Mitsubishi L200. Manual — part 226

CRUISE CONTROL

ENGINE AND EMISSION CONTROL

17-8

Tool

Number

Name

Use

MB991910

MB991826

MB991955

MB991911

MB991824

MB991827

MB991825

a

b

c

d

e

f

DO NOT USE

MB991955

a: MB991824
b: MB991827
c: MB991910
d: MB991911
e: MB991825
f: MB991826

M.U.T.-III sub-assembly

a: Vehicle Communication

Interface (V.C.I.)

b: M.U.T.-III USB cable
c: M.U.T.-III main harness A

(Vehicles with CAN
communication system)

d: M.U.T.-III main harness B

(Vehicles without CAN
communication system)

e: M.U.T.-III measurement

adapter

f: M.U.T.-III trigger harness

CAUTION

M.U.T.-III main harness A
should be used. M.U.T.-III
main harness B should not be
used for this vehicle. If you
connect M.U.T.-III main
harness B instead, the CAN
communication does not
function correctly.

• Checking diagnosis trouble

codes

• Checking data list

MB991223

a

d

c

b

DO NOT USE

BF

CRUISE CONTROL

ENGINE AND EMISSION CONTROL

17-9

TROUBLESHOOTING

DIAGNOSIS TROUBLESHOOTING FLOW

M1172002001045

Refer to GROUP 00

− How to Use Troubleshooting/

Inspection Service Points, Contents of Troubleshoot-
ing .

DIAGNOSIS FUNCTION

M1172002100964

METHOD OF READING THE DIAGNOSIS
CODE

Use the M.U.T.-III to read the diagnosis code (Refer
to GROUP 00

− How to Use Troubleshooting/Inspec-

tion Service Points, Diagnosis Function ).

NOTE: When reading the diagnosis code, do not
select the item under "CRUISE CONTROL," but
select the item under "DIESEL ENGINE."

METHOD OF ERASING THE DIAGNOSIS
CODE

Use the M.U.T.-III to erase the diagnosis code (Refer
to GROUP 00

− How to Use Troubleshooting/Inspec-

tion Service Points, Diagnosis Function ).
NOTE: When erasing the diagnosis code, do not
select the item under "CRUISE CONTROL," but
select the item under "DIESEL ENGINE."

CHECK CHART FOR DIAGNOSIS CODES

M1172002201180

Code No.

Diagnosis item

Reference page

P1564

Abnormal voltage at cruise control switch

P.17-10

P1571

Malfunction of the stop lamp switch

P.17-15

MB991223

a: MB991219
b: MB991220
c: MB991221
d: MB991222

Harness set

a: Check harness
b: LED harness
c: LED harness adapter
d: Probe

Making voltage and resistance
measurement during
troubleshooting

a: Connector pin contact

pressure inspection

b: Power circuit inspection
c: Power circuit inspection
d: Commercial tester

connection

MB992006

MB992006

Extra fine probe

Making voltage and resistance
measurement during
troubleshooting

MB992044

MB992291

Power plant ECU check
harness

• Measurement of voltage

during troubleshooting

• Measure engine-ECU

terminal voltage.

Tool

Number

Name

Use

CRUISE CONTROL

ENGINE AND EMISSION CONTROL

17-10

DIAGNOSIS CODE PROCEDURES

Code No.P1564: Abnormal voltage at cruise control switch

ACA01400

Wire colour code
B : Black LG : Light green G : Green L : Blue W : White Y : Yellow SB : Sky blue
BR : Brown O : Orange GR : Grey R : Red P : Pink V : Violet PU : Purple Sl : Silver

CLOCK
SPRING

ENGINE-ECU

CRUISE
CONTROL
SWITCH

NOTE

:
:

LH drive vehicles
RH drive vehicles

Cruise Control Switch System Circuit

AB

ACA01401

C-103 (B)

Connector: C-103 <LH drive vehicles>

AB

ACA01402

C-103 (B)

Connector: C-103 <RH drive vehicles>

AB

AC903921

C-309 (L)

C-306 (B)

C-310

AB

Clock spring

Connectors: C-306, C-309, C-310
<LH drive vehicles>

AC903919

C-309 (L)

C-306 (B)

C-310

AB

Clock spring

Connectors: C-306, C-309, C-310
<RH drive vehicles>

CRUISE CONTROL

ENGINE AND EMISSION CONTROL

17-11

OPERATION
This circuit judges the signals of each switch ("ON/
OFF", "CANCEL", "COAST/SET" and "ACC/RES") of
the cruise control switch. The engine-ECU detects
the state of the cruise control switch by sensing the
voltages shown below.

• When all switches are released: 4.7 − 5.0 volts

• When the "ON/OFF" switch is pressed: 0 − 0.5

volt

• When the "CANCEL" switch is pressed: 1.0 − 1.8

volts

• When the "COAST/SET" switch is pressed: 2.3 −

3.0 volts

• When the "ACC/RES" switch is pressed: 3.5 −

4.2 volts

DIAGNOSIS CODE SET CONDITIONS

• If the cruise control switch is operated, this diag-

nosis code will be set when the engine-ECU ter-
minal voltage is different from the standard value.

• Or, this code is set when the "COAST/SET"

switch or "ACC/RES" switch is stuck to ON.

PROBABLE CAUSES

• Damaged harness or connector.

• Malfunction of the cruise control switch.

• Malfunction of the clock spring.

• Malfunction of the engine-ECU.

DIAGNOSIS PROCEDURE

STEP 1. Check the data list.
Using M.U.T.-III, check the data list (Refer to

P.17-29

− data list reference table).

• Item 136: "ON/OFF" switch

• Item 137: "CANCEL" switch

• Item 138: "COAST/SET" switch

• Item 139: "ACC/RES" switch

Q: Is the check result normal?

YES :

Go to Step 25.

NO :

Go to Step 2.

STEP 2. Measure the terminal voltage at cruise
control switch connector C-309.
(1) Remove the cruise control switch from the

steering wheel with the cruise control switch
connector connected (Refer to

P.17-33

).

(2) Connect the negative battery terminal that was

disconnected when the driver's air bag module
was removed.

(3) Turn the ignition switch to the "ON" position.
(4) Do not operate the cruise control switch.
(5) Measure the terminal voltage between cruise

control switch connector C-309 terminal No.3 and
earth with cruise control switch connector C-309
connected.

OK: 4.7

− 5.0 V

Q: Is the check result normal?

YES :

Go to Step 14.

NO :

Go to Step 3.

STEP 3. Measure the terminal voltage at engine-
ECU connector C-103.
(1) Remove the engine-ECU (Refer to GROUP 13A

− Engine-ECU ).

(2) Connect special tool power plant ECU check

harness (MB992291) between the engine-ECU
and the body-side harness connector.

(3) Turn the ignition switch to the "ON" position.
(4) Do not operate the cruise control switch.
(5) Measure the terminal voltage between special

tool 58-pin connector terminal No.139 (engine-
ECU connector C-103 terminal No.139) and
earth.

OK: 4.7

− 5.0 V

Q: Is the check result normal?

YES :

Go to Step 10.

NO :

Go to Step 4.