2006 DODGE RAM SRT-10 engine

2.(K29) APPS NO. 2 SIGNAL CIRCUIT SHORTED TO (F856)APPS NO. 1 5-VOLT SUPPLY
Measure the resistance between the (K29) APPS No. 2 signal circuit in
the sensor harness connector andthe (F856)APPS No. 2 5-volt supply
circuit in the sensor harness connector.
Is the resistance greater than 100 K ohms?
Ye s>>
Go To 3
No>>
Repair the (K29) APPS No. 2 signal circuit shorted to the
(F856)5-volt supply circuit.
Perform POWERTRAIN VERIFICATION TEST VER - 1
(DIESEL). (Refer to 8 - ELECTRICAL/ELECTRONIC CON-
TROL MODULES/ENGINE CONTROL MODULE - DIAG-
NOSIS AND TESTING)
3.(K29) APPS SIGNAL CIRCUIT SHORTED TO ANOTHER CIRCUIT
Measure the resistance between the APPS No. 2 signal circuit at the
ECM harness connector and all other circuits in the ECM harness con-
nector.
Is the resistance greater than 100 k ohms?
Ye s>>
Go To 4
No>>
Repair the (K29) APPS No. 2 signal circuit shorted to
another circuit in the engine harness.
Perform POWERTRAIN VERIFICATION TEST VER - 1
(DIESEL). (Refer to 8 - ELECTRICAL/ELECTRONIC CON-
TROL MODULES/ENGINE CONTROL MODULE - DIAG-
NOSIS AND TESTING)

4.ECM
Reconnect the ECM harness connectors.
Reconnect the APPS harness connector.
While monitoring with the scan tool, disconnect the sensor connector.
Did a APPS No. 1 and APPS No. 2 voltage too low DTC set?
Ye s>>
Go To 5
No>>
Replace and program the ECM in accordance with the Service Information.
Perform POWERTRAIN VERIFICATION TEST VER - 1 (DIESEL). (Refer to 8 - ELECTRICAL/ELEC-
TRONIC CONTROL MODULES/ENGINE CONTROL MODULE - DIAGNOSIS AND TESTING)
5.APPS
Reconnect the APPS harness connector.
Monitor the APPS No. 1 and APPS No. 2 voltage with the scan tool while depressing the throttle pedal.
Is the voltage transition shown on the scan tool smooth while depressing thethrottleandisthevolt-
age from APPS 1 twice as much as from APPS2
Ye s>>
Refer to the INTERMITTENT CONDITION Symptom (Diagnostic Procedure). (Refer to 9 - ENGINE -
DIAGNOSIS AND TESTING)
No>>
Replace the APPS.
Perform POWERTRAIN VERIFICATION TEST VER - 1 (DIESEL). (Refer to 8 - ELECTRICAL/ELEC-
TRONIC CONTROL MODULES/ENGINE CONTROL MODULE - DIAGNOSIS AND TESTING)

When Monitored:
While the engine is running.
Set Condition:
A circuit failure detected at cylinders 1,2, or 3 or any combination of cylinders 1,2, or 3.
Possible Causes
OTHER DTC’S
HIGH SIDE DRIVER CIRCUIT OPEN
LOW SIDE DRIVER CIRCUIT OPEN
HIGH SIDE DRIVER SHORTED TO LOW SIDE DRIVER
HIGH SIDE DRIVERS SHORTED LOW
LOW SIDE DRIVER CIRCUIT SHORTED OTHER LOW SIDE DRIVER CIRCUIT
LOW SIDE DRIVERS SHORTED LOW
HIGH SIDE DRIVER SHORTED TO VOLTAGE
LOW SIDE DRIVER SHORTED TO VOLTAGE
LOW SIDE DRIVER CIRCUIT SHORTED IN INJECTOR HARNESS
INJECTOR
INJECTOR HARNESS
INTERMITTENT CONDITION
ECM
Always perform the Pre-Diagnostic Troubleshooting procedure before proceeding. (Refer to 9 - ENGINE -
DIAGNOSIS AND TESTING)
Diagnostic Test
1.OTHER DTC’S
With the scan tool, read DTCs.
Do you have any combination of DTC’s P0201, P0202, or P0203?
Ye s>>
Repair other DTC’s first.
Perform POWERTRAIN VERIFICATION TEST VER - 1 (DIESEL). (Refer to 8 - ELECTRICAL/ELEC-
TRONIC CONTROL MODULES/ENGINE CONTROL MODULE - DIAGNOSIS AND TESTING)
No>>
Go To 2
2.HIGH SIDE DRIVER CIRCUIT OPEN
Turn the ignition off.
Disconnect the ECM harness connectors.
Disconnect the Injector 1-3 harness connector.
NOTE: Check connectors - Clean/repair as necessary.
Measure the resistance of the injector high side driver circuit between
the Bank 1 high side driver circuit in the ECM harness connector and
the high side driver circuit in the injector harness connectors for cylin-
ders 1-3.
Is the resistance less than 10 Ohms?
Ye s>>
Go To 3
No>>
Repair the open high side driver circuit from ECM harness
connector to the Injector harness connector.
Perform POWERTRAIN VERIFICATION TEST VER - 1
(DIESEL). (Refer to 8 - ELECTRICAL/ELECTRONIC CON-

TROL MODULES/ENGINE CONTROL MODULE - DIAG-
NOSIS AND TESTING)
3.LOW SIDE DRIVER CIRCUIT OPEN
Measure the resistance of the #1,#2, and #3 injector low side driver cir-
cuits between the ECM harness connector and the injector harness
connectors.
Is the resistance less than 10 Ohms?
Ye s>>
Go To 4
No>>
Repair the open low side driver circuit.
Perform POWERTRAIN VERIFICATION TEST VER - 1
(DIESEL). (Refer to 8 - ELECTRICAL/ELECTRONIC CON-
TROL MODULES/ENGINE CONTROL MODULE - DIAG-
NOSIS AND TESTING)
4.HIGH SIDE DRIVER SHORTED TO LOW SIDE DRIVER
Measure the resistance between the Bank 1 high side driver circuit at
the ECM harness connector and the low side driver circuit for injectors
1-3 at the ECM harness connector.
Istheresistancemorethan100kOhms?
Ye s>>
Go To 5
No>>
RepairtheHighsidecircuitshortedtothelowsidecircuit.
Perform POWERTRAIN VERIFICATION TEST VER - 1
(DIESEL). (Refer to 8 - ELECTRICAL/ELECTRONIC CON-
TROL MODULES/ENGINE CONTROL MODULE - DIAG-
NOSIS AND TESTING)

5.HIGH SIDE DRIVERS SHORTED LOW
Measure the resistance of the injector harness connector high side
driver circuits to battery negative for injectors 1-3.
Istheresistancemorethan100kOhms?
Ye s>>
Go To 6
No>>
Repair the High side driver shorted low in the harness.
Perform POWERTRAIN VERIFICATION TEST VER - 1
(DIESEL). (Refer to 8 - ELECTRICAL/ELECTRONIC CON-
TROL MODULES/ENGINE CONTROL MODULE - DIAG-
NOSIS AND TESTING)
6.LOW SIDE DRIVERS SHORTED LOW
Measure the resistance of the injector harness connector Low side
driver circuits to battery negative for injectors 1-3.
Istheresistancemorethan100kOhms?
Ye s>>
Go To 7
No>>
Repair the Low side driver shorted low in the harness.
Perform POWERTRAIN VERIFICATION TEST VER - 1
(DIESEL). (Refer to 8 - ELECTRICAL/ELECTRONIC CON-
TROL MODULES/ENGINE CONTROL MODULE - DIAG-
NOSIS AND TESTING)

7.HIGH SIDE DRIVER SHORTED TO VOLTAGE
Measure the voltage between the high side driver circuit in the engine
harness and battery negative.
Is the voltage less than 1 volt?
Ye s>>
Go To 8
No>>
Repair the high side driver shorted to voltage.
Perform POWERTRAIN VERIFICATION TEST VER - 1
(DIESEL). (Refer to 8 - ELECTRICAL/ELECTRONIC CON-
TROL MODULES/ENGINE CONTROL MODULE - DIAG-
NOSIS AND TESTING)
8.LOW SIDE DRIVER SHORTED TO VOLTAGE
Measure the voltage between the low side driver circuit in the engine
harness and battery negative for cylinders 1-3.
Is the voltage less than 1 volt?
Ye s>>
Go To 9
No>>
Repair the low side driver shorted to voltage.
Perform POWERTRAIN VERIFICATION TEST VER - 1
(DIESEL). (Refer to 8 - ELECTRICAL/ELECTRONIC CON-
TROL MODULES/ENGINE CONTROL MODULE - DIAG-
NOSIS AND TESTING)

9.LOW SIDE DRIVER CIRCUIT SHORTED OTHER LOW SIDE DRIVER CIRCUIT
Measure the resistance of each of the Bank 1 low side driver circuit to
all other Bank 1 low side driver circuits at the ECM harness connector.
Is the resistance greater than 100k ohms?
Ye s>>
Go To 10
No>>
Repair Low side driver circuit shorted to other Low side
driver circuit.
Perform POWERTRAIN VERIFICATION TEST VER - 1
(DIESEL). (Refer to 8 - ELECTRICAL/ELECTRONIC CON-
TROL MODULES/ENGINE CONTROL MODULE - DIAG-
NOSIS AND TESTING)
10.LOW SIDE DRIVER CIRCUIT SHORTED IN INJECTOR HARNESS
Reconnect the disconnected injector harness connector.
Measure the resistance of each of the Bank 1 low side driver circuit to
all other Bank 1 low side driver circuit at the ECM harness connector.
Is the resistance greater than 100k ohms?
Ye s>>
Go To 11
No>>
Replace the injector harness.
Perform POWERTRAIN VERIFICATION TEST VER - 1
(DIESEL). (Refer to 8 - ELECTRICAL/ELECTRONIC CON-
TROL MODULES/ENGINE CONTROL MODULE - DIAG-
NOSIS AND TESTING)

11 .INJECTOR CIRCUITS SHORTED INSIDE ENGINE
Disconnect the injector through head harness connector.
Measure the resistance of each injector from the through head connec-
tor.
NOTE: Be sure to zero the ohm meter prior to checking the injec-
tor circuit.
Is the resistance greater than 0 ohms and less than 1 ohm?
Ye s>>
Go To 12
No>>
Go To 14
12.INJECTOR
Disconnect the pigtail nuts from injectors 1-3.
NOTE: Check connectors - Clean/repair as neces-
sary.
Measure the resistance between the solenoid posts of
each injector.
NOTE: Be sure to zero the ohm meter prior to
checking the injector circuit.
Is the resistance less than 1 ohm and greater
than 0 ohms?
Ye s>>
Go To 13
No>>
Replace the fuel injector or injectors.
Perform POWERTRAIN VERIFICATION
TEST VER - 1 (DIESEL). (Refer to 8 -
ELECTRICAL/ELECTRONIC CONTROL
MODULES/ENGINE CONTROL MODULE -
DIAGNOSIS AND TESTING)