Preliminary Checks

Before checking the daytime running lamps (Canadian only) system, do the following:

1. Place park brake in OFF position and ignition switch to RUN.
2. Verify condition of DRL, lGN/GAU and HTR A/C Fuses. If blown, locate and repair source of overload. Then replace fuse.
3. Place light switch in ON and Headlamp dimmer switch in HIGH BEAM. If HIGH BEAM Headlamp(s) are inoperative, refer to HIGH BEAM LAMPS DO NOT OPERATE.
If HIGH BEAM headlamps operate place light switch in OFF and proceed with diagnostics.