Komatsu SAA6D114E-3 - Code [432;CA432] Idle Validation Process Error

SEN00460-01 40 Troubleshooting
14 114E-3 Series
E-34 Code [432/CA432] Idle Validation Process Error 1
Error code Failure code
Trouble Abnormality in processing of idle validation processing
432 CA432
Contents of
trouble
• Abnormality occurred in processing of idle validation switch circuit.
Action of
controller
• Sets throttle angle to certain value and continues operation (depending on each model).
Problem that
appears
on machine
• Engine speed may not rise from low idle.
Related infor-
mation
• Method of reproducing failure code: Starting switch ON, accelerator ON.
Possible
causes and
standard value
in normal state
Causes Standard value in normal state/Remarks on troubleshooting
1 Defective accelerator pedal
a Prepare with starting switch OFF, then carry out troubleshooting
without turning starting switch ON.
WAS1 (Male) Accelerator pedal Resistance
Between (2) – (1)
Release 1.5 – 3.0 kz
Press 0.25 – 1.5 kz
2
Disconnection in wiring har-
ness (Disconnection in wiring
or defective contact in con-
nector)
a Prepare with starting switch OFF, then carry out troubleshooting
without turning starting switch ON.
Wiring harness between J2 (female) (22) –
WAS1 (female) (1)
Resis-
tance
Max. 10 z
Wiring harness between J2 (female) (9) –
WAS1 (female) (2)
Resis-
tance
Max. 10 z
3
Short circuit in wiring har-
ness (With another wiring
harness)
a Prepare with starting switch OFF, then carry out troubleshooting
without turning starting switch ON.
Wiring harness among all pins between J2
(female) (22) – J2 (female) (With also WAS1
disconnected)
Resis-
tance
Min.
100 kz
Wiring harness among all pins between J2
(female) (9) – J2 (female) (With also WAS1
disconnected)
Resis-
tance
Min.
100 kz
4
Defective wiring harness
connector
Connecting parts among accelerator pedal, 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
5 Defective engine controller
a Prepare with starting switch OFF, then carry out troubleshooting
without turning starting switch ON.
J2 (Female) Accelerator pedal Resistance
Between (22) – (9)
Release 1.5 – 3.0 kz
Press 0.25 – 1.5 kz