Suzuki 2000 Grand Vitara SQ625 Service Manual page 564

1
1. Sound scope
ENGINE AND EMISSION CONTROL SYSTEM (G16 / J20 ENGINES) 6E1-27
FUEL INJECTOR
On-Vehicle Inspection
1) Using sound scope or such, check operating sound of injector
when engine is running or cranking.
Cycle of operating sound should vary according to engine
speed.
If no sound or an unusual sound is heard, check injector circuit
(wire or coupler) or injector.
2) Disconnect coupler from injector, connect ohmmeter between
terminals of injector and check resistance.
Resistance of injector: 13 – 16 W at 20_C, 68 _F
If resistance is out of specification, replace.
3) Connect coupler to injector securely.
Removal
1) Relieve fuel pressure according to procedure described on p.
6-4.
2) Disconnect battery negative cable at battery.
3) Detach intake manifold stiffener (front) from intake manifold (for
G16 engine).
Remove PCV hose and breather hose (for J20 engine).
4) Disconnect coupler from each injector.
5) Remove clamp bolt for fuel feed pipe and return pipe.