Komatsu 830E-AC Shop Manual page 352

12. Park Brake Request (IM3-V) - Place shifter into
park position and confirm state change (zero to
one).
13. Secondary Engine Shutdown Switch (IM3-E) -
actuate secondary engine shutdown switch and
confirm state change (one to zero).
14. Auto Lube Switch (IM3-Y) - short wire 68LLP1
to ground at TB24-T momentarily and confirm
state change (one to zero).
15. Reset Request Switch (IM3-C) - Actuate Body
Up Override switch and confirm state change
(zero to one).
16. GE Batt + (IM3-M) -- confirm this is a one.
17. Starter Motor 1 Energized (IM3-R) - Disconnect
wire 11SM1 from cranking motor to TB29-K at
TB29-K. Momentarily short TB29-K to 24V and
confirm state change (zero to one). Reconnect
disconnected wire.
18. Starter Motor 2 Energized (IM3-S) - Disconnect
wire 11SM2 from cranking motor to TB29-G at
TB29-G. Momentarily short TB29-G to 24V and
confirm state change (zero to one). Reconnect
disconnected wire.
19. Crank Sense (IM3-U) -Open the start battery
disconnect switch so that there is no battery
voltage to the starters. Momentarily short TB32-
M to 24V and confirm state change (zero to
one). After removing 24V short from TB32-M,
close the start battery disconnect switch.
D13-8 VHMS CHECK-OUT & TROUBLESHOOTING
Check Analog Inputs To The Interface Module
NOTE: Instead of using a resister in place of a
sensor for verifying pressure readings, a calibrated
pressure gauge can be installed in the hydraulic
circuit to compare system pressures with the
pressures displayed in the Interface Module Real
Time Data Monitor program.
Verify that the used analog inputs are in the range of
the values listed below.
1. Truck Speed [kph] (IM1-gh): Use GE DID to
simulate vehicle speed and confirm reported
speed matches vehicle speed set using GE DID
+/- 2 kph.
2. Steering Pressure [kPa] (IM3-d): Disconnect
steering pressure sensor and confirm fault
A204, Steering Pressure Sensor Low, is active.
Reconnect sensor.
3. Ambient Air Temp [C] (IM3-e): confirm reported
temperature matches ambient temperature
within 3 C.
4. Fuel Level [%] (IM3-g): confirm reported % level
matches actual fuel level in tank +/- 5%.
5. Battery Voltage A [V] (IM3-h): confirm reported
voltage is +/- 1 volt of actual measured 12 volt
battery voltage.
6. Brake Pressure [kPa] (IM3-p): Disconnect ser-
vice brake pressure sensor located in brake
cabinet (reference circuit 33SP) and confirm
fault A205, Brake Pressure Sensor Low, is
active. Reconnect sensor.
7. Hydraulic Tank Temp [C] (IM3-m): Disconnect
tank temp sensor and confirm fault A103,
Hydraulic Oil Temp - Tank Sensor Low, is
active. Reconnect sensor.
8. Hoist Pressure 2 [kPa] (IM3-q): Short wire
33HP2 to ground at TB41-J momentarily and
confirm fault A203, Hoist Pressure 2 Sensor
Low, is active.
9. Hoist Pressure 1 [kPa] (IM3-s): Short wire
33HP1 to ground at TB41-A momentarily and
confirm fault A202, Hoist Pressure 1 Sensor
Low, is active.
10. Battery Voltage 24V [V]
reported voltage is +/- 1 volt of actual measured
battery voltage.
(IMint): confirm
D13004