Inspection Procedure 8: When the "ON/OFF" Switch is Turned ON, the Cruise Control Indicator Lamp does not Illuminate (However, the Cruise Control System is Normal).

OPERATION

The engine-ECU <M/T> or engine-A-M/T-ECU <Automated manual transmission> detects "ON/OFF" switch ON signal to illuminate the cruise control indicator lamp within the combination meter.
The cruise control indicator lamp illuminate signal is transmitted from the engine-ECU <M/T> or engine-A-M/T-ECU <Automated manual transmission> to the combination meter via CAN bus line.

COMMENTS ON TROUBLE SYMPTOM

The CAN bus line between the engine-ECU <M/T> or engine-A-M/T-ECU <Automated manual transmission> and the combination meter may be defective.
The combination meter, engine-ECU <M/T> or engine-A-M/T-ECU <Automated manual transmission> may also be defective.

PROBABLE CAUSES

Malfunction of CAN bus system.
Damaged harness or connector.
Malfunction of the combination meter.
Malfunction of the engine-ECU <M/T>.
Malfunction of the engine-A-M/T-ECU <Automated manual transmission>.

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?

	Go to Step 2.

	Repair the CAN bus lines (Refer to GROUP 54C - Troubleshooting, Can Bus Diagnostic Table ). Then go to Step 6.

STEP 2. Check the MPI system diagnosis code.

Using M.U.T.-III, perform MPI system diagnosis code (Refer to GROUP 13B - Troubleshooting, Diagnosis Function

) <135, 4A9> or (Refer to GROUP 13C - Troubleshooting, Diagnosis Function

) <4G1>.

Q. Is diagnosis code No.U0108 set?

	Repair the MPI system (Refer to GROUP 13B - Troubleshooting, Diagnosis Code Procedures, Code No.U0108: Combination Meter Time-out ) <135, 4A9> or (Refer to GROUP 13C - Troubleshooting, Diagnosis Code Procedures, Code No.U0108: Combination Meter Time-out ) <4G1>. Then go to Step 6 .

	Go to Step 3.

STEP 3. Check the combination meter system diagnosis code.

Using M.U.T.-III, perform combination meter system diagnosis code (Refer to GROUP 54A - Combination Meter, Troubleshooting, Diagnosis Function

Q. Is any diagnosis code set?

	Repair the combination meter system (Refer to GROUP 54A - Combination Meter, Troubleshooting, Diagnosis Code Chart ) <COLT> or (Refer to GROUP 54A - Combination Meter, Troubleshooting, Diagnosis Code Chart ) <COLT CZ3>. Then go to Step 6.

	Go to Step 4.

STEP 4. Check the combination meter system actuator test table.

Using M.U.T.-III, check the combination meter system data list (Refer to GROUP 54A - Combination Meter, Troubleshooting, Actuator Test Table

Item 20: Indicator lamp1

Q. Is the check result normal?

	Go to Step 5.

	Repair the combination meter system (Refer to GROUP 54A - Combination Meter, Troubleshooting, Symptom Procedures, Inspection Procedure 5 ) <COLT> or (Refer to GROUP 54A - Combination Meter, Troubleshooting, Symptom Procedures, Inspection Procedure 5 ) <COLT CZ3>. Then go to Step 6 .

STEP 5. Retest the system.

Q. When the "ON/OFF" switch is turned ON, is the cruise control indicator lamp illuminated ?

	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 ).

Replace the engine-ECU <M/T> or engine-A-M/T-ECU <Automated manual transmission> (Refer to GROUP 13B - Engine-ECU, engine-A-M/T-ECU

) <135, 4A9> or (Refer to GROUP 13C - Engine-ECU

) <4G1>. When the engine-ECU <M/T> or engine-A-M/T-ECU <Automated manual transmission> is replaced, register the encrypted code (Refer to GROUP 54A - Ignition Switch, Encrypted Code Registration Criteria Table

). Then go to Step 6.

STEP 6. Retest the system.

Q. Does the cruise control indicator lamp illuminate when the "ON/OFF" switch is turned ON?

	The procedure is complete.

	Return to Step 1.