P081A: Starter Disable Circuit Low; Dtc: P081A - Hino Motors HINO 155 series Workshop Manual

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DTC: P081A

P081A: Starter Disable Circuit Low

INFORMATION
+B
+B
ST
Ignition switch Neutral start switch
1. Technical description
• The starter cut relay prevents further rotations of the starter when the starter key is turned after start of the engine.
<Description of malfunction>
• Harness GND short-circuit or disconnection and relay unit failure are detected.
2. DTC set condition
(1) DTC detection condition
• Engine speed of 650 r/min or more. (Request starter cut relay operation)
• Starter key "ON".
• Battery voltage is in the range of 10 V to 16 V.
The conditions described above remain for 5 seconds or longer.
(2) Judgement criteria
• Output of the starter cut relay remains at 10 V or less for 3 seconds or longer.
3. Reset condition
• Just after restoration to normal condition
4. Indication, warning or system control regulation when the DTC is set.
• MIL: OFF
• SVS light: OFF
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>
• Starter operates even when the engine is running.
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.
ENGINE (J05E)/TROUBLESHOOTING
ST1 STA
Engine
ECU
+B
Starter relay
Fuse
+ST
STCR
Starter cut relay
EN01H02127030602016118
To starter
SHTS021270300658