Qr Data Abnormality (Dtc P0602/523538-2, P0602/523538-7) - Kubota V3800-CR-TE4 Diagnosis Manual

V3800-CR-TE4,V3800-CR-TIE4, DM

(26) QR Data Abnormality (DTC P0602/523538-2, P0602/523538-7)

P0602 / 523538-2: QR data error
Behaviour during malfunction:
• Insufficient output
Detection item:
• QR data read error from EEPROM
DTC set preconditions:
• Key switch is ON
DTC set parameter:
• QR correction data exceeds threshold value
• Multiple check error (QR correction data for each injector has been stored in three locations. When this data is
read and compared, an error is determined if there is difference in all three values.)
Engine warning light:
• ON
System action:
• Output limitation: Approximately 50 % of normal condition
Recovery from error:
• Key switch turn OFF
P0602 / 523538-7: No QR data
Behaviour during malfunction:
• Insufficient output
Detection item:
• Area of QR data on EEPROM is vacant
DTC set preconditions:
• Key switch is ON
DTC set parameter:
• When QR correction data fails to write to the EEPROM
(When the initial ECU value is "0", an error that QR data is not written to the disc at the time of vehicle shipment
is detected.)
Engine warning light:
• ON
System action:
• Output limitation: Approximately 50 % of normal condition
Recovery from error:
• Key switch turn OFF
1. Write the QR Codes and Read the DTC Again
1. Using the diagnosis tool, write the correct QR codes in the ECU.
2. Clear the DTC and check whether the same DTC is output
again or not.
Factory
OK
specification
OK An electromagnetic interference (EMI) may have caused the temporary
malfunction. There is no problem if the system has recovered.
NG Faulty Engine ECU.
(a) CAN1 Connector
1-S204
COMMON RAIL SYSTEM
9Y1200192CRS0755US0
9Y1200192CRS0756US0
9Y1200192CRS0367US0
KiSC issued 05, 2012 A