circuit in the No.1 and No.2 solenoid circuit when it changes gear position.\nThe ECM records diag. trouble code 62 or 63 if condition (a) or (b) is detected once, but it does not blink the O/D OFF indicator light.\nAfter the ECM detects the condition (a) or (b) continuously 8 times or more in one–trip *, it causes the O/D OFF indicator light to blink until condition (a) or (b) disappears.\nAfter that, if the ECM detects condition (a) or (b) one, it starts blinking the O/D OFF indicator light again.\n• Solenoid valve\n• Harness or connector between solenoid and\n• ECM\n• ECM\n\n* one–trip (1st trip) See page 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transcript of a scanned Toyota factory manual page; verify critical values (torque specs, part numbers) against the image."}