Infiniti G37 Coupe. Manual - part 1327

P1815 MANUAL MODE SWITCH

TM-161

< COMPONENT DIAGNOSIS >

[5AT: RE5R05A]

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2.

Disconnect unified meter and A/C amp. connector.

3.

Check continuity between paddle shifter vehicle side harness connector terminals and unified meter and
A/C amp. vehicle side harness connector terminals.

Is the inspection result normal?

YES

>> GO TO 15.

NO

>> Repair or replace damaged parts.

15.

CHECK HARNESS BETWEEN PADDLE SHIFTER AND UNIFIED METER AND A/C AMP. (STEP 2)

Check continuity between paddle shifter vehicle side harness connector terminals and ground.

Is the inspection result normal?

YES

>> GO TO 16.

NO

>> Repair or replace damaged parts.

16.

CHECK MALFUNCTIONING ITEM

Check the following.
• Check terminals of unified meter and A/C amp. connector for damage.
• Check connector for loose connection.

Is the inspection result normal?

YES

>> GO TO 17.

NO

>> Repair or replace damaged parts.

17.

CHECK UNIFIED METER AND A/C AMP.

1.

Reconnect all the connectors.

2.

Turn ignition switch ON.

3.

Select “M RANGE SW”, “NM RANGE SW”, “AT SFT UP SW”, “AT SFT DWN SW”, “ST SFT UP SW”* and
“ST SFT DWN SW”* on “DATA MONITOR” mode for “METER/M&A”, and check the On/Off operations of
each monitor item. Refer to 

MWI-83, "Reference Value"

.

*: With paddle shifter

Is the inspection result normal?

YES

>> GO TO 18.

NO

>> Replace unified meter and A/C amp. Refer to 

MWI-162, "Exploded View"

.

18.

CHECK TCM POWER SUPPLY AND GROUND CIRCUIT

Check TCM power supply and ground circuit. Refer to 

TM-163, "Diagnosis Procedure"

.

Is the inspection result normal?

YES

>> Replace the control valve with TCM. Refer to 

TM-232, "Exploded View"

.

NO

>> Repair or replace damaged parts.

Component Inspection (Manual Mode Switch)

INFOID:0000000001672204

1.

CHECK MANUAL MODE SWITCH

Check continuity between terminals.

Paddle shifter vehicle side harness connector

Unified meter and A/C amp. vehicle side harness 

connector

Continuity

Connector

Terminal

Connector

Terminal

M32

3

M66

26

Existed

M39

3

6

Paddle shifter vehicle side harness connector

Ground

Continuity

Connector

Terminal

M32

3

Not existed

M39

3

TM-162

< COMPONENT DIAGNOSIS >

[5AT: RE5R05A]

P1815 MANUAL MODE SWITCH

Is the inspection result normal?

YES

>> INSPECTION END

NO

>> Repair or replace damaged parts. Refer to 

TM-227, "Exploded View"

.

Component Inspection (Paddle Shifter)

INFOID:0000000001672205

1.

CHECK PADDLE SHIFTER

Check continuity between terminals.

Is the inspection result normal?

YES

>> INSPECTION END

NO

>> Replace damaged parts. Refer to 

TM-230, "Exploded View"

.

A/T device harness connector

Condition

Continuity

Connector Terminal

M137

1

4

Selector lever: Manual (Neutral)

Existed

Other than the above

Not existed

2

Selector lever: DOWN (

−

 side)

Existed

Other than the above

Not existed

3

Selector lever: UP (+ side)

Existed

Other than the above

Not existed

5

Selector lever: Auto

Existed

Other than the above

Not existed

Paddle shifter (shift-up) connector

Condition

Continuity

Connector

Terminal

M39

1

3

UP (+ side)

Existed

Other than the above

Not existed

Paddle shifter (shift-down) connector

Condition

Continuity

Connector

Terminal

M32

1

3

DOWN (

−

 side)

Existed

Other than the above

Not existed

MAIN POWER SUPPLY AND GROUND CIRCUIT

TM-163

< COMPONENT DIAGNOSIS >

[5AT: RE5R05A]

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MAIN POWER SUPPLY AND GROUND CIRCUIT

Description

INFOID:0000000001672206

Supply power to TCM.

Diagnosis Procedure

INFOID:0000000001672207

1.

CHECK TCM POWER SOURCE

1.

Turn ignition switch OFF.

2.

Disconnect A/T assembly harness connector.

3.

Turn ignition switch ON.

4.

Check voltage between A/T assembly vehicle side harness connector terminals.

Is the inspection result normal?

YES

>> GO TO 4.

NO

>> GO TO 2.

2.

CHECK TCM GROUND CIRCUIT

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

Is the inspection result normal?

YES

>> GO TO 3.

NO

>> Repair or replace damaged parts.

3.

CHECK TCM POWER SOURCE CIRCUIT

Check voltage between A/T assembly vehicle side harness connector terminals and ground.

Is the inspection result normal?

YES

>> GO TO 4.

NO

>>

Check the following. If NG, repair or replace damaged parts. 

• Harness for short or open between battery and A/T assembly vehicle side harness connector

terminals 1, 2.

• Harness for short or open between ignition switch and A/T assembly vehicle side harness con-

nector terminal 6.

• 10A fuse (No. 36, located in the fuse, fusible link and relay box)

A/T assembly vehicle side harness connector

Voltage (Approx.)

Connector

Terminal

F51

1

5 

Battery voltage

10

2

5 

10

6

5 

10

A/T assembly vehicle side harness connector

Ground

Continuity

Connector

Terminal

F51

5

Existed

10

A/T assembly vehicle side harness connector

Ground

Voltage (Approx.)

Connector

Terminal

F51

1

Battery voltage

2

6

TM-164

< COMPONENT DIAGNOSIS >

[5AT: RE5R05A]

MAIN POWER SUPPLY AND GROUND CIRCUIT

• 10A fuse (No. 43, located in the IPDM E/R)
• Push-button ignition switch. Refer to 

PG-50, "Wiring Diagram - IGNITION POWER SUPPLY -"

.

4.

DETECT MALFUNCTIONING ITEM (STEP 1)

Check the following.
• Check terminals of A/T assembly connector for damage.
• Check connector for loose connection.

Is the inspection result normal?

YES

>> GO TO 5.

NO

>> Repair or replace damaged parts.

5.

CHECK TERMINAL CORD ASSEMBLY

1.

Remove control valve with TCM. Refer to 

TM-232, "Exploded View"

.

2.

Disconnect TCM connector.

3.

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

Is the inspection result normal?

YES

>> GO TO 6.

NO

>> Repair or replace damaged parts.

6.

DETECT MALFUNCTIONING ITEM (STEP 2)

Check the following.
• Check terminals of TCM connector and harness cladding for damage.
• Check connector for loose connection.

Is the inspection result normal?

YES

>> INSPECTION END

NO

>> Repair or replace damaged parts.

A/T assembly harness connector

TCM connector

Continuity

Connector

Terminal

Connector

Terminal

F51

1

F151

9

Existed

2

10

6

4

5

F153

21

10

22