![](../../../img/13/AK300696AC00ENG.png)
|
1.Use a stethoscope to
listen to the operation sound (clicking) of the injectors
while the engine is idling or cranking. 2.Verify
that the operation sound increases with the engine
speed.
note |
If the operating sound cannot
be heard, inspect the injector actuation
circuit.
|
|
|
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.
|
|
4.Connect the injector
connector.
|
|
1.Following the steps below,
bleed out the residual pressure within the fuel pipe line to
prevent flow of the fuel (Refer to ).
|
![](../../../img/13/AK301464AC00ENG.png)
|
3.Assemble the following
special tools as shown in Fig.
- Injector test set (MD998706)
- Injector test harness (MB991607)
- Injector test adaptor (MD998741)
- Injector test holder assembly (MB991976)
4.Connect the M.U.T.-III to the diagnosis
connector. 5.Turn the ignition switch to ON
position (But do not start the engine). 6.Select
"Item No. 07" from the M.U.T.-III actuator test to drive the
fuel pump.
|
![](../../../img/13/AK301465AC00ENG.png)
|
7.Activate the injector and
check the atomized spray condition of the fuel. The
condition can be considered satisfactory unless it is
extremely poor. 8.Stop the actuation of the
injector, and check for leakage from the injector
nozzle. Standard value: 1 drop or less per
minute 9.Without the fuel pump operation,
operate the injector to draw the fuel out. 10.If
the spraying is extremely poor or the fuel leakage from the
injector nozzle deviates from the standard value, replace
the injector. 11.Disconnect the
M.U.T.-III.
|