Ignition Timing: Testing and Inspection

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

2. CONNECT LEXUS HAND-HELD TESTER OR OBDII SCAN TOOL



- Connect the LEXUS hand-held tester or OBDII scan tool to the DLC3.
Please refer to the LEXUS hand-held tester or OBDII scan tool operator's manual for further details.

3. CONNECT TIMING LIGHT TO ENGINE
4. CHECK IDLE SPEED
5. INSPECT AND ADJUST IGNITION TIMING



- Using a jumper wire (or SST 09843-18020), connect terminals TE1 and E1 of the DLC1.



- Using a timing light. check the ignition timing.

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




- Loosen the nut, and adjust by turning the distributor.
- Tighten the nut. and recheck the ignition timing.
Torque: 19 Nm (195 kgf.cm. 14 ft.lb)
- Remove the SST from the DLC1.

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 LEXUS HAND-HELD TESTER OR OBDII SCAN TOOL