Mitsubishi L200. Manual - part 230
CRUISE CONTROL
ENGINE AND EMISSION CONTROL
17-24
Inspection Procedure 4: When the "CANCEL" Switch is Pushed, Cruise Control is not Cancelled.
COMMENT ON TROUBLE SYMPTOM
The cause is probably an open-circuit in the circuit
inside the "CANCEL" switch.
PROBABLE CAUSE
• Malfunction of the cruise control 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
− data list reference table).
• Item 137: "CANCEL" switch
Q: Is the check result normal?
YES :
Go to Step 2.
NO :
Check the cruise control switch system
(Refer to
− Diagnosis Code
Procedures, Code No.P1564: Abnormal
voltage at cruise control switch. Then go to
Step 3 .
STEP 2. Check the symptom.
Q: When the "CANCEL" switch is pushed, 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
Malfunctions ).
NO :
Replace the engine-ECU (Refer to GROUP
13A
− Engine-ECU ). Then go to Step 3.
STEP 3. Check the symptom.
Q: When the "CANCEL" switch is pushed, is the
cruise control cancelled?
YES :
The procedure is complete.
NO :
Return to Step 1.
Inspection Procedure 5: Cruise Control cannot be Set (No Response when the "COAST/SET" Switch
and the "ACC/RES" Switch is Pushed).
COMMENTS ON TROUBLE SYMPTOM
The fail-safe function is probably cancelling cruise
control system. In this case, checking the cruise con-
trol system, diesel fuel system, CAN bus system, A/T
system <A/T> and ASTC system diagnosis codes.
The M.U.T.-III can also be used to check if the cir-
cuits of each input switches are normal or not by
checking the data list.
NOTE: Push the cruise control switches one by one
securely. Otherwise, the cruise control system may
not be started.
PROBABLE CAUSE
• Malfunction of CAN bus system.
• Malfunction of the diesel fuel system.
• Malfunction of the A/T system <A/T>.
• Malfunction of the ASTC system.
• Malfunction of the cruise control switch.
• Malfunction of the stop lamp switch.
• Malfunction of the clutch switch <M/T>.
• Malfunction of the inhibitor switch <A/T>.
• 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 11.