Index Hyundai Hyundai HD 65, Hyundai HD 72, Hyundai HD 78 - Electrical manual
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TROUBLESHOOTING INSTRUCTIONS
GI-9
TROUBLESHOOTING INSTRUCTIONS (2)
Never use a self-powered test lamp on circuits that contain solid state
modules. Damage to these modules may result.
An ohmmeter can be used in place of a self-powered test lamp.
The ohmmeter shows how much resistance there is between two points along a
circuit. Low resistance means good continuity.
Circuits which include any solid-state devices should be tested only with a
10-megaohm or higher impedance digital multimeter. When measuring
resistance with a digital multimeter, the battery negative terminal should be
disconnected. Otherwise, there may be incorrect readings. Diodes and
solid-state devices in a circuit can make an ohmmeter give a false reading.
To find out if a component is affecting a measurement, take one reading,
reverse the leads and take a second reading.
If different the solid-state device is affecting the measurement.
Use a jumper wire with a fuse to by-pass an open circuit.
A jumper wire is made up of an in-line fuse holder connected to a set of test leads.
This tool is available with small clamp connectors providing adaption to most con-
nectors without damage.
CAUTION
Do not use a fuse with a higher rating than the specified fuse that protects the
circuit being tested. Do not use this tool in any situation to substitute an input
or output at the solid-state control module, such as ECM, TCM, etc.
CAUTION
JUMPER WIRE WITH FUSE
A short finder is available to locate a short to ground. The short finder creates a
pulsing magnetic field in the shorted circuit and shows you the location of the
short through body trim or sheet metal.
SHORT FINDER
SELF-
POWERED
TEST LAMP
5A
TROUBLESHOOTING TEST
This test measures voltage in a circuit. When testing for voltage at a con-
nector, you do not have to separate the two halves of the connector. lnstead,
probe the connector from the back(backprobe). Always check both sides of
the connector because dirt and corrosion between its contact surfaces can
cause electrical problems.
A. Connect one lead of a test lamp or voltmeter to a ground. If you are using
a voltmeter, be sure it is the voltmeter's negative test lead you have con-
nected to ground.
B. Connect the other lead of the test lamp or voltmeter to a selected test
point(connector or terminal).
C. If the test lamp glows, there is voltage present. If you are using a
voltmeter, note the voltage reading. A loss of more than 1 volt from
specification indicates a problem.
1. TESTING FOR VOLTAGE
EVTGI70009L
TROUBLESHOOTING INSTRUCTIONS
GI-10
TROUBLESHOOTING INSTRUCTIONS (3)
A. Disconnect the battery negative terminal.
B. Connect one lead of a self-powered test lamp or ohmmeter to one end of
the part of the circuit you wish to test. If you are using an ohmmeter, hold
the leads together and adjust the ohmmeter to read zero ohms.
C. Connect the other lead to the other end.
D. If the self-power test lamp glows, there is continuity. If you are using an
ohmmeter, low or zero resistance means good continuity.
2. TESTING FOR CONTINUITY
A. Disconnect the battery negative terminal.
B. Connect one lead of a self-powered test lamp or an ohmmeter to the fuse
terminal on the load side.
C. Connect the other lead to a ground.
D. Beginning near the fuse block move the harness from side to side.
Continue this proceedure(about six inches apart) while watching the
self-powered test lamp or ohmmeter.
E. When the self-powered test lamp glows, or ohmmeter registers, there is a
short to a
ground in the wiring near that point.
3. TESTING FOR SHORT TO GROUND
HOT AT ALL TIMES
DASH
FUSE
BOX
SWITCH
SOLENOID
TEST LAMP
OR
VOLTMETER
R
ON
OFF
G
4
M11
SELF-
POWERED
TEST LAMP
OR
OHMMETER
STOP
LAMP
SWITCH
SOLENOID
G
SELF-POWERED
TEST LAMP
OR
VOLTMETER
Short to ground
Battery
disconnected
FUSE BOX
(Fuse removed)
Load
disconnected
SWITCH
4
M11
1
M11
R
EVTGI70010L
TROUBLESHOOTING INSTRUCTIONS
GI-11
TROUBLESHOOTING INSTRUCTIONS (4)
A. Remove the blown fuse. Leave the battery connected.
B. Connect the short finder across the fuse terminals.
C. Close all switches in series in the circuit that is being testing.
D. Turn on the short circuit locator. It sends pulses of current to the short.
This creates a pulsing magnetic field around the wiring between the fuse
box and the short.
E. Beginning at the fuse box, slowly move the short finder along the circuit
wiring. The meter will show current pulses through sheet metal and body
trim. As long as the meter is between the fuse and the short, the needle
will move with each current pulse. Once the meter is moved past the point
of the short, the needle will stop moving. Check around this area to locate
the cause of the short circuit.
4. TESTING FOR A SHORT WITH A SHORT FINDER
SHORT
FINDER
FUSE BOX
(Fuse removed)
R
4
M11
SWITCH
SOLENOID
G
Short to ground
Battery
disconnected
M11
1
METER
Move meter
along wire
Needle stops
moving here
Pulsing
magnetic
field
Pulsing
magnetic
field
EVTGI70011L
FUSE
＆
RELAY INFORMATION
EBF7DCCF
SD100-1
FUSE & RELAY INFORMATION (1)
<D4DD>
<D4AF/D4AL>
USE THE DESIGNATED FUSE ONLY
FUSE 1
15A
FUSE 2
5A
FUSE 3
10A
FUSE 4
10A
FUSE 5
15A
FUSE 6
5A
FUSE 7
5A
FUSE 8
10A
FUSE 9
10A
FUSE 10
15A
FUSE 11
10A
FUSE 12
10A
FUSE 14
15A
FUSE 15
10A
FUSE 16
20A
FUSE 17
10A
FUSE 18
15A
FUSE 19
10A
FUSE 20
20A
FUSE 21
20A
FUSE 23
10A
FUSE 24
15A
FUSE 25
10A
FUSE 26
10A
FUSE 27
10A
FUSE 28
10A
FUSE 29
10A
FUSE 30
10A
FUSE 31
10A
FUSE 32
5A
FUSE 33
20A
FUSE 34
15A
FUSE 35
10A
FUSE 36
15A
FUSE 1
15A
FUSE 2
5A
FUSE 3
10A
FUSE 4
10A
FUSE 5
15A
FUSE 6
5A
FUSE 7
5A
FUSE 9
15A
FUSE 11
10A
FUSE 12
10A
FUSE 13
20A
FUSE 14
10A
FUSE 15
10A
FUSE 16
10A
FUSE 17
10A
FUSE 18
15A
FUSE 19
15A
FUSE 23
10A
FUSE 24
15A
FUSE 25
10A
FUSE 26
10A
FUSE 27
10A
FUSE 28
10A
FUSE 29
10A
FUSE 30
10A
FUSE 31
10A
FUSE 33
15A
FUSE 34
15A
FUSE 36
15A
FUSE BOX
EVTSD7100AL
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