Ignition Timing: Testing and Inspection

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.

INSPECTION AND ADJUSTMENT





- When using SUZUKI scan tool, connect SUZUKI scan tool to DLC with ignition switch OFF.
- Start engine and warm it up to normal operating temperature.
- Make sure that all of electrical loads except ignition are switched off.
- Check to be sure that idle speed is within specification.
- Set timing light to No.1 high-tension cord.
- Fix ignition timing to initial one as follows:
When using SUZUKI scan tool:
1. Select "MISC" mode on SUZUKI scan tool and fix ignition timing to initial one.





When not using SUZUKI scan tool:
1. Disconnect scan tool from DLC, and connect test switch and ground terminals of Diag-1 connector by using service wire so that ignition timing is fixed on initial one.
- Open air cleaner upper case and shift upper case and hose position to observe ignition timing.





- Using timing light, check that timing observed from viewpoint is within specification.

Initial ignition timing (Test switch : 5±1° BTDC at idle speed terminal grounded or fixed with SUZUKI scan tool)
Ignition order :1 - 3 - 4 - 2
Special Tool (A): 09900 - 27301 or 09930 - 76420





- If ignition timing is out of specification, loosen flange bolts, adjust timing by turning distributor assembly while engine is running, and then tighten bolts.

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

- After tightening distributor flange bolts, recheck that ignition timing is within specification
- After checking and/or adjusting Initial Ignition Timing, release ignition timing fixation by SUZUKI scan tool or disconnect service wire from Diag-1 connector.
- With engine idling (test switch terminal ungrounded, CTP switch ON and car stopped), check that ignition timing is about 12° BTDC. (Constant variation within a few degrees from 12° indicates no abnormality but proves operation of electronic timing control system.) Also, check that increasing engine speed advances ignition timing. If above check results are not satisfactory, check CTP switch, test switch terminal circuit and ECM.
- Clamp air cleaner upper case securely.