Operation Manual

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 the Data Link Connector is not located under the dashboard, a label

should be there revealing its 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.

DTC Example

P 0 5 2 0

System s

B = Body

C = Chassis

P = Power tr ain

U = Network

Last two digi ts i dentify individual

component within the system

Cod e Typ e

Gen eric ( SAE) :

Man u fact u rer Specif ic:

P1, P2

B1, B2

C1, C2

U1, U2

Su b -system s

1 = Fuel and air meter i ng

2 = Ignition s ystem or engine mi s fir e

3 = Aux i liary emis s ions c ontrols

4 = Vehic l e s peed contr ol and i dl e c ontrols

5 = Computer output c ir cuits

6 = Transmissi on contr ols

Figure 1-2: Explanation of a diagnostic trouble code.

2.3 Location of the Data Link Connector (DLC)

Figure 1-3: The DLC connector (left) can be found in the

area of the car interior seen at right (black arrow).