Test F: Seat Belt Warning Indicator Inoperative
- Turn ignition switch to LOCK position. Disconnect instrument cluster harness connector C225. Turn ignition switch to RUN position. Measure voltage between ground and terminal No. 7 (Dark Green/Light Green wire) at instrument cluster connector C225. See Fig 1. If battery voltage is not present, go to next step. If battery voltage exists, replace instrument cluster. See INSTRUMENT CLUSTER under REMOVAL & INSTALLATION.
- Ensure ignition is on. Measure voltage between ground and terminal No. 7 (Dark Green/Light Green wire) at instrument cluster connector C225. See Fig 1. This is a prove out circuit test and voltage will only last for a few seconds. If battery voltage is not present, go to next step. If battery voltage exists, repair open in Black wire between instrument cluster, splice S207 (located at top of steering column, on air bag sliding contact) and ground G203 (located at upper left side of instrument panel).
- Turn ignition switch to LOCK position. Disconnect chime module harness connector C214. Chime module is located behind center of instrument cluster. Measure resistance of Dark Green/Light Green wire between terminal No. 7 at instrument cluster connector C225 and terminal No. 6 at chime module connector C214. See Fig 1 and Fig 2
. If resistance is 5 ohms or less, go to next step. If resistance is more than 5 ohms, repair open in Dark Green/Light Green wire between terminal No. 7 at instrument cluster connector C225 and terminal No. 6 at chime module connector C214.
- Remove seat belt warning indicator bulb from instrument cluster. Check continuity between bulb terminals. If continuity exists, replace instrument cluster. See INSTRUMENT CLUSTER under REMOVAL & INSTALLATION. If continuity does not exist, replace bulb and retest system.
Courtesy of FORD MOTOR CO.
Courtesy of FORD MOTOR CO.