Mitsubishi L200. Manual — part 227

CRUISE CONTROL

ENGINE AND EMISSION CONTROL

17-12

STEP 4. Connector check: C-103 engine-ECU
connector.

Q: Is the check result normal?

YES :

Go to Step 5.

NO :

Repair or replace the damaged connector.
Then go to Step 26.

STEP 5. Check the harness wire for short circuit
to earth between engine-ECU connector C-103
terminal No.139 and cruise control switch
connector C-309 terminal No.3.
(1) Disconnect engine-ECU connector C-103 and

measure at the harness connector side (Refer to
GROUP 13A

− Engine-ECU ).

(2) Turn the ignition switch to the "LOCK" (OFF)

position.

(3) Measure the continuity between engine-ECU

connector C-103 terminal No.139 and earth.

OK: open circuit

Q: Is the check result normal?

YES :

Go to Step 24 .

NO :

Go to Step 6.

STEP 6. Connectors check: C-309 cruise control
switch connector, C-306 and C-310 clock spring
connectors and C-53 <LHD> or C-35 <RHD>
intermediate connector.

Q: Is the check result normal?

YES :

Go to Step 7.

NO :

Repair or replace the damaged connector.
Then go to Step 26.

STEP 7. Check the harness wire between engine-
ECU connector C-103 terminal No.139 and clock
spring connector C-306 terminal No.5, and
between clock spring connector C-310 terminal
No.2 and cruise control switch connector C-309
terminal No.3.

• Check harness wire for short circuit and damage.

Q: Is the check result normal?

YES :

Go to Step 8.

NO :

Repair or replace the damaged harness
wire. Then go to Step 26.

STEP 8. Check the clock spring.
Refer to GROUP 52B

− Driver’s, Front Passenger’s

Air Bag Module(s) and Clock Spring Inspection .

Q: Is the check result normal?

YES :

Go to Step 9.

NO :

Replace the clock spring [Refer to GROUP
52B

− Driver’s, Front Passenger’s Air Bag

Module(s) and Clock Spring ]. Then go to
Step 26.

STEP 9. Check the cruise control switch.
Refer to

P.17-32

.

Q: Is the check result normal?

YES :

Go to Step 13.

NO :

Replace the cruise control switch (Refer to

P.17-33

). Then go to Step 26.

STEP 10. Connectors check: C-103 engine-ECU
connector, C-309 cruise control switch
connector, C-306 and C-310 clock spring
connectors and C-53 <LHD> or C-35 <RHD>
intermediate connector.

Q: Is the check result normal?

YES :

Go to Step 11.

NO :

Repair or replace the damaged connector.
Then go to Step 26.

STEP 11. Check the harness wire between
engine-ECU connector C-103 terminal No.139
and clock spring connector C-306 terminal No.5,
and between clock spring connector C-310
terminal No.2 and cruise control switch
connector C-309 terminal No.3.

• Check harness wire for open circuit and damage.

Q: Is the check result normal?

YES :

Go to Step 12.

NO :

Repair or replace the damaged harness
wire. Then go to Step 26.

STEP 12. Check the clock spring.
Refer to GROUP 52B

− Driver’s, Front Passenger’s

Air Bag Module(s) and Clock Spring Inspection .

Q: Is the check result normal?

YES :

Go to Step 13.

NO :

Replace the clock spring [Refer to GROUP
52B

− Driver’s, Front Passenger’s Air Bag

Module(s) and Clock Spring ]. Then go to
Step 26.

CRUISE CONTROL

ENGINE AND EMISSION CONTROL

17-13

STEP 13. 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 14.

STEP 14. 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) Push the "ON/OFF" switch with cruise control

switch connector C-309 connected, and measure
the terminal voltage between cruise control
switch connector C-309 terminal No.2 and earth.

OK: 0

− 0.5 V

Q: Is the check result normal?

YES :

Go to Step 20.

NO :

Go to Step 15.

STEP 15. 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) Push the "ON/OFF" switch, and measure the

terminal voltage between special tool 58-pin
connector terminal No.154 (engine-ECU
connector C-103 terminal No.154) and earth.

OK: 0

− 0.5 V

Q: Is the check result normal?

YES :

Go to Step 17.

NO :

Go to Step 16.

STEP 16. Connector check: C-103 engine-ECU
connector.

Q: Is the check result normal?

YES :

Go to Step 24.

NO :

Repair or replace the damaged connector.
Then go to Step 26.

STEP 17. Connectors check: C-309 cruise control
switch connector, C-306 and C-310 clock spring
connectors and C-53 <LHD> or C-35 <RHD>
intermediate connector.

Q: Is the check result normal?

YES :

Go to Step 18.

NO :

Repair or replace the damaged connector.
Then go to Step 26.

STEP 18. Check the harness wire between
engine-ECU connector C-103 terminal No.154
and clock spring connector C-306 terminal No.4,
and between clock spring connector C-310
terminal No.3 and cruise control switch
connector C-309 terminal No.2.

• Check harness wire for open circuit and damage.

Q: Is the check result normal?

YES :

Go to Step 19.

NO :

Repair or replace the damaged harness
wire. Then go to Step 26.

STEP 19. Check the clock spring.
Refer to GROUP 52B

− Driver’s, Front Passenger’s

Air Bag Module(s) and Clock Spring Inspection .

Q: Is the check result normal?

YES :

Go to Step 20.

NO :

Replace the clock spring and install the
driver’s air bag module [Refer to GROUP
52B

− Driver’s, Front Passenger’s Air Bag

Module(s) and Clock Spring ]. Then go to
Step 26.

STEP 20. Connectors check: C-103 engine-ECU
connector, C-309 cruise control switch
connector, C-306 and C-310 clock spring
connectors and C-53 <LHD> or C-35 <RHD>
intermediate connector.

Q: Is the check result normal?

YES :

Go to Step 21.

NO :

Repair or replace the damaged connector.
Then go to Step 26.

CRUISE CONTROL

ENGINE AND EMISSION CONTROL

17-14

STEP 21. Check the harness wire between
engine-ECU connector C-103 terminal No.154
and clock spring connector C-306 terminal No.4,
and between clock spring connector C-310
terminal No.3 and cruise control switch
connector C-309 terminal No.2.

• Check harness wire for short circuit and damage.

Q: Is the check result normal?

YES :

Go to Step 22.

NO :

Repair or replace the damaged harness
wire. Then go to Step 26.

STEP 22. Check the clock spring.
Refer to GROUP 52B

− Driver’s, Front Passenger’s

Air Bag Module(s) and Clock Spring Inspection .

Q: Is the check result normal?

YES :

Go to Step 23.

NO :

Replace the clock spring [Refer to GROUP
52B

− Driver’s, Front Passenger’s Air Bag

Module(s) and Clock Spring ]. Then go to
Step 26.

STEP 23. Check the cruise control switch.
Refer to

P.17-32

.

Q: Is the check result normal?

YES :

Go to Step 24.

NO :

Replace the cruise control switch (Refer to

P.17-33

). Then go to Step 26.

STEP 24. 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 :

Replace the engine-ECU (Refer to GROUP
13A

− Engine-ECU ). Then go to Step 26.

STEP 25. Read the diagnosis code.
(1) Use the M.U.T.-III, erase the diagnosis code of

the cruise control system (Refer to

P.17-9

).

(2) Turn the ignition switch to the "ON" position, and

push the "ON/OFF" switch to turn the cruise
control system to ON (turn ON the cruise control
indicator lamp).

(3) After turning the cruise control system to ON,

when 2 minutes or more has elapsed without
operating the cruise control switches, use the
M.U.T.-III to read the diagnosis code of the cruise
control system (Refer to

P.17-9

).

Q: Is diagnosis code No.P1564 set?

YES :

Replace the engine-ECU (Refer to GROUP

13A

− Engine-ECU ). Then go to Step 26.

NO :

It can be assumed that this malfunction is
intermittent (Refer to GROUP 00

− How to

Use Troubleshooting/Inspection Service
Points, How to Cope with Intermittent
Malfunction ).

STEP 26. 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 27.

NO :

Return to Step 2.

STEP 27. Read the diagnosis code.
(1) Use the M.U.T.-III, erase the diagnosis code of

the cruise control system (Refer to

P.17-9

).

(2) Turn the ignition switch to the "ON" position, and

push the "ON/OFF" switch to turn the cruise
control system to ON (turn ON the cruise control
indicator lamp).

(3) After turning the cruise control system to ON,

when 2 minutes or more has elapsed without
operating the cruise control switches, use the
M.U.T.-III to read the diagnosis code of the cruise
control system (Refer to

P.17-9

).

Q: Is diagnosis code No.P1564 set?

YES :

Return to Step 1.

NO :

The procedure is complete.

CRUISE CONTROL

ENGINE AND EMISSION CONTROL

17-15

Code No.P1571: Malfunction of the stop lamp switch

ACB01743

23

FUSIBLE LINK

RELAY
BOX

STOP LAMP

STOP LAMP
SWITCH

ENGINE-ECU

NOTE

: LH drive vehicles
: RH drive vehicles

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 SI : Silver

Stop Lamp Switch System Circuit (EURO 5)