2006 DODGE RAM SRT-10 Service Repair Manual

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Page 1049 of 5267

DODGE RAM SRT-10 2006 Service Repair Manual P0161-O2 SENSOR 2/2 HEATER PERFORMANCE
For a complete wiring diagramRefer to Section 8W.

Page 1050 of 5267

DODGE RAM SRT-10 2006 Service Repair Manual When Monitored:
With battery voltage greater than 9 volts, at a cold start, ECT less than 147°F, battery temperature sensor
equal to or less than 27°F, and engine at idle for at least 12 seconds.
Se

Page 1051 of 5267

DODGE RAM SRT-10 2006 Service Repair Manual 3.(K344) O2 SENSOR HEATER RELAY OUTPUT CIRCUIT
Ignition on, engine not running and the O2 Sensor still disconnected.
With the scan tool, actuate the O2 Heater Test.
Using a 12-volt test light connecte

Page 1052 of 5267

DODGE RAM SRT-10 2006 Service Repair Manual 6.(Z1) HEATER GROUND CIRCUIT OPEN
Using a 12-volt test light connected to 12-volts, probe the (Z1) O2
Heater Ground circuit at the O2 Sensor harness connector.
Does the test light illuminate brightly?

Page 1053 of 5267

DODGE RAM SRT-10 2006 Service Repair Manual P0171-FUEL SYSTEM 1/1 LEAN
For a complete wiring diagramRefer to Section 8W.

Page 1054 of 5267

DODGE RAM SRT-10 2006 Service Repair Manual Theory of Operation
The fuel feedback system will maintain a stoiciometric fuel/air mixture,14.7:1, by modifying the injector pulsewidth
according to the oxygen content of the exhaust gas. The PCM mak

Page 1055 of 5267

DODGE RAM SRT-10 2006 Service Repair Manual 2.CHECKING FUEL PRESSURE
WARNING: The fuel system is under a constant pressure (even with the engineoff). Before testing or ser-
vicing any fuel system hose, fitting or line, the fuel system pressure

2.CHECKING FUEL PRESSURE
WARNING: The fuel system is under a constant pressure (even with the engineoff). Before testing or ser-
vicing any fuel system hose, fitting or line, the fuel system pressure mustbe released.
Install a fuel pressure gauge.
Ignition on, engine not running.
With the scan tool, actuate the ASD FuelSystem test and observe the fuel pressure gauge.
NOTE: Fuel pressure specification is 379 KPa +/- 14 KPa (55 psi +/- 2 psi).
Turn the ignition off.
Choose a conclusion that best matches your fuel pressure reading.
Below Specification
Go To 3
Within Specification
Go To 6
Above Specification
Replace the fuel filter/pressure regulator.
Perform the POWERTRAIN VERIFICATION TEST. (Refer to 9 - ENGINE - STANDARD PROCEDURE)
CAUTION: Stop All Actuations.
3.RESTRICTED FUEL SUPPLY LINE
Turn the ignition off.
WARNING: The fuel system is under a constant pressure (even with the engineoff). Before testing or ser-
vicing any fuel system hose, fitting or line, the fuel system pressure mustbe released.
Raise vehicle on hoist, and disconnect the fuel pressure line at the fuel pump module.
Install special 5/16 fuel line adapter tool #6539 or #6631 for 3/8 fuel lineadapter, between the disconnected fuel line
and the fuel pump module.
Attach a fuel pressure test gauge to the T fitting on tool #6539 or #6631.
Ignition on, engine not running.
With the scan tool, actuate the ASD FuelSystem test and observe the fuel pressure gauge.
NOTE: Fuel pressure specification is 379 KPa +/- 14 KPa (55 psi +/- 2 psi).
CAUTION: Stop All Actuations.
Is the fuel pressure within specification?
Ye s>>
Repair or replace fuel supply line as necessary.
Perform the POWERTRAIN VERIFICATION TEST. (Refer to 9 - ENGINE - STANDARD PROCEDURE)
No>>
Go To 4
4.FUEL PUMP INLET STRAINER
Turn the ignition off.
WARNING: The fuel system is under a constant pressure (even with the engineoff). Before testing or ser-
vicing any fuel system hose, fitting or line, the fuel system pressure mustbe released.
Remove the Fuel Pump Module and inspect the Fuel Inlet Strainer.
Is the Fuel Inlet Strainer plugged?
Ye s>>
Replace the Fuel Pump Inlet Strainer.
Perform the POWERTRAIN VERIFICATION TEST. (Refer to 9 - ENGINE - STANDARD PROCEDURE)
No>>
Go To 5

Page 1056 of 5267

DODGE RAM SRT-10 2006 Service Repair Manual 5.FUEL PUMP MODULE
If there are no possible causes remaining, view repair.
Repair
Replace the Fuel Pump Module.
Perform the POWERTRAIN VERIFICATION TEST. (Refer to 9 - ENGINE - STANDARD PROCEDURE)
6.O

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