Wireless Control Module (Wcm) - Lancer Evolution: Other Mitsubishi Lancer X

Main components and functions

MAIN COMPONENTS AND FUNCTIONS

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Note. In case of replacement of WCM, all keyless ID, key ID and tire pressure sensor ID should be re-registered using scan tool MB991958 (M.U.T.-III sub-assembly).

CHECK OF FREEZE FRAME DATA

The freeze frame data can be checked by using scan tool MB991958 (M.U.T.-III sub assembly).

When detecting fault and storing the diagnosis code, the ECU connected to CAN bus line obtains the data before the determination of the diagnosis code and the data when the diagnosis code is determined, and then stores the ECU status of that time. By analysing each data from scan tool MB991958 (M.U.T.-III sub assembly), the troubleshooting can be performed more efficiently. The displayed items are as the table below.

Display item list

DISPLAY ITEM LIST

ID CODES REGISTRATION JUDGMENT TABLE

The transponder (a small transmitter) in the ignition key, WCM, and the ECM have their own ID codes stored in them. When the cases listed in the table below occur, the ID codes must be registered in the WCM or ECM again.

Note. Up to eight ignition keys (key ID and keyless entry secret code) can be stored in the memory of WCM.

ID CODES REGISTRATION JUDGMENT TABLE

SUPPLY UNIT LIST FOR INDIVIDUAL KEY

SUPPLY UNIT LIST FOR INDIVIDUAL KEY Ignition key

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KEY SUPPLY UNIT LIST FOR OTHER THAN INDIVIDUAL KEY

KEY SUPPLY UNIT LIST FOR OTHER THAN INDIVIDUAL KEY Full service key set Handle lock service key set Door service key set NOTE: Key (It is the key that comes with the door service key set. It can only be used for locking and unlocking, and it cannot start the engine.)

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Registration flow chart

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WARNINGS/ALARMS

If the TPMS fails or the tire pressure is low, the WCM warns the driver of that state by the TPMS warning light and the multi information display in the combination meter.

WARNING OPERATIONS AND WARNING CANCELLATION CONDITIONS REFERENCE Display contents Item State Warning operations Warning cancellation conditions (Cancels warning operations when one of the conditions met) TPMS warning light Multi information display Not displayed TPMS warning light bulb open circuit check The ignition switch is turned from "LOCK" (OFF) to "ON". Illuminates for 3 seconds. - 3 seconds have passed after the TPMS warning light is lit. Tire pressure alarm The received tire pressure value is under the alarm ON threshold value. Illuminates. Symbol and "LOW TIRE PRESSURE" is displayed. The received tire pressure value is over the alarm OFF threshold value. TPMS failure warning ID not stored The TPMS transmitter ID is not registered in the WCM. Flashes (1) Symbol and "SERVICE REQUIRED" is displayed. ID is registered normally. Defective EEPROM Abnormality of data in the EEPROM of the WCM is detected. Data in the EEPROM of the WCM is checked to be normal. Problem in signal reception The signals from TPMS transmitters cannot be received while driving for about 20 minutes. The signal from the TPMS transmitter that was warned is received. Defective sensor The sensor failure signal is received from the TPMS transmitter. A normal signal is received from the TPMS transmitter that was warned. The battery voltage of the TPMS transmitter is low. The reception problem warning is activated because of the low battery voltage of the TPMS transmitter. The signal of normal battery voltage is received from the TPMS transmitter that was warned. Vehicle speed input problem The vehicle speed is not input. The vehicle speed is input. Abnormal vehicle speed value The vehicle speed value is abnormal. The normal vehicle speed value is received. (1) Change to continuous illumination after flashing for about 1 minute

JUDGMENT CRITERIA

With the global coding counter value "0," if all the global coding data (vehicle information) are not stored, the WCM determines that a problem has occurred.

PROBABLE CAUSES

1. Malfunction of ETACS-ECU
2. Engine control module malfunction
3. ETACS-ECUs have been interchanged between two vehicles.
4. WCM malfunction
5. External noise interference
6. WCMs have been interchanged between two vehicles.

DATA LIST REFERENCE TABLE

DATA LIST REFERENCE TABLE

INPUT SIGNAL REFERENCE TABLE

INPUT SIGNAL REFERENCE TABLE

Signals from transmitter switches are not received

KEY SUPPLY UNIT LIST FOR OTHER THAN INDIVIDUAL KEY Full service key set Handle lock service key set

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KEY SUPPLY UNIT LIST FOR OTHER THAN INDIVIDUAL KEY Door service key set NOTE: Key (It is the key that comes with the door service key set. It can only be used for locking and unlocking, and it cannot start the engine.) NOTE: When re-registering the key (key ID and keyless ID), all the keys (key ID and keyless ID) registered before must be re-registered because all of them will be erased. If the registration fails, repeat from the start. After registering the keys, make sure that the engine is started normally with all of the keys registered

Screen flow of scan tool MB991958(M.U.T.-III sub assembly)

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Connect the scan tool to the 16-pin data link connector as follows.

Note. For details on how to use the scan tool, refer to the " ".

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1. Start the scan tool MB991958 system on the personal computer and turn the ignition switch to the "ON" position.
2. Select "F.A.S.T./IMMO/Keyless/TPMS" button from the "System Select" screen. Then, select the applicable option code item and push the OK button.
3. Select "Special Function" on the next screen.
4. Select the button of the operation to be performed from the "Special Function" screen. "Key Registration": When the ignition key is replaced or added as a single unit and/or the WCM replaced. "Additional key registration": When the ignition key is added as a single unit. "Key Registration (Barcode No.)": When the ignition key is replaced by the full service key set, the handle lock service key set, immobi and keyless key assembly or immobilizer key assembly is replaced by the piece. "Keyless ID Reg.": When the ignition key is replaced or added as a single unit and the immobi and keyless key assembly. "Tire Pressure Sensor ID Registration": When the TPMS transmitter is replaced and/or the WCM is replaced. "Tire Pressure Sensor Check": When the tire pressure sensor data is checked. "Tire Pressure Sensor ID Check": When the tire pressure sensor ID is checked. NOTE: For "ENG Key Code & VIN Reg," refer to «PRECAUTIONS BEFORE SERVICE»(ref-289379-S21926410022008063000000) .
5. After operation check, turn the ignition switch to the "LOCK" (OFF) position.
6. Remove the scan tool MB991958.

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1. When "Key registration" or "Additional key registration" screen is displayed, enter the password for the key registration and press the OK button. Then, "Executing!" is displayed and the registration process starts. NOTE: If the wrong password is entered consecutively 5 times, the password entry for the key registration will be disabled for 16 minutes. The key registration cannot be cancelled during the operation.
2. When the key registration is completed, "Completed" is displayed. To register the next key, follow the message on the screen and press the OK button. Then, "Executing!" is displayed again and the registration process for the next key starts. To finish the key registration, press the cancel button. NOTE: In order to register another key consecutively after registering the first key, the ignition switch must be turned to the ON position with the second key within 30 seconds after turning it to the "LOCK" (OFF) position with the first key. Up to eight keys can be registered. When the key cannot be registered using scan tool MB991958, refer to " «INSPECTION PROCEDURE 2: THE IGNITION KEY CANNOT BE REGISTERED USING SCAN TOOL.»(ref-289390-S13215693902008063000000) " .

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1. When "Key Registration (Barcode No.)" screen is displayed, enter the password for the key registration and press the OK button. NOTE: If the wrong password is entered consecutively 5 times, the password entry for the key registration will be disabled for 16 minutes.
2. Follow the message on the screen to enter the bar code No., and then press the OK button.
3. When "Do you want to start registration?" is displayed, press the OK button to start the registration, or press the Cancel button to cancel the registration.
4. "Key Registration was completed" is displayed. Press the OK button to finish the registration. NOTE: When the key cannot be registered using scan tool MB991958, refer to " «INSPECTION PROCEDURE 2: THE IGNITION KEY CANNOT BE REGISTERED USING SCAN TOOL.»(ref-289390-S13215693902008063000000) " .

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1. On the "Keyless ID Reg." screen, enter the password and press the OK button.
2. Register within 1 minute and send the programming packet* to register the keyless ID. To register multiple keys, register the next key within 1 minute from the registration operation of previous key. Complete the registration of necessary keys, then press the OK button to finish the keyless ID registration. NOTE: Up to eight ignition keys can be registered. *: Programming packet sending procedure Complete the following steps 1 to 3 within four seconds. Press and hold both the lock and the unlock switch for 1 second or longer. Release both the lock and the unlock switch for 0.5 second or longer. Press the unlock switch.
3. Push the OK button after "Keyless ID Registration was finished." is displayed.
4. Check number of the keyless IDs registered.

"TIRE PRESSURE SENSOR ID REGISTRATION" METHOD

1. Select "4tires ID Reg. (Change tire PRS.)" and start the tire pressure sensor ID registration. CAUTION: Register all tire pressure sensor IDs within twenty minutes.
2. "4 SNSR ID Registration Do you want to start? Note Finish ID Registration within 20 minutes." is displayed. Then, press "OK". NOTE: If the ID code registration is not finished within 20 minutes, all the ID codes registered in the TPMS transmitter before will be erased. For this reason, the ID codes need to be registered again.
3. Decrease the tire pressure to 174 kPa (25.2 psi) or less by changing 20 kPa (2.9 psi) or more, and register the TPMS transmitter ID code of each wheel to WCM. NOTE: You can start out the operations from any TPMS transmitter. The tire pressure sensor ID registration has no order. On completion of the TPMS transmitter ID code registration, the TPMS transmitter ID code is displayed on the M.U.T.-III screen. M.U.T.-III cannot identify which registered TPMS transmitter is used for each wheel. For this reason, write down the tire number for each wheel when the tire number and ID code is displayed on the scan tool during ID code registration. It may take approximately one minute for the ID code to be displayed on the M.U.T.-III screen after the tire pressure is reduced. If the ID code is not displayed, reduce the tire pressure another 20 kPa (2.9 psi) or more. If the ID code is not displayed yet, rotate the tire to displace the TPMS transmitter, and reduce the tire pressure 20 kPa (2.9 psi) or more again. If the ID code cannot be registered for all the four wheels, the wiring harness or connector between the reciever antenna assembly and the WCM, the reciever antenna assembly or the WCM may be faulty. In this case, check DTC as DTC from WCM may be set. (Refer to «DIAGNOSTIC TROUBLE CODE CHART»(ref-289390-S05350514502008063000000) .) If the ID code can be registered for one wheel or more, the TPMS transmitter in which the code cannot be registered may be faulty, thus replace that TPMS transmitter.
4. "4 SNSR ID Registration Completed." is displayed. Then, select "OK". NOTE: The TPMS indicator illuminates for tire pressure alarm.
5. After one minute or more has passed, correct the tire pressure for all wheels with ignition switch "ON".
6. Check the data list "Registered ID reception, Tire 1, 2, 3, 4" if "YES" is displayed for each tire. When "NO" is displayed, drive the vehicle for approximately 5 minutes, check the display again. If "NO" is still displayed, register the ID code again.

"TPMS TRANSMITTER CHECK" METHOD

According to the following procedures, identify which registered TPMS transmitter corresponds to which wheel, and check the tire pressure and acceleration value of each TPMS transmitter.

1. Check the data list "Air Pressure, Tire1, 2, 3, 4" and write down the tire pressure for all wheels. NOTE: The display at this time is the data received most recently.
2. Perform the following procedures for four wheels in order, identify the wheel by checking the tire pressure of each wheel. Change the pressure of tire for 20 kPa (2.9 psi) or more so that the TPMS transmitter sends the latest sensor data (The tire pressure can either be decreased or increased). Check the data list screen to determine which tire number corresponds to the wheel whose tire pressure has changed. NOTE: It may take approximately one minute that the data of tire pressure change is displayed on the M.U.T.-III screen. If the data of tire pressure change is not displayed on the M.U.T.-III screen, the most possible cause is that the radio wave sent from the TPMS transmitter cannot be received. In this case, the radio wave may be received by performing the procedures from (1) again after turning the tire to change the TPMS transmitter position. If the tire pressure change is still not displayed on the M.U.T.-III screen, the TPMS transmitter in which the ID code is not registered may be installed, or the TPMS transmitter may be faulty. Therefore, perform ID code registration or replace the TPMS transmitter according to the instructions of troubleshooting for DTCs. (At this time, do not register the ID codes or replace the TPMS transmitter.)
3. Check the tire pressure or acceleration value shown in the screen (if needed).
4. After checking by the tire pressure change, adjust the checked tire pressure to the proper value.

"TIRE PRESSURE SENSOR ID CHECK" METHOD

1. Select "Tire Pressure Sensor ID Check".
2. Check the registered TPMS transmitter IDs on the M.U.T.-III screen.

TPMS TRANSMITTER CHECK

Refer to ID CODES REGISTRATION PROCEDURE .

TPMS TRANSMITTER ID CHECK

Refer to ID CODES REGISTRATION PROCEDURE .

KEYLESS ENTRY SYSTEM CHECK

Check the keyless entry system as described below. If it does not work, perform troubleshooting. Refer to TROUBLE SYMPTOM CHART .

1. Operate the transmitter to check that the doors can be locked and unlocked.
2. Operate the transmitter to check that the answerback function works in response to doors locking/unlocking. NOTE: The hazard answerback setting can be changed using the customization function. Confirm which setting is activated before performing these checks. Refer to «CUSTOMIZATION FUNCTION»(ref-289390-S01623064942008063000000) .

CUSTOMIZATION FUNCTION

By operating the ETACS system or MMCS of scan tool MB991958, the following functions can be programmed. The programmed information is held even when the battery is disconnected.

CUSTOMIZATION FUNCTION REFERENCE

TRANSMITTER BATTERY CHECK

Measure the voltage of the battery. If the voltage of the battery is lower than the standard value, replace the battery.

Standard value: 2.5 - 3.2 V

>> C << TIRE PRESSURE INFLATION/NUT RETIGHTENING

Inflate tire to required pressure, then retorque the valve nut to 8.0 ± 0.5 N.m (71 ± 4 in-lb).

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