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How to Repair HINO 268 Diagnostic Trouble Code P081B
by Dave Jack Auto Car Repair Knowledge HINO 268 starter cut relay prevents further rotations of the starter when the starter switch is turned after start of the engine.More repair case,please check:auto car repair
HINO 268 P081B Trouble Description
• Harness +B short-circuit is detected.
2. DTC set condition
(1) DTC detection condition
• Request for deactivation of starter block is in progress (while engine is stopped).
• Starter switch ON.
• Battery voltage is 10 V – 16 V.
Above conditions continue for at least 5 seconds.
(2) Judgement criteria
• Output of the starter cut relay remains at 10 V or more for 3 seconds or longer.
3. Reset condition
• After restoration to normal condition.
4. Indication, warning or system control regulation when the DTC is set.
• MIL: OFF
• Diag lamp: 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 may not turn over. (If the starter turns over it will not interfere with engine operation.)
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
• Starter cut relay failure
• Engine ECU failure
• Harness +B short-circuit is detected.
2. DTC set condition
(1) DTC detection condition
• Request for deactivation of starter block is in progress (while engine is stopped).
• Starter switch ON.
• Battery voltage is 10 V – 16 V.
Above conditions continue for at least 5 seconds.
(2) Judgement criteria
• Output of the starter cut relay remains at 10 V or more for 3 seconds or longer.
3. Reset condition
• After restoration to normal condition.
4. Indication, warning or system control regulation when the DTC is set.
• MIL: OFF
• Diag lamp: 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 may not turn over. (If the starter turns over it will not interfere with engine operation.)
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
• Starter cut relay failure
• Engine ECU failure
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About Dave Jack 
Auto Car Repair Knowledge
18 connections, 3 recommendations, 173 honor points.Joined APSense since, April 13th, 2017, From Tukwila, United States.
Created on Mar 17th 2020 20:54. Viewed 367 times.
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