Ignition Timing: Testing and Inspection

1. WARM UP ENGINE: Allow the engine to warm up to normal operating temperature.





2. CONNECT TOYOTA HAND-HELD TESTER OR OBD II SCAN TOOL
- Connect the TOYOTA hand-held tester or OBD II scan tool to the DLC3.
- Please refer to the TOYOTA hand - held tester or OBD II scan tool operators manual for further details.





3. CHECK IGNITION TIMING.
- Using SST. connect terminals TE1 and E1 of the DLC1.
- SST 09843-18020

HINT: After engine speed is kept at about 1,000 rpm for 5 seconds. check that it returns to idle speed.

- Using a timing light, connect the test probe to the No.1 high-tension cord.





- Check ignition timing.

Ignition timing: 3 - 7° BTDC @ idle.

- Remove the SST from the DLC1.
- SST 09843-18020
4. FURTHER CHECK IGNITION TIMING.

Ignition timing: 7 - 18° BTDC @ idle.

HINT: The timing mark moves in a range between 7° and 18°.

5. DISCONNECT TOYOTA HAND-HELD TESTER OR OBD II SCAN TOOL, AND TIMING LIGHT.