GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Saturn 🢒 2002 🢒 SL1/SC1 🢒 Body and Accessories 🢒 Lighting Systems 🢒 Diagnostic System Check - Lighting Systems
Table 1: System Check - Without Fog Lamps
Table 2: System Check - With Fog Lamps

System Check - Without Fog Lamps

ACTION

NORMAL RESULTS

    • Start the engine and allow to idle in PARK.
    • Neutral w/manual transaxle
    • Apply the park brake.
    • The high beam and low beam headlamps are OFF.
    • The daytime running lamps indicator is OFF.
    • Release the park brake.
    • Move the transaxle out of PARK (P) (Automatic).
    • The headlamps are ON at reduced brilliance (DRL mode).
    • The daytime running lamps indicator is ON.
    • Move the headlamp dimmer switch to LOW.
    • Turn the headlamp switch to HEAD.
    • The high beam headlamps are OFF.
    • The low beam headlamps are ON.
    • The daytime running lamps indicator is OFF.

Move the headlamp dimmer switch to HIGH.
    • The high beam headlamps and high beam indicator are ON.
    • The low beam headlamps are OFF.
    • The daytime running lamps indicator is OFF.

Turn headlamp switch to OFF.
    • The headlamps are ON at reduced brilliance.
    • The daytime running lamps indicator is ON during the day with the A/C OFF.

Turn the ignition switch to OFF.

The headlamps are OFF.

Move the headlamp switch to PARK.
    • The park lamps are ON.
    • The headlamps are ON at reduced brilliance (DRL mode).

The daytime running will operate normally during the day.

System Check - With Fog Lamps

ACTION

NORMAL RESULTS

    • Start the engine and allow it to idle.
    • Move the gear selector to any position except PARK (P).
    • The fog lamp switch is OFF.
    • Apply the park brake.
    • The fog lamps, high beam headlamps, and low beam headlamps are OFF.
    • The daytime running lamps indicator is OFF.

Release the park brake.
    • The headlamps and fog lamps are OFF.
    • The headlamps are ON at reduced brilliance (DRL mode).
    • The daytime running lamps indicator is ON.
    • Move the headlamp switch to HEAD.
    • Move the fog lamp switch ON.
    • The headlamp dimmer switch is in HIGH.
    • The high beam headlamps and high beam indicator are ON.
    • The low beam headlamps and fog lamps are OFF.
    • Move the headlamp dimmer switch to LOW.
    • Move the fog lamp switch to ON.
    • The low beam headlamps and fog lamps are ON.
    • The high beam headlamps and high beam indicator are OFF.
    • Move headlamp switch to PARK.
    • Fog lamp switch is still ON.
    • The headlamps are OFF.
    • The fog lamps are ON.

Turn the ignition switch OFF.

Headlamps and fog lamps are OFF.