Dodge Durango (HB). Manual - part 193

SWITCH-REMOTE RADIO

DESCRIPTION

Two rocker-type switches are mounted in the sides of the rear (instrument panel side) steering wheel trim cover.
The switch on the left spoke is the seek switch and has seek up, seek down, and preset station advance functions.
The switch on the right spoke is the volume control switch and has volume up, and volume down functions. The
switch on the right spoke also includes a “mode” control that allows the driver to sequentially select AM radio, FM
radio, cassette player or CD player.

OPERATION

The six switches in the two remote radio switch units
are normally open, resistor multiplexed momentary
switches that are hard wired to the Instrument cluster
through the clockspring. The instrument cluster sends
a five volt reference signal to both switch units on one
circuit, and senses the status of all of the switches by
reading the voltage drop on a second circuit.

When the instrument cluster senses an input (voltage
drop) from any one of the remote radio switches, it
sends the proper switch status messages on the Con-
troller Area Network (CAN) data bus to the radio. The
electronic circuitry within the radio is programmed to
respond to these remote radio switch status messages
by adjusting the radio settings as requested.

DIAGNOSIS AND TESTING

REMOTE SWITCHES

Any diagnosis of the Audio system should begin with the use of a scan tool and the appropriate Diagnostic
Service information.

Refer to the appropriate wiring information.

WARNING: DISABLE THE AIRBAG SYSTEM BEFORE ATTEMPTING ANY STEERING WHEEL, STEERING
COLUMN, SEAT BELT TENSIONER, SIDE AIRBAG, OR INSTRUMENT PANEL COMPONENT DIAGNOSIS OR
SERVICE. DISCONNECT AND ISOLATE THE BATTERY NEGATIVE (GROUND) CABLE, THEN WAIT TWO MIN-
UTES FOR THE AIRBAG SYSTEM CAPACITOR TO DISCHARGE BEFORE PERFORMING FURTHER DIAGNO-
SIS OR SERVICE. THIS IS THE ONLY SURE WAY TO DISABLE THE AIRBAG SYSTEM. FAILURE TO TAKE
THE PROPER PRECAUTIONS COULD RESULT IN ACCIDENTAL AIRBAG DEPLOYMENT AND POSSIBLE
PERSONAL INJURY.

AUDIO/VIDEO - SERVICE INFORMATION

8A - 213

1. Remove the remote radio switch(es) (1) and (2)

from the steering wheel (Refer to 8 - ELECTRICAL/
AUDIO/REMOTE SWITCHES - REMOVAL).

2. Use an ohmmeter to check the switch resistances

as shown in the Remote Radio Switch test table. If
the remote radio switch resistances are not as indi-
cated, replace the inoperative switch.

REMOTE RADIO SWITCH TEST

SWITCH

SWITCH POSITION

RESISTANCE

Right or Left

Neutral

24K Ohms ± 5%

Right (White)

Volume Up

6.8K Ohms ± 5%

Right (White)

Volume Down

15.6K Ohms ± 1%

Right (White)

Mode

0 Ohms

Left (Black)

Seek Up

1.2K Ohms ± 5%

Left (Black)

Seek Down

3.3K Ohms ± 5%

Left (Black)

Pre-Set Station Advance

.47K Ohms ± 5%

REMOVAL

8A - 214

AUDIO/VIDEO - SERVICE INFORMATION

1. Disconnect and isolate the battery negative cable.

2. Remove the driver side airbag (5) from the steering

wheel

(1).

(Refer

ELECTRICAL/RE-

STRAINTS/DRIVER AIRBAG - REMOVAL).

3. Remove the speed control switch (3) or (6) located

on the same side of the steering wheel as the
remote radio switch that is being serviced. (Refer
to 8 - ELECTRICAL/SPEED CONTROL/SWITCH -
REMOVAL).

4. Disconnect the steering wheel wire harness con-

nector from the connector receptacle of the remote
radio switch.

5. Disengage the four remote radio switch latches that

secure the switch to the inside of the mounting
hole in the steering wheel rear trim cover.

6. From the outside of the steering wheel rear trim

cover, remove the remote radio switch (2) from the
trim cover.

INSTALLATION

1. Position the remote radio switch to the mounting

hole on the outside of the steering wheel rear trim
cover. Be certain that the connector receptacle is
oriented toward the bottom of the switch and
pointed toward the center of the steering wheel.

2. Press firmly and evenly on the remote radio switch

until each of the switch latches is fully engaged in
the mounting hole of the steering wheel rear trim
cover.

3. Reconnect the steering wheel wire harness con-

nector to the connector receptacle of the remote
radio switch.

4. Install the speed control switch onto the steering

wheel. (Refer to 8 - ELECTRICAL/SPEED CON-
TROL/SWITCH - INSTALLATION).

5. Install the driver side airbag to the steering wheel.

(Refer to 8 - ELECTRICAL/RESTRAINTS/DRIVER
AIRBAG - INSTALLATION).

6. Reconnect the battery negative cable.

AUDIO/VIDEO - SERVICE INFORMATION

8A - 215

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