Ignition Timing: Testing and Inspection

(1) The vehicle should be prepared as follows before the inspection and adjustment.
- Engine coolant temperature: 80 - 95° C (176 - 203° F)
- Lights, electric cooling fan and accessories: OFF
- Transaxle: neutral (P for A/T)





(2) Insert a paper clip to the noise filter connector, and connect a tachometer to the paper clip.

NOTE: Do not use the scan tool. If tested with the scan tool connected to the data link connector, the ignition timing will not be the basic timing but be ordinary timing.

(3) Set the timing light.
(4) Start the engine and run at idle.
(5) Check curb idle speed.

Standard value: 700 ± 100 r/min

(6) Turn OFF the ignition switch.
(7) Disconnect the water-proof female connector from the ignition timing adjustment connector (brown).





(8) Using a jumper wire, ground the ignition timing adjusting terminal.

NOTE: Grounding this terminal sets the engine to the basic ignition timing.

(9) Start the engine and run at idle
(10) Check basic ignition timing.

Standard value: 5° BTDC ± 3°

(11) If basic ignition timing is not within the standard value, check the crankshaft position sensor.
(12) Turn OFF the ignition switch.
(13) Disconnect the jumper wire connected at step (8).
(14) Check to be sure that the idling ignition timing is the correct timing.

Standard value: Approximately 15° BTDC

NOTE:
(1) Ignition timing is variable within about ± 7° even under normal operating.
(2) And it is automatically further advanced by about 5 from 15° BTDC at higher altitudes.