Test D: No Communication With Steering Column/Ignition/Lighting Control Module
WARNING: This page is about a different car, the 1997 Lincoln Mark VIII. However, it is still accessible from the selected car via links, so may be relevant.
- Test Black/Light Blue Wire For Open - Disconnect Steering Column/Ignition/Lighting (SCIL) control module connector C288. See Figure . Check resistance in Black/Light Blue wire between SCIL control module harness connector C288 and ground. If resistance is 5 ohms or less, go to next step. If resistance is greater than 5 ohms, repair open in Black/Light Blue wire.
- Test Black Wire For Open - Disconnect SCIL control module connector C287. See Figure . Check resistance in Black wire between SCIL control module harness connector C287 and ground. If resistance is 5 ohms or less, go to next step. If resistance is greater than 5 ohms, repair open in Black wire.
- Test Voltage At SCIL Control Module Connector C287 - Check voltage at Red/Orange, Light Blue/Red, White/Light Green and Dark Blue/Light Green wires of SCIL control module harness connector C287. If battery voltage does not exist at any wires, repair appropriate circuit and go to next step. If battery voltage exists, in all wires, test module communications. See MODULE COMMUNICATIONS NETWORK article.
- Test Voltage At SCIL Control Module Connector C289 - Check voltage at Black/White, Orange/Black and Pink/Light Green wires of SCIL control module harness connector C289. If battery voltage does not exist at any wires, repair appropriate circuit. If battery voltage exists, in all wires, test module communications. See MODULE COMMUNICATIONS NETWORK article.