Ignition Timing: Testing and Inspection
INSPECTION1. WARM UP ENGINE
Allow the engine to warm up to normal operating temperature.
2. CONNECT TOYOTA HAND-HELD TESTER OR OBDII SCAN TOOL
a. Connect the TOYOTA hand-held tester or OBDII scan tool to the DLC3.
b. Please refer to the TOYOTA hand-held tester or OBDII scan tool operator's for further details.
3. CHECK IDLE SPEED
4. CONNECT TIMING LIGHT TO ENGINE
Connect the tester probe of a timing light to the black-white lead wire of the ignition coil connector for No. 1 cylinder.
5. INSPECT IGNITION TIMING
a. Using SST, connect terminals TE1 and E1 of the DLC1.
SST 09843-18020
HINT: After engine rpm is kept at 1,000 - 1,300 rpm for 5 seconds, check that it returns to idle speed.
b. Using a timing light, check the ignition timing.
Ignition timing: 8 - 12° BTDC @ idle
c. Remove the SST from the DLC1.
6. FURTHER CHECK IGNITION TIMING
Ignition timing: 6 - 15° BTDC @ idle
HINT: The timing mark moves in a range between 6° and 15°.
7. DISCONNECT TIMING LIGHT FROM ENGINE
8. DISCONNECT TOYOTA HAND-HELD TESTER OR OBDII SCAN TOOL