Ignition Timing

CAUTION: Some tachometers may not be compatible with ignition system. Consult tachometer manufacturer before connecting tachometer to system. To avoid possible damage to ignitor and/or coil, DO NOT allow tachometer terminal to become grounded.

Warm engine to normal operating temperature. Shut engine off. Connect timing light. Connect tachometer to proper terminals of data link connector. See Fig 1.
Install Jumper Wire (SST 09843-18020) between terminals TE1 and E1 of data link connector located in engine compartment. See Fig 2. Start engine. Ensure idle speed is within specification.
Ensure base timing is within specification with engine at specified RPM. See IGNITION TIMING table.

NOTE: Timing marks are located on front cover.

IGNITION TIMING

Application ⁽¹⁾

⁽²⁾ Base Timing

⁽³⁾ Advance Timing

Corolla

10 @ 700

5-15 @ 700

⁽¹⁾	With transmission/transaxle in Neutral and parking brake applied.

⁽²⁾	Check with jumper wire installed between data link connector terminals TE1 and E1.

⁽³⁾	Check with jumper wire removed from data link connector.

Fig 1: Connecting Tachometer

Fig 2: Installing Jumper Wire Between Data Link Connector Terminals