Suzuki Engine 2002 GRAND VITARA SQ420 Service Manual page 767

6F2-8 IGNITION SYSTEM (FOR J20/H25 ENGINES)
1
4) [Using SUZUKI scan tool]
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.
(A)
Special tool
(A) : SUZUKI scan tool
[Not using SUZUKI scan tool]
• Ground test switch terminal (2) in diagnosis coupler (1) by
using service wire so that ignition timing is fixed on initial
one.
5) Set timing light to ignition harness for No.1 cylinder.
6) Using timing light, check that timing observed from viewpoint
(1) is within specification.
Initial ignition timing of viewpoint
(when it is fixed by SUZUKI scan tool or service wire) :
5 ± 1° BTDC
Ignition order :
1-3-4-2 (J20 engine)
1-6-5-4-3-2 (H25 engine)
Special tool
(A) : 09930-76420
[A] : J20 Engine
[B] : H25 Engine
2. Timing mark on chain cover
3. Timing mark on crankshaft pulley