Mazda CX-9 Grand Touring. Manual — part 119

DIAGNOSTIC PROCEDURE

DTC B211B, C1279, C1280, C1281, C1282, C1516, C1517, C2769, C2770 [DSC/RSC] DIAGNOSTIC
PROCEDURE

DETECTION CONDITION

combined sensor (yaw rate part).



C1280



Specified signal from combined (yaw rate part)
sensor has not output.



C1281



There is an abnormality in the signal from the
combined sensor (lateral-G part).



C1282



Specified signal from combined (lateral-G part)
sensor has not output.



C1516



Specified signal from combined (roll rate part)
sensor has not output.



C1517



There is an abnormality in the signal from the
combined sensor (roll rate part).



C2769



There is an abnormality in the signal from the
combined sensor (longitudinal-G part).



C2770



Specified signal from combined (longitudinal-
G part) sensor has not output.

POSSIBLE CAUSE



Combined sensor malfunction



Poor connection at connectors (female terminal)

STEP

INSPECTION

ACTION

1

INSPECT COMBINED SENSOR



Inspect the combined sensor.

(See COMBINED SENSOR
INSPECTION .)



Is the combined sensor normal?

Yes Go to the next step.

No

Replace the combined sensor, then go to the next

step.

(See COMBINED SENSOR

REMOVAL/INSTALLATION .)

VERIFY DTC TROUBLESHOOTING
COMPLETED.



Clear the DTC from the memory.

Yes

Replace the DSC/RSC HU/CM, then go to the
next step.

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

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DTC C1095, C1096 [DSC/RSC]

DTC C1095, C1096 [DSC/RSC] DETECTION CONDITION AND POSSIBLE CAUSE

2

(See ON-BOARD DIAGNOSTIC
[DSC/RSC].)



Are the same DTCs present?

(See DSC/RSC HU/CM
REMOVAL/INSTALLATION .)

No

Go to the next step.

3

VERIFY AFTER REPAIR
PROCEDURE.



Are any other DTCs present?

Yes

Go to the applicable DTC inspection.
(See ON-BOARD DIAGNOSTIC [DSC/RSC].)

No

DTC troubleshooting completed.

DTC C1095, C1096 Pump motor, motor relay system

DETECTION

CONDITION



C1095



ABS motor monitor OFF signal is input within specified time limit when the
motor signal is switched from ON to OFF by DSC/RSC HU/CM.



C1096



When pump motor monitor voltage continues for 0.05s more than 0.75V
among the pump motor ON.

POSSIBLE CAUSE



ABS 50A fuse malfunction



Open or short to ground circuit in the wiring harness between the battery and the
DSC/RSC HU/CM terminal AK



Open circuit in the wiring harness between the DSC/RSC HU/CM terminal B and
the body ground



Open or short circuit in the DSC/RSC HU/CM internal motor relay, or stuck motor
relay



Open or short circuit in the DSC/RSC HU/CM internal motor, or frozen motor



Motor relay malfunction



Poor connection at connectors (female terminal)

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 18

© 2005 Mitchell Repair Information Company, LLC.

DIAGNOSTIC PROCEDURE

DTC C1095, C1096 [DSC/RSC] DIAGNOSTIC PROCEDURE

STEP

INSPECTION

ACTION

1

INSPECT ABS FUSE CONDITION



Is the ABS 50A fuse normal?

Yes Go to the next step.

No

Replace the fuse, then go to Step 5.

INSPECT MOTOR RELAY
POWER SUPPLY FOR OPEN
CIRCUIT



Turn the ignition switch off.

Yes Go to the next step.

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

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© 2005 Mitchell Repair Information Company, LLC.

2



Disconnect DSC/RSC HU/CM
connector.



Turn the ignition switch to the
ON position (engine off).



Measure voltage between
DSC/RSC HU/CM terminal AK
(harness-side) and ground.



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



Turn the ignition switch off.



Inspect for continuity between
DSC/RSC HU/CM terminal B
(harness-side) and ground.



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



Turn the ignition switch off.



Connect the M-MDS to the
DLC-2.



Turn the ignition switch to the
ON position (engine off).



Access PMP_MOTOR active
command modes using the M-
MDS.



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



Make sure to reconnect all
disconnected connectors.



Clear the DTC from the
memory.

(See ON-BOARD
DIAGNOSTIC [DSC/RSC].)



Gradually slow down and stop
the vehicle.



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.