DLC3 Inspection
- If scan tool displays UNABLE TO CONNECT TO VEHICLE when scan tool is connected, try scan tool on another vehicle. If scan tool operates on another vehicle, go to next step. If scan tool does not operate on another vehicle, problem is probably with scan tool.
- Check DLC3 for loose or damaged terminals. Ensure DLC3 terminals are in correct position in connector. See appropriate SELF-DIAGNOSTICS article in ENGINE PERFORMANCE. Repair as necessary. If connector and terminals are okay, go to next step.
- Check voltage and resistance between ground and specified terminal on DLC3. See DLC3 VOLTAGE & RESISTANCE SPECIFICATIONS table. See Figure. If voltage and resistance readings are not as specified, check circuit in question.
DLC3 VOLTAGE & RESISTANCE SPECIFICATIONS
| Terminal No. (Application) | Specification |
|---|---|
| 4 (Chassis Ground) | One Ohm Or Less |
| 5 (Signal) | One Ohm Or Less |
| 16 (Battery Voltage) | 9-14 Volts |