Emissions Maintenance Light: Service and Repair

Fig. 3 Resetting Warning Light.:

1. In addition to displaying computer system malfunction codes (codes only on Calif. models), "CHECK" light on Federal B2200 and B2600 Pickups acts as an emission maintenance warning. The "CHECK" engine warning light will come on at 60,000 (for EGR) and 80,000 (for O2) miles.

2. To reset warning light (after servicing indicated component), locate Brown/White, Black, and Green wires under left side of dash (taped to wiring harness above/relay block).

3. At 60,000 mile intervals, unplug Black wire connector from Brown/White wire connector and plug it into Green wire connector. At 80,000 mile intervals, return the Black wire connector to Brown/White wire connector. See Fig. 3.