881872A 1 BODY, Oil Pressure Relief Mercury
1A30302ZB, 1A40302FD, 1A40302HZ, 1A40303KZ, 1A40311FZ, 1A40311HZ, 1A40403HZ, 1A40412HZ, 1A41412ZB, 1A41452EZ, 1A41452FU, 1A51411HZ, 1A51412HZ, 1A51452EZ, 1A60351EZ, 1A60412HZ, 1A60452EZ, 1A60452HZ, 1A60463EZ, 1A6C411KZ, 1A6C413KZ, 1B25203ZB, 1E41412H
BODY
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Compatible models:
1A30302ZB
1A40302FD
1A40302HZ
1A40303KZ
1A40311FZ
1A40311HZ
1A40403HZ
1A40412HZ
1A41412ZB
1A41452EZ
1A41452FU
1A51411HZ
1A51412HZ
1A51452EZ
1A60351EZ
1A60412HZ
1A60452EZ
1A60452HZ
1A60463EZ
1A6C411KZ
1A6C413KZ
1B25203ZB
1E41412HB
1E41452HB
1E51412HB
1E51412HZ
1E60403HZ
1E60412HZ
1E60413KZ
1E60452HB
1F30203ZB
1F40203FD
1F40203HZ
1F40213FZ
1F40452YB
1F41452YD
1F51452YB
Mercury
Mercury entire parts catalog list:
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Information:
The IVS may be installed. The IVS is required for mobile applications. The IVS is part of the throttle position sensor. The IVS is CLOSED when the low idle is set.The configuration parameters for the throttle and for the IVS thresholds are programmed into the ECM. Use the electronic service tool to display the configuration parameters for the throttle and for the IVS.If the IVS operates outside of the programmed range, then the engine speed may not respond to changes in the throttle position.The electronic service tool may be used for the following:
If necessary, reset the IVS threshold for an existing IVS.
If necessary, view the IVS change point and reset the IVS thresholds when a new throttle assembly is installed.
Illustration 1 g06014416
Schematic of the IVS circuits
Illustration 2 g06036184
P1 pinouts for the IVS circuits
(37) Idle validation 2
(40) Idle validation 1
Table 2
IVS Diagnostic Code Conditions
Engine Speed Switch Condition Diagnostic Code
Low idle Closed None (normal condition)
Low idle Open 558-3 (IVS 1)
2970-3 or 2971–3 (IVS 2)
Greater than low idle Closed 558-4 (IVS 1)
2970-4 or 2971–4 (IVS 2)
Greater than low idle Open None (normal condition) Complete the procedure in the order in which the steps are listed.
Table 3
Troubleshooting Test Steps Values Results
1. Check the Parameters for the Idle Validation Switches
A. Use the electronic service tool to check the parameters for the IVS and low idle settings. Refer to Troubleshooting, "Customer Specified Parameters".
IVS parameters
Result: The parameters are set correctly.
Proceed to Test Step 2
Result: The parameters are not set correctly.
Repair: Use the electronic service tool to set the parameters for the IVS and low idle.
Start the engine and operate the throttle over the full operating range. Use the electronic service tool to verify that the fault has been eliminated.
2. Inspect Electrical Connectors and the Harness
A. Inspect the P1/J1 connectors, the harness and all the connectors for the IVS. Refer to Troubleshooting, "Electrical Connectors - Inspect" for details.
B. Perform a 45 N (10 lb) pull test on each wire in the ECM connector that is associated with the suspect idle validation switch.
C. Check the screw for the ECM connector for the correct torque of 6 N m (53 lb in).
D. Check the harness for abrasion and pinch points from the throttle switch to the ECM.
Loose connection or damaged wire
Result: Faults found in harness or connectors.
Repair: Repair the connectors or the harness and/or replace the connectors or the harness. Ensure that all the seals are correctly in place and ensure that the connectors are correctly connected.
Use the electronic service tool to clear all logged diagnostic codes and then verify that the repair eliminates the fault.
Result: No harness or connector faults found.
Proceed to Test Step 3.
3. Check for Active Diagnostic Codes and/or Recently Logged Diagnostic Codes
A. Connect the electronic service tool to the diagnostic connector.
B. Turn the keyswitch to the ON position.
C. Monitor the active diagnostic code screen on the electronic service tool. Check and record any active diagnostic codes.
Note: Wait at least 30 seconds in order for the diagnostic codes to become active.
Note: A diagnostic code that is logged several times is an indication of an intermittent problem. Most intermittent problems are a poor connection in a connector.
Diagnostic codes
Result: A 558-3, 2970-3, or 2971–3 diagnostic code is active or recently logged
Proceed to Test Step 4.
Result: A 558-4, 2970-4, or 2971–4 diagnostic code is active or recently logged
Proceed to Test Step 6.
Result: No diagnostic codes are active or recently logged. The fault may be intermittent.
Repair: Inspect the connectors and wiring. Refer to Troubleshooting, "Electrical Connectors - Inspect".
4. Create a Short at the Switch Connector
A. Turn the keyswitch to the OFF position.
B. Disconnect the connector for the suspect IVS.
C. Fabricate a jumper wire that is 150 mm (6 inch) long.
D. Install the jumper wire between the two terminals on the harness connector for the suspect switch.
E. Connect the electronic service tool to the diagnostic connector.
F. Turn the keyswitch to the ON position. Do not start the engine.
G. Select the "Throttle status" function on the electronic service tool. Select "Status" function and then select "Throttles" function.
H. Observe the status of the IVS with the jumper installed.
I. Turn the keyswitch to the OFF position. Remove the jumper wire.
Short circuit
Result: The service tool indicates "In Low Idle" with the jumper installed. The fault is in the IVS.
Repair: Replace the suspect IVS.
Start the engine and operate the throttle over the full operating range.
If necessary, reset the IVS threshold for an existing IVS.
If necessary, view the IVS change point and reset the IVS thresholds when a new throttle assembly is installed.
Illustration 1 g06014416
Schematic of the IVS circuits
Illustration 2 g06036184
P1 pinouts for the IVS circuits
(37) Idle validation 2
(40) Idle validation 1
Table 2
IVS Diagnostic Code Conditions
Engine Speed Switch Condition Diagnostic Code
Low idle Closed None (normal condition)
Low idle Open 558-3 (IVS 1)
2970-3 or 2971–3 (IVS 2)
Greater than low idle Closed 558-4 (IVS 1)
2970-4 or 2971–4 (IVS 2)
Greater than low idle Open None (normal condition) Complete the procedure in the order in which the steps are listed.
Table 3
Troubleshooting Test Steps Values Results
1. Check the Parameters for the Idle Validation Switches
A. Use the electronic service tool to check the parameters for the IVS and low idle settings. Refer to Troubleshooting, "Customer Specified Parameters".
IVS parameters
Result: The parameters are set correctly.
Proceed to Test Step 2
Result: The parameters are not set correctly.
Repair: Use the electronic service tool to set the parameters for the IVS and low idle.
Start the engine and operate the throttle over the full operating range. Use the electronic service tool to verify that the fault has been eliminated.
2. Inspect Electrical Connectors and the Harness
A. Inspect the P1/J1 connectors, the harness and all the connectors for the IVS. Refer to Troubleshooting, "Electrical Connectors - Inspect" for details.
B. Perform a 45 N (10 lb) pull test on each wire in the ECM connector that is associated with the suspect idle validation switch.
C. Check the screw for the ECM connector for the correct torque of 6 N m (53 lb in).
D. Check the harness for abrasion and pinch points from the throttle switch to the ECM.
Loose connection or damaged wire
Result: Faults found in harness or connectors.
Repair: Repair the connectors or the harness and/or replace the connectors or the harness. Ensure that all the seals are correctly in place and ensure that the connectors are correctly connected.
Use the electronic service tool to clear all logged diagnostic codes and then verify that the repair eliminates the fault.
Result: No harness or connector faults found.
Proceed to Test Step 3.
3. Check for Active Diagnostic Codes and/or Recently Logged Diagnostic Codes
A. Connect the electronic service tool to the diagnostic connector.
B. Turn the keyswitch to the ON position.
C. Monitor the active diagnostic code screen on the electronic service tool. Check and record any active diagnostic codes.
Note: Wait at least 30 seconds in order for the diagnostic codes to become active.
Note: A diagnostic code that is logged several times is an indication of an intermittent problem. Most intermittent problems are a poor connection in a connector.
Diagnostic codes
Result: A 558-3, 2970-3, or 2971–3 diagnostic code is active or recently logged
Proceed to Test Step 4.
Result: A 558-4, 2970-4, or 2971–4 diagnostic code is active or recently logged
Proceed to Test Step 6.
Result: No diagnostic codes are active or recently logged. The fault may be intermittent.
Repair: Inspect the connectors and wiring. Refer to Troubleshooting, "Electrical Connectors - Inspect".
4. Create a Short at the Switch Connector
A. Turn the keyswitch to the OFF position.
B. Disconnect the connector for the suspect IVS.
C. Fabricate a jumper wire that is 150 mm (6 inch) long.
D. Install the jumper wire between the two terminals on the harness connector for the suspect switch.
E. Connect the electronic service tool to the diagnostic connector.
F. Turn the keyswitch to the ON position. Do not start the engine.
G. Select the "Throttle status" function on the electronic service tool. Select "Status" function and then select "Throttles" function.
H. Observe the status of the IVS with the jumper installed.
I. Turn the keyswitch to the OFF position. Remove the jumper wire.
Short circuit
Result: The service tool indicates "In Low Idle" with the jumper installed. The fault is in the IVS.
Repair: Replace the suspect IVS.
Start the engine and operate the throttle over the full operating range.
Parts body Mercury:
825295
809567
809567 1
825295A 1
825295A 1 BODY ASSEMBLY, Oil Pressure Relief
1B25203ZB, 1F25203VD, 1F30203VD, 1F30203ZB, 1F40452YB, 1F41452YD, 1F51452YB
883204T 1
892267A54
892267A54 BODY ASSEMBLY
1A30302ZB, 1A40302FD, 1A40302HZ, 1A40303KZ, 1A40311FZ, 1A40311HZ, 1A40403HZ, 1A40412HZ, 1A41412ZB, 1A41452EZ, 1A41452FU, 1A51411HZ, 1A51412HZ, 1A51452EZ, 1A60351EZ, 1A60412HZ, 1A60452EZ, 1A60452HZ, 1A60463EZ, 1A6C411KZ, 1A6C413KZ, 1E41412HB, 1E41452H