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Looking carefully at the scan tool data is very helpful in locating the source of a problem.
Views: 353
Filesize: 87.66kB
Date: Jun 1, 2017
 After checking for stored diagnostic trouble codes (DTCs), the wise technician checks service ...
Views: 334
Filesize: 1.42MB
Date: Jun 1, 2017
 Step 3 in the diagnostic process is to retrieve any stored diagnostic trouble codes.
Views: 348
Filesize: 134.58kB
Date: Jun 1, 2017
 A spark tester connected to a spark plug wire or coil output. A typical spark tester will fire only ...
Views: 329
Filesize: 37.21kB
Date: Jun 1, 2017
Using a bright light makes seeing where the smoke is coming from easier. In this case, smoke was ...
Views: 395
Filesize: 1.38MB
Date: Jun 1, 2017
 This is what was found when removing an air filter from a vehicle that had a lack-of-power concern. ...
Views: 322
Filesize: 1.28MB
Date: Jun 1, 2017
 A form that the customer should fill out if there is a driveablilty concern to help the service ...
Views: 324
Filesize: 329.37kB
Date: Jun 1, 2017
 Step 1 is to verify the customer concern or problem. If the problem cannot be verified, then the ...
Views: 359
Filesize: 119.45kB
Date: Jun 1, 2017
A funnel is one way to visualize the diagnostic process. The purpose is to narrow the possible ...
Views: 352
Filesize: 87.54kB
Date: Jun 1, 2017
 The fuel level must be above 15% and below 85% before the EVAP monitor will run on most vehicles.
Views: 323
Filesize: 1.39MB
Date: Jun 1, 2017
 This Toyota cap has a warning—the check engine light will come on if not tightened until one ...
Views: 320
Filesize: 1.71MB
Date: Jun 1, 2017
 The fuel tank pressure sensor (black unit with three wires) looks like a MAP sensor and is usually ...
Views: 279
Filesize: 1.48MB
Date: Jun 1, 2017
An emission tester that uses nitrogen to pressurize the fuel system.
Views: 257
Filesize: 2MB
Date: Jun 1, 2017
 This unit is applying smoke to the fuel tank through an adapter and the leak was easily found to be ...
Views: 322
Filesize: 1.62MB
Date: Jun 1, 2017
 To test for a leak, this tester was set to the 0.020 inch hole and turned on. The ball rose in the ...
Views: 295
Filesize: 962.5kB
Date: Jun 1, 2017
 Some vehicles will display a message if an evaporative control system leak is detected that could ...
Views: 319
Filesize: 993.97kB
Date: Jun 1, 2017
A leak detection pump (LDP) used on some Chrysler vehicles to pressurize (slightly) the fuel ...
Views: 287
Filesize: 130.41kB
Date: Jun 1, 2017
 A typical evaporative emission control system. Note that when the computer turns on the canister ...
Views: 346
Filesize: 129.37kB
Date: Jun 1, 2017
 The evaporative emission control system includes all of the lines, hoses, and valves, plus the ...
Views: 310
Filesize: 83.76kB
Date: Jun 1, 2017
 A charcoal canister can be located under the hood or underneath the vehicle.
Views: 331
Filesize: 1.51MB
Date: Jun 1, 2017
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