21113456 Volvo.Penta Charge air pipe

Table 1
Diagnostic Codes Table    
Description    Conditions which Generate this Code    System Response    
267-2 Remote Shutdown Input erratic, intermittent, or incorrect     Both of the switch contacts of the ground level shutdown switch are in the same state.     If both of the switch contacts from the ground level shutdown switch change to the same state and the engine is running, the engine will continue to run. The code is logged.    The shutdown switch provides the ability to shut down the engine. The engine's ECM remains active. Caterpillar Electronic Technician (ET) can be used to communicate with the ECM. The shutdown switch must be returned to the RUN position and the engine rpm must be zero before the ECM will allow the engine to start.Two inputs to the ECM are required for the shutdown switch to operate correctly. The normally closed input must return to the ECM and the normally open input must be floating in order for the engine to run. If the shutdown switch is toggled, the normally closed input is floating and the normally open input is grounded. The engine will shut down. Refer to Table 2 for the different input configurations of the shutdown switch.
Table 2
Input State    
Normally Closed Input    Normally Open Input    Switch Status    
Closed     Closed     Invalid    
Closed     Open     Shutdown OFF    
Open     Closed     Shutdown ON    
Open     Open     Invalid    To shut down the engine, toggle the shutdown switch to the SHUTDOWN position. If the engine is running, the ECM disables the fuel injection. The status screen will display "INJECTION DISABLED".The ECM will not allow the engine to start if the status for the shutdown switch is "ON".
Illustration 1 g01693035
SchematicTest Step 1. Inspect the Electrical Connectors and the Wiring
Turn the keyswitch to the OFF position.
Illustration 2 g01415758
Location of ECM connectors
Thoroughly inspect the ECM connector J1/P1. Thoroughly inspect the connectors for the shutdown switch. Refer to Troubleshooting, "Electrical Connectors - Inspect" for details.
Illustration 3 g01693837
P1 ECM connector (P1-46) User defined shutdown (NO) (P1-47) User defined shutdown (NC) (P1-5) Digital Return
Perform a 45 N (10 lb) pull test on each of the wires in the ECM connector that are associated with the circuit.
Check the ECM connector (allen head screw) for the proper torque. Refer to Troubleshooting, "Electrical Connectors - Inspect" for details.
Check the harness and the wiring for abrasion and for pinch points.Expected Result:All connectors, pins, and sockets are completely coupled and/or inserted. The harness and wiring are free of corrosion, of abrasion, and of pinch points.Results:
OK - The harness and wiring are OK. Proceed to Test Step 2.
Not OK - There is a problem in the connectors and/or wiring.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 Status of the Shutdown Switch on Cat ET
Connect Cat ET to the service tool connector. Start Cat ET.
Turn the keyswitch to the ON position.
Observe the status of the shutdown switch on Cat ET.
Operate the shutdown switch. Observe the status of the shutdown switch on Cat ET.Expected Result:The status of the shutdown switch on Cat ET is ON when the shutdown switch is in the SHUTDOWN position.Results:
OK - The status of the shutdown switch on Cat ET is correct.Repair: The shutdown switch is operating normally. There may be an intermittent problem. If the problem is intermittent, refer to Troubleshooting, "Electrical Connectors - Inspect".STOP
Not OK - The status of the shutdown switch on Cat ET is incorrect. The shutdown switch is not operating normally. Proceed to Test Step 3.Test Step 3. Create a Short at the Connector for the Shutdown Switch
Turn the keyswitch to the OFF position.
Disconnect the connector for the shutdown switch.
Create a short circuit at the connector for the shutdown switch between terminal A and terminal C.
Turn the keyswitch to the ON position.
Observe the status of the shutdown switch on Cat ET.
Create a short circuit at the connector for the shutdown switch between terminal B and terminal C.
Observe the status of the shutdown switch on Cat ET.
Turn the keyswitch to the OFF position.
Remove the wire short.Expected Result:The status of the shutdown switch on Cat ET is ON when a short circuit is created at the connector for the shutdown switch between terminal A and terminal C.The status of the shutdown switch on Cat ET is OFF when a short circuit is created at the connector for the shutdown switch between terminal B and terminal C.Results:
OK - The status of the shutdown switch on Cat ET is correct.Repair: The problem is not with the harness or the ECM. Temporarily connect a new shutdown switch. Verify that the new shutdown switch solves the problem before you permanently install the new shutdown switch.STOP
Not OK - The status of the shutdown switch on Cat ET is incorrect. There is a problem in the harness and/or the ECM. Proceed to Test Step 4.Test Step 4. Create a Short at the ECM
Fabricate jumper wires that can be used to replace the wires in the ECM connector for the shutdown switch. Crimp a connector socket to one end of the jumper wire.
Disconnect the ECM connector J1/P1.
Remove the wires from P1-46 and P1-47.
Install the jumper wires into the terminal locations for the shutdown switch at the ECM connector.
Create a short circuit at the P1 ECM connector between the jumper wire in P1-46 and P1-5.
Turn the keyswitch to the ON position.
Observe the status of the shutdown switch on Cat ET.
Remove the short circuit.
Create a short circuit at the P1 ECM connector between the jumper wire in P1-47 and P1-5.
Observe the status of the shutdown switch on Cat ET.
Remove the short circuit.
Turn the keyswitch to the OFF position.
Return all wires to the original configuration.