Warning:
- Before removing any component of the engine management system, turn off the ignition to avoid damage to the engine control unit.
- Damage to the engine control unit can be caused by contact of the metal body of the unit with battery voltage. When servicing the control unit, it is recommended to disconnect the battery from the vehicle wiring.
- Before disconnecting the engine control unit connector, clean the surfaces around the connector. After disconnecting, check the condition of the connector seal, install the gasket correctly to prevent dirt from entering the connector.
- The new control unit must be programmed.
Attention: it is necessary to record the remaining life of the engine oil, otherwise the control unit will assume that the engine oil is new, therefore (if the oil life is not entered) after replacing the ECM, change the oil after 5000 km.
Withdrawal
1. Use a scanner to read the remaining engine oil life.
2. Disconnect the negative battery cable.
Early models
3. Remove the control box cover.
4. Remove the bolts (2) securing the control unit wiring connectors, disconnect the connectors.
Later models
3. Detach the retainer (2) top wire harness and disconnect the connector (1) control unit.
4. Detach the retainer (3) bottom wire harness and disconnect the connector (4) control unit.
All models
5. Unhook the fasteners securing the ECM to the bracket.
early models | Later models |
6. Remove the ECM.
Installation
7. Installation is carried out in the reverse order.