Ignition Timing: Testing and Inspection

INSPECT IGNITION TIMING
a. When using LEXUS hand-held tester:
1. Connect a LEXUS hand-held tester to the DLC3.





2. Please refer to the LEXUS hand-held tester operator's manual for further details.
3. Start the engine at idle.





4. Using a timing light, check the ignition timing.
Ignition timing: 8 - 12° BTDC @ idle (Transmission in neutral position)
5. Disconnect the LEXUS hand-held tester from the DLC3.
b. When not using LEXUS handheld tester:





1. Using SST, connect tachometer probe to terminal TAC of the DLC3.
SST 09843-18030





2. Connect the tester probe of a timing light to the yellow lead wire of the ignition coil connector for No. 1 cylinder.





3. Using SST, connect terminals TC and CG of the DLC3.
SST 09843-18040
4. Using a timing light, check the ignition timing.
Ignition timing: 8 - 12° BTDC @ idle (Transmission in neutral position)
5. Remove the SST from the DLC3.
6. Disconnect the timing light from the engine.
7. Disconnect the tachometer from the DLC3.