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Home >> Mitsubishi >> 2007 >> Outlander 4WD V6-3.0L (6B31) >> Repair and Diagnosis >> Cruise Control >> Testing and Inspection >> Symptom Related Diagnostic Procedures >> Inspection Procedure 4

Inspection Procedure 4

Inspection Procedure 4: Auto-cruise Control System cannot be Set.

COMMENT
The fail-safe function is probably canceling autocruise control system. In this case, checking the autocruise control system, MFI system, A/T system and CAN bus line system for diagnostic trouble codes. The scan tool MB991958 can also be used to check if the circuits of each input switch are normal or not by checking the input switch codes.

TROUBLESHOOTING HINTS (The most likely causes for this case:)
Malfunction of the CAN bus line system.
Malfunction of the MFI system.
Malfunction of the A/T system.
Malfunction of the auto-cruise control switch.
Malfunction of the stoplight switch.
Malfunction of the transmission range switch.
Malfunction of the ECM.

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




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.
2. Turn the ignition switch to the "ON" position.
3. Diagnose the CAN bus line.
4. Turn the ignition switch to the "LOCK" (OFF) position.
5. Disconnect scan tool MB991958.

Q: Is the check result satisfactory?

YES: Go to Step 2

NO: Repair the CAN bus lines (Refer to Diagnosis - CAN Bus Diagnostics Chart). Then go to Step 9.

STEP 2. Using scan tool MB991958, read the MFI system diagnostic trouble code.
1. Connect scan tool MB991958 to the data link connector..
2. Turn the ignition switch to the "ON" position.
3. Check for MFI system diagnostic trouble code (Refer to Diagnostic Function - How to Read and Erase Diagnostic Trouble Codes). Reading Diagnostic Trouble Codes
4. Turn the ignition switch to the "LOCK" (OFF) position.
5. Disconnect scan tool MB991958.

Q: Is any DTC set?

YES: Diagnose the MFI system (Refer to Diagnostic Trouble Code Chart). Then go to Step 9. Diagnostic Trouble Code Descriptions

NO: Go to Step 3.

STEP 3. Using scan tool MB991958, read the A/T system diagnostic trouble code.
1. Connect scan tool MB991958 to the data link connector.
2. Turn the ignition switch to the "ON" position.
3. Check for A/T system diagnostic trouble code (Refer to Automatic Transaxle Diagnosis - Diagnostic Function - How to Read and Erase Diagnostic Trouble Code).
4. Turn the ignition switch to the "LOCK" (OFF) position.
5. Disconnect scan tool MB991958.

Q: Is any DTC set?

YES: Diagnose the A/T system (Refer to Automatic Transaxle Diagnosis - Diagnostic Trouble Code Chart). Then go to Step 9.

NO: Go to Step 4.

STEP 4. Read the diagnostic trouble code. Read the auto-cruise control system diagnostic trouble code.

Q: Is DTC set?

YES: Diagnose the auto-cruise control system (Refer to Diagnostic Trouble Code Chart). Then go to Step 9.

NO: Go to Step 5.

STEP 5. Using scan tool MB991958, check the data list item 86: Main switch, item 92: Set switch, item 91: Resume switch and item 75: Cancel switch.

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.
2. Turn the ignition switch to the "ON" position.
3. Set scan tool MB991958 to data reading mode for auto-cruise control system.
Item 86: Main switch.
When "ON/OFF" switch is at the "ON" position, the display on scan tool MB991958 should be "ON".
When "ON/OFF" switch is at the "OFF" position, the display on scan tool MB991958 should be "OFF".
Item 92: Set switch.
When "COAST/SET" switch is at the "ON" position, the display on scan tool MB991958 should be "ON".
When "COAST/SET" switch is at the "OFF" position, the display on scan tool MB991958 should be "OFF".
Item 91: Resume switch.
When "ACC/RES" switch is at the "ON" position, the display on scan tool MB991958 should be "ON".
When "ACC/RES" switch is at the "OFF" position, the display on scan tool MB991958 should be "OFF".
Item 75: Cancel switch.
When "CANCEL" switch is at the "ON" position, the display on scan tool MB991958 should be "ON".
When "CANCEL" switch is at the "OFF" position, the display on scan tool MB991958 should be "OFF".

4. Turn the ignition switch to the "LOCK" (OFF) position.
5. Disconnect scan tool MB991958.

Q: Is the switch operating properly?

YES: Go to Step 6.

NO: Refer to Diagnostic Trouble Code Procedures - DTC 15: Auto-cruise Control Switch System. DTC 15Then go to Step 9.

STEP 6. Using scan tool MB991958, check the data list item 74: Brake light switch, item 290: Brake light switch.
1. Connect scan tool MB991958 to the data link connector.
2. Turn the ignition switch to the "ON" position.
3. Set scan tool MB991958 to data reading mode for auto-cruise control system.
Item 74, Brake light switch.
When the brake pedal is depressed, the display on scan tool MB991958 should be "ON".
When the brake pedal is released, the display on scan tool MB991958 should be "OFF".
Item 290, Brake light switch.
When the brake pedal is depressed, the display on scan tool MB991958 should be "ON".
When the brake pedal is released, the display on scan tool MB991958 should be "OFF".

4. Turn the ignition switch to the "LOCK" (OFF) position.
5. Disconnect scan tool MB991958.

Q: Is the switch operating properly?

YES: Go to Step 7.

NO: Refer to Diagnostic Trouble Code Procedures - DTC 22: Stoplight Switch System. DTC 15Then go to Step 9.

STEP 7. Using scan tool MB991958, check data list item 88: Neutral switch.
1. Connect scan tool MB991958 to the data link connector.
2. Turn the ignition switch to the "ON" position.
3. Set scan tool MB991958 to data reading mode for auto-cruise control system.
Item 88, Neutral switch.
When selector lever is at the "N" position, the display on scan tool MB991958 should be "ON".
When selector lever is other than "N" position, the display on scan tool MB991958 should be "OFF".

4. Turn the ignition switch to the "LOCK" (OFF) position.
5. Disconnect scan tool MB991958.

Q: Is the switch operating properly?

YES: Go to Step 8.

NO: Refer to Symptom Procedures - Inspection Procedure 2. Then go to Step 9. Inspection Procedure 2

STEP 8. Check the symptoms.

Q: Can auto-cruise control be set?

YES: It can be assumed that this malfunction is intermittent.

NO: Replace the ECM. When the ECM is replaced, register the encrypted code (Refer to Troubleshooting - ID Code Registration Necessity Judgment Table). Then go to Step 9.

STEP 9. Check the symptoms.

Q: Can auto-cruise control be set?

YES: The procedure is complete.

NO: Return to Step 1.
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