Infiniti G35 (V35). Manual - part 45

DTC P1846 ATF PRESSURE SWITCH 6

AT-171

D

E

F

G

H

I

J

K

L

M

A

B

AT

Diagnostic Procedure

NCS000HN

1. 

CHECK INPUT SIGNAL

 With CONSULT-II

1.

Start the engine.

2.

Select “ECU INPUT SIGNALS” or “MAIN SIGNALS” in “DATA
MONITOR” mode for “A/T” with CONSULT-II.

3.

Drive vehicle in the “D” position (2nd 

Þ

 3rd gear), and confirm

the ON/OFF actuation of the “ATF PRES SW 6”.

OK or NG

OK

>> GO TO 4.

NG

>> GO TO 2.

2. 

CHECK TCM POWER SUPPLY AND GROUND CIRCUIT

Check TCM power supply and ground circuit. Refer to 

AT-172, "MAIN POWER SUPPLY AND GROUND CIR-

CUIT"

 .

OK or NG

OK

>> GO TO 3.

NG

>> Repair or replace damaged parts.

3. 

DETECT MALFUNCTIONING ITEM

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

OK or NG

OK

>> Replace control valve with TCM. Refer to 

AT-225, "Control Valve with TCM and A/T Fluid Temper-

ature Sensor 2"

 .

NG

>> Repair or replace damaged parts.

4. 

CHECK DTC

Perform 

AT-170, "DTC Confirmation Procedure"

 .

OK or NG

OK

>> INSPECTION END

NG

>> GO TO 2.

Item name

Condition 

Display value

ATF PRES SW 6

High and low reverse clutch engaged. 
Refer to 

AT-19

 .

ON

High and low reverse clutch disengaged. 
Refer to 

AT-19

 .

OFF

PCIA0067E

AT-172

MAIN POWER SUPPLY AND GROUND CIRCUIT

MAIN POWER SUPPLY AND GROUND CIRCUIT

PFP:00100

Wiring Diagram — AT — MAIN

NCS000HO

TCWM0410E

MAIN POWER SUPPLY AND GROUND CIRCUIT

AT-173

D

E

F

G

H

I

J

K

L

M

A

B

AT

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

Diagnostic Procedure

NCS000HP

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 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 and
ground.

OK or NG

OK

>> GO TO 4.

NG

>> GO TO 3.

Terminal

Wire 

color

Item

Condition

Data (Approx.)

1

R/W

Power supply
(Memory back-up)

Always

Battery voltage

2

R/W

Power supply
(Memory back-up)

Always

Battery voltage

5

B

Ground

Always

0 V

6

Y/R

Power supply

–

Battery voltage

–

0  V

10

B

Ground

Always

0 V

Item

Connector

Terminal

Voltage

TCM

F40

1 - Ground

Battery voltage

2 - Ground

6 - Ground

0V

SCIA2104E

Item

Connector

Terminal

Voltage

TCM

F40

1- Ground

Battery voltage

2 - Ground

6 - Ground

SCIA2105E

AT-174

MAIN POWER SUPPLY AND GROUND CIRCUIT

3. 

DETECT MALFUNCTIONING ITEM

Check the following.

●

Harness for short or open between battery and A/T assembly harness connector terminals 1, 2

●

Harness for short or open between ignition switch and A/T assembly harness connector terminal 6

●

10 A fuse (No.32, 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, "POWER SUPPLY ROUTING CIRCUIT"

 .

OK or NG

OK

>> GO TO 4.

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 ter-
minals 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 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. Refer to 

AT-86, "SELF-DIAGNOSTIC RESULT MODE"

 .

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-86, "SELF-DIAGNOSTIC

RESULT MODE"

 .

Continuity should exist.

SCIA2106E