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.

1) For CVT model, place select lever in "P" range.

For M/T model, place gear shift lever in "Neutral" position.
2) Apply parking brake.
3) Confirm that ignition mode of keyless push start system is in "OFF" and connect SUZUKI scan tool to DLC (1).
Special Tool

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





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

(A): 09930-76420





10) Check that the ignition timing is at the specified value using the timing chain cover mark (1) and crankshaft pulley notch mark (2).

Initial ignition timing
Fixed with SUZUKI scan tool:

at specified idle speed5 +/- 3� BTDC

Ignition order
1 - 3 - 4 - 2

If ignition timing is out of specification, check the following points.
- CKP sensor Testing and Inspection
- CKP sensor plate Sensor Plate Inspection
- CMP sensor Testing and Inspection
- CMP sensor rotor tooth of intake camshaft





11) Release ignition timing fixation by using SUZUKI scan tool.
12) With engine idling (throttle opening at closed position and vehicle stopped), check that ignition timing is about 6° ± 3° BTDC by using timing light. When the engine speed is increased, check that ignition timing advances.

If even just one of the check results is not satisfactory, check the following points.
- ECM and its circuit Pinout Values and Diagnostic Parameters
- TP sensor Testing and Inspection
- APP sensor Testing and Inspection