Ignition Timing: Testing and Inspection
INSPECT IGNITION TIMINGa. Warm up the engine and stop the engine.
NOTICE: A warmed up engine should have an engine coolant temperature of over 80°C (176°F), have an engine oil temperature of 60°C (140°F), and the engine rpm should be stabilized.
b. When using the intelligent tester:
1. Connect the intelligent tester to the DLC3.
2. Start the engine and idle it.
3. Push the intelligent tester main switch ON.
4. Enter these items: Powertrain/Engine and ECT/Data list/IGN Advance.
Ignition timing: 5 to 15° BTDC at idle
HINT: Refer to the intelligent tester operator's manual for further details.
c. When not using the intelligent tester:
1. Remove the V-bank cover sub-assembly.
2. Connect the tester probe of a timing light to the wire of the ignition connector for No. 1 cylinder.
NOTICE: Use a timing light which can detect the primary current.
3. Using SST, connect terminals TC and CG of the DLC3.
SST 09843-18040
NOTICE:
^ Confirm the terminal numbers before connecting them. Connecting the wrong terminals can damage the engine.
^ When checking the ignition timing, the transmission should be in neutral.
4. Using a timing light, check the ignition timing.
Ignition timing: 8 to 12° BTDC at idle
5. Remove the SST from the DLC3.
6. Check the ignition timing.
Ignition timing: 5 to 15° BTDC at idle
7. Check that the ignition timing advances immediately when the engine speed is increased.
8. Disconnect the timing light from the engine.
9. Install the V-bank cover sub-assembly.