Ignition Timing Inspection

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 referring to IDLE SPEED AND IAC THROTTLE VALVE OPENING INSPECTION .
4. Connect SUZUKI scan tool to DLC (1) with ignition switch OFF, restart engine and fix ignition timing by using fixed spark mode of SUZUKI scan tool.

   Special Tool 

   1. SUZUKI scan tool 
      Fig 1: Connecting SUZUKI Scan Tool To DLC

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

   Initial ignition timing of viewpoint (when it is fixed by SUZUKI scan tool) 

   5 ± 1° BTDC 

   Ignition order 

   1-6-5-4-3-2 

   Special Tool 

   1. 09930-76420 
   Fig 2: Checking Ignition Timing

   
7. If ignition timing is out of specification, check the followings.
   • CKP sensor
   • CKP sensor plate
   • TP sensor
   • CMP sensor
   • CMP sensor rotor tooth of camshaft
   • Wheel speed sensor (VSS)
   • Timing chain cover installation
8. After checking initial ignition timing, release ignition timing fixation by using scan tool.
9. With engine idling (throttle opening at closed position and vehicle stopped), check that ignition timing is about 10°-16° BTDC. (Constant variation within a few degrees from 10°-156° BTDC indicates no abnormality but proves operation of electronic timing control system.) Also, check that increasing engine speed advances ignition timing.

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