Ignition Timing: Testing and Inspection

Ignition Timing Inspection

Spark Plug Removal and Installation

NOTE:

- Ignition timing is not adjustable. If ignition timing is out of specification, check ignition system related parts.
- For identification of each cylinder, refer to Precautions for Identification of Cylinder Precautions for Identification of Cylinder.

1) For A/T model, place select lever in "P" and apply parking brake, before starting engine

For M/T model, place gear shift lever in "Neutral" and apply parking brake, before starting engine.
2) Turn OFF ignition switch and connect SUZUKI scan tool to DLC (1).
Special Tool

(A): SUZUKI scan tool (SUZUKI-SDT)





3) Start engine and warm it up to normal operating temperature.
4) Make sure that all electrical loads except ignition are in OFF position.
5) Make sure accelerator pedal is not depressed.
6) Make sure that idle speed is around specification.
7) Fix ignition timing using "Fixed Spark" in "Active Test" mode on SUZUKI scan tool.
8) Set timing light according to the following procedure.
a) Point arrow on sensor of timing light to ignition coil assembly No.1.
b) Clip special tool on "BLK/WHT" wire of ignition coil harness for cylinder No.1.
Special Tool

(A): 09930-76420

Initial ignition timing
Fixed with SUZUKI scan tool:

at specified idle speed5 +/- 3� BTDC

Ignition order
1 - 3 - 4 - 2





9) If ignition timing is out of specification, check the following.
- CKP sensor
- CKP sensor plate
- TP sensor
- CMP sensor
- CMP sensor rotor tooth of intake camshaft
- Vehicle speed signal from ABS / ESP(R) control module
- APP sensor
10) After checking initial ignition timing, release ignition timing fixation by using SUZUKI scan tool.
11) With engine idling (throttle opening at closed position and vehicle stopped), check that ignition timing is about 8° ± 5° BTDC. Also, check that increasing engine speed advances ignition timing.

If the check results are not satisfactory, check CKP sensor and ECM.