Sakai SV540 Series, Shop Manual

Page: 253 / 306

9-045
TROUBLESHOOTING
2-5-2. Machine speed cannot be changed 3/5
Engine check lamp must not be lighting. If engine check lamp lights, refer to “Service information” of engine
manufacturer.
Check whether ECO controller red LED shows any blink.
2) when red LED shows any blink.
Reference Fig.: 2-5-1
Number of
red LED blinks
Check point Check/Cause Action
1 long,
1 short
or
1 long,
2 short
1. Connector Check motor proportional solenoid (rear) connector and
T/C controller (terminal C2-P4) for corrosion, breakage,
bending and looseness.
If any abnormality is found, connector is faulty.
•
•
Replace connector or
terminal.
2. Harness Measure resistances between motor proportional solenoid
(rear) terminal wire Bw and T/C controller terminal C2-P4
wire BW.
Standard resistance : 10 Ω or less
If resistance is abnormal, harness is faulty.
•
•
Repair or replace
harness.
1 long,
3 short
or
1 long,
4 short
1. Connector Check motor speed change solenoid (front) connector and
T/C controller (terminal C2-P3) for corrosion, breakage,
bending and looseness.
If any abnormality is found, connector is faulty.
•
•
Replace connector or
terminal.
2. Harness Measure resistances between motor speed change
solenoid (front) terminal wire BL and T/C controller
terminal C2-P3 wire BL.
Standard resistance : 10 Ω or less
If resistance is abnormal, harness is faulty.
•
•
Repair or replace
harness.
•
•