Komatsu 830E-AC Shop Manual page 350

Check Digital Inputs To The Interface Module
1. Hydraulic Tank Level (IM2-K) - short wire 34LL
to ground at TB35-N momentarily and confirm
state change (one to zero).
2. No Propel / Retard - (IM2-N) short wire 75-6P to
ground at TB26-C momentarily and confirm
state change (one to zero).
3. Reduced Retard - (IM2-R) short wire 76LR to
ground at TB28-D momentarily and confirm
state change (one to zero).
D13-6
FIGURE 13-4. Interface Module Real Time Data Monitor
VHMS CHECK-OUT & TROUBLESHOOTING
4. Propel System Temp Caution - (IM3-A) short
wire 34TW to ground at TB26-B momentarily
and confirm state change (one to zero).
5. Lamp Test (IM2-R) - actuate lamp test switch
and confirm state change (zero to one).
6. Low Steering Precharge (IM2-W) - short wire
33KL to ground at TB44-P momentarily and
confirm state change (one to zero).
D13004