21259868 Bracket Volvo.Penta
D3-110I-D; D3-110I-E; D3-110I-F, D3-110I-G; D3-140A-G; D3-140I-G
Bracket
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Volvo Penta entire parts catalog list:
- Heat Exchanger with Installation Parts » 21259868
Information:
Table 1
Diagnostic Codes Table
CDL Code J1939 Code Code Description
(code descriptions may vary) Comments
291-5 4212-5 Engine Cooling Fan Solenoid : Current Below Normal The Electronic Control Module (ECM) detects an open circuit in the circuit for the engine fan control solenoid.
The ECM sends minimum current to the fan control solenoid. The code is logged.
291-6 4212-6 Engine Cooling Fan Solenoid : Current Above Normal The ECM detects a short circuit to ground in the circuit for the engine fan control solenoid.
The ECM sends minimum current to the fan control solenoid. The code is logged. The Electronic Control Module (ECM) controls the speed of the engine cooling fan in order to provide the following benefits:
Increased productivity
Reduced noise
Improved fuel economy
Reduced overcooling of the engineThe ECM monitors engine coolant temperature, intake manifold air temperature, and hydraulic oil temperature in order to determine the correct speed for the engine cooling fan.The ECM controls the speed of the fan by controlling the current to the engine fan control solenoid. As the current to the control solenoid is changed, the angle of the fan pump's swashplate changes proportionally. This changes the output of hydraulic oil from the fan pump to the cooling fan.If the ECM detects a system fault, the ECM provides minimum current to the solenoid. This ensures a maximum fan speed while the fault condition exists.An override is available with the Caterpillar Electronic Technician (ET). This allows the fan to be manually changed from the minimum to the maximum possible rpm.
Illustration 1 g01194820
Schematic for the engine fan control solenoid
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 Cat ET to the service tool connector.
D. Restore the electrical power to the ECM.
E. Monitor the active diagnostic code screen on Cat ET. Check and record any active diagnostic codes.
Wait at least 30 seconds in order for the diagnostic code to become active.
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 short circuit diagnostic code (-6) is active at this time.
Proceed to Test Step 2.
Result: An open circuit diagnostic code (-5) is active at this time.
Proceed to Test Step 3.
2. Disconnect the Connector for the Engine Fan Control Solenoid in Order to Create an Open Circuit
A. Remove the electrical power from the ECM.
B. Disconnect the connector for the engine fan control solenoid.
C. Restore the electrical power to the ECM.
D. Monitor the active diagnostic code screen on Cat ET. Check and record any active diagnostic codes.
Wait at least 30 seconds in order for the diagnostic code to become active.
Short circuit
Result: A short circuit diagnostic code (-6) remains active. There is a short circuit between the harness connector for the engine fan control solenoid and the ECM.
Repair the connectors or wiring and/or replace the connectors or wiring. Reset all active codes and clear all logged codes. Verify that the problem is resolved.
Result: A short circuit diagnostic code (-6) was active before disconnecting the connector. An open circuit diagnostic code (-5) became active after disconnecting the connector.
Replace the engine fan control solenoid. Reset all active codes and clear all logged codes. Verify that the problem is resolved.
3. Create a Short at the Connector for the Engine Fan Control Solenoid
A. Remove the electrical power from the ECM.
B. Fabricate a jumper wire that is long enough to create a short between the terminals of the connector for the engine fan control solenoid. Crimp connector pins to each end of the jumper wire.
C. Install the jumper wire between terminal 1 (engine fan control solenoid) and terminal 2 (solenoid return) on the harness side of the connector.
D. Restore the electrical power to the ECM.
E. Monitor the active diagnostic code screen on Cat ET. Check and record any active diagnostic codes.
Wait at least 30 seconds in order for the diagnostic code to become active.
Open circuit
Result: The open circuit diagnostic code (-5) remains active with the jumper in place.
Repair the connectors or wiring and/or replace the connectors or wiring. Reset all active codes and clear all logged codes. Verify that the problem is resolved.
Result: A short circuit diagnostic code (-6) is active when the jumper wire is installed. An open circuit diagnostic code (5) is active when the jumper wire is removed.
Replace the engine fan control solenoid. Reset all active codes and clear all logged codes. Verify that the problem is resolved.
Complete the procedure in the order in which the steps are listed.If the procedure corrected the issue, return the engine to service.If the procedure did not correct the issue, Contact your Cat dealer Technical Communicator (TC). For further assistance, your TC can confer with the Dealer Solutions Network (DSN).
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21184378
21184378 Bracket
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21225475
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