Replacement
Attention.
- After replacing the control unit, you must enter into the new unit using the diagnostic system scanner (GDS) injector data (7 digits) each cylinder.
- If the vehicle is equipped with an immobilizer or "Smart key", perform the procedure at the same time "learning keys".
1. Turn off the ignition.
2. Disconnect the negative (-) battery wire.
3. Disconnect the connector (A) engine control unit.
4. Remove the battery.
5. Turn away bolts and a nut of fastening of an arm of the control block, then remove the block (A).
6. Install a new control box.
Note: Tightening torque:
- Bolts of fastening of the control unit (on bracket): 3.9 -5.9 Nm.
- Nuts for fastening the control unit bracket: 9.8 - 14.7 Nm.
- Control unit bracket mounting bolt: 21.6 - 32.4 Nm.
7. Connect the negative (-) wire to the battery.
8. Follow the procedure «Replacing the control unit» [with catalytic particulate filter (CPF)].
(1) Switch off the ignition.
(2) Connect diagnostic system scanner (GDS) to the diagnostic socket (DLC).
(3) Turn on the ignition.
(4) Select «Vehicle, Model year, Engine, System» (car, model year, engine, system).
(5) Select «Vehicle S/W Management» (Vehicle software control).
(6) Select «Component Change Routine» (Component replacement program).
(7) Select "ECU CHANGE" (Replacing the control unit (ECU)).
(8) Enter the odometer value.
(9) Confirm message «Complete» (Ready) and turn the ignition key to the OFF position.
(10) Wait more than 10 seconds and turn the ignition key to the ON position.
9. Follow the procedure «Data entry for individual nozzles».
10. Follow the procedure «Key Learning».
Checking the technical condition
1. Checking the circuit «masses» engine control unit.
Measure the resistance between the engine control unit (ECM) And «weight» chassis using the back of the ECM harness connector as a test point. If a malfunction is found, correct it.
2. Checking the connector of the engine control unit.
Disconnect the engine control unit connector (ECM) and visually inspect the findings «masses» on the sides of the ECM and wiring harness for bent contacts and poor contact pressure. If a malfunction is found, correct it.
3. If no fault is found during steps 1 and 2, the engine control unit itself may be faulty. In this case, replace the ECM and recheck the vehicle. If the car runs normally, then the engine control unit was probably the cause of the malfunction.
4. Recheck the original engine control unit.
Install the original (presumably faulty) engine control unit into a known-good vehicle and perform a vehicle test. If the problem recurs, replace the original engine control unit. If the problem does not occur, then there is an intermittent malfunction.