Idle Switch (GLC)
- Bring engine to normal operating temperature. Stop engine and disconnect electrical connector from switch. Connect ohmmeter to Brown/Red and Green/Yellow terminals of switch connector.
- Depress accelerator pedal. Verify continuity between terminals. To adjust accelerator switch, bring engine to normal operating temperature and run at idle speed. Adjust idle if necessary.
- Loosen accelerator switch adjusting screw completely. Gradually tighten adjusting screw until a "clicking" sound is heard. Complete adjustment by turning adjusting screw an additional 1 1/4-1 1/2 turns and retest switch.