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 manual for further details.
3. CONNECT TIMING LIGHT TO ENGINE
Connect the tester probe of a timing light to the No.1 high-tension cord for No.4 cylinder.
4. CHECK IDLE SPEED
a. Race the engine speed at 2,500 rpm for approximately 90 seconds.
b. Check the idle speed.
Idle speed: 700 ± 50 rpm
5. INSPECT IGNITION TIMING
a. Using Special Service Tool (SST), connect terminals TE1 and E1 of the DLC1.
SST 09843-18020
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 DLC1.
SST 09843-18020
6. FURTHER CHECK IGNITION TIMING
Ignition timing: 7 - 24° BTDC @ idle (Transmission in neutral position)
HINT: The timing mark moves in a range between 7° and 24°.
7. DISCONNECT TIMING LIGHT FROM ENGINE
8. DISCONNECT TOYOTA HAND-HELD TESTER OR OBD II SCAN TOOL