B1455

Code

Other B — Body

Wiper Washer Fluid Lamp Circuit Open

Brand: Other

Type: B — Body

Views: UK: 20 EN: 34 RU: 19

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Washer fluid warning lamp does not illuminate when it should (e.g., when fluid is low or during key-on lamp check)
No lamp test illumination on key-on/engine start
Intermittent operation of washer fluid lamp (may work when wires are moved)
Related washer fluid level warnings may be absent

Verify customer complaint and when lamp should illuminate (key-on lamp check, low fluid condition)
Check fuses related to instrument cluster/washer lamp
Visually inspect instrument cluster lamp/LED and harness for obvious damage or corrosion
Check reservoir fluid level and sensor connector for corrosion/loose pins
Scan BCM/cluster for stored codes and freeze frame data
Perform continuity and resistance checks between cluster lamp connector and BCM output

Key-on lamp test: cluster lamp supply should be present (approx. battery voltage or through resistor) during lamp check
When commanded on, lamp circuit should show ~12 V across lamp (or expected LED drive voltage) and near 0 Ω continuity through lamp filament or LED string
Open-circuit condition: infinite resistance (OL) between lamp terminals or between cluster output and lamp
Ground continuity: near 0–2 Ω from lamp ground to chassis ground when good
Washer fluid level sensor: switch-type expected ~0 Ω (closed) when low and open when full, or specified voltage/resistance for resistive sensors (consult vehicle data)

Confirm symptom: perform key-on lamp check and/or reproduce low-fluid condition to confirm lamp should be active.
Check fuses: inspect and test instrument cluster/BCM fuses; replace if blown and retest.
Visual inspection: examine cluster face, wiring harness, connectors, and reservoir sensor for damage or corrosion.
Lamp/bulb test: remove or access the cluster lamp/LED. Check for continuity with a multimeter; replace burned-out bulb or faulty LED module.
Connector/wiring continuity: with ignition off, disconnect connectors and check continuity between cluster/BCM output pin and lamp socket; repair any open circuits.
Voltage/ground probe: with ignition on, probe the lamp supply pin while performing lamp test or simulating low-fluid. Verify the driver supplies expected voltage and ground is good.
Wiggle test: with probing, gently wiggle harness and connectors to check for intermittent opens; repair any chafing or breaks.
Verify sensor input (if applicable): check washer fluid level sensor operation and wiring to BCM if lamp is driven by sensor reporting.
BCM/cluster check: if wiring, lamp and fuses are good but no output, verify BCM/cluster output driver using wiring diagrams and consider module replacement or repair per manufacturer guidance.
After repair, clear codes and perform functional test: verify lamp operates during key-on lamp check and when low-fluid condition is present.