Komatsu PC88MR-10 Shop Manual page 349

Equipment name
Swing left pressure
sensor
Machine monitor
Equipment name
Defective power
generation of alternator
(when system is normal)
Preheating
Fuel level sensor
PC88MR-10
Procedure, measuring location, criteria and remarks
1. Turn starting switch to OFF position.
2. Insert T-adapter into connector P11.
3. Turn starting switch to ON position.
Voltage Between P11 (2) and (1)
(PC88MR-Q170-033-K-00-A)
Procedure, measuring location, criteria and remarks
1. Turn starting switch to OFF position.
2. Insert T-adapter into connector E12.
3. Start engine.
Voltage Between E12 (1) and ground
1. Turn starting switch to OFF position.
2. Insert T-adapter into connector CM01.
3. Disconnect heater relay terminal R16A.
a To prevent current from flowing through heater when starting switch is
turned to HEAT position
4. Turn starting switch to HEAT position.
Voltage Between CM01 (12) and (3)
1. Turn starting switch to OFF position.
2. Disconnect connector P21 and connect T-adapter to male side.
Between P21 (male) (1) and
ground
Resistance
a Fuel level sensor
characteristics
20 Standard value tables
Standard value table for electrical system
Sensor output
Engine speed:
Medium or
above
FULL
EMPTY
0.5 to 4.5 V
27.5 to 29.5 V
20 to 30 V
Approx. 10 z
Approx. 85 to
95 z
20-25