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1、精选优质文档-倾情为你奉上第三章、Service ToolsThe Service Tools Menu lists menus that contain system-related tests that allow you to test specific vehicle systems.Many Service Tools Tests begin with a live screen allowing you to visually check the system without running the diagnostic routine. The live screen allow
2、s you to adjust the vehicle and see the effects of changes as you make them.Battery/Starting/Charging Menu - Contains tests for the electrical system.Fuel System Menu - Provides emission tests for carbureted and fuel-injected vehicles.Ignition Test Menu - Provides diagnostic tools for checking the p
3、rimary, secondary and timing systems on a vehicle.Cylinder Power Menu - Provides a cylinder speed and contribution tests.Multi-Analyzer Menu - Provides multi-meters, pattern scopes and recording scopes for digital and or analog waveform analysis.第一节、Hot KeysF6-Help-Displays help screens.F7 -Trigger
4、Lead StatusDisplays Trigger Lead Status screen.F8 -Kill - Stops the engine.F9 -Clear- Clears data fields and displays,Fl0 - Previous Menu -Aborts the test in progress and returns to the previous menu or proceeds to the next test in a user test,Fll - Form Feed - Form feeds paper from the printer.F12
5、- Print Reports- Displays the Print Repods menu.Print Screen - Prints a screen dump - an exact copy of what appears on the screen.第二节、Battery/Charging / Starting Menu一、Battery TestOverviewThis routine is designed to test and report on the condition of any 12-volt automotive battery. The test reports
6、 the following data:l Available CCA- (Cold Cranking Amps) from the battery.l Open Circuit Voltage - measured at the battery positive and negative terminals.l Load Voltage - measured at the battery positive and negative terminals while a load is placed on the battery.l Recovery voltage - measured at
7、the positive and negative terminals during a period of time after the load is removed from the battery.Required Lead Hookup:Battery Load Leads on battery terminals.Recommended Lead Hookup:Connect all leads per Figure 1-26.Test Procedure1. Follow the screen prompt and type in the battery CCA rating.
8、If you are not sure of the batterys rating, enter the numbers per the chart below. No. of Cylinders CCA 4 400 6 500 8 575Type in the CCA rating and press ENTER. To change the battery rating units, press F5. The Battery Rating Units screen will appear. Type the number which matches the rating units y
9、ou will use. The available units are:l CCA - Cold Cranking Ampsl DIN - German Institute for Standardization unitsl IEC - International Electrotechnical Com mission unitsl A-HR - Amp-Hours2. The test will run and the results screen will appear (see Figure 3-1).Results in green are within specificatio
10、n. Resuits in yellow are marginal - no diagnostics are available. Results in red are above or below acceptable established limits. Results in white have no diagnostics available because Vehicle Specifications were not entered.Press:F2 to display the diagnostic messages;F4 to run the test again;Fl0 t
11、o return to the Service Tools MenuF12 to display the Print Reports menu.二、Charging TestOverviewThe charging test allows you to measure the alternator output under a load condition. This test also provides you the tools necessary to check the diode condition.Conventional Ignitions Required Lead Hooku
12、p:l Green #1 Leadl Coil Positive Lead (Yellow)l Coil Negative Lead (Blue)l System Ground Lead (White)l Positive and Negative Battery Load Leadsl Vacuum/Pressure Transducerl Amp Probe Recommended Lead Hookup: Complete hookup per Figure 1-26.Direct Ignition Systems (DIS)Required Lead Hookup:l Green #1
13、 Leadl System Ground Lead (White)l Positive and Negative Battery Load Leadsl Vacuum/Pressure Transducerl Secondary DIS High Tension Adaptersl Low Current Probel Amp Probe CAUTION: Place the transmission in PARK or, if manual, NEUTRAL. Set the parking brake. Make sure the vehicle cannot roll. If nece
14、ssary, chock the wheels.Charging Live ScreenThe Charging Live screen (see Figure 3-2) appears when this test is selected. Use this screen to make sure that all leads and vehicle components are working correctly. If the AMP digital meter shows a high or negative reading, zero the amp probe.Press:Fl t
15、o zero the amp probe;F2 to run the diagnostic routine;F3 to update the diode pattern which appears on the screen;F4 to place a load on the battery;F5 to toggle the scales on the data display between a high and low scale.NOTE: F2 and F4 are not available keys until battery recovers from load applied
16、to it. When timer reaches zero the keys will appear.NOTE: If necessary to zero the amp probe, make sure the probe is clamped around ALL negative battery leads when you replace it! Check the arrow on the clamp carefully! Probe is clamped correctly around negative terminal wires when probe arrow point
17、s toward battery.Diagnostic Test Procedure1. From the Live screen, press F2. Follow the screen prompt and run the engine at 2000 RPM. The green line on the graph represents voltage. The gray line represents alternator amps.NOTE: If the alternator amps are over 20, a timer will appear on the screen.
18、The test may then take up to thirty seconds to complete.The analyzer will then place a load on the battery and then allow the battery to stabilize.2. Follow the next screen prompt and run the engine at idle. The analyzer will then apply a load to the battery.The diode pattern will appear on the scre
19、en (see Figure 3-3).Press:F2 to display the Results screen;F3 to display the Charging Live screen;F4 to repeat the test.Results ScreenWhen you press IF2 the Results screen appears (see Figure 3-4).The gray bars represent the actual readings. The yellow bars on the Regulator graph represent marginal
20、readings. For acceptable results, the gray bar should appear well inside the green area on both graphs. The digital readings shown below the graphs will also indicate whether the resuits are acceptable. Readings outside specified limits will appear in red.The analyzer then prompts you to judge the d
21、iode pattern. Refer to Figure 3-5.Press:Fl to indicate tile diode pattern is good;F3 to indicate tile diode pattern is bad;F5 to indicate the diode pattern is flat.A good pattern will show regular, even waves, with some variation acceptable. A bad pattern has uneven or irregularly shaped waves. A fl
22、at pattern indicates the alternator is not working at all.After you indicate the pattern condition, press:F2 to display the diagnostic messages;F10 to return to the Service Tools Menu;F12 to print the test report.三、Cranking TestConventional IgnitionsCAUTION: Place the transmission in PARK or, if man
23、ual, NEUTRAL. Set the parking brake.Make sure the vehicle cannot roll. If necessary, chock the wheels. Required Lead Hookup:u Green #1 Leadu Coil Positive Lead (Yellow)u Coil Negative Lead (Blue)u System Ground Lead (White)u Positive and Negative Battery Load Leadsu Vacuum/Pressure Transduceru Amp P
24、robe Recommended Lead Hookup: Connect all leads per Figure 1-26.Cranking Live ScreenThe Cranking Live screen appears (see Figure3-6) when the test is selected. Use this screen to make sure that all leads and vehicle components are working correctly. If the AMP digital meter shows a high or negative
25、reading, zero the amp probe.Press:F1 to zero the amp probe;F2 to run the diagnostic routine;IF3 to toggle the ranges of the data displayed between high and Iow scales;F4 default is to ON, which kills the ignition system (conventional ignitions only), press to remove inhibit and allow engine to start
26、;F5 to freeze screen information.Diagnostic Procedure1. If the engine is running when you press F2, the analyzer will kill the engine. Follow the screen prompt (see Figure 3-7) and crank the engine until it starts.Press:F2 to display Diagnostic Messages, after the engine starts;F3 to display the Cra
27、nking Live screen;F4 to repeat the test.Direct Ignition Systems (DIS)CAUTION: Place transmission in PARK or, if manual, NEUTRAL. Set parking brake. Make sure vehicle cannot roll. If necessary, chock the wheels. Required Lead Hookup:u Green #1 Leadu System Ground Lead (White)u Positive and Negative B
28、attery Load Leadsu Vacuum/Pressure Transduceru Secondary DIS High Tension Adaptersu Low Current Probeu Amp ProbeFollow the screen prompt and disable the fuel system as described below. Then crank the engine until it starts and press IF2 to access Diagnostics.PFI (Ported Fuel Injection) Vehicles:1. T
29、urn the ignition key ON.2. After the ignition key is ON, press the accelerator pedal all the way down. This will cause the computer on these vehicles to inhibit fuel flow because it is put in a Clear Flood mode.3. Hold the accelerator pedal all the way down and crank the engine until the prompt ENAB
30、LE FUEL SYSTEM - START ENGINE appears. The analyzer then displays the results on the screen. Release the accelerator pedal and continue cranking to allow the engine to start.NOTE: If the engine starts before the Re-enable Fuel prompt appears, release the accelerator pedal, turn the ignition OFF and
31、repeat the test.For GM TBI (Throttle Body injection) Vehicles: 1. Remove the injector cable at the injector. These vehicles are not automatically disabled when the throttle is wide open. Remove the rubber or plastic airflow filter over the injector, and then unplug the cable connector at the injecto
32、r.2. Crank the engine until prompted to re-enable the fuel system. When the test results appear on the screen, stop cranking.3. Follow the screen prompt and re-connect the injector and start the engine.For Ford, Chrysler / Mitsubishi, and Other Systems:1. Disable the fuel system. Check the manufactu
33、rers specifications for the correct procedure. 2. Crank the engine until prompted to enable the fuel system. Discontinue cranking when results appear on screen. Re-enable the fuel system, and start the engine.Ported Fuel Injection (PFI) with Clear Flood Mode, and Sequential Fuel Injection (SEFI) wit
34、h Clear Flood Mode1. Turn the ignition key to the RUN Position.2. Depress the Accelerator all the way to WIDE OPEN THROTTLE.3. Begin cranking the engine until prompted to enable fuel system.4. Release the Accelerator and continue cranking until the engine starts.CAUTION: If the engine starts during
35、Step3, immediately release the accelerator pedal and re-run the test.Ported Fuel Injection (PFI) without Clear Flood Mode, and Sequential Fuel Injection (SEFI) without Clear Flood Mode1. Disconnect Fuel Pump Relay or Inertia Switch.2. Run the engine until all fuel is exhausted from the fuel system.3
36、. Follow the screen prompts.Throttle Body Injection (FBI) and Central Fuel Injection (CFI) 1. Disconnect the fuel injector connector(s) at the fuel injector. 2. Run the engine until all fuel is exhausted from the fuel system. 3. Follow the screen prompts.Disabling Fuel Systems Carburetor Carburetor
37、with Electric Fuel Pump 1. Disconnect fuel pump relay or wiring connector to fuel pump.2. Run the engine until all fuel is exhausted from the carburetor bowl.3. Follow the screen prompts.Carburetor with Mechanical Fuel Pump1. Crimp rubber fuel inlet hose with hose pliers.2. Run the engine until all
38、fuel is exhausted from the carburetor bowl.3. Follow the screen prompts.Carburetor with Decel Valve1. Disconnect decel valve per manufacturers recommendations.2. Run the engine until all fuel is exhausted from the carburetor bowl.3. Follow the screen prompts.四、Drain TestUse the Drain Test to determi
39、ne the current drain cause by any vehicle component. Use the Low Current Probe to detect a current drain. For best results, do not connect the Low Current Probe around the battery leads.Required Leads:System Ground (White)Low Current ProbeTest Procedure1. Select the test from the menu. The Drain Tes
40、t screen appears (see Figure 3-8).2. Press Fl and follow the screen prompts to zero the Low Current Probe.3. Set up the test.Press:Fl to zero the Low current probe;F3 to toggle the meter scale on the display screen between 0-1 amp and 0-10 amps;F5 to freeze the meter display, so that you can study t
41、he pattern more closely.The Arrow Keys to change the audible alarm level.4. Clamp the Low Current Probe around the wire in the circuit that you want to test. Make sure that the probe is completely closed.5. Make sure the remote is nearby. Press the Up or Down Arrow Keys to set the audible alarm limi
42、ts. The light gray line in the meter on the display screen will move up or down as you press the Arrow Keys.6. The meter displays amps over time. As the analyzer detects a current drain, it will draw the pattern on the screen. If the drain moves above the alarm level which you have set, the remote w
43、ill beep.NOTE: For most accurate results, zero the amp probe often during extended testing.第三节、Fuel System MenuMenu ChoicesSelecting the Fuel system menu allows you to display a menu of two tests. The Four Gas Exhaust Test displays exhaust gas readings for the vehicle at both idle and cruise RPM.The
44、 Fuel Injection Test displays exhaust gas readings as well as electrical and fuel pressure data for fuel injected systems.Four Gas Exhaust TestConventional IgnitionsRequired Lead Hookup:l Green #1 Leadl System Ground Lead (White)l Exhaust Gas Analyzer Leadl Secondary Lead and Adapterl Exhaust ProbeR
45、ecommended Lead Hookup:Connect all leads per Figure 1-26.Direct Ignition Systems:Required Lead Hookup:l Green #1 Leadl System Ground Lead (White)l Positive and Negative Battery Load Leadsl Vacuum/Pressure Transducerl Secondary DIS High Tension Adaptersl Low Current Probel Amp Probel Exhaust ProbeLiv
46、e ScreenThe live screen (see Figure 3-10) will appear whenever the test is selected. The default analog meters (RPM and Vacuum) will always appear. Use the Arrow Keys to highlight either meter. Press the number of any highlighted digital meter to display that meter in the highlighted meter. Digital
47、meters colored in gray are not available either because the leads are not connected or they are already displayed. Digital meters will be gray during bench warm-ups.Press:Fl to turn the trace function ON or OFF;F2 to run the diagnostic test;F3 to toggle meter zero center function ON or OFF.Diagnostic Procedure1. Start the engine, if necessary. Follow the screen prompts and run the engine at cruise RPM. Watch the RPM box - red numbers i