P1530: Engine Stop Switch Malfunction; Dtc: P1530 - Hino Motors HINO 155 series Workshop Manual

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DTC: P1530

P1530: Engine stop switch malfunction

INFORMATION
Engine ECU
1. Technical description
• Through the engine stop switch, the ECU senses engine stop signals.
<Description of malfunction>
• The engine stop switch cannot correctly sense.
2. DTC set condition
(1) DTC detection condition
• Battery voltage is in the range of 10 V to 16 V.
(2) Judgement criteria
• At a vehicle speed of 30 km/h, the stop switch remains in ON position for 1 second or longer.
3. Reset condition
• After normal operation is restored and the starter key is turned "LOCK".
4. Indication, warning or system control regulation when the DTC is set.
• MIL: OFF
• SVS light: OFF
• Engine stop switch 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 stop switch cannot be used.
<Symptoms on the vehicle due to malfunction>
• Engine cannot start.
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
• Harness disconnection or short-circuit
• Looseness or poor contact of connector
• Malfunction of switch (Stuck on ON)
• Malfunction of ECU
ENGINE (J05E)/TROUBLESHOOTING
6.5mA
Y5V
(PTO)
6.5mA
$XU
(PTO2)
0.1A
XUM
(ESTP)
6.4mA
#X2
(PTOC)
Engine stop switch
%8H
(PSW1)
%8J
(PSW2)
%8K
(ESSW)
%8L
(PCRL)
EN01H02127030602016137
SHTS021270300734