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13-47
P125D: Rail Pressure M/V 2 (Long Short) (warning lamp flashes: 63)
P1335: Revolution & Position Sensor (warning lamp flashes: 14)
P1460: Auxiliary Brake M/V 1 (warning lamp flashes: 93)
P1462: Auxiliary Brake M/V 1 (warning lamp flashes: 93)
Generation condition
MPROP2 (rail pressure control valve) circuit remains shorted to ground as detect-
ed for 10 seconds.
Recoverability
System recovers (power is re-supplied to electronic control unit) if signal becomes
normal when starter switch is turned OFF (2 minutes or more) → ON.
Control effected by electronic control unit Engine is stopped 50 seconds after the diagnosis code is generated.
Inspection
Service data 0C: Difference Common Rail Pressure
Actuator test B9: Fuel Leak Check
Electronic control unit connector : MPROP2 (rail pressure control valve)
Electrical equipment #574: MPROP2 (rail pressure control valve)
Electric circuit diagram MPROP2 (rail pressure control valve) system
Generation condition
No signal from engine speed sensor and cylinder recognition sensor while starter
switch (S signal) is input for 10.2 seconds.
Recoverability
System recovers when signals are input from engine speed sensor or cylinder
recognition sensor.
Control effected by electronic control unit No specific control is effected.
Inspection
Service data 01: Engine Revolution
Electronic control unit connector : Engine speed sensor, : Cylinder recognition sensor
Electrical equipment #263: Engine speed sensor, #320: Cylinder recognition sensor
Electric circuit diagram Engine speed sensor and cylinder recognition sensor systems
Generation condition
Current flowing to Powertard solenoid valve remains above the specified value
for 1 second.
Recoverability
System recovers when the current flowing to Powertard solenoid valve remains
below the specified value for 1 second.
Control effected by electronic control unit
• Operation of auxiliary brake is stopped.
• Auto cruise control is stopped.
Inspection
Service data 80: Powertard M/V
Actuator test AC: Powertard M/V
Electronic control unit connector : Powertard solenoid valve
Electrical equipment #571: Powertard solenoid valve
Electric circuit diagram Powertard solenoid valve system
Generation condition
Powertard solenoid valve circuit shorted to ground or open-circuited (driving ter-
minal is at low level when turned OFF) as detected for 1 second.
Recoverability
System recovers when Powertard solenoid valve circuit remains normal (driving
terminal is at high level when turned OFF) for 1 second.
Control effected by electronic control unit
• Operation of auxiliary brake is stopped.
• Auto cruise control is stopped.
Inspection
Service data 80: Powertard M/V
Actuator test AC: Powertard M/V
Electronic control unit connector : Powertard solenoid valve
Electrical equipment #571: Powertard solenoid valve
Electric circuit diagram Powertard solenoid valve system
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