95870A 4 Mercruiser EXHAUST ELBOW ASSEMBLY, LOWER

Table 1
Diagnostic Trouble Code for Intake Manifold Air Pressure Is High
J1939 Code Code Description Comments
102-16 Engine Intake Manifold #1 Pressure : High - moderate severity (2) This pressure is a variable value that is calculated by the ECM. The resulting value depends on the operating conditions of the engine. Probable Causes
Turbocharger electronic wastegate regulatorRecommended Actions
Table 2
Troubleshooting Test Steps Values Results
1. Download Information Using the Electronic Service Tool
A. Use the electronic service tool to download the "Product Status Report" (PSR) with histograms before performing any troubleshooting or clearing any diagnostic codes.
Note: The downloaded information will be required by the Dealer Solutions Network (DSN) if troubleshooting assistance is required.
Downloaded information
Result: The information was successfully saved.
Proceed to Test Step 2.
Result: The electronic service tool information was not successfully saved.
Contact the Dealer Solutions Network (DSN) for guidance.
2. Create an Electronic Service Tool Snapshot
A. Select "Snapshot Viewer" on the electronic service tool, using menus: Information -> Snapshot -> Viewer
B. Select the event code and then click "View Graph".
C. Select the following parameter and then click OK.
Engine Speed
D. Select Save to "File to save" a Snapshot File (*.xml). This file will contain all the data in the snapshot and not only the data shown on the graph.
Note: The downloaded information will be required by the DSN if troubleshooting assistance is required.
Snapshot saved
Result: The electronic service tool snapshot was successfully saved.
Proceed to Test Step 3.
Result: The electronic service tool snapshot was not successfully saved.
Contact the DSN for guidance.
3. Turbocharger Electronic Wastegate Regulator
A. Use the electronic service tool to perform the "Air System Motor Valves Verification Test" to check that the turbocharger wastegate is operating correctly.
B. Inspect the turbocharger. Refer to Systems Operation, Testing and Adjusting, "Turbocharger - Inspect".
Turbocharger wastegate
Result: Diagnostic codes became active during the "Air System Motor Valves Verification Test"
Repair: Troubleshoot the diagnostic codes. Refer to Troubleshooting, Diagnostic Trouble Codes.
If the wastegate is not operating correctly, disconnect the linkage from the actuator by removing the circlips. Check the crank on the turbine housing for free movement. If the crank moves freely, replace the wastegate actuator.
If the turbocharger wastegate is replaced, use the electronic service tool to perform the "Turbocharger Wastegate Actuator Replacement Reset".
Use the electronic service tool to perform the "Air System Motor Valve Verification Test" to verify that the repair eliminates the fault.
If the crank does not move freely, replace the turbocharger assembly. Refer to Disassembly and Assembly , Turbocharger - Remove and Disassembly and Assembly , Turbocharger - Install.
If the turbocharger is replaced, use the electronic service tool to perform the "Turbocharger Wastegate Actuator Replacement Reset".
Use the electronic service tool to perform the "Air System Motor Valve Verification Test" to verify that the repair eliminates the fault.
Result: There is a suspected fault in the wastegate or the wastegate actuator.
Repair: Replace the turbocharger. Refer to Disassembly and Assembly, "Turbocharger - Remove" and Disassembly and Assembly, "Turbocharger - Install".
If the turbocharger is replaced, use the electronic service tool to perform the "Turbocharger Wastegate Actuator Replacement Reset".
Use the electronic service tool to perform the "Air System Motor Valve Verification Test"
Result: The wastegate and the wastegate actuator operate correctly.
If the fault is still present, contact the DSN and provide the following information from Test Step 1 and Test Step 2:
• PSR and Histograms
• Snapshot data