Mazda RX-8 Manual page 1552

NO.8 ANY OF THE FOLLOWING LIGHTS REMAIN ON: (ABS WARNING LIGHT,
BRAKE SYSTEM WARNING LIGHT, DSC INDICATOR LIGHT AND/OR DSC OFF
LIGHT)
Any of the following lights remain on: (ABS warning light, BRAKE system warning light, DSC
8
indicator light and/or DSC OFF light)
[TROUBLESHOOTING HINTS]
Brake fluid amount is low
•
Parking brake does not release
•
No connection at DSC HU/CM connector
•
(When DSC HU/CM connector is disconnected, ABS warning light and BRAKE system warning
light illuminate)
DSC HU/CM detected malfunction (Input and output device malfunction)
•
DSC HU/CM detects low voltage in power supply
•
DSC HU/CM ground malfunction
•
(When DSC HU/CM ground is not securely connected, ABS warning light and BRAKE system
warning light illuminate but diagnostic trouble code does not displayed)
DSC HU/CM does not operate (DSC HU/CM malfunction)
•
Diagnostic procedure
STEP INSPECTION
INSPECT BRAKE FLUID AMOUNT AND VERIFY
THAT PARKING BRAKE RELEASES
1
Is the brake fluid amount normal?
•
Is the parking brake lever released?
•
INSPECT DTCS IN DSC HU/CM
Inspect the DTC for the DSC ON-BOARD
•
2
DIAGNOSTIC SYSTEM.
Have DTCs been stored in memory?
•
INSPECT WHETHER MALFUNCTION IS IN
CONTROL MODULE CONNECTOR, TERMINAL OR
OTHER
3
Do ABS warning light and BRAKE system warning
•
light go off after 4 s when the ignition switch is
turned to the ON position?
ACTION
Yes Go to the next step.
Add brake fluid or release parking
No
brake lever.
Perform inspection using appropriate
Yes
DTC.
No Go to the next step.
Temporary poor connection in
control module connector.
Inspect DSC HU/CM connector, then
Yes
go to Step 6.
Inspect DSC HU/CM connector
terminal, then go to Step 7.
(w) RX8 - Brakes
Page 138