2004 MITSUBISHI ENDEAVOR headlights

STEP 3. Check the battery case and cover.
1. Remove the hold-downs and shields.
2. Check for broken/cracked case or cover.
Q: Is the battery case or cover faulty?
YES: Replace the battery. Then go to Step 4.
NO: Go to Step 4.
STEP 4. Check the open circuit voltage.
1. Turn headlights on for 15 seconds.
2. Turn headlights off for two minutes to allow battery positive voltage to
stabilize.
3. Disconnect the battery cables.
4. Read open circuit voltage.
Q: Is open circuit voltage 12.4 volts or more?
YES: Go to Step 5.
NO: Charge the battery at 5 amps for 10.4 hours. Then re-test.
STEP 5. Check the load test.
1. Connect a load tester to the battery.
2. Load the battery at the recommended discharge rate (See LOAD TEST
RATE CHART
) for 15 seconds.
3. Read voltage after 15 seconds, then remove load.
4. Compare the measured value with the minimum voltage (See LOAD
TEST CHART
).
Q: Is the voltage higher than minimum voltage?
YES: The battery is normal.
NO: Replace the battery. Then go to Step 4 .
LOAD TEST RATE CHART
2004 Mitsubishi Endeavor Limited 2004 ELECTRICAL Battery - Endeavor

For belt tension, see ADJUSTMENTS
.
TROUBLE SHOOTING 1. Is battery in good condition?
If Yes, then go to next step. If No, then charge or replace battery.
2. Is generator drive belt in good condition? If Yes, then go to next step. If No, then adjust belt tension or replace belt.
3. Does the generator malfunction light come on when the ignition switch is
turned on? If Yes, then go to next step. If No:
Check the ignition switch.
Check for burnt-out generator malfunction light.
Check the generator.
Check the generator malfunction light-related circuits.
4. Does the generator malfunction light go out after starting the engine? If Yes, then go to next step. If No, check the generator.
5. Is an oscilloscope available? If Yes, then go to next step. If No, then go to step 7 .
6. Does the oscilloscope show a normal wave pattern? If Yes, then go to next step. If No, then check the generator.
7. Turn the engine on and idle at 2500 RPM. Turn the headlights on with the
High Beams on. Be sure that there is voltage between generator terminal B and
the positive battery terminal of 0.5V or less. Check that the voltage between
the negative batter
y terminal and
generator bod
y is 0.5V or less. Are the

2004 Mitsubishi Endeavor Limited
2004 STARTING & CHARGING SYSTEMS Generators & Regulators - Endeavor

4. Connect a clamp-type DC test ammeter with a range of 0-150A to the
generator B terminal output wire.
5. Connect a digital-type voltmeter between the generator B terminal and the
positive battery terminal. (Connect the positive lead of the voltmeter to the B
terminal, and then connect the negative lead of the voltmeter to the positive
battery cable.)
6. Reconnect the negative battery cable.
7. Connect an engine tachometer or scan tool MB991958.
8. Leave the hood open.
9. Start the engine.
10. With the engine running at 2500 RPM, turn the headlights and other lights on
and off to adjust the generator load so that the value displayed on the ammeter
is slightly above 30A. Read the voltmeter. Voltage reading at or below limit
value means voltage drop between generator and batter is OK. There should be
a maximum voltage of 0.3V.
11. If the value displayed on the voltmeter is above the limit value, there is
probably a malfunction in the generator output wire. Check the wiring between
the
generator B terminal and the
positive batter
y terminal
(includin
g fusible
NOTE: The way of disconnecting the generator output wire and
of connecting the ammeter is possibly not found the
problem that the output current is dropping due to the
insufficient connection between terminal B and the
output wire.
NOTE: When the generator output is high and the value
displayed on the ammeter does not decrease to 30A,
set the value to 40A. Read the value displayed on the
voltmeter at this time. In the case the limit value
becomes maximum 0.4V. Adjust the engine speed by
gradually decreasing it until the value displayed on the
ammeter is 30A. Take a reading of the value displayed
on the voltmeter at this time

2004 Mitsubishi Endeavor Limited
2004 STARTING & CHARGING SYSTEMS Generators & Regulators - Endeavor

11. Immediately after setting the headlights to high beam and turning the heater
blower switch to the highest position, increase the engine speed to 2,500 RPM
and read the maximum current output value displayed on the ammeter. Limit
value: 70 percent of nominal current output.
12. The reading on the ammeter should be above the limit value. If the reading is
below the limit value and the generator output wire is normal, remove the
generator from the engine and check the generator.
13. Run the engine at idle speed after the test.
14. Turn the ignition switch to the LOCK (OFF) position.
15. Disconnect the engine tachometer or scan tool MB991958.
16. Disconnect the negative battery cable.
17. Disconnect the ammeter and voltmeter.
18. Connect the negative battery cable.
19. Run the engine for 10 minutes at an idle. REGULATED VOLTAGE TEST Required special tools:
MB991958: Scan Tool MUT
-III Sub Assembly.
NOTE: The current output value will depend on the electrical
load and the temperature of the generator body.
NOTE: If the electrical load is small while testing, the specified
level of current may not be output even though the
generator is normal. In such cases, increase the
electrical load by leaving the headlights turned on for
some time to discharge the battery or by using the
lighting system in another vehicle, and then test again.
NOTE: The specified level of current also may not be output if
the temperature of the generator body or the ambient
temperature is too high. In such cases, cool the
generator and then test again.

2004 Mitsubishi Endeavor Limited
2004 STARTING & CHARGING SYSTEMS Generators & Regulators - Endeavor

See REGULATOR VOLTAGE SPECIFICATIONS TABLE
.
14. After the test, lower the engine speed to idle.
15. Turn the ignition switch to the LOCK (OFF) position.
16. Disconnect the engine tachometer or scan tool MB991958.
17. Disconnect the negative battery cable.
18. Disconnect the ammeter and voltmeter.
19. Connect the negative battery cable.
20. Run the engine for 10 minutes at an idle.
REGULATOR VOLTAGE SPECIFICATIONS
WAVE PATTERN CHECK USING AN OSCILLOSCOPE Abnormal Waveforms The size of the waveform patterns can differ greatly, depending on the adjustment
of the variable knob on the oscilloscope. See Fig. 6
.
Identification of abnormal waveforms is easier when there is a large output current
(regulator is not operating). Waveforms can be observed when the headlights are
illuminated.
Check the conditions of the generator malfunction light (illuminated/not
illuminated
) also, and carr
y out a total check.
Ambient Temp. °F (°C)
Voltage
Terminal S-4 (-20)
14.2-15.4
68 (20)
13.9-14.9
140 (60)
13.4-14.5
176 (80)
13.1-14.2

2004 Mitsubishi Endeavor Limited
2004 STARTING & CHARGING SYSTEMS Generators & Regulators - Endeavor

7. Does vehicle have an antenna which extend? If not eliminate this step.
If there is noise, the following causes can be considered.
8. If due to vehicle noise: It may not be possible to prevent noise if the signal is
weak.
9. If due to external noise: In almost all cases, prevention on the receiver side is
not possible. Weak signals especially are susceptible to interference.
If there is more noise than on radios in other vehicles, find out the noise condition
and the name and frequency of the receiving stations from the owner, and consult
with the radio manufacturer's service center. INSPECTION PROCEDURE 10: Sound mixed with Noise, Only at Night (AM). The following can be considered as possible causes of noise appearing only at
night.
1. It is significantly easier to receive long-distance signals at night. This means
that even stations that are received without a problem during the day may
experience problems at night. Remember that the weaker station is more
susceptible to interference. The appearance of a beat sound may occur in the
evening. A beat sound is created when two signals close in frequency interfere
with each other. A common sign of this type of interference is a repetitious
high-pitched sound that may over power the desired radio station. This sound is
generated not only by sound signals but electrical waves as well.
2. The changing system may also be a source of noise. When diagnosing radio
noise, do not over look the possibility of a problem with the vehicles generator. DIAGNOSIS
STEP 1. Check the vehicles lighting system.
Q: Does the noise disappear when the vehicles headlights are turned
"OFF"?
YES: Go to Ste
p 2.

2004 Mitsubishi Endeavor LS
2004 BODY & ACCESSORIES Radio With Tape Player & Cd Player - Endeavor

Fig. 24: Ground Distribution Circui
t
HEADLIGHTS
2004 Mitsubishi Endeavor LS
2004 SYSTEM WIRING DIAGRAMS Mitsubishi - Endeavor

Fig. 25: Headlights Circui
t
HORN
2004 Mitsubishi Endeavor LS
2004 SYSTEM WIRING DIAGRAMS Mitsubishi - Endeavor