Maintenance manual for sunray hfc4da1-2c china-IV diesel engines
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17.
DTC P060A Communication failure of ECU internal chip CJ940
Fault Description: It is mainly used for monitoring the internal microprocessor integrity failure in ECU to determine
whether the ECU program is executed. With engine OFF and ignition switch ON, the ECU shall perform
self-diagnosis. If the self-diagnosis process is not finished, the control module shall record the corresponding
operating condition and store this information into “Fault Records” to set DTC.
Diagnosis Hint: If the self-diagnosis process is finished smoothly, the current DTC shall be cleared.
If this diagnostic instrument and other diagnosis irrelevant to exhaust pass the test in 40 continuous preheating
processes, the history DTC shall be cleared.
Fault Tree:
Read DTC.
Replace the ECU with a good one for debugging.
Does the problem still exist?
Get the Technical Support.
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