Chrysler 300/300 Touring/300C, Dodge Magnum. Manual — part 1374

4.

INTERMITTENT SPEED CONTROL DTC

The conditions necessary to set this DTC are not present at this time.

While monitoring the scan tool data relative to this circuit, move the Speed Control Switch to each position several
times.

Look for the DTC to reset while the switch is being moved to each position.

Were any problems found?

Yes

>> Repair as necessary.

No

>> Test complete.

9 - 1520

ENGINE ELECTRICAL DIAGNOSTICS - DIESEL

LX

P0607-ECU INTERNAL PERFORMANCE

For a complete wiring diagram Refer to Section 8W

•

When Monitored:
With the ignition on.

•

Set Condition:
The Engine Control Module (ECM) detects an internal failure.

Possible Causes

INTERMITTENT DTC

ENGINE CONTROL MODULE (ECM)

Always perform the Pre-Diagnostic Troubleshooting procedure before proceeding. (Refer to 9 - ENGINE -
DIAGNOSIS AND TESTING)

Diagnostic Test

1.

DTC IS ACTIVE

Ignition on, engine not running.

With the scan tool, Clear DTCs in the Engine Control Module (ECM).

Monitor the scan tool for at least two minutes.

Cycle the ignition key off and on several times, leaving the ignition on for at least 10 seconds at a time.

Start the engine.

Perform several engine run cycles, turning the ignition off for at least 20 seconds between each engine run cycle.

With the scan tool, select View DTCs.

Is the status Active for this DTC?

Yes

>> Go To 2

No

>> Refer to the *CHECKING FOR AN INTERMITTENT DTC Diagnostic Procedure. (Refer to 9 - ENGINE -

DIAGNOSIS AND TESTING)

2.

ENGINE CONTROL MODULE (ECM)

Using the wiring diagram/schematic as a guide, inspect the Engine Control Module (ECM) wiring and connectors.

Look for any chafed, pierced, pinched, or partially broken wires.

Look for broken, bent, pushed out or corroded terminals.

Monitor the scan tool data relative to this circuit and wiggle test the wiring and connectors.

Look for the data to change or for the DTC to reset during the wiggle test.

Check for proper ECM power supply from the ignition switch and the ASD relay. Check the ECM for proper ground
supply.

Refer to any Technical Service Bulletins that may apply.

Were any problems found?

Yes

>> Repair as necessary.

Perform the ECM Verification Test Ver. 1. (Refer to 9 - ENGINE - DIAGNOSIS AND TESTING)

No

>> Replace the Engine Control Module (ECM) in accordance with the Service Information.

Perform the ECM Verification Test Ver. 1. (Refer to 9 - ENGINE - DIAGNOSIS AND TESTING)

LX

ENGINE ELECTRICAL DIAGNOSTICS - DIESEL

9 - 1521

P0610-ECU VEHICLE OPTIONS MISMATCH

For a complete wiring diagram Refer to Section 8W

•

When Monitored:
With the ignition on.

•

Set Condition:
The Engine Control Module (ECM) detects an internal failure.

Possible Causes

INTERMITTENT DTC

ENGINE CONTROL MODULE (ECM)

Always perform the Pre-Diagnostic Troubleshooting procedure before proceeding. (Refer to 9 - ENGINE -
DIAGNOSIS AND TESTING)

Diagnostic Test

1.

DTC IS ACTIVE

Ignition on, engine not running.

With the scan tool, Clear DTCs in the Engine Control Module (ECM).

Monitor the scan tool for at least two minutes.

Cycle the ignition key off and on several times, leaving the ignition on for at least 10 seconds at a time.

Start the engine.

Perform several engine run cycles, turning the ignition off for at least 20 seconds between each engine run cycle.

With the scan tool, select View DTCs.

Is the status Active for this DTC?

Yes

>> Go To 2

No

>> Refer to the *CHECKING FOR AN INTERMITTENT DTC Diagnostic Procedure. (Refer to 9 - ENGINE -

DIAGNOSIS AND TESTING)

2.

ENGINE CONTROL MODULE (ECM)

Using the wiring diagram/schematic as a guide, inspect the Engine Control Module (ECM) wiring and connectors.

Look for any chafed, pierced, pinched, or partially broken wires.

Look for broken, bent, pushed out or corroded terminals.

Monitor the scan tool data relative to this circuit and wiggle test the wiring and connectors.

Look for the data to change or for the DTC to reset during the wiggle test.

Refer to any Technical Service Bulletins that may apply.

Were any problems found?

Yes

>> Repair as necessary.

Perform the ECM Verification Test Ver. 1. (Refer to 9 - ENGINE - DIAGNOSIS AND TESTING)

No

>> Replace the Engine Control Module (ECM) in accordance with the Service Information.

Perform the ECM Verification Test Ver. 1. (Refer to 9 - ENGINE - DIAGNOSIS AND TESTING)

9 - 1522

ENGINE ELECTRICAL DIAGNOSTICS - DIESEL

LX

P0613-INTERNAL TRANSMISSION PROCESSOR

For a complete wiring diagram Refer to Section 8W

•

When Monitored:
With the ignition on.

•

Set Condition:
The ECM receives a CAN Bus message indicating the presence of a DTC in the TCM.

Possible Causes

VERIFY CURRENT DTC

Always perform the Pre-Diagnostic Troubleshooting procedure before proceeding. (Refer to 9 - ENGINE -
DIAGNOSIS AND TESTING)

Diagnostic Test

1.

VERIFY CURRENT DTC

NOTE: Diagnose and repair all ECM DTCs prior diagnosing any DTCs set in the TCM.

NOTE: This code was set in the ECM by the Transmission Control Module to indicate a transmission fault.
Diagnosis of transmission faults should be done using the Transmission Diagnostic Information.

NOTE: When repairs have been completed, DTCs in the ECM and TCM must be cleared.
Turn the ignition on.

With the scan tool, erase ECM DTCs only.

With the scan tool, read ECM DTCs.

Does this DTC reset?

Yes

>> Refer to Transmission Diagnostic Information for the related symptom(s).

No

>> Test Complete.

LX

ENGINE ELECTRICAL DIAGNOSTICS - DIESEL

9 - 1523