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 operator's manual for further details.

3. CONNECT TIMING LIGHT TO ENGINE
4. CHECK IDLE SPEED
- Race the engine speed at 1,000 rpm for approx. 5 seconds.
- Check the idle speed.

Idle speed: 700 ± 50 rpm
(Transmission in neutral position and A/C OFF)





5. INSPECT IGNITION TIMING
- Using SST, connect terminals TE1 and E1 of the DLC1.
SST 09843-18020





- Using a timing light, check the ignition timing.

Ignition timing: 8 - 12° BTDC @ idle
(Transmission in neutral position)

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

Ignition timing: 3 - 19° BTDC @ idle
(Transmission in neutral position)

HINT: The timing mark moves in a range between 3° and 19°.

7. DISCONNECT TIMING LIGHT FROM ENGINE
8. DISCONNECT TOYOTA HAND-HELD TESTER OR OBD II SCAN TOOL