P1601: Fuel Injector Adjustment Data Error; Dtc: P1601 - Hino Motors HINO 155 series Workshop Manual

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DTC: P1601

P1601: Fuel injector adjustment data error

INFORMATION
QR CODE
Injector
New injector
1. Technical description
• The fuel injection rate is controlled by operation of the injector magnetic valve according to the injector valve-open-
ing interval instructions from the engine ECU. In order to correct for injector manufacturing variations, however, a
variation correction value (injector correction value) is measured, and written into the engine ECU, during the injec-
tor manufacturing process.
<Description of malfunction>
• Faulty injector correction value is detected.
2. DTC set condition
(1) DTC detection condition
• Calibration data (QR codes) are not written.
• Calibration data are 127 or more.
• Calibration data are -128 or less.
• Improper checksum of calibration data
• EEPROM memory failure
(2) Judgement criteria
• Either of these conditions described above remains for 3 seconds or longer.
3. Reset condition
• After restoration to normal condition.
4. Indication, warning or system control regulation when the DTC is set.
• MIL: ON
• SVS light: OFF
ENGINE (J05E)/TROUBLESHOOTING
QR CODE reader
Engine type code
QR CODE
EN01H02127030602016138
Computer
DST-i
Connector
Engine ECU
SHTS021270300736