20549891 Volvo.Penta Snap ring

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
Engine intake throttle valve
Turbocharger wastegateRecommended Actions
Note: The procedures have been listed in order of probability. Complete the procedures in order.
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. Engine Intake Throttle Valve
A. Use the electronic service tool to perform the "Air System Motor Valve Verification Test" to check that the engine intake throttle valve is operating correctly.
Diagnostic codes
Result: Diagnostic codes became active during the "Air System Motor Valve Verification Test".
Repair: Troubleshoot the diagnostic codes. Refer to Troubleshooting, Diagnostic Trouble Codes.
Result: The "Air System Motor Valve Verification Test" passed. No diagnostic codes became active during the test.
Proceed to Test Step 4.
4. Turbocharger Wastegate
A. Check the operation of the wastegate on the turbocharger.
B. Check the operation of the wastegate actuator on the turbocharger. Refer to Systems Operation, Testing, and Adjusting, "Turbocharger - Inspect" .
Turbocharger wastegate
Result: Operation of the turbocharger wastegate is suspect.
Repair: Remove the circlip.
Remove the wastegate arm.
Note: Ensure that the wastegate arm is not lifted more than 5 degrees from the horizontal.
Release the wastegate and rotate back and forwards until the wastegate becomes free and loose.
If the wastegate does not become free and loose, replace the turbocharger. Refer to Disassembly and Assembly, "Turbocharger - Remove" and Disassembly and Assembly, "Turbocharger - Install".
Result: Operation of the turbocharger wastegate is OK.
Proceed to Test Step 5.
5. Inspect Electrical Connections
A. Inspect the electrical connections between the sensor and ECM for loose wires, breaks, or dirt ingress.
Electrical Connections
Result: A connection point has damaged wires or pins.
Repair: Repair the damaged wires or pins.
Result: A wire is loose.
Repair: Resecure wire into correct port.
Result: A connection point has excessive dirt/dust.
Repair: Thoroughly clean the connection point and wire ports in the back of the connector with an air gun or similar. Ensure they are free of dirt and/or dust.
Result: Electrical connections have no loose wires, breaks, or dirt ingress.
Contact the Dealer Solutions Network (DSN).