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 OBDII SCAN TOOL.
- Connect the TOYOTA hand-held tester or OBDII scan tool to the DLC3.

Please refer to the TOYOTA hand-held tester or OBDII scan tool operator's manual for further details.

3. CONNECT TIMING LIGHT TO ENGINE.
4. CHECK IDLE SPEED.
- Race the engine speed at 2,500 rpm for approx. 90 seconds.
- Check the idle speed.

Idle speed: 700±50 rpm





5. INSPECT AND ADJUST 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: 10± 20 BTDC @ Idle
(Transmission in neutral position)





- Loosen the nut. and adjust by turning the distributor.

Ignition timing: 10° BTDC @ idle
(Transmission in neutral position)

- Tighten the nut, and recheck the ignition timing.

Torque: 19 N.m (195 kgf.cm, 14 ft.lb.)

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

Ignition timing: 7 - 19° BTDC @ idle
(Transmission in neutral position)

HINT: The timing mark moves in a range between 7° and 19°.

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