Ignition Timing: Testing and Inspection

INSPECT IGNITION TIMING
a) Warm up engine.
b) When using intelligent tester.
1) Connect the intelligent tester to the DLC 3.

HINT: Please refer to the intelligent tester operator's manual for further details.

Ignition timing: 8 to 12° BTDC
c) When not using intelligent tester.





1) Using SST, connect terminals 13 (TC) and 4 (CG) of DLC 3.
SST 09843-18040

NOTICE:
^ Be careful 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 V-bank cover.





3) Pull out the wire harness as shown in the illustration. Connect the clip of the timing light to the engine.

NOTICE: Use a timing light which can detect the first signal.

4) Inspect ignition timing at idle.
Ignition timing: 8 to 12° BTDC

NOTICE: When checking the ignition timing, the transmission is in neutral position.

HINT: After engine rpm is kept at 1,000 to 1,300 rpm for 5 seconds, check that it returns idle speed.

5) Disconnect terminals 13 (TC) and 4 (CG) of the DLC3.
6) Inspect ignition timing at idle.
Ignition timing: 7 to 24° BTDC
7) Confirm that ignition timing moves to advanced angle when the engine rpm is increased.
8) Remove the timing light.