Mitsubishi L200. Manual - part 229

CRUISE CONTROL

ENGINE AND EMISSION CONTROL

17-20

CHECK CHART FOR TROUBLE 
SYMPTOMS

M1172002301938

Trouble symptom

Inspection 
procedure No.

Reference page

Communication 
with M.U.T.-III is 
not possible.

Communication with the engine-ECU only 
is impossible.

−

GROUP 13A 

− 

Troubleshooting, 
Symptom Procedures, 
Inspection Procedure 1

When the brake pedal is depressed, cruise control is not 
cancelled.

1

P.17-20

When the clutch pedal is depressed, cruise control is not 
cancelled <M/T>.

2

P.17-21

When the select lever is set to "N" position, cruise control is 
not cancelled <A/T>.

3

P.17-23

When the "CANCEL" switch is pushed, cruise control is not 
cancelled.

4

P.17-24

Cruise control cannot be set (No response when the 
"COAST/SET" switch and the "ACC/RES" switch is pushed).

5

P.17-24

Hunting (repeated acceleration and deceleration) occurs at 
the set vehicle speed.

6

P.17-26

When the "ON/OFF" switch is turned ON, the cruise control 
indicator lamp does not illuminate (However, the cruise 
control system is normal).

7

P.17-27

SYMPTOM PROCEDURES

Inspection Procedure 1: When the Brake Pedal is Depressed, Cruise Control is not Cancelled.

COMMENT ON TROUBLE SYMPTOM
The stop lamp switch circuit is suspected.

PROBABLE CAUSE

• Damaged harness or connector.

• Malfunction of the stop lamp switch.

• 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 134: Brake switch

• Item 135: Stop lamp switch

Q: Is the check result normal?

YES : 

Go to Step 2.

NO : 

Check the stop lamp switch system (Refer 
to 

P.17-15

 

− Diagnosis Code Procedures, 

Code No.P1571: Malfunction of the stop 
lamp switch system). Then go to Step 3 .

STEP 2. Check the symptom.

Q: When the brake pedal is depressed, is the cruise 

control cancelled?
YES : 

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 ).

NO : 

Replace the engine-ECU (Refer to GROUP 
13A 

− Engine-ECU ). Then go to Step 3.

CRUISE CONTROL

ENGINE AND EMISSION CONTROL

17-21

STEP 3. Check the symptom.

Q: When the brake pedal is depressed, is the cruise 

control cancelled?

YES : 

The procedure is complete.

NO : 

Return to Step 1.

Inspection Procedure 2: When the Clutch Pedal is Depressed, Cruise Control is not Cancelled <M/T>.

ACA01419

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

CLUTCH 
SWITCH

ENGINE-ECU

Clutch 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

ACA01405

Connector: C-152 <LH drive vehicles>

AC

C-152

ACA01406 AC

C-152

Connector: C-152 <RH drive vehicles>

CRUISE CONTROL

ENGINE AND EMISSION CONTROL

17-22

OPERATION

• The engine-ECU connector C-103 terminal 

No.112 monitor the clutch switch state.

• The clutch switch turn ON/OFF when the clutch 

pedal is depressed/released, and the input signal 
to the engine-ECU change. According to this 
change, the engine-ECU judges the clutch switch 
status.

COMMENT ON TROUBLE SYMPTOM
The cause is probably a malfunction of the clutch 
switch circuit.

POSSIBLE CAUSES

• Damaged harness or connector.

• Malfunction of the clutch switch.

• 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 131: Clutch switch

Q: Is the check result normal?

YES : 

Go to Step 6.

NO : 

Go to Step 2.

STEP 2. Connectors check: C-103 engine-ECU 
connector and C-152 clutch switch connector.

Q: Is the check result normal?

YES : 

Go to Step 3.

NO : 

Repair or replace the damaged connector. 
Then go to Step 7.

STEP 3. Check the harness wire between engine-
ECU connector C-103 terminal No.112 and clutch 
switch connector C-152 terminal No.1, and 
between clutch switch connector C-152 terminal 
No.2 and earth.

• Check harness wire for open/short circuit and 

damage.

Q: Is the check result normal?

YES : 

Go to Step 4.

NO : 

Repair or replace the damaged harness 
wire. Then go to Step 7.

STEP 4. Check the clutch switch.
Refer to GROUP 21A 

− Clutch Pedal, Inspection, 

Clutch Switch Continuity Check .

Q: Is the check result normal?

YES : 

Go to Step 5.

NO : 

Replace the clutch switch (Refer to GROUP 
21A 

− Clutch Pedal ). Then go to Step 7.

STEP 5. Check the data list
Using M.U.T.-III, check the data list (Refer to 

P.17-29

 

− data list reference table).

• Item 131: Clutch switch

Q: Is the check result normal?

YES : 

Go to Step 6.

NO : 

Replace the engine-ECU (Refer to GROUP 
13A 

− Engine-ECU ). Then go to Step 7.

STEP 6. Check the symptom.

Q: When the clutch pedal is depressed, is the cruise 

control cancelled?
YES : 

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 ).

NO : 

Replace the engine-ECU (Refer to GROUP 
13A 

− Engine-ECU ). Then go to Step 7.

STEP 7. Check the symptom.

Q: When the clutch pedal is depressed, is the cruise 

control cancelled?
YES : 

The procedure is complete.

NO : 

Return to Step 1.

CRUISE CONTROL

ENGINE AND EMISSION CONTROL

17-23

Inspection Procedure 3: When the Selector Lever is Set to "N" Position, Cruise Control is not 
Cancelled <A/T>.

OPERATION
When the selector lever is operated, the selector 
lever position signal from the inhibitor switch is sent 
to the A/T-ECU. Engine-ECU receives the selector 
lever position signal from the A/T-ECU via the CAN 
bus line.

COMMENTS ON TROUBLE SYMPTOM

• The inhibitor switch circuit is suspected.

• The CAN bus line between the engine-ECU and 

the A/T-ECU, the A/T-ECU, the engine-ECU may 
be defective.

PROBABLE CAUSES

• Malfunction of CAN bus system.

• Damaged harness or connector.

• Malfunction of the inhibitor switch.

• Malfunction of the A/T-ECU.

• Malfunction of the engine-ECU.

DIAGNOSIS PROCEDURE

CAUTION

• If there is any problem in the CAN bus lines, 

an incorrect diagnosis code may be set. Prior 
to this diagnosis, diagnose the CAN bus 
lines.

• Before replacing the ECU, ensure that the 

CAN bus lines is normal.

STEP 1. Check the CAN bus system diagnosis.
Using M.U.T.-III, perform CAN bus diagnosis (Refer 
to GROUP 54C 

− Explanation About The M.U.T-III 

Can Bus Diagnostics ).

Q: Is the check result satisfactory?

YES : 

Go to Step 2.

NO : 

Repair the CAN bus lines (Refer to GROUP 
54C 

− Troubleshooting, Can Bus Diagnostic 

Table ). Then go to Step 5.

STEP 2. Check the data list.
Using M.U.T.-III, check the data list (Refer to 

P.17-29

 

− data list reference table).

• Item 42: Inhibitor switch

Q: Is the check result normal?

YES : 

Go to Step 3.

NO : 

Check the inhibitor switch system [Refer to 
GROUP 23A 

− Troubleshooting, Diagnosis 

Code Procedures Code No.P1770: Inhibitor 
switch system (Open Circuit)  or , Code 
No.P1771: Inhibitor switch system (Short 
Circuit) ] <4A/T> or [Refer to GROUP 23A 

− 

Troubleshooting, Diagnosis Code 
Procedures Code No.P1770: Inhibitor 
switch system (Open Circuit)  or , Code 
No.P1771: Inhibitor switch system (Short 
Circuit) ] <5A/T>. Then go to Step 5.

STEP 3. Check the A/T system diagnosis code.
Using M.U.T.-III, perform A/T system diagnosis code 
(Refer to GROUP 23A 

− Troubleshooting, Diagnosis 

Function ).

Q: Is any diagnosis code set?

YES : 

Repair the A/T system (Refer to GROUP 

23A 

− Troubleshooting, Diagnosis Code 

Chart ). Then go to Step 5.

NO : 

Go to Step 4.

STEP 4. Check the symptom.

Q: When the selector lever is set to "N" position, is 

the cruise control cancelled?
YES : 

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 ).

NO : 

Replace the engine-ECU (Refer to GROUP 
13A 

− Engine-ECU ). Then go to Step 5.

STEP 5. Check the symptom.

Q: When the selector lever is set to "N" position, is 

the cruise control cancelled?
YES : 

The procedure is complete.

NO : 

Return to Step 1.