Ignition Timing: Testing and Inspection

INSPECTION
1. 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 hand-held tester or OBD II scan tool to the DLC3.
Please refer to the hand-held tester or OBD II scan tool operator's manual for further details.





3. CONNECT TIMING LIGHT TO ENGINE
Connect the tester probe of a timing light to the wire of the ignition coil connector for No.1 cylinder.
4. CHECK IDLE SPEED
a. Race the engine speed at 2,500 rpm for approximately 90 seconds. Check the idle speed.
Idle speed: 700 ± 50 rpm
5. INSPECT IGNITION TIMING





a. Using SST, connect terminals TC and E1 of the DLC1.
SST 09843-18020





b. Using a timing light, check the ignition timing.
Ignition timing: 5 - 15° BTDC @ idle (Transmission in neutral position)
c. Remove the SST from the DLC1.
SST 09843-18020
6. DISCONNECT TIMING LIGHT FROM ENGINE
7. DISCONNECT TOYOTA HAND-HELD TESTER OR OBD II SCAN TOOL