Mazda CX-7 2007 Workshop Manual page 812

DTC C1414
DTC C1414
• Detection of situation where vehicle-type or drive system input signal and DSC HU/CM information
DETECTION
CONDITION remains incongruent through CAN information
POSSIBLE
• Mismatched installation of DSC HU/CM
CAUSE
Diagnostic procedure
STEP
1 VERIFY THAT THE CORRECT DSC HU/CM IS
INSTALLED
• Verify the part number of the DSC HU/CM.
• Is the part number correct?
2 CONFIGURE DSC HU/CM
• Can DSC HU/CM configure properly?
3 VERIFY DTC TROUBLESHOOTING
COMPLETED
• Make sure to reconnect all disconnected
connectors.
• Clear the DTC from the memory.
(See 04-02-3 ON-BOARD DIAGNOSIS.)
• Is the same DTC present?
4 VERIFY AFTER REPAIR PROCEDURE
• Are any other DTCs present?
End Of Sie
DTC C1994
DTC C1994
• DSC control for the front wheels continues for 10 s or more.
DETECTION
• During DSC control, the pressure increase operation to any of the all four wheels does not occur for 1.3
CONDITION
s or more.
• This does not indicate a malfunction since constant control over extended period of time is inhibited to
POSSIBLE
CAUSE protect the DSC solenoid valve inside the DSC HU.
Diagnostic procedure
STEP
1 VERIFY DTC TROUBLESHOOTING
COMPLETED
• Clear the DTC from the memory.
(See 04-02-3 ON-BOARD DIAGNOSIS.)
• Are the same DTCs present?
2 VERIFY AFTER REPAIR PROCEDURE
• Are any other DTCs present?
End Of Sie
04-02–30
ON-BOARD DIAGNOSTIC
Incorrect DSC HU/CM installed
INSPECTION
DSC control system
INSPECTION
Yes Go to the next step.
No After replacing the DSC HU/CM, go to Step 3.
(See 04-15-6 DSC HU/CM REMOVAL/INSTALLATION.)
Yes Go to the next step.
No Replace the DSC HU/CM, then go to the next step.
(See 04-15-6 DSC HU/CM REMOVAL/INSTALLATION.)
Yes Repeat the inspection from Step 1.
If the malfunction recurs, replace the DSC HU/CM, then go
to the next step.
(See 04-15-6 DSC HU/CM REMOVAL/INSTALLATION.)
No Go to the next step.
Yes Go to the applicable DTC inspection.
(See 04-02-3 ON-BOARD DIAGNOSIS.)
No DTC troubleshooting completed.
Yes Replace the DSC HU/CM, then go to the next step.
(See 04-15-6 DSC HU/CM REMOVAL/INSTALLATION.)
No Go to the next step.
Yes Go to the applicable DTC inspection.
(See 04-02-3 ON-BOARD DIAGNOSIS.)
No DTC troubleshooting completed.
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