SPIDER AND BEARING AS 2Y7153 - Caterpillar

Table 2
Voltage Specifications For Connector 2    
No.     Item     Voltage In Normal Condition     Measurement Point    
2     Pump deliver pressure senor     0.7 to 9 volts
(Voltage changes in proportion to pump delivery pressure)
Standard
All control levers in NEUTRAL: 0.7 to 2.5 volts
When relieved: 7 to 9 volts     GND    
3     Proportional reducing valve +     1.0 to 11 volts
Standard
All control levers in NEUTRAL: 6 to 9 volts
Lever is operated: voltage goes down     GND    
4     Proportional reducing valve -     Approx. 0 volts     GND    
6     Attachment pressure switch     Attachment pedal operated: approx. 0 volts
Attachment pedal in NEUTRAL: 14 to 17 volts     GND    
7     Implement pressure switch     Implement control levers or swing control lever operated: approx. 0 volts
Implement control levers or swing control lever in NEUTRAL: 14 to 17 volts     GND    
8     Boom RAISE pressure switch     Boom control lever shifted to RAISE side 70 percent of stroke or more: approx. 0 volts
Other than above: 14 to 17 volts     GND    
9     Governor actuator feedback     0.7 to 9 volts
Voltage changes in proportion to engine speed dial
Engine speed dial = 1: low voltage, 10: high voltage     GND    
10     Governor actuator drive command A     Backup switch = AUTO (normal control)
Engine speed dial operated from 1 to 10
10 to 26 volts (instantly) 311B, 312B, 315B, 5 to 28 volts
Engine speed dial operated 10 to 1
1 volt or less (instantly) 311B, 312B, 315B, 5 to 20 volts
When not operated: approx. 0 volts     GND    
12     Trenching solenoid     Boom priority mode: approx. 0 volts
Swing priority mode: 18 to 32 volts     GND    
13     Engine coolant temperature    
0 °C (32 °F)Sensor resistance: approx. 23.14 kilo-ohms
Voltage: approx. 9.7 volts
25 °C (77 °F)
Sensor resistance: approx. 6.82 kilo-ohms
Voltage: approx. 7.1 volts
50 °C (122 °F)
Sensor resistance: approx. 2.47 kilo-ohms
Voltage: approx. 4.2 volts
75 °C (167 °F)
Sensor resistance: approx. 1.08 Kilo-ohms
Voltage: approx. 2.3 volts     GND    
15     Engine coolant level switch     Engine coolant level is above the specified level (ON): approx. 0 volts
Engine coolant level is below the specified level (OFF): 14 to 17 volts     GND    
18     Travel pressure switch     Travel control lever operated: approx. 0 volts
Travel control lever in NEUTRAL: 14 to 17 volts     GND    
20     Governor actuator drive command B     Backup switch = AUTO (normal control)
Engine speed dial operated from 1 to 10
1 volt or less (instantly)
Engine speed dial operated from 10 to 1
10 to 26 volts (instantly)
When not operated: approx. 0 volts     GND    
21     Fine finish solenoid     Boom control lever shifted to RAISE side 70 percent of stroke or more: 18 to 32 volts
Other than above: approx. 0 volts     GND    
22     Automatic travel speed change solenoid     Travel mode = RABBIT
Travel control lever = operate, and pump delivery pressure service code 91 setting value: 18 to