2006 DODGE RAM SRT-10 Service Repair Manual

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Page 1409 of 5267

DODGE RAM SRT-10 2006 Service Repair Manual P1391-INTERMITTENT LOSS OF CMP OR CKP
For a complete wiring diagramRefer to Section 8W.

Page 1410 of 5267

DODGE RAM SRT-10 2006 Service Repair Manual When Monitored:
Engine running or cranking.
Set Condition:
When the failure counter reaches 20 for 2 consecutive trips.
Possible Causes
GOOD TRIP EQUAL TO ZERO
CMP WIRE HARNESS INSPECTION
TONE WHEEL/P

Page 1411 of 5267

DODGE RAM SRT-10 2006 Service Repair Manual 3.CMP WIRE HARNESS INSPECTION
Visually inspect the related wire harness. Look for any chafed, pierced, pinched, or partially broken wires.
Visually inspect the related wire harness connectors. Look fo

Page 1412 of 5267

DODGE RAM SRT-10 2006 Service Repair Manual 7.CKP WIRE HARNESS INSPECTION
Visually inspect the related wire harness. Look for any chafed, pierced, pinched, or partially broken wires.
Visually inspect the related wire harness connectors. Look fo

7.CKP WIRE HARNESS INSPECTION
Visually inspect the related wire harness. Look for any chafed, pierced, pinched, or partially broken wires.
Visually inspect the related wire harness connectors. Look for broken, bent, pushed out, or corroded terminals.
Ensure the Crankshaft Position Sensor and the Camshaft Position Sensor are properly installed and the mounting
bolt(s) are torqued to specification.
Refer to any TSB that may apply.
Were any of the above conditions present?
Ye s>>
Repair as necessary
Perform POWERTRAIN VERIFICATION TEST. (Refer to 9 - ENGINE - STANDARD PROCEDURE)
No>>
Go To 8
8.TONE WHEEL/FLEX PLATE INSPECTION
Remove the Crankshaft Position Sensor.
Inspect the Tone Wheel/Flex Plate slots for damage, foreign material, or excessive movement.
Were any problems found?
Ye s>>
Repair or replace the Tone Wheel/Flex Plate as necessary.
Perform POWERTRAIN VERIFICATION TEST. (Refer to 9 - ENGINE - STANDARD PROCEDURE)
No>>
Go To 9
9.CRANKSHAFT POSITION SENSOR
If there are no possible causes remaining, view repair.
Repair
Replace the Crankshaft Position Sensor.
Perform POWERTRAIN VERIFICATION TEST. (Refer to 9 - ENGINE - STANDARD PROCEDURE)
10.CHECKING CKP SIGNAL WITH LAB SCOPE
NOTE: The conditions that set this DTC are not present at this time. The following test may help in identi-
fying the intermittent condition.
Turn the ignition off.
With the scan tool as a Dual Channel Lab Scope and the Miller special tool #6801, backprobe the (K24) CKP Signal
circuit in the PCM harness connector and CKP harness connector.
WARNING: When the engine is operating, do not stand in a direct line with thefan. Do not put your hand
near the pulleys, belts, or fan. Do not wear loose clothing.
Start the engine.
Carefully wiggle the related wire harness and gently tap on the CKP sensor.
Compare the Channel 1 reading to the Channel 2 reading on the lab scope screen.
Both of the readings should be the same.
Were any of the above conditions present?
Ye s>>
Repair the wiring or connector concern.
Perform POWERTRAIN VERIFICATION TEST. (Refer to 9 - ENGINE - STANDARD PROCEDURE)
No>>
Te s t C o m p l e t e .

Page 1413 of 5267

DODGE RAM SRT-10 2006 Service Repair Manual P1398-MIS-FIRE ADAPTIVE NUMERATOR AT LIMIT
For a complete wiring diagramRefer to Section 8W.
When Monitored:
Under closed throttle decel and Fuel Pulse Width equal to zero for 30 seconds.
Set Conditio

P1398-MIS-FIRE ADAPTIVE NUMERATOR AT LIMIT
For a complete wiring diagramRefer to Section 8W.
When Monitored:
Under closed throttle decel and Fuel Pulse Width equal to zero for 30 seconds.
Set Condition:
One of the CKP sensor target windows has more than 2.86% variance from the reference window.
Possible Causes
ADAPTIVE NUMERATOR RELEARN
CMP SENSOR CONNECTOR/WIRING
CKP SENSOR CONNECTOR/WIRING
DAMAGED TONE WHEEL/FLEX PLATE (CRANKSHAFT)
CRANKSHAFT POSITION SENSOR
PCM
Always perform the Pre-Diagnostic Troubleshooting procedure before proceeding. (Refer to 9 - ENGINE -
DIAGNOSIS AND TESTING)
1.ADAPTIVE NUMERATOR RELEARN
NOTE: Check for any TSB’s that may apply to this symptom.
Read and record the Freeze Frame Data. Use this information to help you duplicate the conditions that set the DTC.
Pay particular attention to the DTC set conditions, such as, VSS, MAP, ECT,and Load.
Ignition on, engine not running.
With the scan tool in the miscellaneous menu, choose Clear PCM (battery disconnect) to reset the PCM.
With the scan tool, choose the Misfire Pretest screen.
Road test the vehicle and re-learn the adaptive numerator.
The adaptive numerator is learned when the Adaptive Numerator Done Learning line on the Misfire screen changes
to Yes.
Did the adaptive numerator re-learn?
Ye s>>
Refer to the INTERMITTENT CONDITIONSymptom (Diagnostic Procedure).
Perform POWERTRAIN VERIFICATION TEST. (Refer to 9 - ENGINE - STANDARD PROCEDURE)
No>>
Go To 2
2.CMP CONNECTOR/HARNESS INSPECTION
Turn ignition off.
NOTE: Visually inspect the related wire harness connectors. Look for broken, bent, pushed out, or corroded
terminals.
NOTE: Visually inspect the related wire harness. Look for any chafed, pierced, pinched, or partially broken
wires.
NOTE: Make sure the Camshaft Position Sensor is tight.
NOTE: Refer to any technical service bulletins that may apply.
Were any problems found?
Ye s>>
Repair as necessary.
Perform POWERTRAIN VERIFICATION TEST. (Refer to 9 - ENGINE - STANDARD PROCEDURE)
No>>
Go To 3

Page 1414 of 5267

DODGE RAM SRT-10 2006 Service Repair Manual 3.CKP CONNECTOR/HARNESS INSPECTION
NOTE: Visually inspect the Crankshaft Position Sensor and related wire harness connectors. Look for bro-
ken, bent, pushed out, or corroded terminals.
NOTE: Visually

3.CKP CONNECTOR/HARNESS INSPECTION
NOTE: Visually inspect the Crankshaft Position Sensor and related wire harness connectors. Look for bro-
ken, bent, pushed out, or corroded terminals.
NOTE: Visually inspect the related wire harness. Look for any chafed, pierced, pinched, or partially broken
wires.
NOTE:VerifytheCrankPositionSensorisproperlyinstalled.
Were any problems found?
Ye s>>
Repair as necessary.
Perform POWERTRAIN VERIFICATION TEST. (Refer to 9 - ENGINE - STANDARD PROCEDURE)
No>>
Go To 4
4.TONE WHEEL/FLEX PLATE INSPECTION
Disconnect and remove the Crankshaft Position Sensor.
Inspect the tone wheel/flexplate slots for damage, foreign material, or excessive movement.
Is the tone wheel/flexplate free from defects?
Ye s>>
Go To 5
No>>
Repair/replace tone wheel/flex plate as necessary.
Perform POWERTRAIN VERIFICATION TEST. (Refer to 9 - ENGINE - STANDARD PROCEDURE)
5.CRANKSHAFT POSITION SENSOR l
With the scan tool lab scope probe and the Miller special tool #6801, back probe the (K24) CKP Signal circuit in the
PCM harness connector.
WARNING: WARNING: WHEN THE ENGINE IS OPERATING, DO NOT STAND IN A DIRECT LINEWITHTHE
FAN. DO NOT PUT YOUR HANDS NEAR THE PULLEYS, BELTS OR FAN. DO NOT WEAR LOOSE CLOTHING..
Start the engine and observe the lab scope screen for any erratic CKP Sensorpulses.
NOTE: Turn the ignition off before continuing.
Were any erratic Crank Position signals detected.
Ye s .>>
Replace the Crankshaft Position Sensor.
Perform POWERTRAIN VERIFICATION TEST. (Refer to 9 - ENGINE - STANDARD PROCEDURE)
No.>>
Go To 6
6.PCM
NOTE: Before continuing, check the PCM harness connector terminals for corrosion, damage, or terminal
push out. Repair as necessary.
Using the schematics as a guide, inspect the wire harness and connectors. Pay particular attention to all Power and
Ground circuits.
If there are no possible causes remaining, view repair.
Repair
Replace and program the Powertrain Control Module per Service Information.
Perform POWERTRAIN VERIFICATION TEST. (Refer to 9 - ENGINE - STANDARD PROCEDURE)

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DODGE RAM SRT-10 2006 Service Repair Manual P1486-EVAP LEAK MONITOR PINCHED HOSE FOUND
For a complete wiring diagramRefer to Section 8W.

Page 1416 of 5267

DODGE RAM SRT-10 2006 Service Repair Manual When Monitored:
Immediately after a cold start, with battery/ambient temperature between 40 deg. F and 90 Deg. F and coolant
temperature within 10 Deg. F of battery/ambient.
Set Condition:
LDP test mu

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