ALM-BR4-4.3 Manual
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Copyrights ECOTRONS LLC www.ecotrons.com
DTC Table
Below is the Diagnostic Trouble Code table. ALM-Board has on-board-diagnostics
capability to detect most of the common errors. The first thing user should do when
ALM-Board is not working properly is to read DTCs.
Trouble Code
Description
Solutions
E1
Internal communication error
Contact the manufacturer
E2
Internal register error
Contact the manufacturer
E3
LSU yellow wire (VM) short to power 1. Check the harness for short-to-power
2. Change the LSU
E4
LSU yellow wire (VM) short to GND
1.
Check the harness for short-to-ground
2.
Change the LSU
E5
LSU black wire (UN) short to power
1. Check the harness for short-to-power
2. Change the LSU
E6
LSU black wire (UN) short to GND
1. Check the harness for short-to-ground
2. Change the LSU
E7
LSU green wire (IA) short to power
1. Check the harness for short-to-power
2. Change the LSU
E8
LSU green wire (IA) short to GND
1. Check the harness for short-to-ground
2. Change the LSU
E9
Operating voltage too low
Check the power supply
E10
Heater circuit damaged
Check the LSU connector
E11
Heater circuit short to power
Contact the manufacturer
E12
Heater circuit short to GND
1. Check the harness for short-to-ground
2. Change LSU
3. Contact the manufacturer
