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 OBD II SCAN TOOL
a. Connect the TOYOTA hand-held tester or OBD II scan tool to the DLC3.
b. Please refer to the TOYOTA hand-held tester or OBD II scan tool operator's for further details.
3. CHECK IDLE SPEED
4. CONNECT TIMING LIGHT TO ENGINE
5. INSPECT IGNITION TIMING
a. Using SST, connect terminals TC and CG of the DLC3.
SST 09843-18040
HINT: After engine rpm is kept at 1,000 - 1,500 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 (Transmission in neutral position)
c. Remove the SST from the DLC3.
SST 09843-18020
6. FURTHER CHECK IGNITION TIMING
Ignition timing: 12.5 - 22° BTDC @ idle (Transmission in neutral position)
HINT: The timing mark moves in a range between 12.5° and 22°.
7. DISCONNECT TIMING LIGHT FROM ENGINE
8. DISCONNECT TOYOTA HAND-HELD TESTER OR OBDII SCAN TOOL IDLE SPEED