2006 DODGE RAM SRT-10 Service Repair Manual

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Page 3281 of 5267

DODGE RAM SRT-10 2006 Service Repair Manual NOTE: The readings should be within ±14 kPa or 2.0 psi on the scan tool to the pressure readings specified
on Transmission Simulator.
Does the Line Pressure on the scan tool match the line pressures

Page 3282 of 5267

DODGE RAM SRT-10 2006 Service Repair Manual 4.CHECK THE (F856) 5-VOLT SUPPLY CIRCUIT FOR AN OPEN
Disconnect the PCM C1 harness connector and connect Miller tool
#8815.
Measure the resistance of the (F856) 5-volt Supply circuit between the
Line

Page 3283 of 5267

DODGE RAM SRT-10 2006 Service Repair Manual 6.INTERMITTENT WIRING AND CONNECTORS
The conditions necessary to set this DTC are not present at this time.
Using the schematics as a guide, inspect the wiring and connectors specifictothiscircuit.
Wi

Page 3284 of 5267

DODGE RAM SRT-10 2006 Service Repair Manual P0935-LINE PRESSURE SENSOR CIRCUIT HIGH
For a complete wiring diagramRefer to Section 8W

Page 3285 of 5267

DODGE RAM SRT-10 2006 Service Repair Manual When Monitored:
Continuously with ignition on and engine running.
Set Condition:
This DTC will set if the monitored Line Pressure Sensor voltage is greater than or equal to 4.75 volts for the
period o

When Monitored:
Continuously with ignition on and engine running.
Set Condition:
This DTC will set if the monitored Line Pressure Sensor voltage is greater than or equal to 4.75 volts for the
period of 0.18 seconds
Possible Causes
(T38) LINE PRESSURE SENSOR SIGNAL CIRCUIT OPEN
(K900) SENSOR GROUND CIRCUIT OPEN
(T38) LINE PRESSURE SENSOR SIGNAL CIRCUIT SHORT TO VOLTAGE
LINE PRESSURE SENSOR
POWERTRAIN CONTROL MODULE
Always perform the 45RFE/545RFE Pre-Diagnostic Troubleshooting Procedure before proceeding. (Refer to
21 - TRANSMISSION/TRANSAXLE/AUTOMATIC - 45RFE/545RFE - STANDARD PROCEDURE)
Theory of Operation
Line pressure is electronically controlled by the Transmission Control System and is measured by the Line Pressure
Sensor (LPS). The desired line pressure is continuously being compared tothe actual line pressure and is regulated
by electronically changing the dutycycle of the Pressure Control Solenoid (PCS). (5% duty cycle = solenoid off =
max line pressure, 62% duty cycle =solenoid on = min line pressure).
The Transmission Control System calculates the desired line pressure based on inputs from the transmission and
engine. A calculated torque input to the transmission is used as the primary input of the desired line pressure cal-
culation and is called Torque Based Line Pressure. In addition, the line pressure is set to a preset level 827 to 931
kPa (120 to 135 psi) during shifts and in Park and Neutral to ensure consistent shift quality.
The monitored Line Pressure Sensor voltage should always be between 0.35 and 4.75 volts. Any monitored volt-
ages outside these parameters indicate an Line Pressure Sensor or wiring problem and will cause either DTC
P0934 or P0935 to set.
Diagnostic Test
1.CHECK TO SEE IF DTC IS CURRENT
With the scan tool, Check the STARTS SINCE SET counter for P0935.
NOTE: This counter only applies to the last DTC set.
Is the STARTS SINCE SET counter 2 or less?
Ye s>>
Go To 2
No>>
Go To 6
2.CHECK THE PCM AND WIRING
Turn the ignition off to the lock position.
Remove the Ignition Switch Feed fuse from the TIPM.
CAUTION: Removal of the Ignition Switch Feed fuse from the TIPM will prevent the vehicle from being
startedingear.
WARNING: The Ignition Switch Feed fuse must be removed from the TIPM. Failure to do so can result in
personal injury or death.
Install the Transmission Simulator, Miller tool #8333.
Ignition on, engine not running.
With the scan tool, monitor the Line Pressure.
Using the Transmission Simulator, set the rotary switch to each of the 3 line pressure positions.

Page 3286 of 5267

DODGE RAM SRT-10 2006 Service Repair Manual NOTE: The readings should be within ±14 kPa or 2.0 psi on the scan tool of the pressure reading specified
on Transmission Simulator.
Does the 3 line pressures on the scan tool match the Line pressure

Page 3287 of 5267

DODGE RAM SRT-10 2006 Service Repair Manual 4.CHECK THE (T38) LINE PRESSURE SENSOR SIGNAL CIRCUIT FOR AN OPEN
Disconnect the PCM C4 harness connector and connect Miller tool
#8815.
Measure the resistance of the (T38) Line Pressure Sensor Signal

Page 3288 of 5267

DODGE RAM SRT-10 2006 Service Repair Manual 6.CHECK WIRING AND CONNECTORS
The conditions necessary to set this DTC are not present at this time.
Using the schematics as a guide, inspect the wiring and connectors specifictothiscircuit.
Wiggle th

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