20405919 Volvo.Penta Fan, normal climate

Table 1
Tools Needed
Part Number Description Qty
257-9140 Digital Multimeter 1
7X-1710 Multimeter Probe (Signal Reading Probes) 1 Test Step 1. Inspect the Electrical Connectors and the Wiring
Turn the keyswitch to the "OFF" position.
Check the ECM connectors, the customer connector, and wiring for damage or incorrect attachment.
Check for the correct installation of the wires for the Cat Data Link. Refer to Installation Guide, "Wiring The Cat Data Link" for additional information.
Check the following components for abrasion, corrosion, or incorrect attachment.
Engine Monitoring System (EMS)
Harnesses and wiring
Verify that each individual ECM is programmed to the proper engine location.
Verify that the negative battery connections are secure and free from corrosion.
Verify that the belts and all connections for the charging system are secure and tight. Expected Result:All connectors, pins and sockets should be completely coupled and/or inserted and the harness and wiring should be free of corrosion, of abrasion, and of pinch points.Results:
OK - The harnesses and wiring appear to be OK. Proceed to Test Step 2.
Not OK - A problem has been found with a harness and/or wiring.Repair: Perform the following repair:Repair the connectors or wiring and/or replace the connectors or wiring. Ensure that all of the seals are properly in place and ensure that the connectors are completely coupled.Verify that the repair eliminates the problem.STOPTest Step 2. Check the Display for MessagesA problem with the Cat Data Link will affect the EMS in the following manner:The tachometer for the EMS intermittently displays "EE" in the display and the indicator for the tachometer swings back and forth.Note: This module may operate properly at times. The module may then begin to display the symptom in unison with the main module of the EMS.ORThe needles on the quad gauge module swing back and forth.Note: This module may operate properly at times. The module may then begin to display the symptom in unison with the main module of the EMS.Expected Result:The display modules do not exhibit the symptoms that indicate a problem with the Cat Data Link.Results:
OK - The display modules do not exhibit the symptoms that are described above. Proceed to Test Step 3.
Not OK - The display exhibits one or more of the symptoms that are described above.Repair: The problem is not in the ECM or the display modules. Refer to