How To Diagnose; Connections; Preparation; Dlc Location - Launch CRP229 User Manual

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5 How to diagnose

5.1 Connections

5.1.1 Preparation

Normal testing conditions
• Turn on the vehicle power supply.
• Vehicle battery voltage range should be 9-14V and working voltage of
CRP229 is 9-18V.
• Throttle should be closed at its close position.
• Ignition timing and idle speed should be within specified range; water
and transmission oil temperature are within normal working range
(water temperature is 90-110℃ and transmission oil temperature is 50-
80℃).
Select testing connectors
If CRP229 is testing vehicles equipped with universal OBD II 16 PIN
diagnostic socket, please use the included diagnostic connector. (For
vehicles with non-OBD II 16 PIN diagnostic socket, a non-16 PIN
connector is required.)

5.1.2 DLC Location

The DLC (Data Link Connector or Diagnostic Link Connector) is the
standardized 16-cavity connector where diagnostic code readers interface
with the vehicle's on-board computer. The DLC is usually located 12
inches from the center of the instrument panel (dash), under or around the
driver's side for most vehicles. If Data Link Connector is not located under
dashboard, a label should be there telling location. For some Asian and
European vehicles, the DLC is located behind the ashtray and the ashtray
must be removed to access the connector. If the DLC cannot be found,
refer to the vehicle's service manual for the location.
Near the center
of dashboard

5.1.3 Vehicle Connection

The method used to connect the diagnostic connector to a vehicle's DLC
depends on the vehicle's configuration as follows:
• A vehicle equipped with an OBD II management system supplies both
communication and 12V power through a standardized DLC.
• A vehicle not equipped with an OBD II management system supplies
CRP229 User's Manual
Fig. 5-1
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