SANY LATIN AMERICA
7-65
SY195/205/215/225C9 Crawler Hydraulic Excavator
Troubleshooting
Shop Manual - June 2013
E-1 Engine does not start
Trouble
Engine cannot be started.
Related information
Possible causes and standard value in normal state
Cause
Standard value in normal state/Remarks on troubleshooting
1
Low battery
capacity
●
Turn engine start switch to OFF position. Keep it at OFF position to perform trou-
bleshooting.
Battery voltage
Voltage
≥
24V
2
Internal fail-
ure of start
switch
●
Turn engine start switch to OFF position. Keep it at OFF position to perform trou-
bleshooting.
OFF position: between wire 22# and wire 11#
Resistance
≥
1M
Ω
3
Failure of
pilot switch
●
Turn engine start switch to OFF position. Keep it at OFF position to perform trou-
bleshooting.
Lockout lever FREE position: between 105 # and 27# wire
Resistance
≤
1
Ω
Lockout lever LOCKED position: between wire 105# and 27#
≥
1 M
Ω
4
Failure of
start motor
●
Turn engine start switch to OFF position. Keep the engine running during trouble-
shooting. (When all power supplies, grounding, signal and engine inputs are nor-
mal except engine output, it is the failure of start motor)
Engine start motor
Start switch Voltage
Power supply: Terminal B and ground
Start
20~30V
Between engine input terminal S and ground
20~30V
5
Open circuit
of wire har-
ness
●
Turn engine start switch to OFF position. Then, keep it at OFF position to perform
troubleshooting.
Wire 21# and start motor terminal B
Resistance
≤
1
Ω
Wire 12# and start relay terminal SW
≤
1
Ω
Start relay terminal L and safety relay terminal S
≤
1
Ω
6
Failure of
fuse F1
Battery terminal "+" (wire 20#) and control dial wire 22#
Resistance
≤
1
Ω
7
Short cir-
cuit of wire
harness
(grounded)
●
Turn engine start switch to OFF position. Keep it at OFF position to perform trou-
bleshooting.
Start relay terminal SW and ground
Resistance
≥
1 M
Ω
Engine input terminal S and ground
≥
1 M
Ω
8
Internal
failure of
alternator
●
Turn engine start switch to OFF position. Then, keep it at ON position to perform
troubleshooting.
Alternator terminal P and ground
Voltage
≤
1V
9 Start relay
●
Turn engine start switch to OFF position. Move it to START position when per-
forming troubleshooting.
Terminal SW and ground
Voltage
App. 24V
Terminal S and ground
App. 24V
10
Failure of
parking unit
●
Turn engine start switch to OFF position. Then, keep it at ON position to perform
troubleshooting.
Between CN-801F 2 and 3
Resistance
≤
1
Ω
Unplug connector CN-801F; measure resistance of motor coil.
App 63
Ω
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