Inspect fluid and plumbing first
Confirm fluid level, hose routing, disconnected hoses, frozen/restricted plumbing and blocked nozzles before electrical disassembly.
BODY ELECTRICAL · 2002 · WASHER
2002 Firebird Windshield Washers Inoperative
No washer spray can be fluid, plumbing, nozzle, pump, switch or electrical supply. Start with what the system actually does.
APPLICATION: 2002 Pontiac Firebird / Formula / Trans Am. Configuration-specific equipment must match the vehicle before applying a circuit path.
Listen and observe
A pump that runs with no spray sends diagnosis toward fluid delivery. No pump activity sends diagnosis toward pump command, feed, ground or the pump itself.
Test under the failed condition
Verify electrical delivery at the pump while washer is commanded. Do not use an unloaded voltage reading alone as proof the circuit can operate the pump.
DO NOT REPLACE THE PUMP YET
Prove the pump receives a usable command and that the fluid path is open before condemning it.
FPV RULE
OBSERVE → MEASURE → ISOLATE → PROVE → REPAIR → VERIFY. A symptom or DTC is a starting point, not a parts verdict.
AFTER THE FAILURE IS PROVEN
Use the proven failed branch—not the original symptom—to choose the replacement. Go from diagnosis to the Parts Verdict →