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Subaru_Justy_L3-1.2_2wd_Carb_Repair.pdf

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1989 Subaru Justy Hatchback 4WD L3-1.2L SOHC (Carb) Copyright © 2011, ALLDATA 10.40 Page 1 Vehicle: Initial Inspection and Diagnostic Overview Meter Types 1. Use a digital or analog multimeter with a minimum 10k ohm resistance. 2. Remove the blown fuse and disconnect all loads for that circuit. Finding A Short Circuit 3. Connect a test lamp in place of the fuse. 4. Establish conditions that turn the test lamp on. EXAMPLE a) Ignition SW ON Subaru Justy Hatchback 2WD L3-1.2L SOH
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  Vehicle: Initial Inspection and Diagnostic Overview Meter Types 1.Use a digital or analog multimeter with a minimum 10k ohm resistance.2.Remove the blown fuse and disconnect all loads for that circuit. Finding A Short Circuit 3.Connect a test lamp in place of the fuse..Establish conditions that turn the test lamp on.EXAMPLEa) Ignition SW ON Subaru Justy Hatchback 2WD L3-1.2L SOHC (Carb)1   b) Ignition SW ON and SW 1 ONc) Ignition SW, SW 1 and Relay ON (connect the relay)5.Connect and disconnect the components or connectors in the circuit while watching the test light.a) The test light will come on when the shorted circuit or component is connected.  b) The test light will go off when the circuit or component is disconnected Subaru Justy Hatchback 2WD L3-1.2L SOHC (Carb)2  Vehicle: Component Tests and General DiagnosticsContinuity and Resistance Check Meter Types 1.Use a digital or analog multimeter with a minimum 10k ohm resistance.2.Disconnect the battery or connector so there is no power between the check points.3.Set the ohmmeter to the appropriate range. Continuity And Resistance Check 4.Connect the two leads of the meter to each of the check points. Diode Check 5.If the circuit or component has diodes, reverse the leads and check again.a.When contacting the negative lead to the diode's positive side and the positive lead to the negative side, there should be continuity. b.When connecting the two leads in reverse, there should not be continuity. Voltage Check Subaru Justy Hatchback 2WD L3-1.2L SOHC (Carb)3  Meter Types 1.Use a digital or analog multimeter with a minimum 10k ohm resistance. Voltage Check 2.Establish conditions in which voltage should be present at the check point.EXAMPLE:a) Ignition SW ON b) Ignition SW and SW 1 ONc) Ignition SW, SW1 and Relay ON (SW 2 OFF)3.Set the volt meter set to the appropriate range for the circuit being tested.4.Connect the negative lead to a good ground point or the negative battery terminal, and connect the positive lead to the connector or component terminal. NOTE:  This test can be done with a test light if the circuit does not include sensitive electrical components, i.e. electrical control units. Subaru Justy Hatchback 2WD L3-1.2L SOHC (Carb)4
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