For 1990-2009 cars

## Engine Control Module Programming and Setup without LXV

The following service procedures require either a programming or a setup event performed for a complete repair.

### ECM Replacement

Note: It is not necessary to program a new engine control module (ECM). The ECM is programmed from the factory. Ensure the new ECM is equipped with the latest software/calibration.

If the engine control module (ECM) is replaced, the following procedures must be performed:

1. Idle learn procedure--Refer to the appropriate procedure:

• | Idle Learn for the 1.2L engine

• | Idle Learn for the 1.4L (L95) DOHC engine

• | Idle Learn for the 1.4L (LDT) DOHC engine

• | Idle Learn for the 1.5L engine

• | Idle Learn for the 1.6L (LXT) engine

2. The crankshaft position (CKP) system variation learn procedure-- Refer to the appropriate procedure:

• | Crankshaft Position System Variation Learn for the 1.4L (L95) DOHC engine

• | Crankshaft Position System Variation Learn for the 1.4L (LDT) DOHC engine

• | Crankshaft Position System Variation Learn for the 1.5L engine

• | Crankshaft Position System Variation Learn for the 1.6L (LXT) engine

3. Theft Deterrent--Refer to Programming Theft Deterrent System Components. The ECM will learn the incoming fuel continue password immediately upon receipt of a password message. Once a password message is received, and a password is learned, a learn procedure must be performed to change this password again. An ECM which has been previously installed in another vehicle will have learned the other vehicle's fuel continue password, and will require a learn procedure after programming to learn the current vehicle's password.

### ECM Reprogramming

If the engine control module (ECM) needs to be reprogrammed, refer to Service Programming System (SPS).

### Setup for Component Replacement

The replacement of some components will require a setup procedure for complete repair.

• | If any of the following components are replaced, an idle learn procedure must be performed. Refer to the appropriate procedure:

- | Idle Learn for the 1.2L engine

- | Idle Learn for the 1.4L (L95) DOHC engine

- | Idle Learn for the 1.4L (LDT) DOHC engine

- | Idle Learn for the 1.5L engine

- | Idle Learn for the 1.6L (LXT) engine

• | Throttle body assembly

• | ECM

• | If any of the following components are replaced, a CKP variation learn procedure must be performed. Refer to the appropriate procedure:

- | Crankshaft Position System Variation Learn for the 1.4L (L95) DOHC engine

- | Crankshaft Position System Variation Learn for the 1.4L (LDT) DOHC engine

- | Crankshaft Position System Variation Learn for the 1.5L engine

- | Crankshaft Position System Variation Learn for the 1.6L (LXT) engine

• | CKP sensor

• | Engine replacement

• | Any engine repair that disturbs the relationship between CKP sensor and the crankshaft reluctor wheel.

## Engine Control Module Programming and Setup with LXV

The following service procedures require either a programming or a setup event performed for a complete repair.

Warning: Replacement or reprogramming of the ECM, or replacement of the clutch pedal position sensor (CPPS) or clutch pedal requires that a CPPS learn procedure be performed. Failure to perform the CPPS learn procedure may result in personal injury or damage to the vehicle or its components if the vehicle is in gear and the starter motor is accidentally engaged.

### ECM Replacement and Reprogramming

If the engine control module (ECM) is replaced or reprogrammed, the following procedures must be performed:

1. ECM reprogramming--Refer to Service Programming System (SPS).
2. Clutch pedal position sensor learn--Refer to Clutch Pedal Position Sensor Learn.
3. Heated oxygen (HO2S) sensor heater learn procedure using a scan tool.
4. Idle learn procedure--Refer to Idle Learn.
5. The crankshaft position (CKP) system variation learn procedure--Refer to Crankshaft Position System Variation Learn.
6. Engine Oil Life Remaining--When available, use a scan tool to reset the Engine Oil Life Remaining back to the original percentage recorded before the module was reprogrammed.
7. Theft Deterrent--Refer to Programming Theft Deterrent System Components. The ECM will learn the incoming fuel continue password immediately upon receipt of a password message. Once a password message is received, and a password is learned, a learn procedure must be performed to change this password again. An ECM which has been previously installed in another vehicle will have learned the other vehicle's fuel continue password, and will require a learn procedure after programming to learn the current vehicle's password.

### Setup for Component Replacement

The replacement of some components will require a setup procedure for complete repair.

| Note: If the throttle plate is cleaned, an Idle Learn Procedure must be performed.

• | If any of the following components are replaced, an Idle Learn Procedure must be performed. Refer to Idle Learn.

- | Throttle body assembly

- | ECM

• | If any of the following components are replaced, a CKP Variation Learn Procedure must be performed. Refer to Crankshaft Position System Variation Learn.

- | CKP sensor

- | Engine replacement

- | Any engine repair that disturbs the relationship between CKP sensor and the crankshaft reluctor wheel.

• | If any of the following components are replaced, a Clutch Pedal Position Sensor Learn Procedure must be performed. Refer to Clutch Pedal Position Sensor Learn.

- | Clutch pedal

- | Clutch pedal position sensor