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 MANUALSHYUNDAI2014SONATA HYBRID BASEREPAIR AND DIAGNOSISENGINE PERFORMANCEENGINE CONTROL SYSTEMSGENERAL INFORMATION (FUEL SYSTEM) (HEV)TROUBLESHOOTINGBASIC TROUBLESHOOTING• CHECK SHORT CIRCUIT

2014 Hyundai Sonata Hybrid Base

• Check Short Circuit

2014 Hyundai Sonata Hybrid BaseSECTION • Check Short Circuit

Test Method for Short to Ground Circuit
1. Continuity Check with Chassis Ground
If short to ground circuit occurs as shown in [Fig 1], the broken point can be found by performing Step 2 (Continuity Check Method with Chassis Ground) as shown below.

Fig 1: Measuring Resistance Between Connector And Chassis Ground
Courtesy of HYUNDAI MOTOR CO.
Continuity Check Method (with Chassis Ground)
NOTE: Lightly shake the wire harness above and below, or from side to side when measuring the resistance.

Specification (Resistance)

1Ω or less → Short to Ground Circuit

1MΩ or Higher → Normal Circuit
1. Disconnect connectors (A), (C) and measure for resistance between connector (A) and Chassis Ground as shown in [Fig 2].
  The measured resistance of line 1 and 2 in this example is below 1 Ω and higher than 1MΩ respectively. Specifically the short to ground circuit is line 1 (Line 2 is normal). To find exact broken point, check the sub line of line 1 as described in the following step.
  
  Fig 2: Measuring Resistance Between Connector (A) And Chassis Ground And Between (B1) And Chassis Ground
  Courtesy of HYUNDAI MOTOR CO.
2. Disconnect connector (B), and measure the resistance between connector (A) and chassis ground, and between (B1) and chassis ground as shown in [Fig 3].
  The measured resistance between connector (B1) and chassis ground is 1Ω or less. The short to ground circuit is between terminal 1 of connector (C) and terminal 1 of connector (B1).
  
  Fig 3: Checking Voltage Drop Across Wire
  Courtesy of HYUNDAI MOTOR CO.

RENDER: 1.0x

NO RELATED

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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.