2013 SSANGYONG KORANDO alternator

Item How to check DTC set value / Action
Output current
B terminal current
Rotor coil
resistance
L terminal voltage
3. INSPECTION
1) Alternator
Output Test
Disconnect the cable connected to the B
terminal on the alternator. Connect one
end of the ammeter to the B terminal and
the other end to the cable connected to
the B terminal.
Measure the maximum output value.
(Maintain the engine speed between
2,500 and 3,000 rpm.)
(Turn the headlamp and all the electrical
switches on.) 1.
2.Pass: If the measured current
is 45 A or higher.
Fail: If the measured current is
less than 45 A.
Check the current of the B
terminal. -
-
-
Move the gear selector lever to the neutral
position.
Maintain the engine speed at 2,500 rpm
with the vehicle unloaded.
(Turn all the electrical switches off.) 1.
2.Open circuit: If the measured
current is 5 A or higher. -
Disconnect the negative cable from the
battery.
Remove the B terminal and turn off the
ignition switch.
Measure the resistance between the L
and F terminals with an ohmmeter. 1.
2.
3.Pass: If the measured
resistance is between 3 and
Faulty rotor coil or slip ring: If
the measured resistance is
-
-
Connect the B terminal wiring.
Measure the voltage with the engine
running. 1.
2.
Specification: 12.5V to 14.5V
Faulty IC regulator or field
coil: If the measured voltage
is 14.5V or higher. -
-
Disconnect the negative cable from the battery.
Connect the negative cable again after connecting the ammeter. -
-

1452-01
Troubleshooting
Item Cause Action
Overcharged batteryDefective alternator voltage regulator Replace
Defective voltage detection wiring Repair or replace
Discharged batteryLoose alternator drive belt
just the belt tension or
replace
Poor connection of related circuit or open
circuitRetighten the loose
connection or repair
open circuit
Defective alternator voltage regulator Replace
Terminated battery Replace
Defective ground Repair
Charge warning lamp does
not come on when turning on
ignition switch with engine
stoppedDefective alternator voltage regulator Replace
Open circuit in charge warning lamp, fuse
or wiringReplace or repair the
charge warning lamp or
fuse
Defective ignition switch Replace
Defective ground of alternator circuit Repair
Charge warning lamp does
not go off after starting
engineDefective alternator voltage regulator Replace
Corroded or worn battery cable Repair or replace
Loose alternator drive belt
Adjust the belt tension or
replace the belt
Defective wiring harness Repair or replace

1452-01
Using battery tester
PASS (11.0 V or more): Explain to the customer that the battery is reusable.
Need to be charged (9.0 to 11.0 V): Charge the battery with a charger and reinstall it. Explain it to the
customer.
Need to be replaced (9.0 V or more): The battery should be replaced due to overdischarging. -
-
-
How to use battery tester
Determine battery capacity by fixing current
(load capacity) and time and varying voltage.
Determine battery capacity based on the
amount of voltage drop when discharging a
fixed load capacity (120 A) for 5 seconds.
Connect the tester to the battery and read the
display while applying a load for 5 seconds. -
-
-
battery
(using a vehicle alternator and a battery
charger)
Impossible to charge with an alternator
Red area on the right-hand side of OK
-
-
-
-
-
-
-

Battery
It converts the chemical energy to the
electrical energy and supplies power to the
corresponding electric units when starting the
engine.
1. OVERVIEW
The charge system is designed to supply electrical energy to the vehicle while driving, and supplies a
constant direct current voltage by converting mechanical rotational movement to electrical energy. The
voltage regulator on the back of the alternator controls the generated voltage in all rotating ranges and
adjusts the system voltage according to the electric load and ambient temperature change.
Body ground
B+ wiringAlternator
The alternator charges the battery and
supplies power to each electric unit by
converting the mechanical energy to the
electrical energy.

0000-00
1. SPECIFICATIONS
Alternator Rated output
Battery Capacity 90Ah(20hr)
Reserve capacity 180 minutes
Starting current (when
engine cooed)710A
Weight 23kg
EBS
(Electronic Battery
Sensor)Resolving power 1mA
Operating voltage 7~18V
Operating temperature
Communication LIN 2.0
Unit Description Specification

ItemDescription
D20DTF D20DTF (Low CO2)
Applied engine D20DTF
Battery capacity 12V 90Ah
Alternator capacity Delphi 120A Delphi 140A
AlternatorChanged the diameter of belt pulley (Front view) )
Changed the regulator and control logic (Rear view)
EBSNoneMonitoring the battery conditions (voltage,
current, temperature and SOC)
2. COMPARISON

0000-00
Measuring the voltage drop between lines
Measure the voltage drop between alternator B+ and battery B+. -
Specified valuebelow 0.3V
If the value is out of the specified value, check the terminal and clamp for looseness.
Checking the charge warning lamp
Check if the charge warning lamp goes out.
If the charge warning lamp does not go off, inspect the electric circuit.
Start the engine and check if the charge warning lamp keeps off. 1.
2.
-
3.

0000-00
Inspection
Start the engine and turns on the headlamp, blower and heated wire at their full load. Then, measure
the maximum output current (MSM measurement value) when racing the engine to 2,700 rpm. 1.
Specified value60% of rated current (limit)
Turn the ignition OFF after inspection.
Disconnect the negative cable from the battery and remove the testers (ammeter and
voltmeter). 2.
3.
Characteristic curve (output from alternator)
The output current may not reach the limit value due to various parameters (high temperature or
electric load etc.). Thus, do not perform the inspection with fully charged battery.