2006 DODGE RAM SRT-10 Service Repair Manual

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Page 1417 of 5267

DODGE RAM SRT-10 2006 Service Repair Manual 3.EVAP PURGE SOLENOID VACUUM LINE
Turn the ignition off.
Inspect the Purge Solenoid Vacuum line that runs from the Evap Purge Solenoid to the throttle body or intake man-
ifold.
Is the vacuum line plu

3.EVAP PURGE SOLENOID VACUUM LINE
Turn the ignition off.
Inspect the Purge Solenoid Vacuum line that runs from the Evap Purge Solenoid to the throttle body or intake man-
ifold.
Is the vacuum line plugged or kinked?
Ye s>>
Repair or replace the vacuum line from the solenoid to the throttle body / intake manifold.
Perform POWERTRAIN VERIFICATION TEST. (Refer to 9 - ENGINE - STANDARD PROCEDURE)
No>>
Go To 4
NOTE: Reconnect the vacuum line before continuing.
4.CHECKED FOR OTHER BLOCKED HOSES
To continue testing you will need Miller Tool #6872A (Evap System PressurePump) and #8382 (Gas Cap Tester [
]Adapter).
WARNING: The test equipment is designed to be used to pressurize the vehicles Evaporative System only.
Using the equipment in a manner for which it was not designed could be harmful.
WARNING: Keep lit cigarettes, sparks, flames, and other ignition sourcesaway from the test area to prevent
the ignition of explosive gases. Keep the test area well ventilated.
NOTE: The fuel tank should have between 20% and 80% of full to properly test the Evap System.
Attach the power source clip (red) of Miller Tool #6872A to Battery (+) and the ground clip (black) to Battery (-).
Perform the Evaporative System Pressure Pump self test that is specified on the tester cover.
Remove gas cap and install Miller Tool #8382 on the vehicle. Install gas capto Miller Tool #8382. Attach the pres-
sure supply hose from Miller Tool #6872A to the fitting on #8382.
Disconnect the vacuum supply hose at the Leak Detection Pump.
Connect and apply a continuous vacuum supply (i.e. 20”Hg) to the Leak Detection Pump. A vacuum pump such as
an A/C Recovery unit works well.
Ignition on, engine not running.
With the scan tool perform the “Leak Detect Pump Test”. Follow the scan toolinstructions and then press ENTER.
Select#3–HOLDPSI.
On Miller Tool #6872A, set the Pressure/Hold switch to Open and set the Ventswitch to Closed. Turn the pump
timer On and watch the gauge.
When the gauge pressure reaches 14”H2O, turn the Pressure/Hold Valve to Closed.
Turn the pump timer off.
Disconnect the hose at the Evap Canister that goes to the Fuel Tank.
Did the pressure drop when the hose was disconnected?
Ye s>>
Go To 5
No>>
Repair the obstruction in the Evap System between the Evap Canister and thefuel tank.
Perform POWERTRAIN VERIFICATION TEST. (Refer to 9 - ENGINE - STANDARD PROCEDURE)
5.EVAP CANISTER FUNCTION
NOTE: Connect all previously disconnected hoses.
Re-pressurize the Evap System. On Miller Tool #6872A, set the Pressure/Hold switch to Open and set the Vent
switch to Closed.
Turn the pump timer On and watch the gauge.
When the gauge pressure reaches 14” H2O, turn the Pressure/Hold Valve Closed.
Turn the pump timer off.

Page 1418 of 5267

DODGE RAM SRT-10 2006 Service Repair Manual Disconnect the LDP Pressure hose at the Evap Canister. The LDP Pressure hose is the hose that connects the
Evap Canister to the Leak Detection Pump.
Did pressure drop when the hose was disconnected?
Y

Disconnect the LDP Pressure hose at the Evap Canister. The LDP Pressure hose is the hose that connects the
Evap Canister to the Leak Detection Pump.
Did pressure drop when the hose was disconnected?
Ye s>>
Go To 6
No>>
Replace the Evap Canister.
Perform POWERTRAIN VERIFICATION TEST. (Refer to 9 - ENGINE - STANDARD PROCEDURE)
6.EVAP CANISTER FUNCTION
NOTE: Connect all previously disconnected hoses.
Re-pressurize the Evap System. On Miller Tool #6872A, set the Pressure/Hold switch to Open and set the Vent
switch to Closed.
Turn the pump timer On and watch the gauge.
When the gauge pressure reaches 14” H2O, turn the Pressure/Hold Valve Closed.
Turn the pump timer off.
Disconnect the Evap hoses at the Evap Purge Solenoid.
Did pressure drop when the hose was disconnected?
Ye s>>
Go To 7
No>>
Repair or replace the hose / tube assembly as necessary.
Perform POWERTRAIN VERIFICATION TEST. (Refer to 9 - ENGINE - STANDARD PROCEDURE)
7.LEAK DETECTION PUMP HOSE
Disconnect and remove the LDP pressure hose. The LDP pressure hose is the hose that connects the Evap Can-
ister to the Leak Detection Pump.
Inspect the LDP pressure hose for anyobstructions or physical damage.
Is the LDP pressure hose free of defects?
Ye s>>
Replace the Leak Detection Pump.
Perform POWERTRAIN VERIFICATION TEST. (Refer to 9 - ENGINE - STANDARD PROCEDURE)
No>>
Repair or replace the hose / tube assembly as necessary.
Perform POWERTRAIN VERIFICATION TEST. (Refer to 9 - ENGINE - STANDARD PROCEDURE)
8.LDP MONITOR TEST
At this time, the conditions required to set the DTC are not present.
NOTE: Use the Freeze Frame data to help you duplicate the conditions that set the DTC. Pay particular
attention to the DTC setconditions, such as, VSS, MAP, ECT, and Load.
NOTE: A thorough visual inspection of the Evap system hoses, tubes, and connections may save time in
you diagnosis. Look for any physical damage or signs of wetness at connections. The strong smell of fuel
vapors may aid diagnosis also.
NOTE: Refer to any Service Bulletins that may apply
With the scan tool, perform the LDP Monitor Test. This will force the PCM to run the LDP Monitor. If the monitor
fails, further diagnosis is required to find a faulty component. If the monitor passes, the condition is not present at
this time.
Did the monitor test fail?
Ye s>>
Check the one trip faults to determine the DTC that was set during the LDP monitor test. Continue
diagnosis as necessary.
No>>
Te s t C o m p l e t e .

Page 1419 of 5267

DODGE RAM SRT-10 2006 Service Repair Manual P1492-AMBIENT/BATTERY TEMPERATURE SENSOR VOLTAGE TOO HIGH
For a complete wiring diagramRefer to Section 8W.

Page 1420 of 5267

DODGE RAM SRT-10 2006 Service Repair Manual When Monitored:
With the ignition key on.
Set Condition:
The PCM senses the voltage from the Battery Temperature Sensor above 4.9 volts for 3 seconds.
Possible Causes
BATTERY TEMP SENSOR VOLTAGE ABOVE

Page 1421 of 5267

DODGE RAM SRT-10 2006 Service Repair Manual 3.(K25) BATT TEMP SIGNAL CIRCUIT SHORTED TO VOLTAGE
Turn the ignition off.
Disconnect the PCM harness connectors.
Ignition on, engine not running.
Measure the voltage on the (K25) Battery Temp Signal

Page 1422 of 5267

DODGE RAM SRT-10 2006 Service Repair Manual 5.(K900) SENSOR GROUND CIRCUIT OPEN
Measure the resistance in the (K900) Sensor ground circuit from the
PCM harness connector to the Sensor connector.
Is the resistance below 5.0 ohms?
Ye s>>
Go To 6

Page 1423 of 5267

DODGE RAM SRT-10 2006 Service Repair Manual P1493-AMBIENT/BATTERY TEMPERATURE SENSOR VOLTAGE TOO LOW
For a complete wiring diagramRefer to Section 8W.

Page 1424 of 5267

DODGE RAM SRT-10 2006 Service Repair Manual When Monitored:
With the ignition on.
Set Condition:
The PCM senses the voltage from the Battery Temperature Sensor below 0.5 ofa volt for 3 seconds.
Possible Causes
BATTERY TEMP SENSOR VOLTAGE BELOW

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