Mazda MX-6 1998, Workshop Manual

Page: 1267 / 1282

CONTROL SYSTEM
Terminals 4B and 4D of connector D
• Disconnect the CPU connector before checking
for continuity at terminals 4B and 4D as shown in
the figure.
W 6 U 9 4 0 W A 2
Terminal Voltage List (Reference)
CONNECTOR A
Terminals except 4B and 4D of connector D
• Measure the voltage at the CPU connector while it
is connected with the CPU as shown in the figure.
W 6 U 9 4 0 W A 3
5. If not as specified, inspect the parts listed under
“ Inspection area” and the related wiring
harnesses.
6. If the parts and wiring harnesses are okay but
system still does not work properly, replace the
CPU.
CONNECTOR B
20 2M 2K 2! 2G 2E 2C 2A
2 P 2N 2L
2J 2H 2F 2D 2B
CONNECTOR C
31
Ö CO
3A
3J
L
L
CO
I CO
3D 3B
CONNECTOR D
4M 4K
4E 4C 4A
4N 4L 4J 4H
4F 4D 4B
W 6 U 9 4 0 W A 4
Terminal Signal Connection
Test condition
Voltage (V)/
Continuity
Inspection area
1A
Trunk lid
open/closed
• Trunk
compartment
light
• Trunk
compartment
light switch
Trunk lid open 0
• ROOM 15 A fuse
• Trunk
compartment light
• Trunk
compartment light
switch
Trunk lid closed B+
1B
Key inserted/
removed
Key reminder
switch
Key inserted into steering lock B+
• ROOM 15 A fuse
• Key reminder
switch
Key removed from steering lock 0
1C ACC RADIO 15 A fuse
Ignition switch at ACC or ON B+
RADIO 15 A fuse
Ignition switch at LOCK 0
1D
Brake system
warning light
operation
• Brake system
warning light
• Brake fluid level
sensor
Ignition switch
at ON
Brake fluid
level is below
MIN.
0
• METER 10 A
fuse
• Instrument cluster
• Brake fluid level
sensor
Brake fluid
level is above
MIN.
B+
1E
Rear window
defroster indicator
light operation
Rear window
defroster indicator
light
Ignition switch at ON B+
• METER 10 A
fuse
• Instrument cluster
Ignition switch at LOCK or ACC
0
1
F
Interior light
operation
Interior light
Interior light switch at Door B+
• ROOM 15 A fuse
• Interior light
Interior light switch at ON or OFF
0
0 9 -4 0 -2