Inspection Procedure 11: When the "ON/OFF" Switch is Turned ON, "CRUISE" Indicator Light does not Illuminate (However, Cruise Control System is Normal.): Diagnosis

Required Special Tools:

MB991958: Scan Tool (M.U.T.-III Sub Assembly)
- MB991824: V.C.I.
- MB991827: M.U.T.-III USB Cable
- MB991910: M.U.T.-III Main Harness A

CAUTION: If there is any problem in the CAN bus lines, an incorrect diagnostic trouble code (DTC) may be set. Prior to this diagnosis, diagnose the CAN bus lines (Refer to TROUBLE CODE DIAGNOSIS ).

STEP 1. Using scan tool MB991958, diagnose the CAN bus line.
CAUTION: To prevent damage to scan tool MB991958, always turn the ignition switch to the "LOCK" (OFF) position before connecting or disconnecting scan tool MB991958.
1. Connect scan tool MB991958 to the data link connector (Refer to HOW TO ERASE DIAGNOSTIC TROUBLE CODES ).
2. Turn the ignition switch to the "ON" position.
3. Diagnose the CAN bus line (Refer to HOW TO ERASE DIAGNOSTIC TROUBLE CODES ).
Q: Is the check result satisfactory?
1. YES: Go to Step 2
2. NO: Repair the CAN bus lines (Refer to CAN BUS DIAGNOSTICS TABLE ). Then go to Step 6.
  
  Fig 1: Connecting Special Tool MB991910 To Data Link Connector
  Courtesy of MITSUBISHI MOTOR SALES OF AMERICA.
STEP 2. Using scan tool MB991958, check for MFI system DTC.
1. Connect scan tool MB991958 to the data link connector (Refer to HOW TO ERASE DIAGNOSTIC TROUBLE CODES ).
2. Turn the ignition switch to the "ON" position.
3. Check for MFI system DTC (Refer to DIAGNOSTIC FUNCTION ) < 2.0L ENGINE Non-turbo >, (Refer to DIAGNOSTIC FUNCTION ) < 2.0L ENGINE Turbo > or (Refer to DIAGNOSTIC FUNCTION ) < 2.4L ENGINE >.
Q: Is DTC U0141 set?
1. YES: Repair the MFI system (Refer to DTC U0141: ETACS-ECU CAN COMMUNICATION TIME OUT ) < 2.0L ENGINE Non-turbo >, (Refer to DTC U0141: ETACS-ECU CAN COMMUNICATION TIME OUT ) < 2.0L ENGINE Turbo > or (Refer to DTC U0141: ETACS-ECU CAN COMMUNICATION TIME OUT ) < 2.4L ENGINE >. Then go to Step 6.
2. NO: Go to Step 3.
STEP 3. Using scan tool MB991958, check for ETACS system DTC.
1. Connect scan tool MB991958 to the data link connector (Refer to HOW TO ERASE DIAGNOSTIC TROUBLE CODES ).
2. Turn the ignition switch to the "ON" position.
3. Check for ETACS system DTC (Refer to DIAGNOSTIC FUNCTION ).
Q: Is DTC U0155 set?
1. YES: Repair the ETACS system (Refer to DTC U0155: COMBINATION METER-ECU CAN COMMUNICATION TIME OUT ). Then go to Step 6.
2. NO: Go to Step 4.
STEP 4. Using scan tool MB991958, check the combination meter system actuator test item 7: Cruise indicator 1.
1. Connect scan tool MB991958 to the data link connector (Refer to HOW TO ERASE DIAGNOSTIC TROUBLE CODES ).
2. Turn the ignition switch to the "ON" position.
3. Set scan tool MB991958 to check the actuator test for combination meter system item 7: indicator 1 (Refer to CHECK AT ECU TERMINALS ).
Q: Is the check result satisfactory?
1. YES: Go to Step 5.
2. NO: Repair the combination meter system (Refer to INSPECTION PROCEDURE 5: THE COMBINATION METER LIGHT DOES NOT ILLUMINATE NORMALLY OR THE MULTI INFORMATION DISPLAY IS NOT DISPLAYED NORMALLY ). Then go to Step 6.
STEP 5. Check the symptoms.
Q: When the "ON/OFF" switch is turned ON, is the "CRUISE" indicator light illuminated?
1. YES: It can be assumed that this malfunction is intermittent (Refer to HOW TO COPE WITH INTERMITTENT MALFUNCTION ).
2. NO: Replace the ECM [Refer to ENGINE CONTROL MODULE (ECM) ] < 2.0L ENGINE Non-turbo >, [Refer to ENGINE CONTROL MODULE (ECM) ] < 2.0L ENGINE Turbo > or [Refer to ENGINE CONTROL MODULE (ECM) ] < 2.4L ENGINE >. When the ECM is replaced, register the encrypted code (Refer to ID registration procedure manual - ID codes registration judgement table) < Vehicle with WCM installed >. Then go to Step 6.
STEP 6. Check the symptoms.
Q: When the "ON/OFF" switch is turned ON, is the "CRUISE" indicator light illuminated?
1. YES: The procedure is complete.
2. NO: Return to Step 1.