Lancer Sportback L4-2.4L (4B12) (2010)
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(M.U.T.-Iii.)
2. Turn the ignition switch to the "ON" position.
3. Set scan tool MB991958 to data reading mode for cruise control system. See: Reading and Clearing Diagnostic Trouble Codes/How to Connect
the Scan Tool (M.U.T.-Iii.)
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Item 78: Clutch switch.
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When the clutch pedal is depressed, the display on scan tool MB991958 should be "ON."
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When the clutch pedal is released, the display on scan tool MB991958 should be "OFF."
Q: Is the switch operating properly?
YES : Go to Step 10.
NO : Repair the clutch switch system (Refer to Symptom Procedures - Inspection Procedure 2.) See: Symptom Procedures/Inspection Procedure
2 Then go to Step 11.
STEP 9. Using scan tool MB991958, check data list item 88: Neutral switch [CVT.]
1. Connect scan tool MB991958 to the data link connector. See: Reading and Clearing Diagnostic Trouble Codes/How to Connect the Scan Tool
(M.U.T.-Iii.)
2. Turn the ignition switch to the "ON" position.
3. Set scan tool MB991958 to data reading mode for cruise control system. See: Reading and Clearing Diagnostic Trouble Codes/How to Connect
the Scan Tool (M.U.T.-Iii.)
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Item 88: Neutral switch.
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When selector lever is at the "P" and "N" position, the display on scan tool MB991958 should be "ON."
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When selector lever is other than "P" and "N" position, the display on scan tool MB991958 should be "OFF."
Q: Is the switch operating properly?
YES : Go to Step 10.
NO : Repair the transmission range switch system (Refer to Symptom Procedures - Inspection Procedure 3.) See: Symptom Procedures/Inspection
Procedure 3 Then go to Step 11.
STEP 10. Check the symptoms.
Q: Can 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 Diagnosis - ID Code Registration Judgment Table.)
See: Body and Frame/Body Control Systems/Testing and Inspection/Scan Tool Testing and Procedures/ID Codes Registration Judgment Table
Then go to Step 11.
STEP 11. Check the symptoms.
Q: Can cruise control be set?
YES : The procedure is complete.
NO : Return to Step 1.
Inspection Procedure 8
Inspection Procedure 8: Hunting (Repeated Acceleration And Deceleration) Occurs At The Set Vehicle Speed [M/T.]
COMMENT
The vehicle speed sensor or the throttle body is suspected.
TROUBLESHOOTING HINTS (THE MOST LIKELY CAUSES FOR THIS CASE:)
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Malfunction of the MFI system.
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Malfunction of the vehicle speed sensor.
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Malfunction of the throttle body.
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Malfunction of the ECM.
DIAGNOSTIC PROCEDURE