Mazda CX-9 Grand Touring 2009 Manual page 507

DSC/RSC HU/CM does not operate (DSC/RSC HU/CM malfunction)
DIAGNOSTIC PROCEDURE
DIAGNOSTIC PROCEDURE
STEP
INSPECT BRAKE FLUID AMOUNT AND
VERIFY THAT PARKING BRAKE
RELEASES
1
Is the brake fluid amount normal?
Is the parking brake pedal released?
INSPECT DTCS IN INSTRUMENT
CLUSTER
Inspect the DTC for the instrument
2
cluster ON-BOARD DIAGNOSTIC
SYSTEM.
Has DTC U2064 been recorded in
memory?
INSPECT DTCS IN DSC/RSC HU/CM
Inspect the DTC for the ON-BOARD
3
DIAGNOSTIC SYSTEM.
Have DTCs been stored in memory?
INSPECT WHETHER MALFUNCTION
IS IN CONTROL MODULE
CONNECTOR, TERMINAL OR OTHER
4
Do the ABS warning light and BRAKE
system warning light go out after 4 s
when the ignition switch is turned to the
ON position?
INSPECT BATTERY
5
Is the battery voltage normal?
INSPECT CHARGING SYSTEM
6
Is the battery voltage normal with
electrical load (A/C, headlight, etc.) on
and engine idling?
VERIFY THAT DSC/RSC HU/CM
2008 Mazda CX-9 Grand Touring
2008 BRAKES Symptom Troubleshooting (DSC/RSC) - Mazda CX-9
INSPECTION ACTION
Yes Go to the next step.
Add brake fluid or release parking brake
No
Yes Go to the next step.
Inspect the instrument cluster. (See
No INSTRUMENT CLUSTER
INSPECTION .)
Perform inspection using appropriate DTC.
Yes (See ON-BOARD DIAGNOSIS
[DSC/RSC] .)
No Go to the next step.
Temporary poor connection in control module
connector.
Inspect DSC/RSC HU/CM connector, then go
Yes
to Step 7.
Inspect DSC/RSC HU/CM connector terminal,
then go to Step 8.
No Go to the next step.
Yes Go to the next step.
Inspect the battery and charging system.
(See BATTERY INSPECTION [MZI-3.7] .)
No
(See GENERATOR INSPECTION [MZI-
Yes Go to the next step.
Inspect the charging system (drive belt
tension, generator, etc.).
No
(See GENERATOR INSPECTION [MZI-
Yes Go to the next step.
pedal.
3.7] .)
3.7] .)