2.3
Location of the Data Link Connector (DLC)
The DLC (Data Link Connector or Diagnostic Link Connector) is the
standardized 16-cavity connector where diagnostic scan tools 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 connect If the DLC cannot be found, refer to the vehicle’s service
manual for the location.
Identifying specific malfunctioning section of the systems
Code Type
Sub-systems
Generic (SAE):
l=Fuel and Air Metering
P0,P2,P34^P39
2=Fuel and Air Metering
B0.B3
3=Igmtion System or Engine Misfire
CO, C3
4=Auxiliary Emission Controls
U0,U3
5=Vehicle Speed Control and Idle
Manufacturer specific:
Controls
PI, P30-P33
6=Computer Output Circuits
B1,B2
7=Transmission Controls
C1,C2
8=Transmission Controls
U1,U2
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