Chevrolet Captiva Service & Repair Manual: Anti-Lock Brake System, Inspect
| A visual inspection must always
be performed to confirm presence of aftermarket components, potential collision
damage, or areas of concern. |
| ABS module is self monitoring.
Module will carry out a preliminary electrical inspection of hydraulic pump
motor by turning pump ON for approximately 1/2 second either when ignition
switch is turned to RUN position and brake pedal is not pressed or when
vehicle is in motion and at vehicle speeds above 12 mph. ABS module will
also carry out a wheel speed sensor self-test by sending a reference voltage
to all wheel speed sensors through their circuitry when ignition switch
is turned to RUN position, with or without brake pedal application. If a
fault is detected in pump or wheel speed sensors, ABS module will shut down
and disable anti-lock system. Normal power assisted braking, however, remains. |
| 1. |
Verify stop lamps operate correctly
by applying and releasing brake pedal with ignition switch in OFF
position. |
| 2. |
Verify that PRNDL operates correctly
on instrument cluster. |
| 3. |
Visually inspect for obvious signs
of mechanical or electrical damage. |
| 4. |
If an obvious cause for an observed
or reported concern is found, correct cause if possible before proceeding. |
| 5. |
Connect a suitably programmed scan
tool to vehicle DLC. |
| 6. |
Carry out network test. |
| 7. |
Clear continuous DTCs and carry out
self-test diagnostics for ABS module. |
|
Caution: Pull relay straight
out from electrical center terminals, using relay removal tool No. EL-43244,
or equivalent. Use of pliers or a flat bladed tool could damage electrical
...
1.
Verify that following areas function
as designed:
a.
Battery is fully charged and cables
are clean and tight.
...
ABS Relay R&R
Antilock Brake System Diagnosis & Testing