Ignition Timing: Testing and Inspection
INSPECT IGNITION TIMINGa. Warm up engine.
b. When using hand-held tester or OBDII scan tool.
1 Connect the hand-held tester or OBDII scan tool to the DLC3.
HINT: Please refer to the hand-held tester or OBDII scan tool operator's manual for further details.
c. When not using hand-held tester or OBDII scan tool.
1 Using SST, connect terminal 13 (TC) and 4 (CG) of the DLC3.
SST 09843-18040
NOTICE:
^ Be sure not to connect incorrectly. It causes breakage of the engine.
^ Turn OFF all electrical systems.
^ Operate the inspection when the cooling fan motor is turned OFF
2 Remove the 2 nuts, 2 clips and cylinder head cover.
3 Pull out the wire harness as shown in the illustration.
4 Connect the clip of the timing light to the engine.
NOTICE:
^ Use a timing light which can detect the first signal.
^ After checking, be sure to tape the wire harness.
5 Inspect ignition timing at idle.
Ignition timing: 8 - 12° BTDC
NOTICE: When checking the ignition timing, the transmission is at neutral position.
HINT: After engine rpm is kept at 1,000 - 1,300 rpm for 5 seconds, check that it returns idle speed.
6 Disconnect the terminal 13 (TC) and 4 (CG) of the DLC3.
7 Inspect ignition timing at idle.
Ignition timing: 10 - 18° BTDC
8 Confirm that ignition timing moves to advanced angle side when the engine rpm is increased.
9 Remove the timing light.
10 Install cylinder head cover No. 2 with the 2 nuts and 2 clips.
Torque: 7.0 Nm (71 kgf-cm, 62 inch lbs.)