Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
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HOMESERVICE MANUALSCHEVROLET2018SONIC PREMIER, 4D SEDAN, STANDARD TRANSREPAIR AND DIAGNOSISACCESSORIES & EQUIPMENTWIPER/WASHER SYSTEMSWIPER SYSTEM AND WASHER SYSTEMDIAGNOSTIC INFORMATION AND PROCEDURESDTC B370BCOMPONENT TESTING
2018 Chevrolet Sonic Premier, 4D Sedan, Standard Trans
Component Testing
2018 Chevrolet Sonic Premier, 4D Sedan, Standard TransSECTION Component Testing
Windshield Wiper/Washer Switch
- Ignition OFF, disconnect the harness connector at the S82 Windshield Wiper/Washer Switch.
- Test for infinite resistance between the signal terminal 4 and the low reference terminal 2 with the rear wiper switch in the OFF position.
- If less than infinite resistance
Replace the S82 Windshield Wiper/Washer Switch.
- Go to next step: If infinite resistance
- If less than infinite resistance
- Verify the resistance is within the range specified below between the signal circuit terminal 4 and the low reference circuit terminal 2 by cycling the switch between Rear Wiper position and Rear Washers position.
- Rear Wiper : 624 - 644 Ω
- Rear Wiper Sweep : 1.8 - 2.2 kΩ
- Rear Washer : 5.9 - 6.4 kΩ
- If not within the specific range
Replace the S82 Windshield Wiper/Washer Switch.
- Go to next step: If within the specific range
- All OK
RENDER: 1.0x
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.