Mazda CX-9 Grand Touring 2009 Manual page 471

DSC/RSC HU/CM terminal X
and ground.
Is the voltage approx. 10 V?
INSPECT DSC/RSC HU/CM
GROUND FOR POOR GROUND
OR OPEN CIRCUIT
Turn the ignition switch off.
2
Measure the resistance between
ground and DSC/RSC HU/CM
terminal A.
Is the resistance within 0-1
ohm ?
VERIFY TROUBLESHOOTING
COMPLETED
Make sure to reconnect all
disconnected connectors.
3
Clear the DTC from the memory.
(See ON-BOARD
DIAGNOSTIC [DSC/RSC].)
Is the same DTC present?
VERIFY AFTER REPAIR
PROCEDURE
4
Are any other DTCs present?
DTC B1342, C1730 [DSC/RSC]
NOTE:
Perform the inspection of DTCs other than B1342 and C1730 first when
verifying DTCs.
DTC B1342, C1730 [DSC/RSC] DETECTION CONDITION AND POSSIBLE CAUSE
DTC B1342, C1730
DETECTION
CONDITION
2008 Mazda CX-9 Grand Touring
2008 BRAKES On-Board Diagnostic (DSC/RSC) - Mazda CX-9
Yes Go to the next step.
No
Yes
No
Yes
No
DSC/RSC HU/CM system
B1342
DSC/RSC HU/CM on-board diagnostic function detects control
module malfunction.
C1730
Sensor supply voltage is out of range.
to Step 3.
If there is no continuity:
Repair or replace the wiring harness for open
circuit between the DSC/RSC HU/CM and
ground, then go to the next step.
If the resistance is not within 0-1 ohm :
Repair or replace the wiring harness for poor
ground, then go to the next step.
Replace the DSC/RSC HU/CM, then go to the next
step.
(See DSC/RSC HU/CM
REMOVAL/INSTALLATION .)
Go to the next step.
Go to the applicable DTC inspection.
(See ON-BOARD DIAGNOSTIC [DSC/RSC].)
DTC troubleshooting completed.