Ignition Timing: Testing and Inspection
INSPECT IGNITION TIMINGa. Warm up the engine.
b. When using the handheld tester or OBD II scan tool:
1. Connect the handheld tester or OBD II scan tool to the DLC-3.
2. Enter DATA LIST MODE on the handheld tester or OBD II scan tool.
Ignition timing: 8 to 12° BTDC
HINT: Please refer to the handheld tester operator's manual if you need help to select DATA LIST.
c. When not using the handheld tester or OBD II scan tool:
1. Using SST, connect terminals 13 (TC) and 4 (CG) of DLC-3.
SST 09843-18040
NOTICE:
^ Make sure of the terminal numbers before connecting them. Connection with a wrong terminal could 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 cylinder head cover No.2.
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 to 12° BTDC
NOTICE: When checking the ignition timing, shift the transmission to the park or neutral position.
HINT: Run the engine at 1,000 to 1,300 rpm for 5 seconds, and check that it the engine rpm returns to idle speed.
6. Disconnect terminals 13 (TC) and 4 (CG) of the DLC-3.
7. Inspect ignition timing at idle.
Ignition timing: 0 to 14° BTDC
8. Confirm that ignition timing advances when the engine rpm is increased.
9. Remove the timing light.