Advance acoustic Exterra 56507000, Quick Start Troubleshooting Manual

Page: 49 / 89

FORM NO. 56043110 - Exterra
™
- 49
HOPPER SYSTEM
TROUBLESHOOTING GUIDE
Troubleshooting Guide
Symptom
Hopper dump door will not open
Part A: Electrical Control Circuit
Note: Do all testing with the engine running at high speed and the hopper dump door open
switch pressed and held.
Hopper dump door will not
open
1. Press & hold hopper
open dump door
Switch
2. Back probe the S1
dump door solenoid
coil wires (+Vio &
Blu/Wht) should read
12V’s
Check S1 coil wiring
continuity, repair if faulty
Is there 12V’s at the S1 coil?
Check S1 coil resistance
Spec. 9 Ohms
See hydraulic hopper raise
troubleshooting section B
Replace the S1
solenoid coil.
Press & hold hopper door open
SW. Check for continuity @ the
ribbon connector (*) for pins J3-1
& J3-5 on the A2 control box.
Replace the A2
control box assy.
Ribbon pins test
open replace the
touch pad switch
panel
Yes
No
No
No
Yes
Yes
No
Yes
* Ribbon connector see Electrical System Figure 1 for detail pin call-outs.