Mazda CX-9 Grand Touring. Manual — part 123

DTC C1327 [DSC/RSC] DETECTION CONDITION AND POSSIBLE CAUSE

DIAGNOSTIC PROCEDURE

DTC C1327 [DSC/RSC] DIAGNOSTIC PROCEDURE

DTC C1327

Brake fluid level sensor

DETECTION CONDITION



Brake fluid level remains low

POSSIBLE CAUSE



Decrease in amount of brake fluid



Malfunction of brake fluid level sensor

STEP

INSPECTION

ACTION

1

INSPECT FOR BCM
MALFUNCTION FOR DTCs



Turn the ignition switch off.



Using the M-MDS, perform the
DTC inspection for the BCM.



Are any DTCs detected?

Yes

Go to applicable DTC inspection.
(See DTC TABLE [BCM] )

No

Go to the next step.

2

INSPECT BRAKE FLUID LEVEL



Inspect the brake fluid level.



Is it normal?

Yes Go to the next step.

No

Add brake fluid to specified level, then go to the next

step.

3

INSPECT BRAKE FLUID LEVEL
SENSOR



Inspect the brake fluid level
sensor.

(See BRAKE FLUID LEVEL
SENSOR INSPECTION .)



Is it normal?

Yes Go to the next step.

No

Repair brake fluid level sensor, then go to the next

step.

(See MASTER CYLINDER

REMOVAL/INSTALLATION .)

4

VERIFY DTC
TROUBLESHOOTING
COMPLETED



Clear the DTC from the memory.

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



Is the same DTC present?

Yes

Repeat the inspection from Step 1.
If the malfunction occurs again, replace the
DSC/RSC HU/CM, then go to the next step.
(See DSC/RSC HU/CM
REMOVAL/INSTALLATION .)

No

Go to next step.

5

VERIFY AFTER REPAIR
PROCEDURE

Yes

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

2008 Mazda CX-9 Grand Touring

2008 BRAKES On-Board Diagnostic (DSC/RSC) - Mazda CX-9

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Sunday, November 15, 2009 9:50:13 AM

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DTC C1329, C1330, C1331, C1332, C1333, C1334, C1335, C1336, C1527,
C1528, C1530, C1531 [DSC/RSC]

DTC C1329, C1330, C1331, C1332, C1333, C1334, C1335, C1336, C1527, C1528, C1530, C1531
[DSC/RSC] DETECTION CONDITION AND POSSIBLE CAUSE

DIAGNOSTIC PROCEDURE

DTC C1329, C1330, C1331, C1332, C1333, C1334, C1335, C1336, C1527, C1528, C1530, C1531
[DSC/RSC] DIAGNOSTIC PROCEDURE



Are any other DTCs present?

No

DTC troubleshooting completed.

DTC C1329

RF outlet solenoid valve coil system

DTC C1330

LR outlet solenoid valve coil system

DTC C1331

RR outlet solenoid valve coil system

DTC C1332

LF outlet solenoid valve coil system

DTC C1333

LR inlet solenoid valve coil system

DTC C1334

LF inlet solenoid valve coil system

DTC C1335

RF inlet solenoid valve coil system

DTC C1336

RR inlet solenoid valve coil system

DTC C1527

RH traction control solenoid valve coil system

DTC C1528

LH traction control solenoid valve coil system

DTC C1530

RH stability control solenoid valve coil system

DTC C1531

LH stability control solenoid valve coil system

DETECTION

CONDITION



Temperature of a solenoid valve coil exceeds specification.

POSSIBLE CAUSE



This does not indicate a malfunction since constant control over extended
period of time is inhibited to protect the RSC solenoid valve inside the
DSC/RSC HU.

STEP

INSPECTION

ACTION

1

VERIFY DTC TROUBLESHOOTING
COMPLETED



Clear the DTC from the memory.

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



Are the same DTCs 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.

2

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.

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 34

© 2005 Mitchell Repair Information Company, LLC.

DTC C1446 [DSC/RSC]

DTC C1446 [DSC/RSC] DETECTION CONDITION AND POSSIBLE CAUSE

DTC C1446

Brake switch system

DETECTION

CONDITION



Brake switch ON signal is not input when the brake fluid pressure sensor signal
reaches the specified value.



Brake switch ON signal is input even if the signal from the brake fluid pressure
sensor is less than the specification.

POSSIBLE CAUSE



Open or short circuit in wiring harness between the brake switch and PCM 1T
terminal



Brake switch 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 35

© 2005 Mitchell Repair Information Company, LLC.

DIAGNOSTIC PROCEDURE

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 36

© 2005 Mitchell Repair Information Company, LLC.