Mazda 6 Service Manual: Abs (abs/tcs) hu/cm system inspection
System Inspection
Preparation
1. Verify that the battery is fully charged. With the ignition switch on, verify that the ABS and BRAKE system warning lights goes out after 2.4 seconds.
2. If the lights stays on after 2.4 seconds,
the ABS (ABS/TCS) HU/CM detects a failure. Follow the troubleshooting procedures.
3. Turn the ignition switch off.
4. On level ground, jack up the vehicle and support it evenly on safety stands. Shift the transaxle to N position.
5. Release the parking brake.
6. Rotate the wheels by hand, and inspect for brake drag.
Operation of ABS inspection
1. Perform the Preparation.
2. Connect the SSTs
(WDS or equivalent) to the data link connector-2 (DLC-2).
3. Set up an active command mode inspection according to the combination of commands below.
The chart above shows an example of a right wheel inspection.
Note
- When working with two people, one should press on the brake pedal, the other should attempt to rotate the wheel being inspected.
4. Send the command while pressing on the brake pedal and attempting to rotate the wheel being inspected.
5. When pressure is being maintained, and click sound indicating the solenoid is operating comes from the ABS (ABS/TCS) HU/CM, confirm that the wheel does not rotate. When pressure is being reduced, and click sound indicating the solenoid is operating comes from the ABS (ABS/TCS) HU/CM, confirm that the wheel rotates, even though the brake pedal is being depressed.
Note
- To protect the ABS (ABS/TCS) HU/CM, the solenoid valve used for simulations and the ABS motor stay on for 10 seconds each time they are switched on.
- Performing the inspections above determines the following.
- The ABS (ABS/TCS) HU/CM brake lines are normal.
- The ABS (ABS/TCS) HU/CM hydraulic system is not significantly abnormal.
- The ABS (ABS/TCS) HU/CM wiring is normal.
- However, the following items cannot be checked.
- ABS (ABS/TCS) HU/CM input system harness and parts
- Extremely small leaks in the ABS (ABS/TCS) HU/CM internal hydraulic system
- Unusual intermittent occurrences in the above items
Abs/tcs
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Abs (abs/tcs) hu/cm removal/installation
Caution
When replacing the ABS (ABS/TCS) HU/CM, configuration procedure
must be done before removing the ABS (ABS/TCS) HU/CM. If configuration is
not completed before removing the ABS (ABS/T ...
Other materials:
Mazda 6 Service Manual: Electrical parts
Battery cable
Before disconnecting connectors or removing electrical parts, disconnect
the negative battery cable.
Wiring Harness
To remove the wiring harness from the clip in the
engine room, pry up the hook of the clip using a
flathead screwdriver.
...
Mazda 6 Service Manual: Owner Maintenance Precautions
The owner or a qualified service technician should make these vehicle inspections
at the indicated intervals to ensure safe and dependable operation.
Bring any problem to the attention of an Authorized Mazda Dealer or qualified
service technician as soon as possible.
At Least Twice a Year (For ...