Mazda CX-9 Grand Touring. Manual - part 488

3. Remove in the order indicated in the table. 

Fig. 54: Identifying Auto Light-Off Control Module, Connector, Bolt & Torque Specifications 
Courtesy of MAZDA MOTORS CORP. 

4. Install in the reverse order of removal.  

AUTO LIGHT/WIPER CONTROL MODULE INSPECTION 

1. Measure the voltage at the auto light/wiper control module terminals as indicated below.  

TERMINAL VOLTAGE LIST (REFERENCE) 

Fig. 55: Identifying Auto Light/Wiper Control Module Connector Terminals 
Courtesy of MAZDA MOTORS CORP. 

CONNECTOR TERMINALS REFERENCE 

 

2008 Mazda CX-9 Grand Touring 

2008 BODY & ACCESSORIES Lighting Systems - Mazda CX-9

  

Microsoft 

 

Sunday, November 15, 2009 10:39:06 AM

Page 33 

© 2005 Mitchell Repair Information Company, LLC. 

Terminal

Signal

Connection

Test condition

Voltage 

(V)

Action

1A

(1)

RH 
headlight 
operation 
(high-beam)

RH headlight 
(high-beam)

Light 
switch at 
HEAD 
position

Dimmer 
switch at the 
high-beam 
position

B+



RH headlight  



Related wiring 
harnesses  

Dimmer 
switch at the 
low-beam 
position

1.0 or 
less

DRL mode

Approx 

6.0

1B

(1)

LH 
headlight 
operation 
(high-beam)

LH headlight 
(high-beam)

Light 
switch at 
HEAD 
position

Dimmer 
switch at the 
high-beam 
position

B+



LH headlight  



Related wiring 
harnesses  

Dimmer 
switch at the 
low-beam 
position

1.0 or 
less

DRL mode

Approx 

6.0

1C

Autostop 
switch signal

Autostop 
switch

Ignition 
switch at 
ON

Windshield 
wiper switch 
at LO position

B+



Autostop switch 
(Windshield wiper 
motor) (See 
WINDSHIELD 
WIPER MOTOR 
INSPECTION .)  



Related wiring 
harnesses  

Windshield 
wiper switch 
at OFF 
position

1.0 or 
less

1D

Windshield 
wiper switch 
signal (OFF)

Windshield 
wiper and 
washer switch

Ignition 
switch at 
ON

Windshield 
wiper switch 
at LO position

B+



Windshield wiper and 
washer switch (See 
WINDSHIELD 
WIPER AND 
WASHER SWITCH 
INSPECTION .)  



Related wiring 
harnesses  

Windshield 
wiper switch 
at OFF 
position

1.0 or 
less

1E

IG2

WIPER 30 A 
fuse

Ignition switch at ON

B+



WIPER 30 A fuse  



Related wiring 
harnesses  

Ignition switch at 
LOCK or ACC

1.0 or 
less

Windshield 
wiper switch 
at HI position

B+



Windshield wiper and 
washer switch (See 
WINDSHIELD 

 

2008 Mazda CX-9 Grand Touring 

2008 BODY & ACCESSORIES Lighting Systems - Mazda CX-9

  

Microsoft 

 

Sunday, November 15, 2009 10:39:06 AM

Page 34 

© 2005 Mitchell Repair Information Company, LLC. 

1F

Windshield 
wiper switch 
signal (HI)

Windshield 
wiper and 
washer switch

Ignition 
switch at 
ON

Windshield 
wiper switch 
at OFF 
position

1.0 or 
less

WIPER AND 
WASHER SWITCH 
INSPECTION .)  



Related wiring 
harnesses  

1G

(1)

GND

GND

Under any condition

1.0 or 

less



Related wiring 
harnesses  

1H

Windshield 
wiper switch 
signal 
(AUTO)

Windshield 
wiper and 
washer switch

Ignition 
switch at 
ON

Windshield 
wiper switch 
at AUTO 
position

B+



Windshield wiper and 
washer switch (See 
WINDSHIELD 
WIPER AND 
WASHER SWITCH 
INSPECTION .)  



Related wiring 
harnesses  

Windshield 
wiper switch 
at OFF 
position

1.0 or 
less

1I

(1)

Power 
supply

HEAD LIGHT 
20 A fuse

Constant

B+



HEAD LIGHT 20 A 
fuse  



Related wiring 
harnesses  

1J

Washer 
switch signal

Windshield 
wiper and 
washer switch

Ignition 
switch at 
ON

Washer switch 
at ON position

B+



Windshield wiper and 
washer switch (See 
WINDSHIELD 
WIPER AND 
WASHER SWITCH 
INSPECTION .)  



Related wiring 
harnesses  

Washer switch 
at OFF 
position

1.0 or 
less

1K

(1)

LH 
headlight 
operation 
(high-beam)

LH headlight 
(high-beam)

Light 
switch at 
the OFF 
position

Ignition 
switch at ON 
position

B+



LH headlight  



Related wiring 
harnesses  

Ignition 
switch LOCK 
or ACC 
position

1.0 or 
less

1L

(1)

High-beam 
on/off

Light switch

Ignition 
switch at 
ON

Dimmer 
switch at high-
beam position

1.0 or 

less



Light switch (See 
LIGHT SWITCH 
INSPECTION.)  



Related wiring 
harnesses  

Dimmer 
switch at low-
beam position

B+

Vehicle 

Instrument 

Because this terminal is 
for communication, 



Instrument cluster (See 
INSTRUMENT 
CLUSTER 

 

2008 Mazda CX-9 Grand Touring 

2008 BODY & ACCESSORIES Lighting Systems - Mazda CX-9

  

Microsoft 

 

Sunday, November 15, 2009 10:39:06 AM

Page 35 

© 2005 Mitchell Repair Information Company, LLC. 

2A

speed signal 
input

cluster

good/no good judgment 
by terminal voltage is 
not possible.

-

INPUT/OUTPUT 
CHECK MODE .)  



Related wiring 
harnesses  

2B

Sensitivity 
adjustment 
volume

Windshield 
wiper and 
washer switch

Ignition 
switch at 
ON

Sensitivity 
adjustment 
volume turned 
from + 
position to - 
position

0 --> 0.8 

--> 1.5 --

> 1.9 --> 

2.2



Windshield wiper and 
washer switch (See 
WINDSHIELD 
WIPER AND 
WASHER SWITCH 
INSPECTION .)  



Related wiring 
harnesses  

2C

IG 1

METER 10 A 
fuse

Ignition switch at ON

B+



METER 10 A fuse  



Related wiring 
harnesses  

Ignition switch at 
LOCK or ACC

1.0 or 
less

2D

Power 
supply



BCM  



ROOM 
15 A 
fuse  

Constant

B+



BCM (See BODY 
CONTROL 
MODULE (BCM) 
INSPECTION .)  



ROOM 15 A fuse  



Related wiring 
harnesses  

2E

Wiper or 
headlight 
operation 
request

Rain sensor

Because this terminal is 
for communication, 
good/no good judgment 
by terminal voltage is 
not possible.

-



Rain sensor  



Related wiring 
harnesses  

2F

DLC-2 
power 
supply

DLC-2

Under any condition

B+



Related wiring 
harnesses  

2G

TNS relay 
operation

TNS relay

Light switch at low-
beam or high-beam 
position

Below 

1.5



TNS relay (See 
RELAY 
INSPECTION .)  



Related wiring 
harnesses  

Light switch at OFF

B+

2H

Rain sensor 
operation 
request

Rain sensor

Because this terminal is 
for communication, 
good/no good judgment 
by terminal voltage is 
not possible.

-



Rain sensor  



Related wiring 
harnesses  

2K

H/L LOW 
relay 

H/L LOW 

Light switch at high-
beam position

Below 

1.5



H/L LOW relay (See 
RELAY 
INSPECTION .)  

 

2008 Mazda CX-9 Grand Touring 

2008 BODY & ACCESSORIES Lighting Systems - Mazda CX-9

  

Microsoft 

 

Sunday, November 15, 2009 10:39:06 AM

Page 36 

© 2005 Mitchell Repair Information Company, LLC.