2006 DODGE RAM SRT-10 Service Repair Manual

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Page 3961 of 5267

DODGE RAM SRT-10 2006 Service Repair Manual SWITCH-TOW/HAUL OVERDRIVE
DESCRIPTION
The tow/haul overdrive OFF (control) switch is located
in the shift lever arm. The switch is a momentary con-
tact device that signals the PCM to toggle current s

Page 3962 of 5267

DODGE RAM SRT-10 2006 Service Repair Manual 2. Pull the switch (2) outwards to release it from the
connector in the lever (1)
INSTALLATION
NOTE: There is enough slack in the wire to pull out the connector from the lever.
1. Pull the connector (

Page 3963 of 5267

DODGE RAM SRT-10 2006 Service Repair Manual SENSOR-TRANSMISSION RANGE
DESCRIPTION
The Transmission Range Sensor (TRS) has 3 primary
functions:
Provide a PARK/NEUTRAL start signal to the
engine controller and the starter relay.
Turn the Back-up

Page 3964 of 5267

DODGE RAM SRT-10 2006 Service Repair Manual is also sent by the cluster. In REVERSE range a second contact set closes thecircuit providing power to the
reverse lamps.
Indicated Gear Position Transmission
StatusColumn Shifter
Position
Mechanical

is also sent by the cluster. In REVERSE range a second contact set closes thecircuit providing power to the
reverse lamps.
Indicated Gear Position Transmission
StatusColumn Shifter
Position
Mechanical State Electronic Display
(Ignition Unlocked)Electronic Display
(Ignition On)
P P P Vehicle is in PARK
with the pawl
engaged.In the PARK gate.
R The PARK pawl is
disengaged and the
vehicle is free to
roll, but REVERSE
is not engaged.Between the PARK
and REVERSE
gates.
R R R The transmission is
hydraulically in
REVERSE.In the REVERSE
gate.
N The transmission is
transitioning
between REVERSE
and NEUTRAL.Between the
REVERSE and
NEUTRAL gates.
N N N The vehicle is in
NEUTRAL.In the NEUTRAL
gate.
N The transmission is
transitioning
between NEUTRAL
and DRIVE, but is
not in DRIVE.Between the
NEUTRAL and
DRIVE gates.
D D D The transmission is
hydraulically in
DRIVE.In the DRIVE gate,
2 2 2 The transmission is
hydraulically in
Manual SECOND.In the SECOND
gate.
1 1 1 The transmission is
hydraulically in
Manual FIRST.In the FIRST gate.
DIAGNOSIS AND TESTING - TRANSMISSION RANGE SENSOR (TRS)
NOTE: For all circuit identification in the following steps, Refer to the appropriate Wiring Information.
1. Raise vehicle on suitable hoist.
2. Disconnect the vehicle’s shift cable from the manual lever.
3. With the manual lever in the PARK position (the PARK position is with the manual lever moved to the full rear-
ward position), measure the resistance between the Park/Neutral PositionSensepinoftheTRSandthetrans-
mission case. The resistance should be less than 5 ohms.
4. With the manual lever in the NEUTRAL position (the NEUTRAL position is with the manual lever moved two
detents forward of the full rearward position), measure the resistance between the Park/Neutral Position Sense
pin of the TRS and the transmission case. The resistance should be less than5ohms.
5. If the resistance is greater than 5 ohms in either of the previous steps, check for a dirty contact between the tip
of the TRS rod and the valve body manual lever. If the contact is OK, replace the TRS.
6. With the manual lever in the REVERSE position (the REVERSE position is with the manual lever moved one
detent forward of the full rearward position), measure the resistance between the Fused Ignition Switch Output

Page 3965 of 5267

DODGE RAM SRT-10 2006 Service Repair Manual and the Back-up Lamp feed pins of the TRS. The resistance should be less than5 ohms. If the resistance is
greater than 5 ohms, replace the TRS.
7. With the manual lever in the PARK position (the PARK

and the Back-up Lamp feed pins of the TRS. The resistance should be less than5 ohms. If the resistance is
greater than 5 ohms, replace the TRS.
7. With the manual lever in the PARK position (the PARK position is with the manual lever moved to the full rear-
ward position), measure the resistance between the Transmission Range Sensor MUX and the Transmission
Range Sensor 5V Supply pins of the TRS. The resistance should be 522.2 ohms.If the resistance is not correct,
replace the TRS.
8. With the manual lever in the REVERSE position (the REVERSE position is with the manual lever moved one
detent forward of the full rearward position), measure the resistance between the Transmission Range Sensor
MUX and the Transmission Range Sensor 5V Supply pins of the TRS. The resistance should be 206.2 ohms. If
the resistance is not correct, replace the TRS.
9. With the manual lever in the NEUTRAL position (the NEUTRAL position is with the manual lever moved two
detents forward of the full rearward position), measure the resistance between the Transmission Range Sensor
MUX and the Transmission Range Sensor 5V Supply pins of the TRS. The resistance should be 108.6 ohms. If
the resistance is not correct, replace the TRS.
10. With the manual lever in the DRIVE position (the DRIVE position is with the manual lever moved three detents
forward of the full rearward position), measure the resistance between the Transmission Range Sensor MUX
and the Transmission Range Sensor 5V Supply pins of the TRS. The resistanceshould be 59.9 ohms. If the
resistance is not correct, replace the TRS.
11. With the manual lever in the SECOND position (the SECOND position is with the manual lever moved one
detent rearward of the full forward position), measure the resistance between the Transmission Range Sensor
MUX and the Back-up Lamp feed pins of the TRS. The resistance should be 31.9 ohms. If the resistance is not
correct, replace the TRS.
12. With the manual lever in the LOW position (the LOW position is with the manual lever moved to the full forward
position), measure the resistance between the Transmission Range SensorMUX and the Back-up Lamp feed
pins of the TRS. The resistance should be 13.7 ohms. If the resistance is notcorrect, replace the TRS.
REMOVAL
1. Raise vehicle and position drain pan under the
transmission range sensor (TRS).
2. Move the transmission manual lever to the manual
LOW position. The manual LOW position is with
the manual lever in the forward-most detent.
3. Disengage the wiring connector from the TRS.
4. Remove the two screws holding the TRS to the
TRS mounting bracket.
5. Remove the TRS (3) from the TRS mounting
bracket by pulling it straight out of the bracket.

Page 3966 of 5267

DODGE RAM SRT-10 2006 Service Repair Manual 6. If necessary, loosen the TRS mounting bracket (2)
in the transmission case using Adapter 8581 (3).
7. If necessary, remove the TRS mounting bracket (2)
from the transmission case.
INSTALLATION
1. M

Page 3967 of 5267

DODGE RAM SRT-10 2006 Service Repair Manual 3. Install the TRS (3) into the mounting bracket (2)
with the wiring connector facing the front of the
transmission.
4. Install the two screws to hold the TRS to the
mounting bracket. Tighten the scre

Page 3968 of 5267

DODGE RAM SRT-10 2006 Service Repair Manual SENSOR-TRANSMISSION TEMPERATURE
DESCRIPTION
Transmission fluid temperature readings are supplied
to the transmission control module by the thermistor.
The temperature readings are used to control enga

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