DIESEL CONTROL SYSTEM
Disconnect alternator connector.
Ground alternator connector terminal 2 to chassis ground using jump wire.
specification : charging lamp "ON" when grounded to chassis ground.
Does charging lamp turn ON?
▶ Go to "3.Check voltage drop of aternator B+ cable".
▶ Replace lamp and go to "Verification of Vehicle Repair".
Check voltage drop of aternator B+ cable
IG KEY "ON", Turn engine "ON".
Measure the voltage difference between alternator B+ terminal and battery + terminal.
specification : below 0.2V (below 200mV)
Is the measured voltage within the specification? (Is the voltage drop in alternator B+ cable normal? )
▶ Go to "Component Inspection".
▶ After checking corrosion and deformation of alternator B+ cable and replace it if needed and go to "Verification
IG KEY "OFF", ENGINE "OFF".
Check belt tension which operates alternator .
Check battery terminal and fusible link, poor connection or corrosion of alternator B+ terminal.
Turn Engien "ON".
Operate the electrical device such as head lamp,defroster and blower motor.
Check battery voltage at above 2000 RPM.
Specification : 12.5V~14.5V
Is the measured voltage within the specification?
▶ Alternator is performing within the specification.