Failure Code [Ca132] Throttle Sensor Low Error - Komatsu PC200-8M0 Shop Manual

SEN06133-00

Failure code [CA132] Throttle Sensor Low Error

Action
Failure code
level
L03 CA132
q
Detail of failure Low voltage appears in fuel control dial circuit.
q
Uses throttle value obtained before failure detection to run engine if failure is detected with starting
Action of con-
switch at ON position.
troller
q
Uses full throttle value to run engine if starting switch is set to ON position after failure detection.
Problem on
q
Engine speed cannot be controlled by using fuel control dial.
machine
q
Signal voltage from fuel control dial can be checked with monitoring function.
Related infor-
(Code: 03000 Fuel control dial votage)
mation
q
Method of reproducing failure code: Turn starting switch to ON position.
Cause
Defective wiring harness connec-
1
tor
Defective throttle sensor power
2
supply system
Defective fuel control dial (throttle
3
sensor)
Open or short circuit in wiring har-
4
ness
Open circuit in wiring harness
5 (wire breakage or defective con-
tact of connector)
6 Short circuit in wiring harness
Ground fault of wiring harness
7
(contact with ground circuit)
26
40-301
Throttle Sensor Low Error
Failure
(Engine controller system)
Procedure, measuring location, criteria and remarks
See descriptions of wiring harness and connectors in "c: Electrical equip-
ment"of "Checks before troubleshooting" in "General information on trouble-
shooting", and check them.
If failure code [CA2186] is also displayed, perform troubleshooting for it first.
1. Turn starting switch to OFF position.
2. Disconnect connector P20 and connect T-adapters to male side.
Between P20 (male) (1) and (3)
Between P20 (male) (2) and (3)
Between P20 (male) (1) and (2)
1. Turn starting switch to OFF position.
2. Disconnect connector CE02, and connect T-adapters to female side.
Between CE02 (famale) (22) and (23)
Between CE02 (famale) (9) and (23)
a If no failure is found in checks on cause 4, this check is not required.
1. Turn starting switch to OFF position.
2. Disconnect connectors CE02 and P20, and connect T-adapters to each
female side .
Between CE02 (female) (22) and P20
(female) (1)
Between CE02 (female) (9) and P20 (female)
(2)
Between CE02 (female) (23) and P20
(female) (3)
a If no failure is found in checks on cause 4, this check is not required.
1. Turn starting switch to OFF position.
2. Disconnect connectors CE02 and P20, and connect T-adapters to either
female side.
Between CE02 (female) (9) and (23), or
between P20 (female) (2) and (3)
1. Turn starting switch to OFF position.
2. Disconnect connectors CE02 and P20, and connect T-adapters to either
female side.
Between CE02 (female) (9) or P20 (female)
(2) and ground
301 Troubleshooting by failure code, Part 1

Failure code [CA132] Throttle Sensor Low Error

Resistance
Resistance
Resistance
Resistance
Resistance
Resistance
Resistance
Resistance
Resistance
Resistance
PC200, 200LC, 220, 220LC-8M0
4.0 to 6.0 kz
0.25 to 5.0 kz
0.25 to 5.0 kz
4.0 to 6.0 kz
0.25 to 5.0 kz
Max. 1 z
Max. 1 z
Max. 1 z
Min. 1 Mz
Min. 1 Mz