LAUNCH TECH CRP 429HD User Manual page 22

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B. Read Fault Code
This function displays the detailed information of DTC records retrieved from the
vehicle's control system.
On the Read fault code page, you can do the following:
• Tap "Code Search" to search for more information about the current DTC
online.
• Tap "Report" to save the current data in text format. All diagnostic reports
can be accessed from "Data" -> "Diagnostic Report".
*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 confirm the location of the problem. This information can be
found in the vehicle's service manual.
C. Clear Fault Code
After reading the retrieved codes from the vehicle and certain repairs have been
carried out, you can use this function to erase the codes from the vehicle. Before
performing this function, please be sure the vehicle's ignition key is in the ON
position with the engine off.
*Note:
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 fix 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.
D. Read Data Stream
This option retrieves and displays live data and parameters from the vehicle's
ECU. This data including current operating status for parameters and/or sensor
information can provide insight on overall vehicle performance. It can also be
used to guide vehicle repair.
Tap "Read Data Stream", the system will display data stream items.
After selecting the desired items, tap "OK" to enter the data stream reading
page.
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CRP 429HD User's Manual