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.
Check Short Circuit
- Test Method for Short to Ground Circuit
- Continuity Check with Chassis Ground
If short to ground circuit occurs as shown in [Figure below], the broken point can be found by performing Step 2 (Continuity Check Method with Chassis Ground) as shown below.
- Continuity Check Method (with Chassis Ground)
- Lightly shake the wire harness vertically or horizontally when measuring the resistance.
Specification (Resistance)Β
1Ξ© or less β Short to Ground Circuit
1MΞ© or Higher β Normal Circuit
- Disconnect connectors (A) and (C) and measure the resistance between connector (A) and Chassis Ground as shown in [Figure below].
The measured resistance is below 1 Ξ© for line 1 and higher than 1 MΞ© for line 2. Specifically, the short to ground circuit is in line 1. (Line 2 is normal.) To find exact broken point, check the sub line of line 1 as described in the following step.
- Disconnect connector (B), and measure the resistance between connector (A) and chassis ground, and between (B1) and chassis ground as shown in [Figure below].
The measured resistance between connector (B1) and chassis ground is 1Ξ© or less. The short to ground circuit is between terminal 1 of connector (C) and terminal 1 of connector (B1).
Use the Manual With the Right Hardware
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- β’ You smell fuel, burning insulation, or see smoke.
- β’ Brakes feel soft, pull hard to one side, or make grinding noises.
- β’ The engine overheats, stalls repeatedly, or misfires under load.
- β’ You are missing required tools, torque specs, or safe lifting equipment.
- β’ You are not confident in the next step or safety outcome.