Charging System Diagnosis
CHARGING SYSTEMCHARGING SYSTEM DIAGNOSIS
TROUBLESHOOTING HINTS
Generator malfunction light does not go on when the ignition switch is turned to ON, before the engine starts.
- Check the generator malfunction light.
Generator malfunction light does not switch off after the engine starts.
- Check the IC voltage regulator inside the generator.
Discharged or overcharged battery.
- Check the IC voltage regulator inside the generator.
TROUBLESHOOTING GUIDE
The charging system troubleshooting guide is shown in the following steps.
STEP 1.
Q: Is the battery in good condition?. Battery Test
YES: Go to Step 2.
NO: Charge or replace the battery.
STEP 2.
Q: Is the generator drive belt in good condition? [Refer to General - Maintenance Service - Drive Belts (For Generator and Power Steering Oil Pump) (Check Condition).
YES: Go to Step 3.
NO: Adjust the belt tension or replace the belt.
STEP 3.
Q: Does the generator malfunction light come on when the ignition switch is turned on?
YES: Go to Step 4.
NO:
Check the ignition switch. Ignition Switch Continuity Check
Check the generator malfunction light and its related circuits.
Check the generator [Refer to Charging System - Generator Assembly - Generator Assembly Inspection. Inspection [2.0L Engine Non-Turbo, 2.4L Engine]
STEP 4.
Q: Does the generator malfunction light go out after starting the engine?
YES: Go to Step 5.
NO: Check the generator. Inspection [2.0L Engine Non-Turbo, 2.4L Engine]
STEP 5.
Q: Is an oscilloscope available?
YES: Go to Step 6.
NO: Go to Step 7.
STEP 6.
Q: Does the oscilloscope show a normal wave pattern?. Oscilloscope Patterns and Waveforms
YES: Go to Step 7.
NO: Check the generator. Inspection [2.0L Engine Non-Turbo, 2.4L Engine]
STEP 7.
- Engine: 2,500 r/min
- Headlight: ON (high beam)
- Voltage between generator terminal B and the positive battery terminal
OK: 0.5 V or less
- Voltage between the negative battery terminal and generator body
OK: 0.5 V or less
Q: Are the generator output line and ground line in good condition?
YES: Go to Step 8.
NO: Check the generator output line and ground line.
STEP 8.
Q: Is the output current normal?. Output Current Test
YES: Go to Step 9.
NO: Check the generator Inspection [2.0L Engine Non-Turbo, 2.4L Engine]
STEP 9.
Q: Is the regulated voltage normal?. Regulated Voltage Test
YES: Go to Step 10.
NO: Check the generator Inspection [2.0L Engine Non-Turbo, 2.4L Engine]
STEP 10.
Q: Is the voltage drop in the generator output line normal?
YES: Generator is normal. Check other systems.
NO: Check the output line.