LEMON Manuals: Even more car manuals for everyone
Home >> Lincoln >> 2001 >> LS 3.9 A >> Repair and Diagnosis >> Accessories & Equipment >> Gauges & Instrument Panels >> Instrument Panels - Analog >> System Tests >> Test Aw: Instrument Panel Does Not Dim

Test Aw: Instrument Panel Does Not Dim

  1. Turn ignition switch to LOCK position. Connect New Generation Star (NGS) tester to Data Link Connector (DLC). DLC is located below left side of instrument panel, to right of steering column. Turn ignition switch to RUN position. Using NGS tester, retrieve and record continuous instrument cluster DTCs. Clear instrument cluster DTCs. Using NGS tester, perform instrument cluster self-test. If no instrument cluster DTCs are retrieved, go to next step. If instrument cluster DTC B1246 is retrieved, go to step  3 . If any other instrument cluster DTCs exist, repair code related problems. See INSTRUMENT CLUSTER MODULE DIAGNOSTIC TROUBLE CODE INDEX  table under SELF-DIAGNOSTIC SYSTEM.
  2. Turn ignition switch to RUN position. Turn headlights on. Using NGS tester, monitor instrument cluster PID DSWSTAT while rotating panel dimmer switch from lowest to highest position. If PID does not agree with switch position, go to next step. If PID agrees with switch position, replace instrument cluster.
  3. Turn ignition switch to LOCK position. Disconnect instrument panel dimmer module harness connector C206. Turn ignition switch to RUN position. Measure voltage between ground and instrument panel dimmer module harness connector C206 terminal No. 1 (Blue/Yellow wire). See Figure . If battery voltage exists, go to next step. If battery voltage does not exist, repair power distribution circuit as necessary. See POWER DISTRIBUTION article in WIRING DIAGRAMS.
  4. Turn ignition switch to LOCK position. Measure resistance between ground and instrument panel dimmer module harness connector C206 terminal No. 2 (Black wire). If resistance is 5 ohms or less, go to next step. If resistance is more than 5 ohms, repair open in Black wire between instrument panel dimmer module and joint connector No. 2.
  5. Disconnect instrument cluster 22-pin harness connector C220c. Measure resistance in Brown/Yellow wire between instrument panel dimmer module harness connector C206 terminal No. 4 and instrument cluster harness connector C220c terminal No. 4. See Figure and Figure . Resistance should be 5 ohms or less. Measure resistance between ground and instrument cluster harness connector C220c terminal No. 4 (Brown/Yellow wire). Resistance should be more than 10 k/ohms. If both resistances are as specified, go to next step. If either resistance is not as specified, repair open or short to ground to ground in Brown/Yellow wire between instrument cluster and instrument panel dimmer module.
  6. Measure resistance in White/Black wire between instrument panel dimmer module harness connector C206 terminal No. 3 and instrument cluster harness connector C220c terminal No. 16. Resistance should be 5 ohms or less. Measure resistance between ground and instrument cluster harness connector C220c terminal No. 16 (White/Black wire). Resistance should be more than 10 k/ohms. If both resistances are as specified, replace instrument panel dimmer module. If either resistance is not as specified, repair open or short to ground in White/Black wire between instrument cluster and instrument panel dimmer module.
scientia non olet · About LEMON Manuals