2012 SSANGYONG KORANDO alternator

14-4
2. COMPARISON
ItemDescription
D20DTF D20DTF (Low CO2)
Effective date From March, 2012
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)
ECU Without EEM logic With EEM logic
EBS NoneMonitoring the battery conditions (voltage,
current, temperature and SOC)

14-70000-00
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 ▶
<007b009c0099009500470096008d008d00470088009300930047008c0093008c008a009b00990090008a0047008b008c009d0090008a008c009a004700880095008b00470097009c009b0047009b008f008c00470090008e00950090009b00900096009500
47009a009e0090009b008a008f004702c80076007502c90047>(Pre-warning).
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.

14-90000-00
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.

14-10
5. INSPECTION - REGULATING VOLTAGE
Perform the basic inspection. -
Setting up the testers ▶
Preparation ▶
Set up the ammeter and voltmeter as shown
in the figure. 1.
Inspection ▶
Turn the ignition ON and measure the voltage on the voltmeter. 1.
Start the engine and turn all electric devices OFF.
Increase the engine speed to 2,700 rpm and maintain the speed. Measure the voltage when the
output current from alternator decrease below 30A. 2.
3.
Specified valueover 12V
Specified value11.5 ~ 15.5V
Make sure to set up the tester while keeping
its polarity.

14-150000-00
8. DTC SETTING CONDITIONS
Charge warning lamp ON condition ▶
Turn the ignition ON (Engine stopped)
Open or short circuit of L terminal wiring, open or short internal circuit of alternator (fixed control of
13.8V)
Open or short circuit of F terminal wiring, no feedback output signal 1.
2.
3.

14-16
1. LAYOUT
D20DTF(Low CO2) D20DTF
ECUBattery sensor (EBS)
Alternator (ALT)
Meter cluster (charge
warning lamp)

14-18
Operation of charge warning lamp ▶
ECU checks the generating voltage from alternator and circuit conditions and sends the warning lamp ON
signal to meter cluster through CAN line.Basic control logic according to the driving conditions ▶
Engine ECU determines the engine loads according to the fuel injection volume and engine speed. It
charges the battery by increasing the generating voltage during deceleration. To improve the fuel
economy by reducing the alternator load during acceleration, engine ECU decreases the generating
voltage and consumes the battery voltage.

14-190000-00
3. CAN COMMUNICATION (Charge Warning Lamp)
Overview ▶
Meter cluster
(charge warning lamp)
The meter cluster receives the charge warning lamp ON signal from ECU through CAN line.
Charge warning lamp ON conditions
Pre-warning
When DTC related EEM set
Open or short circuit in alternator -
-
-
Circuit diagram ▶