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Chrysler 300/300 Touring/300C, Dodge Magnum. Manual - part 1468

VERIFICATION TEST

For a complete wiring diagram Refer to Section 8W.

Diagnostic Test

SELECT THE PROPER VERIFICATION TEST

Select the verification test for the repair that has been completed:

Speed Control repair

Go To 2

Charging System repair

Go To 3

No Start repair

Go To 4

All other repairs

Go To 5

SPEED CONTROL VERIFICATION TEST

1. Inspect the vehicle to ensure that all engine components are properly installed and connected. Reassemble and
reconnect components as necessary.

2. With the scan tool, erase all diagnostic trouble codes (DTCs).

3. Road test the vehicle at a speed above 60 km/h (35 MPH).

4. Turn the speed control ON/OFF switch on.

5. Depress and release the SET switch. If the speed control does not engage, the repair is not complete, continue
with step 12.

6. Quickly depress and release the RESUME/ACCEL switch. If the vehicle speed does not increase by 3 km/h (2
MPH), the repair is not complete, continue with step 12.

7. Using caution, depress and release the brake pedal. If the speed control does not disengage, the repair is not
complete, continue with step 12.

8. With the vehicle speed at least 60 km/h (35 MPH), depress the RESUME/ACCEL switch. If the speed control
does not resume at the previously set speed, the repair is not complete, continue with step 12.

9. Hold down the COAST switch. If the vehicle does not decelerate, the repair is not complete, continue with step
12.

10. While still holding down the COAST switch, ensure the vehicle speed is at least 60 km/h (35 MPH) and release
the COAST switch. If the vehicle does not adjust and set a new vehicle speed, the repair is not complete, continue
with step 12.

11. With the speed control engaged, depress the ON/OFF switch. If the speed control does not disengage, the
repair is not complete, continue with step 12.

12. If the vehicle did not successfully perform all of the previous steps, check for Technical Service Bulletins (TSBs)
that pertain to this speed control problem and then, if necessary, return to the Symptom List.

13. If the vehicle successfully performed all of the previous steps, the speed control system is now functioning as
designed. The repair is now complete.

Are any DTCs or symptoms remaining?

Yes

>> Repair is not complete, refer to the appropriate diagnostic procedure.

>> Repair is complete.

9 - 1896

ENGINE ELECTRICAL DIAGNOSTICS - DIESEL

CHARGING SYSTEM VERIFICATION TEST

1. Inspect the vehicle to ensure that all engine components are properly installed and connected. Reassemble and
reconnect components as necessary.

2. With the scan tool, erase all diagnostic trouble codes (DTCs).

3. Start the engine.

4. Raise the engine speed to 2000 RPM for at least 30 seconds.

5. Allow the engine to idle.

6. Turn the ignition off for 20 seconds.

7. Turn the ignition on.

8. With the scan tool, read ECM DTCs.

9. If this DTC has set again, or another DTC has set, look for any Technical Service Bulletins (TSBs) that may relate
to this condition. Return to the Symptom List if necessary.

10. If the charging system is functioning correctly and there are no DTCs, the repair is now complete.

Are any DTCs or symptoms remaining?

Yes

>> Repair is not complete, refer to the appropriate diagnostic procedure.

>> Repair is complete.

NO START VERIFICATION TEST

NOTE: 1. IMPORTANT! If the Engine Control Module or Sentry Key Immobilizer Module has been replaced,
ensure the programming procedure for the module has been performed in accordance with the Service
Information.
2. Inspect the vehicle to ensure that all engine components are properly installed and connected. Reassemble and
reconnect components as necessary.

3. Inspect the engine oil for contamination. If it is contaminated, change the oil and filter.

4. With the scan tool, erase all diagnostic trouble codes (DTCs).

5. Turn the ignition off for at least 10 seconds.

6. Attempt to start the engine.

7. If the engine is unable to start, look for any Technical Service Bulletins (TSBs) that may relate to this condition.
Return to the Symptom List if necessary.

8. If the engine starts and continues to run, the repair is now complete.

Are any DTCs or symptoms remaining?

Yes

>> Repair is not complete, refer to the appropriate diagnostic procedure.

>> Repair is complete.

ENGINE ELECTRICAL DIAGNOSTICS - DIESEL

9 - 1897

ROAD TEST VERIFICATION TEST

1. Inspect the vehicle to ensure that all engine components are properly installed and connected. Reassemble and
reconnect components as necessary.

2. If this verification procedure is being performed after a non-DTC test, perform steps 3 and 4. If not, proceed to
step 5.

3. Check to see if the initial symptom still exists. If there are no trouble codes and the symptom no longer exists, the
repair was successful and testing is now complete.

4. If the initial or another symptom exists, the repair is not complete. Check all pertinent Technical Service Bulletins
(TSBs) and return to the Symptom List if necessary.

5. For previously read DTCs that have not been dealt with, return to the Symptom List and follow the diagnostic
path for that DTC; otherwise, continue.

6. If the Engine Control Module (ECM) has been replaced, continue with step 9.

7. With the scan tool, erase all diagnostic trouble codes (DTCs), then disconnect the scan tool.

8. Turn the ignition off for at least 10 seconds.

9. If equipped with a Transfer Case Position Switch, perform step 10, otherwise, continue with step 11.

10. With the ignition switch on, place the Transfer Case Shift Lever in each gear position, stopping for 15 seconds
in each position.

11. Road test the vehicle. For some of the road test, go at least 64 km/h (40 MPH). If this test is for an A/C Relay
Control Circuit, drive the vehicle for at least 5 minutes with the A/C on.

12. At some point, stop the vehicle and turn the engine off for at least 10 seconds, then restart the engine and
continue.

13. Upon completion of the road test, turn the engine off and check for DTCs with the scan tool.

14. If the repaired DTC has set again, the repair is not complete. Check for any pertinent Technical Service Bulletins
(TSBs) and return to the Symptom List. If there are no DTCs, the repair was successful and is now complete.

Are any DTCs or symptoms remaining?

Yes

>> Repair is not complete, refer to the appropriate diagnostic procedure.

>> Repair is complete.

9 - 1898

ENGINE ELECTRICAL DIAGNOSTICS - DIESEL

ENGINE - 2.7L DOHC - SERVICE INFORMATION

TABLE OF CONTENTS

page

ENGINE - 2.7L DOHC - SERVICE INFORMATION

DESCRIPTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1901
DIAGNOSIS AND TESTING

ENGINE DIAGNOSIS - INTRODUCTION . . . . 1902
ENGINE DIAGNOSIS - PERFORMANCE . . . . 1903
ENGINE DIAGNOSIS - MECHANICAL . . . . . . . 1904
CYLINDER COMPRESSION PRESSURE