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1、BEAR400汽车发动机综合分析仪实训手册第三章、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 scre
2、en allows 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 checki
3、ng the primary, 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 -
4、Trigger 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 prin
5、ter.F12 - 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
6、 reports 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 - meas
7、ured at 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
8、rating. 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
9、 units you 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 spec
10、ification. 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 aga
11、in;Fl0 to 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 Le
12、ad Hookup: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
13、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 Probe CAUTION: Place the transmission in PARK or, if manual, NEUTRAL. Set the parking brake. Make sure the vehicle cannot roll.
14、 If necessary, 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.Pr
15、ess:Fl to 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 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 wh
