Nissan Titan A60. Manual - part 928

TM-100

< DTC/CIRCUIT DIAGNOSIS >

P1815 M-MODE SWITCH

1.

CHECK INPUT SIGNALS (WITH CONSULT-III)

With CONSULT-III

1. Start engine.

2. Select “MAIN SIGNALS” in “DATA MONITOR” mode for A/T with CONSULT-III 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-98, "Diagnosis Procedure"

.

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

GI-47, "Description"

.

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

Perform the self-diagnosis function.
• Refer to 

GI-47, "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-47, "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-101

< DTC/CIRCUIT DIAGNOSIS >

C

E

F

G

H

I

J

K

L

M

A

B

TM

N

O

P

MAIN POWER SUPPLY AND GROUND CIRCUIT

Diagnosis Procedure

INFOID:0000000006159407

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-102

< 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-36, "CONSULT-III 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-36, "CONSULT-III Function

(TRANSMISSION)"

.

6.

CHECK TERMINAL CORD ASSEMBLY

1. Remove control valve with TCM. Refer to 

TM-197, "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

MAIN POWER SUPPLY AND GROUND CIRCUIT

TM-103

< DTC/CIRCUIT DIAGNOSIS >

C

E

F

G

H

I

J

K

L

M

A

B

TM

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 

TM-197, "Control Valve with TCM"

.

NG

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

7.

DETECT MALFUNCTIONING ITEM (STEP 1)

Check the following items:

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

• 10A fuse [No. 3, located in the fuse block (J/B)]

• Battery
OK or NG

OK

>> GO TO 2.

NG

>> Repair or replace damaged parts.

8.

DETECT MALFUNCTIONING ITEM (STEP 2)

Check the following items:

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

• 10A fuse (No. 49, located in the IPDM E/R)

• IPDM E/R (Ignition relay)

• Ignition switch
OK or NG

OK

>> GO TO 4.

NG

>> Repair or replace damaged parts.

9.

CHECK TCM (TRANSMISSION CONTROL MODULE) RELAY

1. Disconnect TCM relay.

2. Check TCM relay. Refer to 

TM-104, "Component Inspection"

.

OK or NG

OK

>> GO TO 10.

NG

>> Repair or replace damaged parts.

10.

DETECT MALFUNCTIONING ITEM (STEP 3)

Check the following items:

• Harness for short or open between ignition switch and TCM relay harness connector terminal 2

• Harness for short or open between battery and TCM relay harness connector terminal 5

• Harness for open between TCM relay harness connector terminal 1 and ground

• Harness for short or open between TCM relay harness connector terminal 3 and A/T assembly harness con-

nector terminal 6

• 10A fuse [No. 4, located in the fuse block (J/B)] and 10A fuse (No. 49, located in the IPDM E/R)

• IPDM E/R (Ignition relay)

• Ignition switch
OK or NG

Item

 Connector

Terminal

Continuity

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

F9

5

Yes

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

F17

TCM connector 

F504

21

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

F9

10

Yes

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

F17

TCM connector 

F504

22

SCIA5465E