14 Green Led On Load Sense/Dual Load Zone Module Is Not On; 15 Load Sense Indicates Overload Or Overload Warning With Platform Empty Or Below Weight - Skyjack SJ85 AJ Service Manual

Electrical System

4.2-14 Green LED on Load Sense/Dual Load Zone Module is not On

1. Loose or broken wires #9 and #02 at base
terminal block to load sense/dual load zone
module white connector J4 pins #8 and #1.
4.2-15 Load Sense Indicates Overload or Overload Warning with Platform Empty or
Below Weight
1. Load sense module mis-calibration.
2. Load cell circuit not operating.
Put volt meter across the two 161
blocks to measure voltage across
the 1 ohm resistor.
Empty platform = 8 mV (0.008 V)
250 lbs (113 kg) = 12mV (0.012 V)
500 lbs (227 kg) = 16 mV (0.016 V)
748 lbs (339 kg) = 20 mV (0.02 V)
SJ85 AJ
Section 4 – Troubleshooting Information
Check for loose or corroded connections. Check
for voltage (12V).
Refer to calibration procedure for recalibration of
load cell.
Check Voltage across 1Ω (ohm) resistors 161 and
162 in base control console.
Voltage across 162 resistor should
match voltage across 161.
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