Nissan Titan. Manual - part 605

P1815 M-MODE SWITCH

TM-103

< DTC/CIRCUIT DIAGNOSIS >

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Drive vehicle in the manual mode, and confirm that the actual gear position and the meter's indication of the

position mutually coincide when the selector lever is shifted to the “+ (up)” or “- (down)” side (1GR 

⇔ 5GR).

OK or NG

OK

>> GO TO 6.

NG

>> GO TO 3.

3.

DETECT MALFUNCTIONING ITEM

Check the following items.

• Manual mode switch. Refer to 

TM-103, "Component Inspection"

.

• Pin terminals for damage or loose connection with harness connector.

• Open circuit or short to ground or short to power in harness or connector for A/T shift selector (manual mode

switch).

OK or NG

OK

>> GO TO 4.

NG

>> Repair or replace damaged parts.

4.

CHECK TCM

Perform TCM input/output signal inspection. Refer to 

TM-120, "Reference Value"

.

OK or NG

OK

>> GO TO 6.

NG

>> GO TO 5.

5.

DETECT MALFUNCTIONING ITEM

Check the following items:

• Power supply and ground circuit for TCM.

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

OK

>> Replace the transmission assembly. Refer to 

TM-211, "Removal and Installation (2WD)"

, 

TM-213,

"Removal and Installation (4WD)"

.

NG

>> Repair or replace damaged parts.

6.

CHECK DTC

Perform DTC Confirmation Procedure.

• Refer to 

TM-102, "DTC Confirmation Procedure"

.

OK or NG

OK

>> INSPECTION END

NG

>> GO TO 4.

Component Inspection

INFOID:0000000009885864

MANUAL MODE SWITCH

Check continuity between A/T shift selector connecotr terminals.

Position Indicator Lamp

INFOID:0000000009885865

DIAGNOSTIC PROCEDURE

Item

Position

Terminal No.

(Unit side)

Continuity

Manual mode (se-
lect) switch

Manual

2 - 6

Yes

UP switch

UP

2 - 4

DOWN switch

DOWN

2 - 5

JSDIA1486ZZ

TM-104

< DTC/CIRCUIT DIAGNOSIS >

P1815 M-MODE SWITCH

1.

CHECK INPUT SIGNALS (WITH CONSULT)

With CONSULT

1. Start engine.

2. Select “MAIN SIGNALS” in “DATA MONITOR” mode for A/T with CONSULT and read out the value of

“GEAR”.

3. Drive vehicle in the manual mode, and confirm that the actual gear position and the meter's indication of

the position mutually coincide when the select lever is shifted to the “+ (up)” or “- (down)” side (1GR 

⇔

5GR).

 OK or NG

OK

>> INSPECTION END

NG

>> Check the following items.

Position Indicator Lamp Symptom Chart

Items

Presumed Location of Trouble

The actual gear position does not change, or shifting into the man-
ual mode is not possible (no gear shifting in the manual mode pos-
sible).
The position indicator lamp is not indicated.

Manual mode switch 
Refer to 

TM-102, "Diagnosis Procedure"

.

A/T main system (Fail-safe function actuated)
• Refer to 

GI-50, "Description"

.

The actual gear position changes, but the position indicator lamp 
is not indicated.

Perform the self-diagnosis function.
• Refer to 

GI-50, "Description"

.

The actual gear position and the indication on the position indica-
tor lamp do not coincide.

Perform the self-diagnosis function.
• Refer to 

GI-50, "Description"

.

Only a specific position or positions is/are not indicated on the po-
sition indicator lamp.

Check the combination meter.
Refer to 

MWI-19, "SHIFT POSITION INDICATOR : System De-

scription"

.

MAIN POWER SUPPLY AND GROUND CIRCUIT

TM-105

< DTC/CIRCUIT DIAGNOSIS >

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MAIN POWER SUPPLY AND GROUND CIRCUIT

Diagnosis Procedure

INFOID:0000000009885866

1.

CHECK TCM POWER SOURCE (PART 1)

1. Turn ignition switch OFF.

2. Disconnect A/T assembly connector.

3. Check voltage between A/T assembly harness connector termi-

nals and ground.

OK or NG

OK

>> GO TO 2.

NG

>> GO TO 7.

2.

CHECK TCM POWER SOURCE (PART 2)

1. Turn ignition switch ON. (Do not start engine.)

2. Check voltage between A/T assembly harness connector termi-

nals and ground.

OK or NG

OK

>> GO TO 3.

NG (Floor shift)>>GO TO 8.

NG (Column shift)>>GO TO 9.

3.

CHECK TCM GROUND CIRCUIT

1. Turn ignition switch OFF.

Item

Connector

Terminal

Voltage

A/T assembly harness con-

nector (floor shift)

F9

1 - Ground

Battery voltage

2 - Ground

6 - Ground

0 V

Item

Connector

Terminal

Voltage

A/T assembly harness con-

nector (column shift)

F17

1 - Ground

Battery voltage

2 - Ground

6 - Ground

0 V

SCIA2104E

Item

Connector

Terminal

Voltage

A/T assembly harness con-

nector (floor shift)

F9

1 - Ground

Battery voltage

2 - Ground

6 - Ground

Item

Connector

Terminal

Voltage

A/T assembly harness con-

nector (column shift)

F17

1 - Ground

Battery voltage

2 - Ground

6 - Ground

SCIA2105E

TM-106

< DTC/CIRCUIT DIAGNOSIS >

MAIN POWER SUPPLY AND GROUND CIRCUIT

2. Check continuity between A/T assembly harness connector ter-

minals and ground.

OK or NG

OK

>> GO TO 4.

NG

>> Repair or replace damaged parts.

4.

DETECT MALFUNCTIONING ITEM

Check the following items:

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

OK

>> GO TO 5.

NG

>> Repair or replace damaged parts.

5.

PERFORM SELF-DIAGNOSIS

Perform self-diagnosis. Refer to 

TM-38, "CONSULT Function (TRANSMISSION)"

.

OK or NG

OK

>> INSPECTION END

NG-1 >> Self-diagnosis does not activate: GO TO 6.

NG-2 >> DTC is displayed: Check the malfunctioning system. Refer to 

TM-38, "CONSULT Function

(TRANSMISSION)"

.

6.

CHECK TERMINAL CORD ASSEMBLY

1. Remove control valve with TCM. Refer to 

TM-201, "Control Valve with TCM"

.

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.

Item

Connector

Terminal

Continuity

A/T assembly harness con-

nector (floor shift)

F9

5 - Ground

Yes

10 - Ground

Item

Connector

Terminal

Voltage

A/T assembly harness con-

nector (column shift)

F17

5 - Ground

Yes

10 - Ground

SCIA2106E

Item

 Connector

Terminal

Continuity

A/T assembly harness con-
nector (floor shift)

F9

1 

Yes

A/T assembly harness con-
nector (column shift)

F17

TCM connector 

F502

9

A/T assembly harness con-
nector (floor shift)

F9

2

Yes

A/T assembly harness con-
nector (column shift)

F17

TCM connector 

F502

10

A/T assembly harness con-
nector (floor shift)

F9

6

Yes

A/T assembly harness con-
nector (column shift)

F17

TCM connector 

F502

4

SCIA5464E