BRAKE FLUID Light
- Check if light is working by turning ignition switch to a position between START and DRIVE. If light does not come on, check bulb. If light does not come on if pressure is low, go to next step. If light does not come on when fluid level is low, go to step 4).
- Disconnect brake fluid pressure warning switch. Turn ignition on. Check for battery voltage at pressure switch connector terminal No. 2 (White wire). If voltage is not present, check White wire for continuity between pressure switch connector terminal No. 2 and instrument panel connector terminal No. 11.
- If voltage is present at pressure switch connector terminal No. 2, turn ignition off and depressurize system. Ensure continuity is present between pressure warning switch connector terminals No. 1 and 2. If continuity is not present, replace switch. If continuity is present and switch is okay, check Black wire between pressure switch connector terminal No. 1 and ground.
- Ensure level warning switch connector is disconnected. See Fig 1. Turn ignition on. Check for battery voltage at reservoir switch connector terminal No. 4 (White wire). If voltage is not present, check White wire between reservoir switch connector terminal No. 4 and instrument panel connector terminal No. 11. If voltage is present, turn ignition off and go to next step.
- Check level switch by ensuring circuit is closed when float is pressed down, and circuit is open when float is up. If float does not operate to specification, install new reservoir. If float does operate to specification, check Black wire at terminal No. 3 for good continuity to ground.
Courtesy of SAAB-SCANIA OF AMERICA, INC.