921503-5520 Tohatsu SCREW

Table 1
Tools Needed
Part Number Description Qty
257-9140 Digital Multimeter 1
7X-1710 Multimeter Probe 1
Illustration 1 g01760795
Display information for the Engine Vision Interface Module (EVIM).
(1) Cat Data Link Receive Active
(2) Transmit to Engine Vision.
(3) Receive a Signal from Engine Vision. Test Step 1. Inspect the Electrical Connectors and the Wiring
Turn the keyswitch to the "OFF" position.
Check the connections to the Electronic Control Module (ECM). Check the ECM connectors, the customer connector, and the wiring for damage or for 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, for corrosion, or for incorrect attachment.
Engine Vision Interface Module (EVIM)
Engine vision display
WiringEnsure that the 163-3973 Cable As is securely connected to the EVIM.
Check the following components for abrasion, corrosion, or incorrect attachment.
Engine Monitoring System (EMS)
Computerized Monitoring System (CMS)
Wiring
Verify that each individual ECM is programmed to the proper engine location.
Verify that the negative battery connections at the bus bar are secure and free from corrosion. 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 connectors and the harnesses appear to be in good repair. Proceed to Test Step 2.
Not OK - A problem has been found with the harness or with a connector.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 Messages
Turn the keyswitch to the "ON" position.
On powerup, check if the engine vision displays the "ERROR" message.
Attempt to access the following screens on the engine vision display:
"Maintenance" screen
"Diagnostic Code" screenThe engine vision may display "WAITING FOR ECM RESPONSE" when the various screens are being accessed. This is normal operation.Note: The engine ECM must have the proper software version in order to access the maintenance information. Refer to Installation Guide, "Overview of the Engine Vision System" for additional information.Expected Result:The engine vision displays an "ERROR" message and/or all screens can be accessed. Results:
OK - The engine vision displays an "ERROR" message and/or all of the various screens can be displayed.Repair: The engine vision and the engine ECM are working properly. There may be a problem with the data link. Refer to the following section in this manual , "Cat Data Link Circuit - Test" for additional information.STOP
Not OK - An "ERROR" message is not displayed. The engine vision will not allow access to the various menus. Proceed to Test Step 3.Test Step 3. Check the Display Screen of the EVIM for Error Codes
Illustration 2 g00795085
Display screen for the EVIM
Check the display screen on the EVIM for the error code that is shown in Illustration 2.Expected Result:The display screen on the EVIM shows the code that is described in Illustration 2.Results:
OK - The error code matches the code on the display for the EVIM.Repair: Cycle the power to the EVIM. Check the display for error codes. If the EVIM again displays the code that is described in Illustration 2, replace the EVIM.Verify that the repair eliminates the original problem.STOP
Not OK - The display for the EVIM does not display an error code. Proceed to Test Step 4.Test Step 4. Check the Display on the EVIM for Status Indicators
Turn the keyswitch to the ON position.
Verify that each individual engine ECM is powered.
Check the status indicators that are on the display for the EVIM. The status indicators should turn on with the keyswitch. Expected Result:The EVIM powers up. In addition, the LED indicators that are on the display illuminate.Results:
OK - The EVIM is powered up by the keyswitch. The EVIM appears to be working properly. Proceed to Test Step 5.
Not OK - The LED indicators that are on the display do not illuminate. The EVIM does not appear to be powered. Proceed to Test Step 9.Test Step 5. Check the Message on the DisplayCheck the message that is displayed on the EVIM.Expected Result:The display shows the "EnG" message that is shown in Illustration 1.Results:
OK - Proceed to Test Step 6.
Not OK - Repair: Replace the EVIM. Verify that the repair eliminates