Code [2185/Ca2185] Throttle Sens. Sup. Volt. High Error - Komatsu 114E-3 Series Shop Manual

SEN00460-01
E-49 Code [2185/CA2185] Throttle Sens. Sup. Volt. High Error
Error code Failure code
2185 CA2185
Contents of
• High voltage (min. 5.25 V) occurred in throttle sensor power supply circuit.
trouble
Action of con-
• Depends on machine model.
troller
Problem that
appears on • Depends on machine model.
machine
Related infor-
• Method of reproducing failure code: Starting switch ON.
mation
Short circuit in wiring har-
1 ness (With another wiring
harness)
Possible causes
and standard
value in normal
state
Defective wiring harness
2
connector
3 Defective engine controller
Circuit diagram related to fuel control dial
42
Trouble Abnormally high level in throttle sensor
Causes
a Troubleshoot with starting switch OFF, then carry out trouble-
shooting without turning starting switch ON.
Wiring harness among all pins between J2
(female) (22) – J2 (female) (With P20 dis-
connected)
Between J2 (female) (22) – J3 (female) (3)
(With P20 disconnected)
Connecting parts among fuel control dial, engine unit wiring har-
ness, and engine controller are suspected. Inspect them directly.
• Loose connector, broken lock, broken seal
• Corrosive, bent, broken, forced-in, or extended pin
• Humidity in connector, entry of dirt or dust, poor insulation
If causes 1 and 2 are not detected, engine controller may be defec-
tive. (Since trouble is in system, troubleshooting cannot be carried
out.)
Standard value in normal state/Remarks on troubleshooting
40 Troubleshooting
1
Resis- Min.
tance 100 kz
Resis- Min.
tance 100 kz
114E-3 Series