Ignition Timing: Testing and Inspection

INSPECT IGNITION TIMING
(a) When using a intelligent tester:
(1) Connect the intelligent tester to the DLC3.
(2) Turn the ignition switch to ON.
(3) Turn the intelligent tester ON.
(4) Start the engine and warm it up.
(5) Select the following menu items:
DIAGNOSIS / ENHANCED OBDII / DATA LIST / PRIMARY / IGN ADVANCE.
Ignition timing: 3 to 7° BTDC (during idling)

NOTICE: Turn all electrical systems OFF.

HINT: Refer to the intelligent tester operator's manual for further information regarding the selection of DATA LIST.

(6) Check that the ignition timing advances immediately when engine speed is increased.
(b) When not using a intelligent tester:
(1) Turn the ignition switch to ON.
(2) Start the engine and warm it up.





(3) Install the tester terminal of a timing light in the position shown in the illustration.

NOTICE:
^ Use a timing light that detects the first signal.
^ After checking, be sure to wrap the wire harness with tape.





(4) Using SST, connect terminals 13 (TC) and 4 (CG) of the DLC3.
SST 09843-18040

NOTICE: Be careful not to connect the wrong terminals. It may damage the engine.

(5) Check that the ignition timing is within the specification.
Ignition timing: 3 to 7° BTDC (during idling)

NOTICE: Turn all electrical systems OFF.