KAMAZ 5490, Operation Manual

Page: 211 / 327

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7. Faults
7.1 Faults that the User can eliminate on his own.
If after being switched on the pre-heater won’t start, it is
necessary to do the following:
1) Check the presence of fuel in the tank;
2) Check the safety device (if the 25 A safety
fuses in the control unit is burnet out or not installed, the
pre-heater doesn’t start and corresponding LED doesn’t
glow).
7.2 All the other faults of the pre-heater are
indicated by panel LED blinking.
7.3 Refer to Section 8 for typical faults of the pre-
heater and trouble-shooting procedures.
7.4 If malfunctions occur during the operation,
which is required the partial disassembly of the heater,
please contact the dealer.
8. Pre-heater control system faults
8.1 Trouble-shooting shall be started with
checking the connector terminals and corresponding
circuits (refer to Table 1 and Electric circuit in Figure 1).
Table 1
Circuit Heater Pump Panel
Pump 1,2 – XS5 1,2-
ХР5
-
Fuel pump 1,2-
ХS3
- -
+ 24 V 4,6 –
ХР1
- 1-
ХР4
- General 7-
ХР1
1-
ХP5
3-
ХР4