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Dodge Durango (HB). Manual - part 1348

C230B- NEUTRAL INDICATOR CONTROL CIRCUIT HIGH (CONTINUED)

(G95) 4WD NEUTRAL INDICATOR CIRCUIT SHORTED TO VOLTAGE

Turn the ignition off.

Disconnect the Instrument Cluster Module (CCN) C3 connector.

Turn the ignition on.

Measure the voltage of the (G95) 4WD Neutral Indicator circuit.

Is there any voltage present?

Yes

>> Go to 3

>> Go to 4

TRANSFER CASE SELECTOR SWITCH

Disconnect the Transfer Case Selector Switch connector.

Measure the voltage of the (G95) 4WD Neutral Indicator circuit.

Is there any voltage present?

Yes

>> Repair the (G95) 4WD Neutral Indicator circuit for a short

to voltage.

Perform the TRANSFER CASE VERIFICATION TEST-
VER 1. (Refer to 8 - ELECTRICAL/ELECTRONIC CON-
TROL MODULES/TRANSFER CASE CONTROL MODULE
- DIAGNOSIS AND TESTING)

>> Replace the Transfer Case Selector Switch.

Perform the TRANSFER CASE VERIFICATION TEST-
VER 1. (Refer to 8 - ELECTRICAL/ELECTRONIC CON-
TROL MODULES/TRANSFER CASE CONTROL MODULE
- DIAGNOSIS AND TESTING)

TRANSFER CASE - ELECTRICAL DIAGNOSTICS

21 - 797

C230B- NEUTRAL INDICATOR CONTROL CIRCUIT HIGH (CONTINUED)

(G95) 4WD NEUTRAL INDICATOR CIRCUIT OPEN

Disconnect the Transfer Case Selector Switch connector.

Measure the resistance of the (G95) 4WD Neutral Indicator Control cir-
cuit.

Is the resistance above 5.0 ohms?

Yes

>> Repair the open (G95) 4WD Neutral Indicator circuit.

Perform the TRANSFER CASE VERIFICATION TEST-
VER 1. (Refer to 8 - ELECTRICAL/ELECTRONIC CON-
TROL MODULES/TRANSFER CASE CONTROL MODULE
- DIAGNOSIS AND TESTING)

>> Go to 5

INSTRUMENT CLUSTER MODULE

View repair.

Repair

Replace the Instrument Cluster Module in accordance with the Service information.

Perform the TRANSFER CASE VERIFICATION TEST-VER 1. (Refer to 8 - ELECTRICAL/ELECTRONIC
CONTROL MODULES/TRANSFER CASE CONTROL MODULE - DIAGNOSIS AND TESTING)

INTERMITTENT WIRING AND CONNECTORS

The conditions necessary to set this DTC are not present at this time.

Using the wiring diagram/schematic as a guide, inspect the wiring and connectors.

While monitoring the scan tool data relative to this circuit, wiggle test the wiring and connectors.

Look for the data to change or for the DTC to reset during the wiggle test.

Were any problems found?

Yes

>> Repair as necessary.

Perform the TRANSFER CASE VERIFICATION TEST-VER 1. (Refer to 8 - ELECTRICAL/ELECTRONIC
CONTROL MODULES/TRANSFER CASE CONTROL MODULE - DIAGNOSIS AND TESTING)

>> Test complete.

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TRANSFER CASE - ELECTRICAL DIAGNOSTICS

TRANSFER CASE - NV144 - SERVICE INFORMATION

TABLE OF CONTENTS

page

TRANSFER CASE - NV144 - SERVICE

INFORMATION
DESCRIPTION

. . . . . . . . . . . . . . . . . . . . . . . . 799

OPERATION

. . . . . . . . . . . . . . . . . . . . . . . . . . 800

DIAGNOSIS AND TESTING

TRANSFER CASE - NV144

. . . . . . . . . . . . . 800

REMOVAL

. . . . . . . . . . . . . . . . . . . . . . . . . . . . 801

DISASSEMBLY

. . . . . . . . . . . . . . . . . . . . . . . . 801

CLEANING

. . . . . . . . . . . . . . . . . . . . . . . . . . . 810

INSPECTION

. . . . . . . . . . . . . . . . . . . . . . . . . . 810

ASSEMBLY

. . . . . . . . . . . . . . . . . . . . . . . . . . . 811

INSTALLATION

. . . . . . . . . . . . . . . . . . . . . . . . 822

SPECIFICATIONS

TRANSFER CASE - NV144

. . . . . . . . . . . . . 823

SPECIAL TOOLS

TRANSFER CASE - NV144

. . . . . . . . . . . . . 824

FLUID

STANDARD PROCEDURE - FLUID DRAIN AND

REFILL

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 825

SEAL-FRONT OUTPUT SHAFT

REMOVAL

. . . . . . . . . . . . . . . . . . . . . . . . . . . . 825

INSTALLATION

. . . . . . . . . . . . . . . . . . . . . . . . 827

SENSOR-MODE

DESCRIPTION

. . . . . . . . . . . . . . . . . . . . . . . . 829

OPERATION

. . . . . . . . . . . . . . . . . . . . . . . . . . 829

SEAL-REAR CASE EXTENSION

REMOVAL

. . . . . . . . . . . . . . . . . . . . . . . . . . . . 830

INSTALLATION

. . . . . . . . . . . . . . . . . . . . . . . . 830

SWITCH-TRANSFER CASE SELECTOR

DESCRIPTION

. . . . . . . . . . . . . . . . . . . . . . . . 830

OPERATION

. . . . . . . . . . . . . . . . . . . . . . . . . . 830

ASSEMBLY-SHIFT MOTOR/MODE SENSOR

DESCRIPTION

. . . . . . . . . . . . . . . . . . . . . . . . 831

OPERATION

. . . . . . . . . . . . . . . . . . . . . . . . . . 831

REMOVAL

. . . . . . . . . . . . . . . . . . . . . . . . . . . . 831

INSTALLATION

. . . . . . . . . . . . . . . . . . . . . . . . 832

TRANSFER CASE - NV144 - SERVICE INFORMATION

DESCRIPTION

The NV144 is an electronically controlled, single-speed, AWD transfer case.

The geartrain is mounted in two aluminum case halves attached with bolts.

OPERATING RANGES

Transfer case operating ranges are:

•

AWD (All-wheel drive)

•

4HI (4-wheel drive)

The AWD range is for use on any road surface at any time.

The 4HI range is for off road use only. It is not for use on hard surface roads. The only exception being when the
road surface is wet or slippery or covered by ice and snow.

SHIFT MECHANISM

Operating ranges are selected with a dash mounted shift selector switch. The shift selector switch provides a input
to the Front Control Module (FCM) to indicate the driver’s desire to change operating ranges. The FCM uses this
input, along with input from the transfer case mounted mode sensor and information from the vehicle’s bus, to deter-
mine if a shift is permitted. If the FCM decides the shift is permitted, the FCM controls the shift motor, mounted to
the exterior of the transfer case, to perform the shift.

TRANSFER CASE - NV144 - SERVICE INFORMATION

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IDENTIFICATION

A circular ID tag is attached to the rear case of each
transfer case. The ID tag provides the transfer case
model number, assembly number, and serial number.

The transfer case serial number also represents the
date of build.

OPERATION

The input gear is splined to the transmission output shaft. The input gear drives the mainshaft through the differ-
ential assembly. The front output shaft is operated by a drive chain that connects the shaft to a drive sprocket on
the mainshaft.

DIAGNOSIS AND TESTING

TRANSFER CASE - NV144

DIAGNOSIS CHART

Condition

Possible Cause

Correction

Transfer case difficult to shift or will
not shift into desired mode.

1) Transfer case electronically
controlled shift system malfunction.

1) Verify proper operation per the
appropriate diagnostic manual.

2) If vehicle was operated for an
extended period in 4HI mode on dry
surface, driveline torque load may
cause difficulty.

2) Drive the vehicle in a straight line
and momentarily release the
accelerator. The transfer case can
then be shifted to the desired mode.

3) Insufficient or incorrect lubricant.

3) Drain and refill transfer case with
the correct quantity of Mopar

ATF

+4, Automatic Transmission Fluid.

4) Internal transfer case
components binding, worn, or
damaged.

4) Repair or replace components as
necessary.

Transfer case noisy in all drive
modes.

1) Insufficient or incorrect lubricant.

1) Drain and refill transfer case with
the correct quantity of Mopar

ATF

+4, Automatic Transmission Fluid.

2) Internal transfer case
components binding, worn, or
damaged.

2) Repair or replace components as
necessary.

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TRANSFER CASE - NV144 - SERVICE INFORMATION

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