Fuse or lamp?
Two possible faults. Less guidance. Use your meter to decide which repair the evidence supports.
Progressive circuit 2 · workshop basicsCIRCUIT 1 · WORKSHOP BASICS
The work lamp won’t light.
The lamp switch is already ON. Find where the supply stops, repair the fault and prove the lamp works.
STEP 1 OF 7
Turn the key ON
Tap the ignition switch to power the work-lamp circuit.
WORK LAMP · 12 V TRAINING CIRCUIT
The circuit is preparing. If it stays here, check your connection and reload.
Lamp OFFBlack probe selected · tap a terminal
YOUR DIAGNOSTIC TOOL
Digital multimeter
DieselBench
OFF— —
OFF · V DCCOMV
The display updates as you move either probe.
Which fault fits both readings?
Supply stops at the fuse.
The input has 12.60 V and the output has 0.00 V with power commanded ON. You’ve proved the open fuse in this training circuit.
On a real vehicle, isolate power and investigate why a fuse opened before fitting the correct replacement. This simulation repairs the model safely.
FAULT PROVEN
You proved it.
The lamp works.
You measured the supply, found where it stopped and verified your repair.
★★★★★
- Score
- 100
- Tests
- 3
- Hints
- 0
Direct test path · 3 required checks verified
✓ Repair verified under power
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