INSPECTION PROCEDURE 6: Auto-cruise Control cannot be Set.: Diagnosis

WARNING: This page is about a different car, the 2004 Mitsubishi Eclipse. However, it is still accessible from the selected car via links, so may be relevant.

Required Special Tools:

MB991958: Scan Tool (MUT-III sub assembly)
- MB991824: Vehicle Communication Interface
- MB991827: MUT-III USB Cable
- MB991911: MUT-III Main Harness B
MB991223: Harness Set

Can the auto-cruise control-ECU communicate with scan tool MB991958?
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. Using scan tool MB991958.
2. Connect scan tool MB991958 to the data link connector.
  
  Fig 1: Connecting Scan Tool To Data Link Connector
  Courtesy of MITSUBISHI MOTOR SALES OF AMERICA.
3. Turn the ignition switch to the "ON" position.
Q: Can the auto-cruise control-ECU communicate with the scan tool?

YES : Go to Step 2.

NO : Inspect each trouble symptom. (Refer to Inspection Procedure number INSPECTION PROCEDURE 1: COMMUNICATION WITH SCAN TOOL MB991958 IS NOT POSSIBLE (COMMUNICATION WITH THE AUTO-CRUISE CONTROL-ECU ONLY IS NOT POSSIBLE.) .)
Is any diagnostic trouble code output?
Q: Is any diagnostic trouble code output?

YES : Diagnostic trouble code number 11, 12, 14, 15, 16 or 17 is output, refer to the following. (Code number 11 DTC 11: AUTO-CRUISE VACUUM PUMP DRIVE SYSTEM .) (Code number 12 DTC 12: VEHICLE SPEED SIGNAL SYSTEM < M/T> .) < M/T> (Code number 12 DTC 12: VEHICLE SPEED SIGNAL SYSTEM < A/T> .) < A/T> (Code number 14 DTC 14 : STOPLIGHT SWITCH SYSTEM .) (Code number 15 DTC 15 : AUTO-CRUISE CONTROL SWITCH SYSTEM .) (Code number 16 DTC 16: AUTO-CRUISE CONTROL-ECU .) (Code number 17 DTC 17: THROTTLE POSITION SENSOR AND IDLE POSITION SIGNAL SYSTEM .) Then check that the malfunction is eliminated.

NO : Go to Step 3.
Using scan tool MB991958, check data list.
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. Using scan tool MB991958.
2. Connect scan tool MB991958 to the data link connector.
  
  Fig 2: Connecting Scan Tool To Data Link Connector
  Courtesy of MITSUBISHI MOTOR SALES OF AMERICA.
3. Check the following items in the data list. Refer to DATA LIST REFERENCE TABLE .
  - Item 04: Auto-cruise control "CANCEL" switch.
  - Item 05: Stoplight switch.
  - Item 14: Clutch pedal position switch. < M/T>.
  - Item 14: Transmission range switch. < A/T>
4. Turn the ignition switch to the "ON" position.
Q: Is the check above meet the specifications?

YES : Check that the malfunction is eliminated. If the malfunction is not eliminated, replace the auto-cruise control-ECU. (Refer to AUTO-CRUISE CONTROL .) Then that the malfunction is eliminated.

NO : Follow the diagnostic trouble code procedures and the symptom procedures below. Item 04: Refer to DTC 15 : AUTO-CRUISE CONTROL SWITCH SYSTEM . Item 05: Refer to INSPECTION PROCEDURE 2: WHEN THE BRAKE PEDAL IS DEPRESSED, AUTO-CRUISE CONTROL IS NOT CANCELLED. . Item 14: Refer to INSPECTION PROCEDURE 3: WHEN THE CLUTCH PEDAL IS DEPRESSED, AUTO-CRUISE CONTROL IS NOT CANCELLED. < M/T> . Item 14: Refer to INSPECTION PROCEDURE 4: WHEN THE SELECTOR LEVER IS MOVED TO "N" RANGE, AUTO-CRUISE CONTROL IS NOT CANCELLED. < A/T> .