Check Short Circuit; Voltage Check Method; Continuity Check Method (With Chassis Ground) - Hyundai Seasall S250S Workshop Manual

Fuel System
b. Disconnect connector (B), and measure for
resistance between connector (C) and (B1) and
between (B2) and (A) as shown in [FIG. 3].
In this case the measured resistance between
connector (C) and (B1) is higher than 1㏁ and the
open circuit is between terminal 1 of connector
(C) and terminal 1 of connector (B1)..

3. Voltage Check Method

a. With each connector still connected, measure the
voltage between the chassis ground and terminal
1 of each connectors (A), (B) and (C) as shown in
[FIG. 4].
The measured voltage of each connector is 5V,
5V and 0V respectively. So the open circuit is
between connector (C) and (B).
96

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. 5],
the broken point can be found by performing Step 2
(Continuity Check Method with Chassis Ground) as
shown below.

2. Continuity Check Method (with Chassis Ground)

✍ NOTICE
Lightly shake the wire harness above and below, or
from side to side when measuring the resistance.
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Specification (Resistance)
1Ω or less → Short to Ground Circuit
1MΩ or Higher → Normal Circuit
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a. Disconnect connectors (A), (C) and measure for
resistance between connector (A) and Chassis
Ground as shown in [FIG. 6].
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
General Information