Using Scan Tool
Using DRBIII scan tool, or equivalent aftermarket scan tool, retrieve codes and perform appropriate test. See DIAGNOSTIC TROUBLE CODE INDEX table. Connect scan tool to 16-pin Data Link Connector (DLC), below lower left edge of instrument panel.
DIAGNOSTIC TROUBLE CODE INDEX
| DTC | Description |
|---|---|
| P1595 | Speed Control Solenoid Circuits |
| P1596 | Speed Control Switch Always High |
| P1597 | Speed Control Switch Always Low |
| VER-4 | Powertrain Verification Test |