2
z
Disconnect DSC/RSC HU/CM
connector.
z
Turn the ignition switch to the
ON position (engine off).
z
Measure voltage between
DSC/RSC HU/CM terminal AK
(harness-side) and ground.
z
Is the voltage B+?
No
Repair or replace the wiring harness for open circuit
between battery positive terminal and DSC/RSC
HU/CM terminal AK, then go to Step 5.
3
INSPECT PUMP MOTOR
GROUND FOR OPEN CIRCUIT
z
Turn the ignition switch off.
z
Inspect for continuity between
DSC/RSC HU/CM terminal B
(harness-side) and ground.
z
Is there continuity?
Yes Go to the next step.
No
Repair or replace the wiring harness for open circuit
between DSC/RSC HU/CM terminal B and ground,
then go to Step 5.
4
VERIFY PUMP MOTOR
OPERATION
z
Turn the ignition switch off.
z
Connect the M-MDS to the
DLC-2.
z
Turn the ignition switch to the
ON position (engine off).
z
Access PMP_MOTOR active
command modes using the M-
MDS.
z
Does the pump motor operate?
Yes Go to the next step.
No
Replace the DSC/RSC HU/CM, then go to the next
step.
(See
DSC/RSC HU/CM
REMOVAL/INSTALLATION
.)
5
VERIFY TROUBLESHOOTING
COMPLETED
z
Make sure to reconnect all
disconnected connectors.
z
Clear the DTC from the
memory.
(See
ON-BOARD
DIAGNOSTIC [DSC/RSC]
.)
z
Gradually slow down and stop
the vehicle.
z
Is the same DTC present?
Yes
Replace the DSC/RSC HU/CM, then go to the next
step.
(See
DSC/RSC HU/CM
REMOVAL/INSTALLATION
.)
No
Go to the next step.
VERIFY AFTER REPAIR
Go to the applicable DTC inspection.
2008 Mazda CX-9 Grand Touring
2008 BRAKES On-Board Diagnostic (DSC/RSC) - Mazda CX-9
Microsoft
Sunday, November 15, 2009 9:50:13 AM
Page 20
© 2005 Mitchell Repair Information Company, LLC.