Ignition Timing: Testing and Inspection
INSPECTION1. REMOVE V-BANK COVERED ENGINE ROOM SIDE COVER LH
2. WARM UP ENGINE
Allow the engine to warm up to normal operating temperature.
3. When using LEXUS handheld tester or OBDII scan tool:
INSPECT IGNITION TIMING
a. Connect a LEXUS hand-held tester or OBDII scan tool to the DLC3.
b. Please refer to the LEXUS hand-held tester or OBDII scan tool operator's manual for further details.
c. Start the engine at idle.
d. Using a timing light, check the ignition timing.
Ignition timing: 8 - 12° BTDC @ idle (Transmission in neutral position)
e. Disconnect a LEXUS hand-held tester or OBDII scan tool from the DLC3.
4. When not using LEXUS hand-held tester or OBDII scan tool:
INSPECT IGNITION TIMING
a. Using SST, connect tachometer prove to terminal TAC of the DLC3.
SST 09843-18030
b. Connect the tester probe of a timing light to the yellow lead wire of the ignition coil connector for No.1 cylinder.
c. Using SST, connect terminals TC and CG of the DLC3.
SST 09843-18040
d. Using a timing light, check the ignition timing.
Ignition timing: 8 - 12° BTDC @ idle (Transmission in neutral position)
e. Remove the SST from the DLC3.
SST 09843-18040
f. Disconnect the timing light from the engine.
g. Disconnect the tachometer from the DLC3.
5. REINSTALL V-BANK COVER AND ENGINE ROOM SIDE COVER LH