626 ES V6-2.5L DOHC (1997)
Hydraulic Control Assembly - Antilock Brakes: Testing and Inspection
Hydraulic Assembly
1. Verify that the battery is fully charged. Verify that the ABS warning light goes out after the engine is started.
2. If the light stays ON after the engine has started, the ABS control module detects a failure and will not activate the ABS hydraulic unit.
3. Turn off the engine.
4. On level ground, jack up the vehicle and support it evenly on safety stands. Shift the transaxle to neutral or N range.
5. Release the parking brake.
6. Rotate the wheels by hand, and inspect for brake drag.
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 ON and verify that the brake is released momentarily (approximate 0.5 second) and
that the wheel turns when pressure reduction operates.
10. Check operation of the remaining wheels in order: left front, right rear, left rear.
11. If steps 9 and 10 show correct operation, the following systems are OK:
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Brake piping to the ABS hydraulic unit
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Braking system, including the ABS hydraulic unit
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Electrical system in the ABS hydraulic unit (solenoid, ABS motor, etc.)
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ABS control module, its output system (solenoid, relay, etc.) and harness.
The following are not checked with the above steps.
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Input system and harness of the ABS control module
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Intermittent failure
