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) Select these menu items: DIAGNOSIS/ENHANCED OBD II/DATA LIST/PRIMARY/IGN ADVANCE.
Standard ignition timing: 8 to 12° BTDC @ idle
HINT: Please refer to the intelligent tester operator's manual for further details.
c. When not using the intelligent tester:
(1) Remove the V-bank cover.
(2) Connect the tester terminal of a timing light to the red lead wire as shown in the illustration.
HINT: Use a timing light that detects primary signals.
(3) Using SST, connect terminals 13 (TC) and 4 (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 the neutral position.
(4) Using a timing light, check the ignition timing.
Standard ignition timing: 8 to 12° BTDC @ idle
NOTICE: When checking the ignition timing, the transmission should be in the neutral position.
HINT: Run the engine at 1,000 to 1,300 rpm for 5 seconds, and then check that the engine rpm returns to idle speed.
(5) Remove the SST from the DLC3.
(6) Check the ignition timing.
Standard ignition timing: 5 to 15° BTDC @ 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.