Infiniti FX35 / FX45. Manual - part 58

AT-160

< SERVICE INFORMATION >

MAIN POWER SUPPLY AND GROUND CIRCUIT

MAIN POWER SUPPLY AND GROUND CIRCUIT

Wiring Diagram - AT - MAIN

INFOID:0000000001327351

TCWM0497E

MAIN POWER SUPPLY AND GROUND CIRCUIT

AT-161

< SERVICE INFORMATION >

D

E

F

G

H

I

J

K

L

M

A

B

AT

N

O

P

TCM terminals and data are reference value. Measured between each terminal and ground.

Diagnosis Procedure

INFOID:0000000001327352

1.

CHECK TCM POWER SOURCE STEP 1

1.

Turn ignition switch OFF.

2.

Disconnect A/T assembly harness connector.

3.

Check voltage between A/T assembly harness connector termi-
nals and ground.

OK or NG

OK

>> GO TO 2.

NG

>> GO TO 3.

2.

CHECK TCM POWER SOURCE STEP 2

1.

Disconnect A/T assembly harness connector.

2.

Turn ignition switch ON.

3.

Check voltage between A/T assembly harness connector termi-
nals and ground.

OK or NG

OK

>> GO TO 4.

NG

>> GO TO 3.

3.

DETECT MALFUNCTIONING ITEM

Check the following.
• Harness for short or open between battery and A/T assembly harness connector F44 terminals 1, 2
• Harness for short or open between ignition switch and A/T assembly harness connector F44 terminal 6
• 10 A fuse (No. 37, located in the fuse and fusible link block) and 10 A fuse (No. 83, located in the IPDM E/R)
• Ignition switch, Refer to 

PG-3

.

OK or NG

OK

>> GO TO 4.

Terminal

Wire 

color

Item

Condition

Data (Approx.)

1

LG

Power supply
(Memory back-up)

Always

Battery voltage

2

LG

Power supply
(Memory back-up)

Always

Battery voltage

5

B

Ground

Always

0 V

6

Y

Power  supply

–

Battery voltage

–

0  V

10

B

Ground

Always

0 V

Item

Connector

Terminal

Voltage

TCM

F44

1 - Ground

Battery voltage

2 - Ground

6 - Ground

0 V

SCIA2104E

Item

Connector

Terminal

Voltage

TCM

F44

1 - Ground

Battery voltage

2 - Ground

6 - Ground

SCIA2105E

AT-162

< SERVICE INFORMATION >

MAIN POWER SUPPLY AND GROUND CIRCUIT

NG

>> Repair or replace damaged parts.

4.

CHECK TCM GROUND CIRCUIT

1.

Turn ignition switch OFF.

2.

Disconnect A/T assembly harness connector.

3.

Check continuity between A/T assembly harness connector F44
terminals and ground.

If OK, check harness for short to ground and short to power.

OK or NG

OK

>> GO TO 5.

NG

>> Repair open circuit or short to ground or short to power

in harness or connectors.

5.

DETECT MALFUNCTIONING ITEM

Check A/T assembly harness connector pin terminals for damage or loose connection with harness connector.
OK or NG

OK

>> GO TO 6.

NG

>> Repair or replace damaged parts.

6.

PERFORM SELF-DIAGNOSIS

Perform self-diagnosis.

OK or NG

OK

>> INSPECTION END

NG-1

>> Self-diagnosis does not activate: GO TO 7.

NG-2

>> DTC is displayed: Check the malfunctioning system. Refer to 

AT-84, "CONSULT-III Function

(TRANSMISSION)"

.

7.

CHECK TERMINAL CORD ASSEMBLY

1.

Remove control valve with TCM. Refer to 

AT-215, "Control Valve with TCM and A/T Fluid Temperature

Sensor 2"

.

2.

Disconnect A/T assembly harness connector and TCM connector.

3.

Check continuity between A/T assembly harness connector ter-
minals and TCM connector terminals.

Continuity should exist.

SCIA2106E

Item

 Connector

Terminal

Continuity

A/T assembly harness con-
nector

F44

1

Yes

TCM connector 

F502

9

A/T assembly harness con-
nector

F44

2

Yes

TCM connector 

F502

10

A/T assembly harness con-
nector

F44

6

Yes

TCM connector 

F502

4

SCIA5464E

MAIN POWER SUPPLY AND GROUND CIRCUIT

AT-163

< SERVICE INFORMATION >

D

E

F

G

H

I

J

K

L

M

A

B

AT

N

O

P

4.

Check continuity between A/T assembly harness connector ter-
minals and TCM connector terminals.

5.

If OK, check harness for short to ground and short to power.

OK or NG

OK

>> Replace the control valve with TCM. Refer to 

AT-215, "Control Valve with TCM and A/T Fluid Tem-

perature Sensor 2"

.

NG

>> Replace open circuit or short to ground and short to power in harness or connectors.

Item

 Connector

Terminal

Continuity

A/T assembly harness con-
nector

F44

5

Yes

TCM connector 

F504

21

A/T assembly harness con-
nector

F44

10

Yes

TCM connector 

F504

22

SCIA5465E