P0606: Control Module Processor; Dtc: P0606 - Hino Motors HINO 155 series Workshop Manual

DTC: P0606

P0606: Control module processor

INFORMATION
1. Technical description
• Engine ECU internal failure is detected.
<Description of malfunction>
• –
2. DTC set condition
(1) DTC detection condition
• Starter key "ON"
(2) Judgement criteria
• IC for monitoring microcomputer failure inside ECU is detected.
• Failure determination time ≥ 96 msec
3. Reset condition
• After restoration to normal condition.
4. Indication, warning or system control regulation when the DTC is set.
• MIL: OFF
• SVS light: ON
• Engine is stopped.
5. Symptoms on the vehicle when the DTC is set
<Symptoms on the vehicle due to backup control (fail safe function)>
• Engine is stopped.
<Symptoms on the vehicle due to malfunction>
• Engine is stalled.
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 detected after test drive.
8. Estimated failure factors
• Malfunction of engine ECU circuit.
• Temporary malfunction caused by radio frequency interference or noise.
ENGINE (J05E)/TROUBLESHOOTING 2–623
EN01H02127030602016099