SYS.OK|MANUAL.DB● LIVE
HOMESERVICE MANUALSKIA2015OPTIMA HYBRIDREPAIR AND DIAGNOSISENGINE PERFORMANCEENGINE CONTROL SYSTEMSENGINE CONTROL/FUEL SYSTEM - GENERAL INFORMATION (HEV)TROUBLESHOOTINGBASIC TROUBLESHOOTINGCHECK SHORT CIRCUIT
2015 Kia Optima Hybrid

Check Short Circuit

2015 Kia Optima HybridSECTION Check Short Circuit
  1. Test Method for Short to Ground Circuit
    • 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 in illustration below.

    Fig 1: Checking Electrical Circuit (Short Circuit)
    G08312796Courtesy of KIA MOTORS AMERICA, INC.
  2. 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
      G08312797Courtesy of KIA MOTORS AMERICA, INC.
    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: Measuring Resistance Between Connector (C), (B1) And Chassis Ground
G08312798Courtesy of KIA MOTORS AMERICA, INC.
RENDER: 1.0x

NO RELATED

Recommended Tools & Savings

Use the Manual With the Right Hardware

Pair factory procedures with proven DIY tools so the instructions are easier to execute.

Affiliate disclosure: We may earn a commission at no extra cost to you.

Shop Manual-Ready ToolsFree Quote CheckQuote Shield Pro

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.