Suzuki 2000 Grand Vitara SQ625 Service Manual page 656

6F2-8 IGNITION SYSTEM (FOR J20 / H25 ENGINES)
1
J20 Engine
3
H25 Engine
1
3
9) After checking and/or adjusting, end fixed spark mode of SU-
2
10) With engine idling (closed throttle position and vehicle
1. Viewpoint
2. Timing mark on
chain cover
3. Timing mark on
crankshaft pulley
ZUKI scan tool or disconnect service wire from monitor cou-
pler.
CAUTION:
Driving with test switch terminal grounded will cause
damage to catalyst.
Be sure to disconnect service wire after adjustment.
NOTE:
In this state, ignition timing may vary more or less of initial
ignition timing but it is nothing abnormal.
stopped), check that ignition timing is about BTDC 12_ – 16_
(J20 engine), 10_ –13_ ( H25 engine with monitor connector),
6_ – 12_ (H25 engine without monitor connector) (shown in the
figure). Also, check that increasing engine speed advances
ignition timing.
If above check results are not satisfactory, check input signals
related to this system.