Fig. 7: Identifying PCM Harness Side Connectors
Courtesy of MAZDA MOTORS CORP.
PCM TERMINALS VOLTAGE SPECIFICATION TABLE
Terminal
Signal
Connected to
Test condition
Voltage (V) Inspection item
1A
-
-
-
-
-
1B
Starter relay
control
Starter relay
Under any condition
Below 1.0
Starter
relay
Related
wiring
harness
1C
-
-
-
-
-
1D
(2)
Clutch
operation
CPP switch
Clutch pedal depressed
Below 1.0
CPP
switch
Related
wiring
harness
Clutch pedal released
B+
1E
-
-
-
-
-
1F
-
-
-
-
-
1G
-
-
-
-
-
1H
Fuel pump
control
Fuel pump
relay
Ignition switch is turned to
the ON position (Engine
off) and a certain period has
elapsed
B+
Fuel pump
relay
Related
wiring
harness
Cranking
Below 1.0
Idle
Below 1.0
11
A/C
A/C relay
Engine
running
A/C
operating
Below 1.0
A/C relay
Related
wiring
harness
A/C not
operating
B+
Refrigerant pressure is more
than the specification.
Below 1.0
Refrigerant
pressure
2007 Mazda MX-5 Miata Sport
2007 ENGINE PERFORMANCE Engine Control System - MX-5 Miata
Microsoft
Thursday, July 09, 2009 2:41:09 PM
Page 8
© 2005 Mitchell Repair Information Company, LLC.