DTC C1186, C1266 [ABS]
DTC C1186, C1266 POSSIBLE CAUSE TABLE
Make sure to
reconnect all
disconnected
connectors.
Clear the DTC from
the memory.
(See
Clearing DTCs
Procedures
.)
Start the engine and
drive the vehicle at
10
km/h {6.2 mph} or
more.
Are the same DTCs
present?
(See
DSC HU/CM
REMOVAL/INSTALLATION
.)
No
Go to the next step.
5
VERIFY AFTER REPAIR
PROCEDURE
Are any other DTCs
present?
Yes
Go to the applicable DTC inspection.
(See
DTC Table
.)
No
DTC troubleshooting completed.
DTC C1186, C1266
Fail-safe relay system
DETECTION CONDITION
C1186
ABS HU/CM internal valve relay
remains OFF when valve relay ON is
commanded.
C1266
ABS HU/CM internal valve relay
remains ON (stuck) when valve relay
OFF is commanded.
POSSIBLE CAUSE
ABS 30 A fuse malfunction
Open circuit or short to ground in the wiring
harness between the battery and the ABS
HU/CM terminal C
Open or short circuit in the ABS HU/CM
internal valve relay, or stuck valve relay
Poor connection at connectors (female
terminal)
2007 Mazda MX-5 Miata Sport
2007 BRAKES On-Board Diagnostic (ABS) - MX-5 Miata
Microsoft
Thursday, July 09, 2009 3:17:55 PM
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