Mitsubishi Outlander XL. Manual — part 441

NO:

Check the generator output line and ground line.

STEP 8.

Q:Is the output current normal? (Refer to Charging System

- On-vehicle Service - Output Current Test P.16a-8.)

YES:

Go to Step 9.

NO:

Check the generator related circuit. If the circuit

is normal, replace the generator (Refer to Charging
System - Generator Assembly - Generator Assembly Removal
and Instllation P.16a-13).

STEP 9.

Q:Is the regulated voltage normal? (Refer to Charging

System - On-vehicle Service - Regulated Voltage Test.)

YES:

Go to Step 10.

NO:

Check the generator related circuit. If the circuit

is normal, replace the generator (Refer to Charging
System - Generator Assembly - Generator Assembly Removal
and Instllation P.16a-13).

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.

SPECIAL TOOL

M11601000006USA0000010000

TOOL

TOOL

NUMBER

AND

NAME

SUPERSESSION

APPLICATION

MB991958
Scan tool (M.U.T.-III sub
assembly)

A: MB991824
Vehicle

communication

interface (V.C.I.)
B: MB991827
M.U.T.-III USB cable
C: MB991910
M.U.T.-III main harness A
(Vehicles

with

CAN

communication system)
D: MB991911
M.U.T.-III main harness B
(Vehicles without CAN
communication system)
E: MB991914
M.U.T.-III main harness C
(for

Daimler

Chrysler

models only)
F: MB991825
M.U.T.-III

measurement

adapter

MB991824-KIT

NOTE:

M.U.T.-III Trigger

Harness is not necessary
when pushing V.C.I. ENTER
key.

Checking

of

engine

speed

For vehicles with CAN
communication,

use

M.U.T.-III main harness
A to send simulated
vehicle speed. If you
connect M.U.T.-III main
harness B instead, the
CAN communication
does

not

function

correctly.

CHARGING SYSTEM

16a-5

SPECIAL TOOL

TOOL

TOOL

NUMBER

AND

NAME

SUPERSESSION

APPLICATION

G: MB991826
M.U.T.-III trigger harness

MB991519
Generator

harness

connector

MIT530
Micrd 530 charging system
tester.

Checking of generator
("S" terminal voltage)

ON-VEHICLE SERVICE

GENERATOR OUTPUT LINE VOLTAGE DROP TEST

M11601000009USA0000010000

ZK600347AA00

Generator

Ammeter
(Clamp-type)

Voltmeter
(Digital-type)

"B" terminal

Battery

Required Special Tool:

MB991958: Scan Tool (M.U.T.-III Sub Assembly)

｠

MB991824: V.C.I.

｠

MB991827: M.U.T.-III USB Cable

｠

MB991910: M.U.T.-III Main Harness A

This test determines whether the wiring from the
generator "B" terminal to the positive battery terminal
(including the fusible link) is in good condition or not:

Battery posts, terminals and related accessories
contain lead and lead compounds. WASH HANDS
AFTER HANDLING.

1.

Always be sure to check the following before the
test.

｠

Generator installation

｠

Generator drive belt tension (Refer to GROUP
00, General - Maintenance Service - Drive Belts
(For Generator, and Air Conditioning) (Check) P.
00-58.)

｠

Fusible link

｠

Abnormal noise from the generator while the
engine is running.

2.

Turn the ignition switch to the "LOCK" (OFF)
position.

3.

Disconnect the negative battery cable.

4.

Connect a clamp-type DC test ammeter with a
range of 0 - 150 A to the generator "B" terminal
output wire.

NOTE:

The way of disconnecting the generator

output wire and of connecting the ammeter is
possibly not found the problem that the output

16a-6

CHARGING SYSTEM

ON-VEHICLE SERVICE

current is dropping due to the insufficient
connection between terminal "B" and the 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 2,500 r/min, 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 30 A.
Read the voltmeter. Voltage reading at or below
limit value means voltage drop between generator
and battery is OK.

Limit value: maximum 0.3 V

NOTE:

When the generator output is high and

the value displayed on the ammeter does not
decrease to 30 A, set the value to 40 A. Read
the value displayed on the voltmeter at this
time.In this case the limit value becomes

maximum 0.4 V.Adjust the engine speed by
gradually decreasing it until the value
displayed on the ammeter is 30 A. Take a
reading of the value displayed on the voltmeter
at this time.

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 battery
terminal (including fusible link).
If a terminal is not sufficiently tight or if the harness
has become discolored due to overheating, repair
and then test again.

12.

After the test, run the engine at idle.

13.

Turn off all lights and turn the ignition switch to the
"LOCK" (OFF) position.

NOTE:

Vehicles for Canada, the headlight,

taillight, etc. remain lit even when the
lighting switch is in "OFF" position.

14.

Disconnect the engine tachometer or scan tool
MB991958.

15.

Disconnect the negative battery cable.

16.

Disconnect the ammeter and voltmeter.

17.

Connect the negative battery cable.

18.

Run the engine for 10 minutes at an idle.

CHARGING SYSTEM

16a-7

ON-VEHICLE SERVICE

OUTPUT CURRENT TEST

M11601000010USA0000010000

ZK600348

CAN communication

Generator

Ammeter (clamp-type)

Voltmeter

ECM

Load

B

FR

L

S

G

Generator
malfunction light

Battery

+

AA00

–

Combination meter

Required Special Tool:

MB991958: Scan Tool (M.U.T.-III Sub Assembly)

｠

MB991824: V.C.I.

｠

MB991827: M.U.T.-III USB Cable

｠

MB991910: M.U.T.-III Main Harness A

This test determines whether the generator outputs
normal current. For best results, use a charging
system tester. If not available, follow the steps below.

Battery posts, terminals and related accessories
contain lead and lead compounds. WASH HANDS
AFTER HANDLING.

1.

Before the test, always be sure to check the
following.

｠

Generator installation

｠

Battery (Refer to GROUP 54A, Chassis Electrical
- Battery - On-vehicle Service - Battery Check P.
54Aa-2.)

NOTE:

The battery to be used should be

slightly discharged. The load in a fully-
charged battery will be insufficient and the
test may not be able to be carried out
correctly.

｠

Generator drive belt tension (Refer to GROUP
00, General - Maintenance Service - Drive Belts
(For Generator, Power Steering Pump and Air
Conditioning) (Check) P.00-58.)

｠

Fusible link

｠

Abnormal noise from the generator while the
engine is running.

2.

Turn the ignition switch to the "LOCK" (OFF)
position.

16a-8

CHARGING SYSTEM

ON-VEHICLE SERVICE