DTC U3000-66: Control Module Signal Has Too Many Transitions / Events: Procedure

1. Using the Techstream, perform the ECM DTC inspection.

   Refer to ON-BOARD DIAGNOSTIC TEST

   Powertrain > Powertrain Control Module > Trouble Codes 

2. Are any DTCs present?

   Result

   Proceed to
   Yes
   No

Result:  2

Yes 

See step  7

Result:  1

No 

See step  2

1. Using the Techstream, perform the combination meter DTC inspection.

   Refer to DTC CHECK / CLEAR

   Body Electrical > Instrument Cluster > Trouble Codes 

2. Are any DTCs present?

   Result

   Proceed to
   Yes
   No

Result:  2

Yes 

See step  6

Result:  1

No 

See step  3

1. Using the Techstream, clear the DTC from the laser sensor.

   Refer to DTC CHECK / CLEAR

   Chassis > Smart City Brake Support > Clear DTCs 

2. Using the Techstream, perform the laser sensor DTC inspection.

   Refer to DTC CHECK / CLEAR

   Chassis > Smart City Brake Support > Trouble Codes 

3. Is the same DTC present?

   Result

   Proceed to
   Yes
   No

Result:  2

Yes 

See step  5

Result:  1

No 

See step  4

1. Are any DTCs present?

   Result

   Proceed to
   Yes
   No

Result:  1

No 

DTC TROUBLESHOOTING COMPLETED. 

Result:  2

Yes 

GO TO APPLICABLE DTC INSPECTION.. Refer to  DIAGNOSTIC TROUBLE CODE CHART 

1. If the malfunction recurs, replace the laser sensor, then go to the next step.

   Refer to REMOVAL

   Result

   Proceed to
   NEXT

Result:  1

NEXT 

See step  4

1. Refer to DIAGNOSTIC TROUBLE CODE CHART
2. DTC troubleshooting completed, then go to the next step.

   Result

   Proceed to
   NEXT

Result:  1

NEXT 

See step  3

1. Refer to DIAGNOSTIC TROUBLE CODE CHART
2. DTC troubleshooting completed, then go to the next step.

   Result

   Proceed to
   NEXT

Result:  1

NEXT 

See step  2