TOYOTA PREVIA 91-97 REPAIR MANUAL

BRAKES 9-35

1st Digit 2nd Digit

1.5s

0.5s 2.5s 1.5s

Riuinil

2 3

4.0s

fl

1 1

Fig. 130 ABS trouble code example—2TZ-FE engine

12. Attach the service connector.


13. Turn the ignition switch to the ON position and check that the ABS
    light goes off after the warning light goes on for about 3 seconds.

2TZ-FZE Engine

I See Figures 131,132 and 133

1. Make sure the battery voltage is about 12 volts.


2. Turn the ignition switch to the ON position.


3. Check that the ABS warning light illuminates for about 3 seconds. If
   not, inspect and repair or replace the fuse, bulb or wiring harness.


4. Turn the ignition switch to the ON position.


5. Using a jumper wire connect terminals TC to E1 of the DLC1.


6. Pull out the short pin.


7. In the event that there is a malfunction, 4 seconds later the warning
   light will begin to blink. Read the number of blinks.

**The first number of blinks will equal the first digit of as two digit
code. After a 1.5 second pause, the 2nd number of blinks will equal

Fig. 131 The short pin is located in the DLC1—2TZ-FZE engine

the 2nd number of the two digit code. If there are more than two or

more codes, there will be a 2.5 second pause between codes. The

indication will begin after a 4.0 second pause from the smaller

value and continue in order to larger.

8. If the system is operating normally with no malfunctions, the warn-
   ing light will blink once every 0.5 seconds.


9. Repair the system.


10. After the malfunction occurs, and components have been repaired,
    clear the coeds stored in the ECM.


11. Remove the jumper wire from the TC and E1 terminals of the
    DLC1.


12. Install the short pin intheDLd.


13. Turn the ignition switch to the ON position and check that the
    ABS light goes off after the warning light goes on for about 3 sec-
    onds.

CLEARING TROUBLE CODES

1. Turn the ignition switch to the ON position.


2. Disconnect the service connector, or pull the short pin, depending on
   the type your model has.


3. Using a jumper wire, connect terminals Tc and E1 of the DLC1


4. Depress the brake pedal 8 or more times within 3 seconds.


5. Check that the warning light shows a normal code.


6. Attach the service connector or install the short pin.


7. Remove the jumper wire and double check the warning light is at
   normal code.

Control Relays

TESTING

1991-93 Models

I See Figures 134,135,136,137 and 138

1. With the ignition switch OFF, remove the 2 control relays from the
   actuator. For identification, the solenoid relay has 5 terminals; the pump
   motor relay has 4 terminals.


2. Check the continuity of the pump motor relay. There should be conti-
   nuity between terminals 1 and 2. There should be no continuity between
   terminals 3 and 4 or between terminals 1 and 4,


3. Apply battery voltage to terminal 1 and connect terminal 2 to battery
   ground. There should be continuity between terminals 3 and 4 but no conti-
   nuity between terminals 1 and 4.


4. Check the continuity of the solenoid relay. There should be continuity
   between terminals 1 and 3 as well as between terminals 2 and 4. There
   should be no continuity between terminals 4 and 5.


5. Apply battery voltage to terminal 3 and connect terminal 1 to battery
   ground. There should be continuity between terminals 4 and 5 but no conti-
   nuity between terminals 2 and 4.


6. All continuity checks must be met; if any check reveals a fault, the
   relay must be replaced.

1994-97 Models

I See Figures 139,140,141,142 and 143

1. To inspect the motor relay circuit, turn the ignition switch OFF and
   remove the control relay from the actuator.


2. Inspect the continuity of the motor relay circuit. Check that there is
   continuity between terminals 3 and 4, and no continuity between terminals
   1 and 2.


3. If continuity is not as specified above, replace the relay.