21883893 Volvo.Penta Wiring harness

Table 1
Diagnostic Codes Table
Code Conditions which Generate this Code System Response
1040-9 ICSM #1 : Abnormal Update Rate The Electronic Control Module (ECM) and the ICSM have been powered for at least five seconds and the ICSM is not communicating on the data link. The shutdown output is activated. The code is logged.
The engine is shut down.
Table 2
Diagnostic Codes Table
Code Conditions which Generate this Code System Response
1040-9 ICSM #1 : Abnormal Update Rate The ECM and the ICSM(s) have been powered for at least five seconds and the left side ICSM did not receive ten consecutive messages from the right side ICSM. The shutdown output is activated. The code is logged.
The engine is shut down.
1041-9 ICSM #2 : Abnormal Update Rate The ECM and the ICSM(s) have been powered for at least five seconds and the right side ICSM did not receive ten consecutive messages from the left side ICSM. An ICSM monitors the combustion sensors and the thermocouples on the engine. The in-line engines have one ICSM and the vee engines have two ICSM(s). The vee engines have one ICSM for each bank of cylinders. Each ICSM performs calculations in order to optimize the engine's operation. Each ICSM broadcasts the following information:
Fuel correction factor
Actual combustion burn time for each cylinder
Average combustion burn time for each bank of cylinders
Actual exhaust port temperature of each cylinder
Average exhaust port temperature for each bank of cylinders
The temperature of the exhaust at the inlet and at the outlet of each turbochargerInformation from an ICSM travels across the Cat Data Link. The ICSM must be programmed in order to communicate across the Cat Data Link. The Cat Data Link must be in good condition so that the ICSM can transmit the information. An ICSM may be able to communicate with Caterpillar Electronic Technician (ET) even though communication with the ECM is not possible.The diagnostic code is probably caused by a problem with an electrical connector. The next likely cause is a problem with the wiring. The least likely cause is a problem with the ICSM.Logged diagnostic codes provide a historical record. Before you begin this procedure, use Cat ET to print the logged codes to a file.This troubleshooting procedure may generate additional diagnostic codes. Keep your mind on correcting the cause of the original diagnostic code. Clear the diagnostic codes after the problem is resolved.
Illustration 1 g01443510
Schematic of the Cat Data Link for the ICSM(s) on the in-line engines and on the vee engines
Test Step 1. Inspect the Electrical Connectors and Wiring
Illustration 2 g01431198
Terminal Box
(1) ECM connector J2/P2
(2) ECM connector J1/P1
(3) 16 amp circuit breaker
(4) Connectors J3/P3 for the customer's connector
(5) Connectors J4/P4 for the optional control panel (if equipped) or for a customer's connector
(6) J5/P5 connectors for the harness
(7) J6/P6 connectors for the harness
Turn the engine control switch to the OFF position. Switch the 16 amp circuit breaker for the ECM OFF. Note: For the following steps, refer to Troubleshooting, "Electrical Connectors - Inspect".Note: Illustration 3 shows one side of the engine. The other side is similar.
Illustration 3 g01440765
Typical view of an engine mounted ICSM
(8) ICSM
(9) Engine harness connectors for the ICSM
Thoroughly inspect each of the following connectors:
ECM J1/P1 connectors
Service tool connector
Terminal box J5/P5 and J6/P6 connectors for the engine harnesses
Connector for the left side ICSM
Connector for the right side ICSM
Check the allen head screw on each of the ECM connectors for the proper torque. Refer to Troubleshooting, "Electrical Connectors - Inspect" for the correct torque values.
Perform a 45 N (10 lb) pull test on each of the wires that are associated with the Cat Data Link for the ICSM.
Check the harness and wiring for abrasion and pinch points from each ICSM to the terminal box. Expected Result:All connectors, pins, and sockets are connected properly. The connectors and the wiring do not have corrosion, abrasion, or pinch points.Results:
OK - All connectors, pins, and sockets are connected properly. The connectors and the wiring do not have corrosion, abrasion, or pinch points. The components are in good condition with proper connections. Proceed to Test Step 2.
Not OK - At least one of the connectors, pins, or sockets is not connected properly. At least one connector or wire has corrosion, abrasion, and/or pinch points. The components are not in good condition and/or at least one connection is improper.Repair: Perform the necessary repairs and/or replace parts, if necessary.STOPTest Step 2. Verify that the Diagnostic Code is Active
Switch the 16 amp circuit breaker for the ECM ON. Turn the engine control switch to the STOP position.
The ECM must operate for at least five seconds in order for these codes to become activated. Use Cat ET to look for the codes that are listed in Table 1 if you are working on an in-line engine. If you are working on a vee engine, look for the codes that are listed in Table 2. Expected Result:There are no active codes.Results:
No codes - The problem seems to be resolved. There are no active codes. The modules appear to be operating correctly at this time.Repair: The initial diagnostic code was probably caused by a poor electrical connection. Resume normal operation.STOP
1040-9 - The right side ICSM is not communicating with the ECM. Proceed to Test Step 3.
1041-9 - The left side ICSM is not communicating with the ECM. Proceed to Test Step 4.Test Step 3. Check the Right Side Cat Data Link for Continuity
Turn the engine control to the OFF/RESET position. Switch the 16 amp circuit breaker for the ECM OFF.
Disconnect Cat ET from the service tool connector.
Disconnect connector P1 and the connector for the right side ICSM.
Illustration 4 g01443514
ECM connector P1
(P1-8) Cat Data Link +
(P1-9) Cat Data Link −
(P1-63) -Battery
Fabricate a jumper wire that is the appropriate length with the appropriate terminals on the ends. Connect the jumper wire between terminals P1-8 and P1-9.