MPV LX 2WD V6-3.0L SOHC (1998)
Hydraulic Control Assembly - Antilock Brakes: Testing and Inspection
ABS HYDRAULIC UNIT AND CONTROL MODULE INSPECTION
NOTE If a past diagnostic trouble code(s) is memorized, the system inspection mode will not work. Make sure that there is no code(s) in the ABS
memory before doing this inspection
1. Verify that the battery is fully charged. With the ignition switch at ON, verify that the ABS warning light goes out after 2 - 4 seconds.
2. If the light stays ON after 2 - 4 seconds the ABS control module detects a failure and will not activate the ABS hydraulic unit. Follow the
troubleshooting procedures.
3. Turn the ignition switch to OFF.
4. On level ground, jack up the vehicle and support it evenly on safety stands. Shift the transmission to N position.
5. Release the parking brake.
6. Rotate the wheels by hand, and inspect for brake drag.
CAUTION: Connecting the wrong data link connector terminals may possibly cause a malfunction. Carefully connect the specified terminals
only.
7. Using a jumper wire, connect the TBS and GND terminals of the data link connector.
8. Depress the brake pedal, and have an assistant verify that the right front wheel will not turn.
9. With the brake pedal still depressed, turn the ignition switch to ON and verify that the brake is released momentarily (approximately 0.5 seconds)
and that the wheel turns when pressure-reduction operates.
10. Check the operation of the remaining wheels in order: left front, rear.
11. If steps 9 and 10 show correct operation, the following systems are OK:
-
Brake piping to ABS hydraulic unit.
-
Braking system, including ABS hydraulic unit.
-
Electrical system in ABS hydraulic unit (solenoid, ABS motor, etc.).
-
ABS control module, its output system (solenoid, relay, etc.) and harness
The following are not checked with the above steps:
-
Input system and harness of ABS hydraulic unit and control module.
-
Intermittent failure.
-
Fluid leakage.
12. Replace the ABS hydraulic unit if wheels do not rotate. Check the brake piping to the ABS hydraulic unit if wheels rotate but their rotation order is
not correct.
13. Remove the jumper wire.
