Acura Coupes and Sedans 1994-2000 Repair Information

ABS Control Unit

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The ABS control unit, or ECU, manages the entire system via inputs from various sensors and programmed decisions which are stored within the unit. This management system includes the pump motor, various electronic solenoids, wheel sensors and an internal self-diagnostic mode. The main function of the ABS control unit is to perform calculations on the signals received from each one of the sensors at the wheels. This will enable it to control the system by actuating solenoid valves that regulate the flow and pressure of the brake fluid to each wheel. The system was designed with a sub function that gives driving signals to the pump motor as well as signals the self diagnostic mode which is a necessity for backing up the antilock braking system.

REMOVAL & INSTALLATION Except 1997 TL Models



See Figure 1

Click image to see an enlarged view

Fig. Fig. 1: Location of the typical ABS control unit-except 1997 TL models

  1. Disconnect the negative battery cable.
  2.  
  3. Remove the right quarter trim panel.
  4.  
  5. Detach the ABS control unit electrical connectors.
  6.  
  7. Remove the ABS control unit by removing the mounting fasteners.
  8.  

To install:
  1. Install the unit in the reverse order of removal.
  2.  
  3. Check that the ABS light comes on and then goes off once the engine has been started.
  4.  
  5. Drive the vehicle to ensure that the ABS light does not come on.
  6.  

1997 TL Models See Figure 2

Click image to see an enlarged view

Fig. Fig. 2: Location of the ABS control unit on a 1997 TL model

  1. Disconnect the negative battery cable.
  2.  
  3. Remove the glove box.
  4.  
  5. Remove the mounting bolts that secure the ABS control unit mounting bracket to the firewall.
  6.  
  7. Shift the bracket forward to gain access to the control units connectors.
  8.  
  9. Detach the control unit connectors.
  10.  
  11. Remove the radiator fan controller module connector.
  12.  
  13. Unplug the connectors from the ABS control unit.
  14.  
  15. Remove the bracket from the car.
  16.  
  17. Remove the radiator fan controller and the ABS control unit mounting bolts.
  18.  

See Figure 3

Click image to see an enlarged view

Fig. Fig. 3: Exploded view of the control unit mounting

  1. Remove the bracket from the ABS control unit.
  2.  
  3. Installation of the ABS control unit is the reverse of the removal procedure.
  4.  

 
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