Engine Will Not Crank - Engine Models - JLG T350 Troubleshooting Manual

SECTION 1 - TROUBLESHOOTING BY FUNCTION

1.6 ENGINE WILL NOT CRANK - ENGINE MODELS

Engine starting is only allowed for engine powered machines when the engine speed feedback is zero.
Step Pretest Instructions
1.6.1
1.6.2
1.6.3
1.6.4
1.6.5
1.6.6
1.6.7
1.6.8
1-32
Test
Do panel indicator lights blink
at power-on?
Is Analyzer DIAGNOSTICS ->
SYSTEM -> BATTERY at least
9 Volts?
Voltage at X096.6 = Vbatt?
Does engine turn with manual
recoil?
Analyzer DIAGNOSTICS ->
ENGINE -> SPEED = 0 RPM?
While pressing the start button,
Voltage on X089 starter sole-
noid = Vbatt?
While pressing the start button,
Voltage on X022.6 = Vbatt?
While pressing the start button,
Voltage on X002.23 = Vbatt?
T350 T500J
Result
Yes
No
Yes
No
Yes
No
Yes
No
Yes
No
Yes
No
Yes
No
Yes
No
Corrective Action
Go to step 1.6.2
Ground controller not powered. Perform
component check: 3.7 Engine Powered
Machine - Power
Go to step 1.6.3
Possible Causes: 4.1.4
Go to step 1.6.4
Replace engine solenoid fuse at X088
Go to step 1.6.5
Possible Causes: 4.1.76
Go to step 1.6.6
Possible Causes:4.1.82-Remove
X001.16 to verify, 4.1.21, 4.1.30, 4.1.10
Possible Causes: 4.1.77
Go to step 1.6.7
Possible Cause: Broken Wht/Yel 48-6
wire between X022.6 and solenoid
Go to step 1.6.8
Possible Cause: Broken Wht/Yel 48-6
wire between X002.23 and X022.6
Possible Causes: 4.1.2, 4.1.10
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