Ignition Timing: Testing and Inspection
INSPECTION1. REMOVE V-BANK COVER
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 handheld tester or OBDII scan tool to the DLC3.
b. Please refer to the LEXUS handheld tester or OBDII scan tool operator's manual for further details.
c. Start the engine at idle.
d. Check the ignition timing.
Ignition timing: 8 - 12° BTDC @ idle (Transmission in neutral position)
e. Disconnect a LEXUS handheld tester or OBDII scan tool from the DLC3.
4. When not using LEXUS handheld tester or OBDII scan tool:
INSPECT IGNITION TIMING
a. Connect tachometer test probe to terminal IG(-) of the check connector.
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 E1 of the DLC1.
SST 09843-18020
d. Start the engine at idle.
e. Check the ignition timing.
Ignition timing: 8 - 12 BTDC @ idle (Transmission in neutral position)
f. Remove the SST from the DLC1.
SST 09843-18020
g. Remove the timing light from the engine.
h. Remove the tachometer.
5. REINSTALL V-BANK COVER IDLE SPEED