Ignition Timing: Testing and Inspection
INSPECT IGNITION TIMINGa. Warm up engine.
b. When using intelligent tester or OBD II scan tool
1 Connect the intelligent tester or OBD II scan tool to the DLC3.
2 Enter DATA LIST MODE on the intelligent tester or OBD II scan tool.
Ignition timing: 8 to 12° BTDC
HINT: Please refer to the intelligent tester or OBD II scan tool operator's manual if you need help to select DATA LIST.
c. When not using the intelligent tester or OBD II scan tool:
1 Using SST, connect terminals 13 (TC) and 4 (CG) of DLC3.
SST 09843-18040
NOTICE:
^ Make sure of the terminal numbers before connecting them. Connection with a wrong terminal can damage the engine.
^ Turn OFF all electrical systems before connecting the terminals.
^ Perform this inspection after the cooling fan motor is turned OFF.
2 Remove the V-bank cover.
3 Pull out the black-colored wire harness as shown in the illustration.
4 Connect the tester terminal of the timing light to the engine.
NOTICE: Use a timing light which detects the first signal.
5 Inspect ignition timing at idle.
Ignition timing: 8 to 12° BTDC
NOTICE: When checking the ignition timing, the transmission is in the neutral position.
HINT: Run the engine at 1,000 to 1,300 rpm for 5 seconds, check that the engine rpm returns idle speed.
6 Disconnect terminals 13 (TC) and 4 (CG) of the DLC3.
7 Inspect ignition timing at idle.
Ignition timing: 7 to 24° BTDC
8 Confirm that the ignition timing advances when the engine rpm is increased.
9 Remove the timing light.