Fuel Injector Inspection

WARNING: As fuel is injected in this inspection, perform in a well ventilated area and away from open flames. Use special care to prevent sparking when connecting and disconnecting test lead to and from battery.

1. Install injector (2) and fuel pressure regulator (3) to special tool (injector checking tool).

NOTE: Remove grommet from injector, then install injector to special tool and tighten bolts by hand.

Special tool
(A): 09912-58421

2. Connect special tools (hoses and attachment) to pipes of vehicle.

Special tool
(B): 09912-58431




3. Connect special tool (test lead) to injector.

Special tool
(C): 09930-88521

4. Install suitable vinyl tube onto injector nozzle to prevent fuel from splashing out when injecting.
5. Put graduated cylinder under injector as shown.
6. Operate fuel pump and apply fuel pressure to injector.
7. If you have SUZUKI scan tool, perform Step a) (Using SUZUKI scan tool). If not, perform Step b) (Not using SUZUKI scan tool).

a. Using SUZUKI scan tool:
i. Connect SUZUKI scan tool to DLC with ignition switch OFF.
ii. Turn ignition switch ON, clear DTC and select MISC TEST" mode on SUZUKI scan tool.
iii. Turn fuel pump ON by using SUZUKI scan tool.

b. Not using SUZUKI scan tool:
i. Remove fuel pump relay from connector (1).
ii. Connect two terminals of relay connector using service wire (2) as shown in the figure.

CAUTION: Check to make sure that connection is made between correct terminals. Wrong connection can cause damage to ECM, wire harness, etc.




iii. Turn ignition switch ON.

8. Apply battery (4) voltage to injector (3) for 15 seconds and measure injected fuel volume with graduated cylinder. Test each injector two or three times.

If not within specification, replace injector.

Injected fuel volume About 60.8 - 73.5 cc/15 sec. (2.05 - 2.4812.14 - 2.59 US/imp.oz/15 sec.)




9. Check fuel leakage from injector nozzle. Do not operate injector (1) for this check (but fuel pump should be at work). If fuel leaks more than the following specifications, replace.

Fuel leakage Less than 1 drop/min.