P0605: Flash Rom Error; Dtc: P0605 - Hino Motors HINO 155 series Workshop Manual

DTC: P0605

P0605: Flash ROM error

INFORMATION
1. Technical description
• Engine ECU flash ROM failure is detected.
<Description of malfunction>
• –
2. DTC set condition
(1) DTC detection condition
• Starter key "ON".
(2) Judgement criteria
• Flash ROM check sum error
• Failure determination time ≥ 96 msec
3. Reset condition
• After restoration to normal condition and starter key "OFF"
4. Indication, warning or system control regulation when the DTC is set.
• MIL: ON
• SVS light: ON
• Engine output is restricted.
• Cruise control function is not available.
• Idling stop system is not available.
• Vehicle start control is not available.
• PTO is not available
5. Symptoms on the vehicle when the DTC is set
<Symptoms on the vehicle due to backup control (fail safe function)>
• Engine output is insufficient.
• Cruise control does not work.
• Idling stop system does not work.
• Vehicle start control does not work.
• PTO cannot be used.
<Symptoms on the vehicle due to malfunction>
• –
6. Pre-inspection work
• Check that the battery voltage is in the normal range.
7. After-inspection work
• Clear all past DTCs.
• Check that no DTC is stored after test drive.
8. Estimated failure factors
• Malfunction of engine ECU circuit.
• Temporary malfunction caused by radio frequency interference or noise.
ENGINE (J05E)/TROUBLESHOOTING 2–621
EN01H02127030602016098