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Ignition Timing

WARNING: This page is about a different car, the 1997 Lexus SC 400. However, it is still accessible from the selected car via links, so may be relevant.
IGNITION TIMING (Degrees BTDC @ RPM)

Application (1) Base Timing (2) Controlled Timing
SC400 8-12 @ 650-750 (3) *
(1) Jumper wire connected between terminals TE1 and E1 of DLC No. 1.
(2) Jumper wire disconnected from DLC No. 1.
(3) Information is not available from manufacturer.