LAUNCH TECH X-431 GDS - 3 How to Diagnose; Preparation and Connections; Preparation; X-431 GDS Connections

LAUNCH X-431 GDS User’s Manual
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3. How to diagnose
3.1 Preparation and Connections
3.1.1 Preparation
1. Normal testing conditions
z Turn on the vehicle power supply.
z Vehicle battery voltage range should be 11-14V and working voltage of
X-431 GDS is
1
2V
.
z Throttle should be closed at its close position.
z Ignition timing and idle speed s
hould 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℃).
2. Select testing connectors
Please
select the corresponding connectors while X-431 GDS is testing
vehicles which are equi
pped with universal OBD II 16 PIN diagnostic socket.
3.1.2 X-431 GDS connections
X-431 GDS connection steps are as follows:
z Connect one terminal of main test cable to diagnostic terminal of X-431
GDS.
z Connect the ot
her terminal of main test cable to vehicle’s DLC.
3.2 Start diagnosing
X-431 GDS can test a lot of series, models and systems which may
continuously increase day by day. Please refer to the "Update" on the main
menu interface for more details of X-431 GDS and download the latest
diagnostic programs to fully enjoy its powerful diagnostic functions.
3.2.1 How to start diagnostic program
Make sure all connections are properly made (For detailed connection, please
refer to
3.1.2)
, p
ower o
n to enter the main menu, and then click "Diagnose":