2006 DODGE RAM SRT-10 Service Repair Manual

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Page 737 of 5267

DODGE RAM SRT-10 2006 Service Repair Manual P0607-ECM INTERNAL FAILURE
For a complete wiring diagramRefer to Section 8W.
When Monitored:
With the key on or engine running.
Set Condition:
ECM had detected internal failures.
Possible Causes
ECM
A

Page 738 of 5267

DODGE RAM SRT-10 2006 Service Repair Manual P0622-GENERATOR FIELD NOT SWITCHING PROPERLY
For a complete wiring diagramRefer to Section 8W.

Page 739 of 5267

DODGE RAM SRT-10 2006 Service Repair Manual When Monitored:
When the ignition is on.
Set Condition:
The feedback signal does not match the commanded signal for the voltage regulator.
Possible Causes
GENERATOR
OPEN DRIVER CIRCUIT
GEN SOURCE SHOR

Page 740 of 5267

DODGE RAM SRT-10 2006 Service Repair Manual 2.OPEN DRIVER CIRCUIT
Disconnect the ECM harness connectors.
Check connectors - Clean/repair as necessary.
Measure the resistance of the generator driver wire between the gener-
ator harness connector

Page 741 of 5267

DODGE RAM SRT-10 2006 Service Repair Manual 4.FIELD DRIVER CIRCUIT SHORTED TO VOLTAGE
Measure the voltage between the (K20) generator field driver circuit in
the generator harness connector and battery negative.
Is the voltage greater than 1 vo

Page 742 of 5267

DODGE RAM SRT-10 2006 Service Repair Manual P0628-LOW VOLTAGE DETECTED AT THE FUEL LIFT PUMP
For a complete wiring diagramRefer to Section 8W.

Page 743 of 5267

DODGE RAM SRT-10 2006 Service Repair Manual When Monitored:
Whilethekeyison.
Set Condition:
The commanded signal to the fuel lift pump circuit in the TIPM does not matchthe feedback signal from the
fuel lift pump circuit.
Possible Causes
WIRING

Page 744 of 5267

DODGE RAM SRT-10 2006 Service Repair Manual 4.FUEL LIFT PUMP CONTROL CIRCUIT SHORTED TO EXTERNAL VOLTAGE
Using a voltmeter, measure the voltage between battery negative and the lift pump control circuit at the TPIM con-
nector.
Is the voltage g

4.FUEL LIFT PUMP CONTROL CIRCUIT SHORTED TO EXTERNAL VOLTAGE
Using a voltmeter, measure the voltage between battery negative and the lift pump control circuit at the TPIM con-
nector.
Is the voltage greater than 1 volt?
No>>
Go To 5
Ye s>>
Fix or replace the harness.
Perform POWERTRAIN VERIFICATION TEST VER - 1 (DIESEL). (Refer to 8 - ELECTRICAL/ELEC-
TRONIC CONTROL MODULES/ENGINE CONTROL MODULE - DIAGNOSIS AND TESTING)
5.FUEL LIFT PUMP CONTROL CIRCUIT SHORTED TO OTHER CIRCUITS
Using an ohmmeter, measure the resistance between the lift pump control circuit in the ECM connector and all other
circuits in the ECM connectors.
Is the resistance less than 10 Ohms?
Ye s>>
Fix or replace the harness.
Perform POWERTRAIN VERIFICATION TEST VER - 1 (DIESEL). (Refer to 8 - ELECTRICAL/ELEC-
TRONIC CONTROL MODULES/ENGINE CONTROL MODULE - DIAGNOSIS AND TESTING)
No>>
Go To 6
6.FUEL LIFT PUMP CONTROL CIRCUIT SHORTED TO EXTERNAL VOLTAGE
Connect the ECM and TIPM connectors.
Using a back probing tool 6801, back probe the lift pump control circuit in from TIPM connector.
Toggle the lift pump actuator with the Electronic Service Tool.
Using a 12 volt test light connected to battery negative, check the lift pump circuit at the TIPM connector.
NOTE: The test light must illuminate brightly.
Compare the brightness to that of a direct connection to the battery.
Does the test light cycle on and off and illuminate brightly?
No>>
Replace the ECM
Perform POWERTRAIN VERIFICATION TEST VER - 1 (DIESEL). (Refer to 8 - ELECTRICAL/ELEC-
TRONIC CONTROL MODULES/ENGINE CONTROL MODULE - DIAGNOSIS AND TESTING)
Ye s>>
Go To 7
7.FUEL LIFT PUMP DRIVER CIRCUIT SHORTED TO OTHER CIRCUITS
Using a back probing tool, back probe the lift pump control circuit in the TIPM connector.
Toggle the lift pump actuator with the scan Tool.
Using a 12 volt test light connected to battery negative, check the lift pump control circuit at the TIPM connector.
NOTE: The test light must illuminate brightly.
Compare the brightness to that of a direct connection to the battery.
Does the test light cycle on and off and illuminate brightly?
Ye s>>
Te s t c o m p l e t e .
Perform Intermittent Condition test. (Refer to 9 - ENGINE - DIAGNOSIS AND TESTING)
No>>
Replace the TPIM
Perform POWERTRAIN VERIFICATION TEST VER - 1 (DIESEL). (Refer to 8 - ELECTRICAL/ELEC-
TRONIC CONTROL MODULES/ENGINE CONTROL MODULE - DIAGNOSIS AND TESTING)

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