Scan Tool Set-Up and Functionality

The Villager is equipped with a Data Link Connector (DLC). The Powertrain Control Module (PCM) has two modes of communication: Generic Diagnostic Tool (GDT) and expanded diagnostic capability. Both are accessed through the same Data Link Connector (DLC). In order for the diagnostic tool to communicate with the PCM in the proper mode the diagnostic tool must be connected to the DLC. Refer to the diagnostic tool manufacturer's manual for specific information.

Diagnostic Tool
1. Key OFF.
2. Verify That The Proper Memory (EPROM) card is inserted in the diagnostic tool.
3. Connect OBD II DLC cable to the diagnostic tool.
4. Connect OBD II DLC cable securely into the OBD II DLC.
5. Connect the diagnostic tool power supply cable to vehicle.
6. Turn key to ON or start vehicle if necessary. The diagnostic tool is ready to communicate with vehicle computers.
7. Follow instructions on the diagnostic tool screen display or in the Pinpoint Test.
8. To disconnect the tool, turn the key to OFF and disconnect the diagnostic tool from the DLC and power supply.

Generic Diagnostic Tool (GDT)
^ Refer to the diagnostic tool manufacturer's manual for specific cables and/or adapters required for diagnostic tool hookup.

OBD II Data Link Connector:

OBD II Data Link Connector
The OBD II DLC is located in the passenger compartment. It is attached to the instrument panel and accessible from the driver seat.

The OBD II DLC is rectangular in design and capable of accommodating up to 16 terminals. The connector has keying features to allow easy connection. The vehicle connector and the test equipment connector have latching features that ensure the test equipment connector will remain mated when properly connected.

Numeric Code Description:

Communication Error
It is possible to get a communication error from a diagnostic tool when initiating a diagnostic test or accessing Parameter Identification (PIDs). The communication error could be caused by operator error, the vehicle wiring, connectors, the Powertrain Control Module (PCM) or other control modules connected to the OBD II DLC wiring. The PCM will respond to a diagnostic tool whenever the tool requests a test. Listed in the Numeric Code Description are some of the numeric codes and descriptions that a diagnostic tool may display when trying to perform some PCM operations. It is possible to get other numeric codes not listed. For a complete list of communication response codes, refer to Society Of Automotive Engineers (SAE) document J2190 enhanced E/E Diagnostic Test Modes. Some are normal responses to valid requests. The others are communication error responses. If the tool displays any of the communication error responses, GO to QA1 in Pinpoint Tests, after checking diagnostic tool connections, cable/adapters and entry of vehicle information. Tests QA: Unable to Activate Self-Test Comm Error/DTC Not Listed