Page 715 of 5267
P0563-BATTERY VOLTAGE HIGH
For a complete wiring diagramRefer to Section 8W.
Page 718 of 5267
P0572-LOW VOLTAGE DETECTED AT THE BRAKE SWITCH
For a complete wiring diagramRefer to Section 8W.
Page 722 of 5267
P0573-HIGH VOLTAGE DETECTED AT THE BRAKE SWITCH
For a complete wiring diagramRefer to Section 8W.
Page 725 of 5267
P0580-LOW VOLTAGE DETECTED AT THE SPEED CONTROL SWITCH
For a complete wiring diagramRefer to Section 8W.
Page 729 of 5267
P0581-HIGH VOLTAGE DETECTED AT THE SPEED CONTROL SWITCH
For a complete wiring diagramRefer to Section 8W.
Page 734 of 5267
P0602-CHECKSUM ERROR
For a complete wiring diagramRefer to Section 8W.
When Monitored:
While the ignition is on.
Set Condition:
A deviation between the ECM memory and a stored calibration.
Possible Causes
FLASH ECM
ECM
Always perform the Pre-Diagnostic Troubleshooting procedure before proceeding. (Refer to 9 - ENGINE -
DIAGNOSIS AND TESTING)
Diagnostic Test
1.FLASH ECM
Using the scan tool, reflash the ECM with the proper calibration for the particular truck.
Is the flash successful?
Ye s>>
Repair complete.
No>>
Go To 2
2.ECM
With the scan tool, read DTCs.
Did P0602 set after the reflash?
Ye s>>
Replace the ECM.
No>>
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)
Page 735 of 5267
P0604-ECM SOFTWARE ERROR
For a complete wiring diagramRefer to Section 8W.
When Monitored:
Whilethekeyison.
Set Condition:
Internal ECM software error.
Possible Causes
REFLASH ECM
ECM
Always perform the Pre-Diagnostic Troubleshooting procedure before proceeding. (Refer to 9 - ENGINE -
DIAGNOSIS AND TESTING)
Diagnostic Test
1.REFLASH ECM
Using the scan tool, reflash the module with latest calibration
Was the flash successful?
Ye s>>
Go To 2
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)
2.ECM
Run the engine for one minute and shut off.
With the scan tool, read DTCs.
Did P0604 set?
Ye s>>
Replace the ECM.
Perform POWERTRAIN VERIFICATION TEST VER - 1 (DIESEL). (Refer to 8 - ELECTRICAL/ELEC-
TRONIC CONTROL MODULES/ENGINE CONTROL MODULE - DIAGNOSIS AND TESTING)
No>>
Te s t C o m p l e t e .
Page 736 of 5267
P0606-ECM HARDWARE ERROR
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
Always perform the Pre-Diagnostic Troubleshooting procedure before proceeding. (Refer to 9 - ENGINE -
DIAGNOSIS AND TESTING)
Diagnostic Test
1.ECM
Turn the ignition on.
NOTE: This DTC is caused by an internal Engine Control Module failure. Repairs are not possible to the
ECM.
With the scan tool, erase DTCs.
Is the DTC still set?
Ye s>>
Replace and program the ECM in accordance with the Service Information.
Perform POWERTRAIN VERIFICATION TEST VER - 1 (DIESEL). (Refer to 8 - ELECTRICAL/ELEC-
TRONIC CONTROL MODULES/ENGINE CONTROL MODULE - DIAGNOSIS AND TESTING)
No>>
Te s t C o m p l e t e .