1934745 SENSOR GP-SPEED Caterpillar parts
35, 45, 55
Rating:
Alternative (cross code) number:
CA1934745
193-4745
1934745
CA1934745
193-4745
1934745
Weight: 0.21 pounds 0 kg.
CHALLENGER,
Number on catalog scheme:
4
For full view, you need register
Information:
Table 1
Diagnostic Codes for Cooling Fan Control
J1939 Code CDL Code Code Description
(code descriptions may vary) Comments
- 1076-5 Engine Cooling Fan Bypass Solenoid : Current Below Normal The Electronic Control Module (ECM) detects an open circuit in the circuit for the engine cooling fan bypass solenoid.
The ECM sends minimum current to the fan control solenoid. The code is logged.
- 1076-6 Engine Cooling Fan Bypass Solenoid : Current Above Normal The ECM detects a short circuit to ground in the circuit for the engine cooling fan bypass solenoid.
The ECM sends minimum current to the fan bypass solenoid. The code is logged. The ECM monitors engine coolant temperature, intake manifold air temperature, and hydraulic oil temperature. The ECM monitors the sensors in order to determine the correct speed for the engine cooling fan.The cooling fan bypass solenoid prevents operation of the fan when the engine is cold. During the following procedure, refer to the electrical schematic for the application.Complete the procedure in the order in which the steps are listed.
Table 2
Troubleshooting Test Steps Values Results
1. Check for Active Diagnostic Codes
A. Remove the electrical power from the ECM.
B. Verify that the solenoid connector is free of debris and connected securely.
C. Connect the electronic service tool to the diagnostic connector.
D. Restore the electrical power to the ECM.
E. Select diagnostic tests on the electronic service tool.
F. Select the "Override Parameters" screen.
G. Activate the fan override.
H. Monitor the active diagnostic code screen on the electronic service tool. Check and record any active diagnostic codes. Wait at least 30 seconds in order for the diagnostic code to become active.
I. Disable the fan override.
Active Diagnostic Codes
Result: No diagnostic codes are active.
The problem may have been related to a faulty connection in the harness. Carefully inspect the connectors and wiring. Refer to Troubleshooting, "Electrical Connectors - Inspect".
Result: A 1076-6 code is active at this time.
Proceed to Test Step 2.
Result: A 1076-5 code is active at this time.
Proceed to Test Step 3.
2. Disconnect the Connector for the Engine Fan Bypass Solenoid in Order to Create an Open Circuit
Note: The following procedure must be done on a cold engine.
A. Remove the electrical power from the ECM.
B. Disconnect the connector for the engine fan bypass solenoid.
C. Restore the electrical power to the ECM.
D. Activate the fan override.
E. Monitor the active diagnostic code screen on the electronic service tool. Check and record any active diagnostic codes. Wait at least 30 seconds in order for the diagnostic code to become active.
F. Disable the fan override.
Short circuit
Result: A 1076-6 code remains active. There is a short circuit between the harness connector for the engine fan bypass solenoid and the ECM.
Repair: Repair the connectors or wiring and/or replace the connectors or wiring. Reset all active codes and clear all logged codes. Verify that the fault is resolved.
Result: A 1076-6 code was active before disconnecting the connector. A 1076-5 code became active after disconnecting the connector.
Repair: Replace the engine fan bypass solenoid. Reset all active codes and clear all logged codes. Verify that the fault is
Caterpillar parts catalog:
Parts sensor Caterpillar catalog:
1315575
SENSOR GP-GROUND SPEED
35, 45, 55, 65C, 65E, 75C, 75D, 75E, 85C, 85D, 85E, 95E
35, 45, 55, 65C, 65E, 75C, 75D, 75E, 85C, 85D, 85E, 95E
35, 45, 55
35, 45, 55
1138869
SENSOR-LIQUID TEMPERATURE
35, 45, 55
35, 45, 55
1138872
SENSOR GP-SPEED
45, 55
45, 55
1138820
SENSOR-TEMPERATURE
45, 55
45, 55
1470716
SENSOR
45, 55
45, 55
1138819
SENSOR-TEMPERATURE
45, 55
45, 55
1550000
SENSOR-AIR TEMPERATURE
35, 45, 55
35, 45, 55
1550001
SENSOR-OIL PRESSURE
35, 45, 55
35, 45, 55
1550002
SENSOR AS-COOLANT LEVEL
35, 45, 55
35, 45, 55
35, 45, 55
3176B, 3176C, 3196, 3406E, 3408E, 3412E, 3456, 345B, 345B II, 345B II MH, 345B L, 365B, 365B II, 365B L, 572R II, 65E, 75E, 95E, C-10, C-12, D7R II, R1600G, W345B II
35, 45, 55
1550002
SENSOR AS-COOLANT LEVEL
35, 45, 55
35, 45, 55
1550001
SENSOR-OIL PRESSURE
35, 45, 55
35, 45, 55
1550000
SENSOR-AIR TEMPERATURE
35, 45, 55
35, 45, 55
65C, 65E, 75D, 75E, 85D, 85E, 95E
3406E, 735, 740, 824C, 824G, 824G II, 825G II, 826G II, 834G, 836G, 980G, 980G II, 988G, AD30, AD55, C-15, C-16, C18, G3606B, G3608, G3612, G3616, MTC835, R2900G
3406E, 735, 740, 824C, 824G, 824G II, 825G II, 826G II, 834G, 836G, 980G, 980G II, 988G, AD30, C-15, C-16, C18, MTC835, R2900G
120H, 120K, 120K 2, 120M, 120M 2, 12H, 12K, 12M, 12M 2, 12M 3, 12M 3 AWD, 135H, 140G, 140H, 140K, 140K 2, 140M, 140M 2, 140M 3, 140M 3 AWD, 143H, 14H, 14M, 160H, 160K, 160M, 160M 2, 160M 3, 160M 3 AWD...
120K, 12H, 12K, 140G, 140K, 140K 2, 140M, 160K, 160M, 2290, 2390, 2391, 2491, 2590, 324D, 324D FM, 324D FM LL, 324D L, 324D LN, 325D, 325D FM, 325D FM LL, 325D L, 325D MH, 328D LCR, 329D, 329D L, 329D...
1090, 1190, 1190T, 120K, 1290T, 12H, 12K, 140G, 140H, 140K, 140K 2, 140M, 143H, 14H, 160H, 160K, 160M, 163H, 16H, 2290, 2390, 2391, 2491, 2590, 3126B, 3126E, 324D, 324D FM, 324D FM LL, 324D L, 324D LN...
120K, 12H, 12K, 140G, 140H, 140K, 140K 2, 140M, 143H, 14H, 160H, 160K, 160M, 163H, 16H, 2290, 2390, 2391, 2491, 2590, 3126B, 3126E, 324D, 324D FM, 324D FM LL, 324D L, 324D LN, 325D, 325D FM, 325D FM L...