Launch CRT 501 Series - Read Live Data; Read Freeze Frame; Read Fault Code; Clear Fault Code

LAUNCH CRT 501 Series User Manual
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repair of a car fault has been performed correctly.
6.2.2 Read Live Data
This function retrieves and displays live data and parameters from the
vehicle’s ECU.
6.2.3 Read Freeze Frame
This function takes the snapshot of the operating conditions when an
emission-related fault occurs.
6.2.4 Read Fault Code
This function can identify which section of the emission control system has
malfunctioned.
Note: Retrieving and using DTCs for troubleshooting vehicle operation is only
one part of an overall diagnostic strategy. Never replace a part based only on the
DTC definition. Each DTC has a set of testing procedures, instructions and flow
charts that must be followed to conrm the location of the problem. This information
can be found in the vehicle’s service manual.
6.2.5 Clear Fault Code
This function erases the codes from the vehicle, after retrieving codes from the
vehicle and certain repairs have been carried out.
Make sure the vehicle’s ignition key is in the ON position with the engine o󰀨
before the operation.
Notes:
1. If you plan to take the vehicle to a Service Center for repair, DO NOT erase the
codes from the vehicle’s computer. If data is erased, valuable information that
might help the technician troubleshoot the problem will also be erased.
2. Clearing DTCs does not x the problem(s) that caused the code(s) to be set. If
proper repairs to correct the problem that caused the code(s) to be set are not
made, the code(s) will appear again and the check engine light will illuminate as
soon as the problem that cause the DTC to set manifests itself.
6.2.6 Test Results: On-Board Monitoring Test
This function retrieves test results for emission-related powertrain components
and systems that are not continuously monitored. The test’s availability is
determined by the vehicle manufacturer.