Faults; Pre-Heater Control System Faults - KAMAZ 5490 Operation Manual

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
Pump 1,2 – XS5
Fuel pump
+ 24 V
- General
13
Heater Pump
1,2-ХР5
1,2- ХS3
-
4,6 –ХР1 -
7-ХР1 1-ХP5
Panel
-
-
1-ХР4
3-ХР4