Content .. 607 608 609 610 ..

Nissan Titan. Manual - part 609

4TH POSITION SWITCH

TM-119

< DTC/CIRCUIT DIAGNOSIS >

3. Check continuity between A/T shift selector connector terminals.

OK or NG

>> GO TO 4.

>> Repair or replace overdrive control switch.

DETECT MALFUNCTIONING ITEM

Check the following. If any items are damaged, repair or replace damaged parts.

• Harness for short or open between combination meter connector terminal 5 and A/T shift selector connector

terminal 1.

• Harness for short or open between A/T shift selector connector terminal 2 and ground.
OK or NG

>> GO TO 5.

>> Repair or replace damaged parts.

CHECK COMBINATION METER

Check the combination meter. Refer to

MWI-27, "Diagnosis Description"

OK or NG

>> INSPECTION END

>> Repair or replace damaged parts.

Item

Connector

Terminal

Condition

Continuity

4th position

switch

M203

1 - 2

When setting the
selector lever to
“4” and “3” posi-
tions.

Yes

When setting the
selector lever to
other positions.

JSDIA1490ZZ

TM-120

< ECU DIAGNOSIS INFORMATION >

TCM

ECU DIAGNOSIS INFORMATION

TCM

Reference Value

INFOID:0000000009885882

REFERENCE VALUES

NOTICE:

1. The CONSULT electrically displays shift timing and lock-up timing (that is, operation timing of each sole-

noid).

Check for time difference between actual shift timing and the CONSULT display. If the difference is notice-

able, mechanical parts (except solenoids, sensors, etc.) may be malfunctioning. Check mechanical parts

using applicable diagnostic procedures.

2. Shift schedule (which implies gear position) displayed on CONSULT and that indicated in Service Manual

may differ slightly. This occurs because of the following reasons:

Actual shift schedule has more or less tolerance or allowance,

Shift schedule indicated in Service Manual refers to the point where shifts start, and

Gear position displayed on CONSULT indicates the point where shifts are completed.

3. Display of solenoid valves on CONSULT changes at the start of shifting, while gear position is displayed

upon completion of shifting (which is computed by TCM).

Item name

Condition

Display value (Approx.)

ATF TEMP SE 1

°C (32° F) - 20°C (68°F) - 80°C (176°F)

3.3 - 2.7 - 0.9 V

TCC SOLENOID

When perform slip lock-up

0.2 - 0.4 A

When perform lock-up

0.4 - 0.6 A

SLCT LVR POSI

Selector lever in “N”,“P” position.

N/P

Selector lever in “R” position.

Selector lever in “D” position.

Selector lever in “4” position.

Selector lever in “3” position.

Selector lever in “2” position.

Selector lever in “1” position.

VHCL/S SE·A/T

During driving

Approximately matches the
speedometer reading.

ENGINE SPEED

Engine running

Closely matches the tachometer
reading.

LINE PRES SOL

During driving

0.2 - 0.6 A

INPUT SPEED

During driving (lock-up ON)

Approximately matches the en-
gine speed.

VHCL/S SE·MTR

During driving

Approximately matches the
speedometer reading.

ATF PRES SW 2

Low coast brake engaged. Refer to

TM-11

Low coast brake disengaged. Refer to

TM-11

OFF

I/C SOLENOID

Input clutch disengaged. Refer to

TM-11

0.6 - 0.8 A

Input clutch engaged. Refer to

TM-11

0 - 0.05 A

FR/B SOLENOID

Front brake engaged. Refer to

TM-11

0.6 - 0.8 A

Front brake disengaged. Refer to

TM-11

0 - 0.05 A

D/C SOLENOID

Direct clutch disengaged. Refer to

TM-11

0.6 - 0.8 A

Direct clutch engaged. Refer to

TM-11

0 - 0.05 A

HLR/C SOL

High and low reverse clutch disengaged. Refer to

TM-11

0.6 - 0.8 A

High and low reverse clutch engaged. Refer to

TM-11

0 - 0.05 A

TCM

TM-121

< ECU DIAGNOSIS INFORMATION >

TERMINAL LAYOUT

PHYSICAL VALUES

Data are reference value and are measured between each terminal and ground.

ON OFF SOL

Low coast brake engaged. Refer to

TM-11

Low coast brake disengaged. Refer to

TM-11

OFF

STARTER RELAY

Selector lever in “N”,“P” position.

Selector lever in other position.

OFF

ACCELE POSI

Released accelerator pedal.

0.0/8

Fully depressed accelerator pedal.

8/8

CLSD THL POS

Released accelerator pedal.

Fully depressed accelerator pedal.

OFF

W/O THL POS

Fully depressed accelerator pedal.

Released accelerator pedal.

OFF

BRAKESW

Depressed brake pedal.

Released brake pedal.

OFF

OD CONT SW

When setting the selector lever to “4” and “3” positions.

When setting the selector lever to other positions.

OFF

1 POSITION SW

When setting the selector lever to “1” position.

When setting the selector lever to other positions.

OFF

Item name

Condition

Display value (Approx.)

AWDIA0348ZZ

Terminal

No.

Wire

color

Item

Condition

Data (Pyrex.)

Power supply
(Memory back-up)

Always

Battery voltage

Power supply
(Memory back-up)

Always

Battery voltage

CAN-H

–

G/W

K-line (CONSULT
signal)

The terminal is connected to the data link connector for CONSULT.

–

Ground

Always

Y/R

Power supply

–

Battery voltage

–

Back-up lamp re-
lay

Selector lever in “R” position.

Selector lever in other positions.

Battery voltage

CAN-L

–

TM-122

< ECU DIAGNOSIS INFORMATION >

TCM

Fail-Safe

INFOID:0000000009885883

The TCM has an electrical fail-safe mode. This mode makes it possible to operate even if there is an error in a

main electronic control input/output signal circuit.

The TCM has an electrical fail-safe mode. This mode makes it possible to operate even if there is an error in a

main electronic control input/output signal circuit. In fail-safe mode the transmission is fixed in 2nd, 4th or 5th

(depending on the breakdown position), so the customer should feel “slipping” or “poor acceleration”.

Even when the electronic circuits are normal, under special conditions (for example, when slamming on the

brake with the wheels spinning drastically and stopping the tire rotation), the transmission can go into fail-safe

mode. If this happens, switch “OFF” the ignition switch for 10 seconds, then switch it “ON” again to return to

the normal shift pattern. Therefore, the customer's vehicle has returned to normal, so handle according to the

“diagnostics flow” (Refer to

TM-6, "Work Flow"

FAIL-SAFE FUNCTION

If any malfunction occurs in a sensor or solenoid, this function controls the A/T to mark driving possible.

Output Speed Sensor

• Signals are input from two systems - from output speed sensor installed on the transmission and from com-

bination meter so normal driving is possible even if there is a malfunction in one of the systems. And if output

speed sensor has unusual cases, 5GR is prohibited.

Accelerator Pedal Position Sensor

• If there is a malfunction in one of the systems, the accelerator opening angle is controlled by ECM according

to a pre-determined accelerator angle to make driving possible. And if there are malfunctions in tow sys-

tems, the engine speed is fixed by ECM to a pre-determined engine speed to make driving possible.

Throttle Position Sensor

• If there is a malfunction in one of the systems, the accelerator opening angle is controlled by ECM according

to a pre-determined accelerator angle to make driving possible. And if there are malfunctions in tow sys-

tems, the accelerator opening angle is controlled by the idle signal sent from the ECM which is based on

input indicating either idle condition or off-idle condition (pre-determined accelerator opening) in order to

make driving possible.

Transmission Range Switch

• In the unlikely event that a malfunction signal enters the TCM, the position indicator is switched “OFF”, the

starter relay is switched “OFF” (starter starting is disabled), the back-up lamp relay switched “OFF” (back-up

lamp is OFF) and the position is fixed to the “D” range to make driving possible.

Starter Relay

• The starter relay is switched “OFF”. (Starter starting is disabled.)

Interlock

• If there is an interlock judgment malfunction, the transmission is fixed in 2GR to make driving possible.

NOTE:

When the vehicle is driven fixed in 2GR, a input speed sensor malfunction is displayed, but this is

not a input speed sensor malfunction.

• When the interlock is detected at the 3GR or more, it is locked at the 2GR.

1st Engine Braking

• When there is an 1st engine brake judgment malfunction, the low coast brake solenoid is switched “OFF” to

avoid the engine brake operation.

Line Pressure Solenoid

• The solenoid is switched “OFF” and the line pressure is set to the maximum hydraulic pressure to make driv-

ing possible.

Torque Converter Clutch Solenoid

• The solenoid is switched “OFF” to release the lock-up.

B/R

Starter relay

Selector lever in “N”,“ P” positions.

Battery voltage

Selector lever in other positions.

Ground

Always

Terminal

No.

Wire

color

Item

Condition

Data (Pyrex.)

Content .. 607 608 609 610 ..