Mazda RX-8 Workshop Manual page 1586

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2011 - RX-8 - Brakes
DTC C1140 [ABS]
DTC C1140
DETECTION
CONDITION
POSSIBLE
CAUSE
Diagnostic procedure
STEP
INSPECT IF MALFUNCTION OCCURRED DUE TO ABS HU/CM
1 INTERNAL MALFUNCTION (PIPE CLOGGING)
Perform the ABS system inspection.
(See
Is the system normal?
INSPECT IF MALFUNCTION OCCURRED IN CONVENTIONAL
2
BRAKE SYSTEM
Inspect the brake fluid level.
Start the engine.
Drive the vehicle and inspect the brake operation.
Is the result normal?
INSPECT IF MALFUNCTION IS DUE TO PARKING BRAKE
3
DRAGGING
Turn the ignition switch off.
ABS HU/CM (pump)
Lock-up of right front and left rear wheels, or left front and right rear
wheel is detected during ABS operation.
ABS HU/CM internal pump motor frozen
ABS HU/CM malfunction
INSPECTION
ABS SYSTEM INSPECTION.)
ACTION
YesGo to the next step.
No Replace the ABS HU/CM,
then go to Step 4.
(See ABS HU/CM
REMOVAL/INSTALLATION.)
YesGo to the next step.
No Inspect the conventional
brake lines.
Repair the malfunctioning
part, then go to Step 4.
YesGo to the next step.
No Repair the parking brake,