Ignition Timing: Testing and Inspection
INSPECTION1. WARM UP ENGINE
Allow the engine to warm up to normal operating temperature.
2. CONNECT TOYOTA HANDHELD TESTER OR OBDII SCAN TOOL
a. Connect a TOYOTA hand-held tester or OBDII scan tool to the DLC3.
b. Please refer to the TOYOTA handheld tester or OBDII 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 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 OBDII SCAN TOOL