2006 DODGE RAM SRT-10 fuse

P0381-WAIT TO START LAMP INOPERATIVE
For a complete wiring diagramRefer to Section 8W.
When Monitored:
Ignition on.
Set Condition:
The cluster sends a signal to the ECM that it has detected a failed wait to start lamp.
Possible Causes
FUSED IGNITION SWITCH OUTPUT CIRCUIT OPEN
WAIT-TO-START LIGHT BULB
WIRING/CONNECTOR PROBLEM
ECM
Always perform the Pre-Diagnostic Troubleshooting procedure before proceeding. (Refer to 9 - ENGINE -
DIAGNOSIS AND TESTING)
Diagnostic Test
1.WAIT-TO-START LAMP DOES NOT COME ON
Turn the ignition off.
While watching the wait-to-start lamp, turn the ignition key on.
Did the wait-to-start lamp light?
Ye s>>
Go To 2
No>>
Go To 3
2.WAIT-TO-START LAMP STAYS ON ALL THE TIME
Turn the ignition off.
While watching the wait-to-start lamp, turn the ignition key on.
Does the wait-to-start lamp stay on all the time?
Ye s>>
Go To 3
No>>
Wait-to-start Lamp operating normally. Test passed.
Perform POWERTRAIN VERIFICATION TEST VER - 1 (DIESEL). (Refer to 8 - ELECTRICAL/ELEC-
TRONIC CONTROL MODULES/ENGINE CONTROL MODULE - DIAGNOSIS AND TESTING)

3.FUSED IGNITION SWITCH OUTPUT CIRCUIT OPEN
Turn the ignition off.
Remove the cluster.
NOTE: Check connectors - Clean/repair as necessary.
Turn the ignition on.
Using a 12-Volt test Light, check the Fused Ignition Switch Run/Start
circuit.
Is the light illuminated and bright?
Ye s>>
Go To 4
No>>
Repair the open fused Ignition Switch Output circuit.
Perform POWERTRAIN VERIFICATION TEST VER - 1
(DIESEL). (Refer to 8 - ELECTRICAL/ELECTRONIC CON-
TROL MODULES/ENGINE CONTROL MODULE - DIAG-
NOSIS AND TESTING)
4.WAIT-TO-START LIGHT BULB
Remove and inspect the Wait-to-Start Bulb.
Is the Bulb Ok?
Ye s>>
Te s t c o m p l e t e .
No>>
Replace the Wait-to-Start Bulb.
Perform POWERTRAIN VERIFICATION TEST VER - 1 (DIESEL). (Refer to 8 - ELECTRICAL/ELEC-
TRONIC CONTROL MODULES/ENGINE CONTROL MODULE - DIAGNOSIS AND TESTING)

P0477-LOW VOLTAGE ON THE ENGINE BRAKE DRIVER
For a complete wiring diagramRefer to Section 8W.
When Monitored:
When the ignition is on.
Set Condition:
When the signal from the engine brake driver output does not match the signal from the engine brake driver
feedback.
Possible Causes
WIRING HARNESS
ENGINE BRAKE DRIVER RELAY
FUSED B+ OPEN
ENGINE BRAKE DRIVER SIGNAL CIRCUIT OPEN
INTERMITTENT CONDITION
ENGINE BRAKE DRIVER SIGNAL CIRCUIT SHORTED TO BATTERY NEGATIVE
ECM
Always perform the Pre-Diagnostic Troubleshooting procedure before proceeding. (Refer to 9 - ENGINE -
DIAGNOSIS AND TESTING)
Diagnostic Test
1.RELAY CLICKING
Turn the engine off (ignition on).
With the scan tool, actuate the exhaust brake relay.
Can you hear the Relay clicking?
Ye s>>
Go To 2
No>>
Go To 3
2.WIRING HARNESS
With the scan tool, actuate the exhaust brake relay.
While the relay is clicking, wiggle the wiring harness and connectors throughout the circuit.
Does this interrupt the clicking?
Ye s>>
Repair or replace the wiring 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 3
3.Engine Brake Driver Relay
Remove the Engine Brake Driver Relay.
Check connectors - Clean/repair as necessary.
Measure the resistance between terminals 86 and 85 of the engine brake relay.
Is the resistance less than 100 Ohms?
Ye s>>
Go To 4
No>>
Replace the Engine Brake Driver Relay.
Perform POWERTRAIN VERIFICATION TEST VER - 1 (DIESEL). (Refer to 8 - ELECTRICAL/ELEC-
TRONIC CONTROL MODULES/ENGINE CONTROL MODULE - DIAGNOSIS AND TESTING)

4.FUSED B+ OPEN
Ignition on, engine not running.
Measure the voltage of the Fused B+ Supply circuit at the Engine Brake Relay.
Is the voltage within 10% of battery voltage?
Ye s>>
Go To 5
No>>
Repair the open B+ circuit.
Perform POWERTRAIN VERIFICATION TEST VER - 1 (DIESEL). (Refer to 8 - ELECTRICAL/ELEC-
TRONIC CONTROL MODULES/ENGINE CONTROL MODULE - DIAGNOSIS AND TESTING)
5.ENGINE BRAKE DRIVER SIGNAL CIRCUIT OPEN
Turn the ignition off.
Disconnect the ECM harness connectors.
Check connectors - Clean/repair as necessary.
Measure the resistance of the Engine Brake Driver signal circuit between the Relay harness connector and the ECM
harness connector.
Is the resistance less than 10 Ohms?
Ye s>>
Go To 6
No>>
Repair the open Engine Brake driver circuit open from relay to ECM.
Perform POWERTRAIN VERIFICATION TEST VER - 1 (DIESEL). (Refer to 8 - ELECTRICAL/ELEC-
TRONIC CONTROL MODULES/ENGINE CONTROL MODULE - DIAGNOSIS AND TESTING)
6.ENGINE BRAKE DRIVER SIGNAL CIRCUIT SHORTED TO BATTERY NEGATIVE
Measure the resistance of the Engine Brake Driver signal circuit between the Relay connector and battery negative.
Is the resistance greater than 100k Ohms?
Ye s>>
Go To 7
No>>
Repair Engine brake driver shorted to Battery negative.
Perform POWERTRAIN VERIFICATION TEST VER - 1 (DIESEL). (Refer to 8 - ELECTRICAL/ELEC-
TRONIC CONTROL MODULES/ENGINE CONTROL MODULE - DIAGNOSIS AND TESTING)
7.ECM
Reconnect the ECM harness connectors.
Using the scan tool, actuate the Engine Brake Driver Relay.
While monitoring with the scan tool, use a jumper wire to connect 12 volts tothe relay signal circuit with the relay
disconnected.
Did the DTC P0478?
Ye s>>
Refer to the INTERMITTENT CONDITION Symptom (Diagnostic Procedure). (Refer to 9 - ENGINE -
DIAGNOSIS AND TESTING)
No>>
Replace ECM.
Perform POWERTRAIN VERIFICATION TEST VER - 1 (DIESEL). (Refer to 8 - ELECTRICAL/ELEC-
TRONIC CONTROL MODULES/ENGINE CONTROL MODULE - DIAGNOSIS AND TESTING)

4.FUSED BATTERY SUPPLY
Connect the ECM and TIPM connectors.
Ignition on, engine not running.
Using a back probing tool 6801, back probe the A/C clutch logic pin in the TIPM logic connector.
Usinga12volttestlightconnectedtobatterypositive,checkthetransmission logic circuit at the TIPM connector
while actuating the A/C clutch circuit with the Electronic Service Tool.
NOTE: The test light must illuminate brightly.
Compare the brightness to that of a direct connection to the battery.
Does the test light illuminate brightly?
Ye s>>
Go To 5
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)
5.TIPM
Using a back probing tool, back probe the A/C clutch power pin from the TIPM power connector.
Using a 12 volt test light connected to battery positive, check the transmission power circuit at the TIPM connector
while actuating the A/C clutch circuit with the Electronic Service Tool.
NOTE: The test light must illuminate brightly.
Compare the brightness to that of a direct connection to the battery.
Does the test light 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 TIPM.
Perform POWERTRAIN VERIFICATION TEST VER - 1 (DIESEL). (Refer to 8 - ELECTRICAL/ELEC-
TRONIC CONTROL MODULES/ENGINE CONTROL MODULE - DIAGNOSIS AND TESTING)

When Monitored:
Continuous - key on or key off.
Set Condition:
Loss of voltage detected at the ECM for a calibrated amount of time.
Possible Causes
POOR CONNECTIONS AT THE BATTERIES
LOW BATTERY VOLTAGE
OPEN FUSED B+ TO ECM
OPEN GROUND CIRCUIT
BATTERY + SHORTED TO OTHER CIRCUITS
RETURN CIRCUIT SHORTED
BATTERY + SHORTED TO GROUND
INTERMITTENT CONDITION
Always perform the Pre-Diagnostic Troubleshooting procedure before proceeding. (Refer to 9 - ENGINE -
DIAGNOSIS AND TESTING)
Diagnostic Test
1.POOR CONNECTIONS AT THE BATTERIES
Visually inspect the wiring at the battery for damaged wires, or corrosion.
Are the connections tight and free of corrosion?
Ye s>>
Go To 2
No>>
Repair the poor connections at the batteries.
Perform POWERTRAIN VERIFICATION TEST VER - 1 (DIESEL). (Refer to 8 - ELECTRICAL/ELEC-
TRONIC CONTROL MODULES/ENGINE CONTROL MODULE - DIAGNOSIS AND TESTING)
2.L O W B AT T E RY V O LTA G E
Measure the voltage between the positive and negative posts of the batteries.
Is the battery voltages both above 12 volts?
Ye s>>
Go To 3
No>>
Recharge or replace the battery (s).
Perform POWERTRAIN VERIFICATION TEST VER - 1 (DIESEL). (Refer to 8 - ELECTRICAL/ELEC-
TRONIC CONTROL MODULES/ENGINE CONTROL MODULE - DIAGNOSIS AND TESTING)

3.OPEN FUSED B+ TO ECM
Turn the ignition off.
Disconnect the ECM harness connectors.
Turn the ignition on.
Measure the resistance between the positive battery post and the ECM
supply circuits.
Is the resistance less than 10 Ohms?
Ye s>>
Go To 4
No>>
Repair the open fused B+ circuit to ECM.
Perform POWERTRAIN VERIFICATION TEST VER - 1
(DIESEL). (Refer to 8 - ELECTRICAL/ELECTRONIC CON-
TROL MODULES/ENGINE CONTROL MODULE - DIAG-
NOSIS AND TESTING)
4.OPEN GROUND CIRCUIT
Measure the resistance between the negative battery post and the ECM
ground circuits.
Is the resistance less than 10 Ohms?
Ye s>>
Go To 5
No>>
Repair the open ground circuit.
Perform POWERTRAIN VERIFICATION TEST VER - 1
(DIESEL). (Refer to 8 - ELECTRICAL/ELECTRONIC CON-
TROL MODULES/ENGINE CONTROL MODULE - DIAG-
NOSIS AND TESTING)
5.BATTERY + SHORTED TO OTHER CIRCUITS
Measure the resistance between the ECM supply circuits and all other
circuits in the ECM harness connector, except other supply circuits.
Is the resistance greater than 100k Ohms?
Ye s>>
Go To 6
No>>
Repair the battery circuit short to other circuits in engine
harness.
Perform POWERTRAIN VERIFICATION TEST VER - 1
(DIESEL). (Refer to 8 - ELECTRICAL/ELECTRONIC CON-
TROL MODULES/ENGINE CONTROL MODULE - DIAG-
NOSIS AND TESTING)

*CHECKING THE ECM POWER AND GROUNDS
For a complete wiring diagramRefer to Section 8W.
Possible Causes
ECM GROUND CIRCUIT(S) OPEN
FUSED B+ CIRCUIT OPEN
FUSED IGNITION SWITCH OUTPUT CIRCUIT OPEN
Diagnostic Test
1.ECM GROUND CIRCUIT(S) OPEN
Turn the ignition off.
Disconnect the ECM harness connectors.
Using a 12-volt test light connected to 12-volts, check each of the ECM ground circuits in ECM harness connector.
Did the test light illuminate for each cavity?
Ye s>>
Go To 2
No>>
Repair the ECM Ground circuit(s) for an open.
Perform POWERTRAIN VERIFICATION TEST VER - 1 (DIESEL). (Refer to 8 - ELECTRICAL/ELEC-
TRONIC CONTROL MODULES/ENGINE CONTROL MODULE - DIAGNOSIS AND TESTING)
2.FUSED IGNITION SWITCH OUTPUT CIRCUIT OPEN
Turn the ignition off.
Disconnect the ECM harness connectors.
Turn the ignition on.
Using a 12-volt test light connected to ground, check the Fused Ignition Switch Output circuit in ECM harness con-
nector.
Is the test light on?
Ye s>>
Go To 3
No>>
Repair the Fused Ignition Switch Output circuit for an open.
Perform POWERTRAIN VERIFICATION TEST VER - 1 (DIESEL). (Refer to 8 - ELECTRICAL/ELEC-
TRONIC CONTROL MODULES/ENGINE CONTROL MODULE - DIAGNOSIS AND TESTING)
3.FUSED B+ CIRCUIT OPEN
Turn the ignition off.
Disconnect the ECM harness connectors.
Using a 12-volt test light connected to ground, check each Fused B+ circuitin the ECM harness connector.
Does the test light illuminatebrightly for each circuit?
Ye s>>
Te s t C o m p l e t e .
Perform POWERTRAIN VERIFICATION TEST VER - 1 (DIESEL). (Refer to 8 - ELECTRICAL/ELEC-
TRONIC CONTROL MODULES/ENGINE CONTROL MODULE - DIAGNOSIS AND TESTING)
No>>
Repair the Fused B+ Output circuit for an open.
Perform POWERTRAIN VERIFICATION TEST VER - 1 (DIESEL). (Refer to 8 - ELECTRICAL/ELEC-
TRONIC CONTROL MODULES/ENGINE CONTROL MODULE - DIAGNOSIS AND TESTING)