4
INSPECT ABS HU/CM
POWER SUPPLY FOR
OPEN CIRCUIT
Start the engine.
Measure the voltage
between ABS HU/CM
terminal J and ground.
Is the voltage
approx.
10 V?
Yes
Go to the next step.
No
Repair or replace the wiring harness for
open circuit between the ABS HU/CM
and ground, then go to Step 6.
5
INSPECT ABS HU/CM
GROUND FOR POOR
GROUND OR OPEN
CIRCUIT
Turn the ignition
switch off.
Measure the resistance
between ground and
ABS HU/CM terminal
D.
Is the resistance within
0-1 ohm?
Yes
Go to the next step.
No
If there is no continuity.
Repair or replace the wiring
harness for open circuit between
the ABS HU/CM and ground,
then go to the next step.
If the resistance is not within
0-1 ohm:
Repair or replace harness for
poor ground, then go to the next
step.
6
VERIFY
TROUBLESHOOTING
COMPLETED
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.
Is the same DTC
present?
Yes
Replace the ABS HU/CM, then go to
the next step.
(See
ABS HU/CM
REMOVAL/INSTALLATION
.)
No
Go to the next step.
7
VERIFY AFTER REPAIR
PROCEDURE
Yes
Go to the applicable DTC inspection.
(See
DTC Table
.)
2007 Mazda MX-5 Miata Sport
2007 BRAKES On-Board Diagnostic (ABS) - MX-5 Miata
Microsoft
Thursday, July 09, 2009 3:17:55 PM
Page 12
© 2005 Mitchell Repair Information Company, LLC.