Двигатели Scania четвёртой серии. Руководство — часть 162

86

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03:04-06

Fault code D404

Fault

The fuel volume solenoid valve on the rear
bank, cylinder 4-6 is faulty.

Cause

Monitoring pin 4 and 5 on connector A1
indicates that the voltage is too low to control
the solenoid valve.

Remarks

As a result, the engine will probably run
unevenly.

The engine torque is limited by approximately
30%.

Action

If fault code 3201 is also present, low battery
voltage is active, rectify the battery fault first.

Check the wiring and clean connector A1, B2
and the connector to the solenoid valve.

Clear the fault code memory. Start the engine
and accelerate the engine to full speed.

If the fault remains, first renew the fuel volume
solenoid valve and if necessary the control unit.

Fault codes

03:04-06

ã

87

Fault code D500

Fault

The injection timing solenoid valve on the front
bank, cylinder 1-3 is faulty.

Cause

Shorted to +24 V alternatively between pin 6
and 7 on connector B2.

Remarks

As a result, the engine runs very unevenly and
the whole front bank (cylinder 1-3) will
probably be shut off.

Action

Check the wiring and clean the connectors.

Clear the fault code memory. Start the engine
and accelerate the engine to full speed.

If the fault remains, renew the injection timing
solenoid valve.

Fault code D501

Fault

The injection timing solenoid valve on the front
bank, cylinder 1-3 is faulty.

Cause

Pin 6 and 7 on connector B2 shorted to earth.

Remarks

As a result, the engine runs very unevenly and
the whole front bank (cylinder 1-3) will
probably be shut off.

Action

Check the wiring and clean the connectors.

Clear the fault code memory. Start the engine
and accelerate the engine to full speed.

If the fault remains, renew the injection timing
solenoid valve.

Fault codes

88

ã

03:04-06

Fault code D502

Fault

The injection timing solenoid valve on the front
bank, cylinder 1-3 is faulty.

Cause

Open circuit to pin 6 and 7 on connector B2.

Remarks

As a result, the engine only runs on three
cylinders.

Action

Check the wiring and clean the connectors.

Clear the fault code memory. Start the engine
and accelerate the engine to full speed.

If the fault remains, renew the injection timing
solenoid valve.

Fault code D503

Fault

The injection timing solenoid valve on the front
bank, cylinder 1-3 is faulty.

Cause

Monitoring pin 6 and 7 on connector B2
indicates implausible values compared to other
solenoid valves.

Remarks

As a result, the engine runs very unevenly and
the whole front bank (cylinder 1-3) will
probably be shut off.

Action

Check the wiring and clean connector A1, B2
and the connector to the solenoid valve.

Clear the fault code memory. Start the engine
and accelerate the engine to full speed.

If the fault remains, first renew the control unit
and if necessary the injection timing solenoid
valve.

Fault codes

03:04-06

ã

89

Fault code D504

Fault

The injection timing solenoid valve on the front
bank, cylinder 1-3 is faulty.

Cause

Monitoring pin 6 and 7 on connector B2
indicates that the voltage is too low to control
the solenoid valve.

Remarks

As a result, the engine will probably run
unevenly.

The engine torque is limited by approximately
30%.

Action

If fault code 3201 is also present, low battery
voltage is active, rectify the battery fault first.

Check the wiring and clean connector A1, B2
and the connector to the solenoid valve.

Clear the fault code memory. Start the engine
and accelerate the engine to full speed.

If the fault remains, first renew the injection
timing solenoid valve and if necessary the
control unit.

Fault codes