A federal judge tentatively ruled on Wednesday against Toyota Motor Corp. on a key discovery request, refusing to delay depositions of company executives in the multidistrict litigation over sudden, uncontrolled acceleration.

U.S. District Judge James V. Selna, who grilled Toyota’s lawyers during a hearing in Santa Ana, Calif., put off a final ruling on discovery issues. Instead, he set a July 16 deadline for both parties to submit a joint discovery plan and scheduled another hearing for July 20.