Mitsubishi Fuso CANTER FE85DE6SLGP, Руководство по ремонту

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13E
13E-41
P0653: Sensor Supply Voltage 2 (High) (warning lamp flashes: 81)
P0657: M/V Voltage (Low) (warning lamp flashes: 79)
P0685: EDU Relay (Open) (warning lamp flashes: 84)
P0686: EDU Relay (Low) (warning lamp flashes: 84)
Generation condition
Engine electronic control unit internal voltage (sensor supply voltage 2) is higher
than specification.
Recoverability
System recovers if any valid signal is input when starter switch is turned from
OFF to ON (the warning lamp does not go out unless 3 consecutive valid signals
are input).
Control effected by electronic control unit
• Output to sensor is stopped if voltage is lower than 3.5 V.
• Output level is lowered if voltage is higher than 3.5 V.
Possible causes
• Open-circuited or short-circuited harness between engine electronic control
unit and boost pressure sensor
• Open-circuited or short-circuited harness between engine electronic control
unit and accelerator pedal position sensor 2
• Open-circuited or short-circuited harness between engine electronic control
unit and fuel temperature sensor
• Malfunction of each connector
• Malfunction of boost pressure sensor
• Malfunction of accelerator pedal position sensor 2
• Malfunction of fuel temperature sensor
• Malfunction of engine electronic control unit
Generation condition Exhaust shutter 3-way magnetic valve circuit shorted to ground.
Recoverability
System recovers if any valid signal is input when starter switch is turned from
OFF to ON (the warning lamp does not go out unless 3 consecutive valid signals
are input).
Control effected by electronic control unit Control of auxiliary braking function is stopped.
Possible causes
• Open-circuited or short-circuited harness between engine electronic control
unit and exhaust shutter 3-way magnetic valve
• Malfunction of each connector
• Malfunction of exhaust shutter 3-way magnetic valve
• Malfunction of engine electronic control unit
Generation condition Electronic drive unit relay open-circuited.
Recoverability
System recovers if any valid signal is input when starter switch is turned from
OFF to ON (the warning lamp does not go out unless 3 consecutive valid signals
are input).
Control effected by electronic control unit
• Injection quantity is limited.
• Turbocharger target opening value is replaced by a backup value.
• Exhaust gas recirculation control is stopped.
• Throttle control is stopped.
Possible causes
• Open-circuited or short-circuited harness between engine electronic control
unit and electronic drive unit relay
• Malfunction of each connector
• Malfunction of electronic drive unit relay
• Malfunction of engine electronic control unit
Generation condition Electronic drive unit relay circuit shorted to ground.
Recoverability
System recovers if any valid signal is input when starter switch is turned from
OFF to ON (the warning lamp does not go out unless 3 consecutive valid signals
are input).
Control effected by electronic control unit
• Injection quantity is limited.
• Turbocharger target opening value is replaced by a backup value.
• Exhaust gas recirculation control is stopped.
• Throttle control is stopped.
Possible causes
• Open-circuited or short-circuited harness between engine electronic control
unit and electronic drive unit relay
• Malfunction of each connector
• Malfunction of electronic drive unit relay
• Malfunction of engine electronic control unit