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 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. CONNECT TIMING LIGHT TO ENGINE
Connect the tester probe of a timing light to the black-white lead wire of the ignition coil connector for No.1 cylinder.
4. INSPECT IGNITION TIMING
a. Using Special Service Tool (SST), connect terminals TE1 and E1 of the DLC1.
(SST) 09843-18020
HINT: After engine rpm is kept at 1,000 - 1,300 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 DLC1.
SST 09843-18020
5. FURTHER CHECK IGNITION TIMING
Ignition timing: 6 - 15° BTDC @ idle (Transmission in neutral position)
HINT: The timing mark moves in a range between 6° and 15°.
6. DISCONNECT TIMING LIGHT FROM ENGINE
7. DISCONNECT TOYOTA HAND-HELD TESTER OR OBDII SCAN TOOL