Ignition Timing: Adjustments

NOTE:
Before starting engine, place transmission gear shift lever in "Neutral" (shift selector lever to "P" range for A/T model), and set parking brake.

1) Start engine and warm it up to normal operating temperature.
2) Make sure that all of electrical loads except ignition are switched off.
3) Check to be sure that idle speed is within specification.

Idle speed: 800 ± 50 rpm





4) Connect SUZUKI scan tool to DLC with ignition switch OFF, restart engine and fix ignition timing by using "FIXED SPARK" mode of SUZUKI scan tool.

[Not using SUZUKI scan tool]
Remove monitor coupler cap.
Ground initial test terminal in monitor coupler by using service wire so that ignition timing is fixed on initial one.





5) Set timing light to No. 1 ignition harness.
6) Using timing light, check that timing observed from viewpoint is within specification.

Initial ignition timing of viewpoint (Test switch terminal grounded): 5 ± 1° BTDC (at idle speed)

Ignition order: 1-3-4-2

Special Tool
(A): 09930-76420





7) If ignition timing is out of specification, loosen flange bolts, adjust timing by turning CMP sensor while engine is running, and then tighten bolts.

Tightening Torque
(a): 15 Nm (1.5 kg-m, 11.0 lb-ft)

8) After tightening bolts, recheck that ignition timing is within specification.
9) After checking and/or adjusting, disconnect service wire from monitor coupler.

CAUTION:
Driving with test switch terminal grounded will cause damage to catalyst. Be sure to disconnect service wire after adjustment.

NOTE:
In this state, ignition timing may vary more or less of initial ignition timing but it is nothing abnormal.

10) With engine idling (test switch terminal ungrounded, idle switch ON and vehicle stopped), check that ignition timing is about 80 BTDC.
Also, check that increasing engine speed advances ignition timing.
If above check results are not satisfactory, check TP sensor , test switch terminal circuit and ECM.