Aux Error Code Check; Figure 3-4. Status/Warning Lights; Trucks Without Prelube System; Trucks With Prelube System - Komatsu 930E-2 Shop Manual

b. Turn key switch to START position.

Trucks without prelube system:

Measure 24V DC to ground on Circuit 21A
(TB25) and also 21B (TB31) to ground.

Trucks with prelube system:

Measure 24V DC to ground on Circuit 21A
@ TB25 and also 21PT @ TB28 to ground,
after the prelube system has reached
proper oil pressure. (Note: Engine oil level
must be correct.)
Verify digital input ENGSTRTREQ and digi-
tal outputs ENGCRANK, ENGCRNKX, and
BATSEPC are highlighted when 21A (&
21PT) and 21B are 24V DC.
6. Return key switch to ON position.
7. Move selector switch to FORWARD.
8. Turn key switch to START.
Circuit 21A should remain 0V DC.
9. Release key switch.
10. Place selector switch in NEUTRAL.
11. Place park brake switch in the OFF position.
12. Turn key switch to START position.
Circuit 21A should remain 0VDC.
13. Release the key switch.
14. Apply parking brake.

AUX ERROR CODE Check:

1. With the PTU still on the TCI Real Time Data
screen, check the AUX_ERROR_CODE at the
upper right of the screen:
Value should be blank or (001)
Note: Value will be (-01) if the TCI is not communicat-
ing with the aux inverter.
E03015 3/01 AC Drive System Electrical Checkout Procedure
(Release 17 Software)

FIGURE 3-4. STATUS/WARNING LIGHTS

Row /
Indicator Description
Column
A1* Spare
B1* Low Steering Pressure
C1 Low Accumulator Precharge
D1 Spare
E1 Low Brake Pressure
A2* Low Hydraulic Tank Level
B2* Autolube Low Pressure
C2* Circuit Breaker Tripped
D2* Hydraulic Oil Filter Restricted
E2* Low Fuel
A3* Park Brake Applied
B3* Service Brake Applied
C3* Body Up
D3* Dynamic Retarding Applied
E3 STOP ENGINE
A4* Spare
B4* Manual Back-Up Lights
C4* 5 Min. Shutdown Timer
D4* Retard Speed Control
E4* CHECK ENGINE
A5 No Propel/Retard
B5 Propulsion System Caution
C5 Propulsion Sys. Temp. Caution
D5 High Brake/Hydraulic Oil Temp.
STOP ENGINE (Komatsu engine
E5*
only)
A6 No Propel
B6 Propulsion System at Rest
C6 Propulsion System Not Ready
D6 Propel System at Reduced Level
E6 Retard System at Reduced Level
NOTE: On later model trucks, lamps indicated * can be dimmed
using dimmer control on Overhead Display Panel
Indicator Color
Red
Red
Red
Red
Amber
Amber
Amber
Amber
Amber
Amber
Amber
Amber
Red
Amber
Amber
Amber
Amber
Red
Amber
Amber
Red
Red
Red
Amber
Amber
Amber
Amber
E3-15