Dtc: P04D5 And P04D6; P04D5: Exhaust Brake - Circuit (Circuit Low) - Hino Motors HINO 155 series Workshop Manual

DTC: P04D5 and P04D6

P04D5: Exhaust brake - circuit (Circuit low)

INFORMATION
1. Technical description
• –
<Description of malfunction>
• Exhaust brake magnetic valve is not working properly.
• Possible magnetic valve failure or GND short-circuit
2. DTC set condition
(1) DTC detection condition
• Exhaust brake inactivity request is in progress.
• Starter key "ON".
• Battery voltage is in the range of 10 V to 16 V.
(2) Judgement criteria
• The condition that the exhaust brake magnetic valve circuit voltage is 2.8 V or less remains for 3 seconds or
more.
3. Reset condition
• Immediately after normal operation is restored.
4. Indication, warning or system control regulation when the DTC is set.
• MIL: ON
• SVS light: OFF
• The auxiliary brake control is stopped.
5. Symptoms on the vehicle when the DTC is set
<Symptoms on the vehicle due to backup control (fail safe function)>
• –
<Symptoms on the vehicle due to malfunction>
• –
ENGINE (J05E)/TROUBLESHOOTING
F ENG-2 30A
NAT %X7
(L ) (+ )
Exhasut brake
magnetic valve
Engine ECU
Max : 61.1A
Rating : 14.5A
X36
(L)
Z23
(-S)
Actuator power relay
EN01H02127030602016085
U2-ACT
X35
N1B
(B)
(L )
N16
(+S)
SHTS021270300500
2–545