9000 Hatchback L4-2290cc 2.3L DOHC Turbo EFI (1994)
Electronic Brake Control Module: Service and Repair
With Mark II ABS System
Replacing ECU
1.
Disconnect battery ground cable.
2.
Remove two mounting screws, then lift out ECU and disconnect connector.
3.
Reverse procedure to install.
Calibrating ECU
Calibration must be carried out after replacing any major system component, such as ETS ECU, TC/ABS ECU, pedal potentiometer or throttle
housing.
1.
Start and run engine until normal operating temperature is reached. If the engine will not run correctly during warm up cycle, establish ISAT
communications and enter command code 974 in order to enter basic data and enable warm up to be completed.
2.
Switch off engine. Connect ISAT and capacitor lead, part No. 86-11-048, to Black diagnostic connector.
3.
Turn ignition On, select DIAG, ONE system from menu, and enter system number 3. Check if any fault codes are stored in memory. If fault codes
are present, repair as necessary, then erase fault codes before proceeding.
4.
To enter the base line setting, enter command code 971. ISAT will display 8A971. After several seconds, the display will change to 8D971,
indicating that the basic setting has been made and the system is ready for calibration.
5.
With ignition On, engine Off, enter command code 973.
a. Once the TCS CTRL light illuminates, start engine. Do not touch pedals.
b. Wait for idle to stabilize at approximately 850 RPM.
c. The ECU will raise engine speed to approximately 3000 RPM.
6.
The calibration procedure will be discontinued if a pedal is depressed or vehicle starts to roll.
7.
When calibration process is complete, the TCS CTRL light will shutoff. Terminate ISAT communications and shutoff engine. Check if any fault
codes were stored during calibration procedure.
