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 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
Connect the tester probe of a timing light to the black-red service wire in the J/B No. 1 as shown in the illustration.
5. INSPECT IGNITION TIMING
a. Using SST, connect terminals to 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
c. Remove the SST from the DLC3.
6. FURTHER CHECK IGNITION TIMING
Ignition timing: 6 - 15° BTDC at idle
HINT: The timing mark moves in a range between 6° and 15°.
7. DISCONNECT TIMING LIGHT
8. DISCONNECT TOYOTA HAND-HELD TESTER OR OBDII SCAN TOOL