CHECK THE OPERATION SOUND |
MEASUREMENT OF RESISTANCE BETWEEN TERMINALS |
1.Disconnect the injector connector. |
2.Measure the resistance between terminals. Standard value: 10.5 - 13.5 Ω (at 20°C) |
3.If the resistance is deviates from the standard value, replace the injector. |
CHECK THE INJECTION CONDITION |
1.Release the residual pressure in the fuel pipe line to prevent the fuel from running out (Refer to ). |
2.
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3.Remove the injector. |
4.Assemble the special tool called injector test set (MB992076) as shown in the figure according to the following procedure.
6.Connect the M.U.T.-III to the diagnosis connector. 7.Turn the ignition switch to the ON position. (But do not start the engine.) 8.Select "Item No. 9" of the M.U.T.-III actuator test to drive the fuel pump. |
9.Connect the special tool Injector test harness (MB991607) between the injector and battery to drive the injector. 10.Check each injector for spray conditions. The condition can be considered satisfactory unless it is extremely poor. 11.Stop the actuation of the injector, and check for leakage from the injector nozzle. Standard value: 1 drop or less per minute 12.After turning the ignition switch to the "LOCK" (OFF) position, remove the M.U.T.-III. 13.Actuate the injector until it does not spray fuel any longer, then drain the fuel inside the special tool. 14.Remove the special tool. 15.When the spray condition is extremely poor or any fuel leaks from the injector nozzle, replace the injector. 16.Replace the injector and fuel high-pressure hose in the original places. |