Program Unit; Description - Electrolux W455 H Service Manual

Troubleshooting
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have been on for 2 seconds; if this is the case, a check is made that the
pulses from the tacho sensor are present when the default value ceases.
The DLCU processor will reset itself when the fault has disappeared.
CPU reads the fault message when the program finishes and generates a
fault code, the fault message is ignored between these two occasions.
Reason:
• The fault can be caused by breaks in the circuits for the tacho sensor, or
caused by a fault in the magnet in the tacho sensor.
• Collateral damage due to a fault in the motor system.
Action:
• If there is no fault in the tacho sensor or the motor system, and the fault
returns after a reset, change the CPU.
Fault code 60, ACTUATOR CIRCUIT
The DLCU processor controls the door lock actuator coil. The DLCU
processor checks continuously that the coil is engaged. DLCU can detect a
break in the circuit (>100kohm) (DLCU cannot detect a short in the circuit).
If there is a break in the actuator circuit, CPU will be notified; the fault
message will disappear if the fault ceases.
CPU reads the fault message when the program starts and finishes and
generates a fault code, the fault message is ignored between these two
occasions.
Reason:
• The fault can be caused by a break in the cables between the hatch lock
and the CPU, or caused by a fault in the hatch lock solenoid.
• Fault or break in the CPU circuits.
Action:
• If the fault returns after a reset, and is not caused by a fault in the hatch
lock or the cables for the hatch lock, change the CPU.
438 9047-81/02