Mazda CX 7. Manual - part 432

POWER SYSTEMS 

09-21–3

09-21

KEY REMINDER SWITCH INSPECTION

id092100801100

1. Disconnect the negative battery cable.
2. Remove the column cover. (See 09-17-8 COLUMN COVER REMOVAL/INSTALLATION.)
3. Disconnect the key reminder switch connector.
4. Inspect for continuity between the key reminder 

switch terminals using a tester.

• If there is any malfunciton, replace the key 

reminder switch.

End Of Sie

STEERING LOCK UNIT INSPECTION

id092100800500

1. Measure the voltage or inspect for continuity according to the Terminal Voltage Table (Reference).

• If the voltage is not as specified in the Terminal Voltage Table (Reference), inspect the parts under 

“Inspection item(s)” and related wiring harnesses.

2. If the system does not work properly even though the inspection items or related wiring harnesses do not have 

any malfunction, replace the steering look unit.

Terminal Voltage Table (Reference)

End Of Sie

WM: RELAY

A

B

A

B

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: Continuity 

Key position

Key inserted

Key removed

Terminal 

B

A

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*

*

D

C

E

F

*

G

I

*

L

K

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Terminal

Signal name

Connected to

Measured condition

Voltage (V)/

Continuity

Inspection item(s)

E

Push switch 
signal

Keyless control 
module

Start knob pressed

B+

• Keyless control module

• Related wiring harnesses

Start knob released

1.0 or less

F

Power supply

Fuse

Under any condition

B+

• Fuse

• Related wiring harnesses

G

Key reminder 
switch signal

Keyless control 
module

Key inserted

B+

• Keyless control module

• Related wiring harnesses

Key removed

1.0 or less

I

Power supply

Fuse

Under any condition

B+

• Fuse

• Related wiring harnesses

K

Serial 
communication

Keyless control 
module

Under any condition: Inspect 
for continuity to keyless 
control module.

Continuity 

detected

Related wiring harnesses

L

GND

Body ground

Under any condition: Inspect 
for continuity to GND.

Continuity 

detected

Related wiring harnesses

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POWER SYSTEMS 

09-21–4

RELAY LOCATION

id092100800600

.

End Of Sie

RELAY INSPECTION

id092100800300

Relay type

RELAY BLOCK

1

MAIN FUSE BLOCK

9

8

7

5

4

3

10

13

11

12

6

2

17

16

15

14

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1

Horn relay

2

A/C relay

3

Front fog light relay

4

Rear window defroster relay

5

TNS relay

6

Drive-by-wire relay

7

Headlight relay

8

Back-up light relay

9

Fuel pump relay

10

Starter relay No.2

11

Cooling fan relay No.2

12

Blower relay

13

Fuel pump speed control relay

14

Injector relay

15

Starter relay No.1

16

Main relay

17

Cooling fan relay No.1

Terminal type

Part name

4 

terminals

Type A

• Fuel pump relay

• Fuel pump speed control relay

• Starter relay No.2

• Injector relay

• Drive-by-wire relay

• A/C relay

• Rear window defroster relay

• TNS relay

• Front fog light relay

• Back-up light relay

• Horn relay

Type B

• Cooling fan relay No.1

• Cooling fan relay No.2

• Starter relay No.1

• Main relay

• Blower relay

• Headlight relay

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POWER SYSTEMS 

09-21–5

09-21

Type A

1. Verify the continuity between the relay terminals.

• If not as indicated in the table, replace the 

relay.

Type B

1. Verify the continuity between the relay terminals.

• If not as indicated in the table, replace the 

relay.

End Of Sie

C

A

A

E

C

D

E

D

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: Continuity

Step

1

2

Terminal

E

C

D

A

B+

GND

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A

B

D

E

A

B

D

E

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GND

B+

Step

1

2

Terminal

: Continuity

A

B

D

E

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