Lancer Sportback L4-2.4L (4B12) (2010)
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YES : Go to Step 2.
NO : Repair the CAN bus lines (Refer to Diagnosis - Can Bus Diagnostic Chart.) See: Powertrain Management/Computers and Control
Systems/Information Bus/Testing and Inspection/Scan Tool Testing and Procedures/CAN Bus Diagnostics Table Then go to Step 6.
STEP 2. Using scan tool MB991958, check the CVT system data list item 49: Transmission range switch.
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 CVT system (Refer to Diagnosis - Diagnostic Function.) See: Transmission and
Drivetrain/Continuously Variable Transmission/Transaxle/Testing and Inspection/Initial Inspection and Diagnostic Overview
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Item 49: Transmission range switch.
Q: Is the switch operating properly?
YES : Go to Step 3.
NO : Repair the CVT system (Refer to Diagnosis, Diagnostic Trouble Code Procedures - DTC P0705: Malfunction of Transmission Range
Switch.) See: Powertrain Management/Computers and Control Systems/Testing and Inspection/Diagnostic Trouble Code Tests and Associated
Procedures/P Code Charts/P0705 Then go to Step 6.
STEP 3. Using scan tool MB991958, read the CVT system DTC.
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. Check for CVT system DTC (Refer to Diagnosis - Diagnostic Function.) See: Transmission and Drivetrain/Continuously Variable
Transmission/Transaxle/Testing and Inspection/Initial Inspection and Diagnostic Overview
Q: Is any DTC set?
YES : Repair the CVT system (Refer to Diagnosis - Diagnostic Trouble Code Chart.) See: Powertrain Management/Computers and Control
Systems/Testing and Inspection/Diagnostic Trouble Code Descriptions/Continuously Variable Transaxle (CVT) Then go to Step 6.
NO : Go to Step 4.
STEP 4. Using scan tool MB991958, check data list item 88: Neutral switch.
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 5.
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 6.
STEP 5. Check the symptoms.
Q: When the selector lever is moved to "N" position, is the cruise control cancelled?
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 6.
